diff --git a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Form1.Designer.cs b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Form1.Designer.cs
index d3e8ff3..45ab4fd 100644
--- a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Form1.Designer.cs	
+++ b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Form1.Designer.cs	
@@ -39,9 +39,11 @@ protected override void Dispose(bool disposing)
       private void InitializeComponent()
       {
             System.Windows.Forms.DataVisualization.Charting.ChartArea chartArea1 = new System.Windows.Forms.DataVisualization.Charting.ChartArea();
+            System.Windows.Forms.DataVisualization.Charting.Legend legend1 = new System.Windows.Forms.DataVisualization.Charting.Legend();
             System.Windows.Forms.DataVisualization.Charting.Series series1 = new System.Windows.Forms.DataVisualization.Charting.Series();
             System.Windows.Forms.DataVisualization.Charting.Series series2 = new System.Windows.Forms.DataVisualization.Charting.Series();
             System.Windows.Forms.DataVisualization.Charting.ChartArea chartArea2 = new System.Windows.Forms.DataVisualization.Charting.ChartArea();
+            System.Windows.Forms.DataVisualization.Charting.Legend legend2 = new System.Windows.Forms.DataVisualization.Charting.Legend();
             System.Windows.Forms.DataVisualization.Charting.Series series3 = new System.Windows.Forms.DataVisualization.Charting.Series();
             System.Windows.Forms.DataVisualization.Charting.Series series4 = new System.Windows.Forms.DataVisualization.Charting.Series();
             this.groupBox1 = new System.Windows.Forms.GroupBox();
@@ -199,9 +201,9 @@ private void InitializeComponent()
             this.label4.Location = new System.Drawing.Point(9, 114);
             this.label4.Margin = new System.Windows.Forms.Padding(4, 0, 4, 0);
             this.label4.Name = "label4";
-            this.label4.Size = new System.Drawing.Size(157, 20);
+            this.label4.Size = new System.Drawing.Size(162, 20);
             this.label4.TabIndex = 6;
-            this.label4.Text = "Centoid Position [µm]";
+            this.label4.Text = "Centroid Position [µm]";
             // 
             // textBox_peakIntensitySlit1
             // 
@@ -258,16 +260,28 @@ private void InitializeComponent()
             chartArea1.AxisY.Title = "Intensity [digits]";
             chartArea1.Name = "ChartArea1";
             this.chart25um.ChartAreas.Add(chartArea1);
+            legend1.BorderDashStyle = System.Windows.Forms.DataVisualization.Charting.ChartDashStyle.NotSet;
+            legend1.LegendStyle = System.Windows.Forms.DataVisualization.Charting.LegendStyle.Column;
+            legend1.Name = "Legend1";
+            legend1.Position.Auto = false;
+            legend1.Position.Height = 11.79775F;
+            legend1.Position.Width = 24.06015F;
+            legend1.Position.X = 74F;
+            legend1.Position.Y = 8F;
+            this.chart25um.Legends.Add(legend1);
             this.chart25um.Location = new System.Drawing.Point(18, 178);
             this.chart25um.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
             this.chart25um.Name = "chart25um";
             series1.ChartArea = "ChartArea1";
             series1.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
+            series1.Legend = "Legend1";
             series1.LegendText = "X";
             series1.LegendToolTip = "Samples of the 25µm slit in x direction";
             series1.Name = "Series1";
             series2.ChartArea = "ChartArea1";
             series2.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
+            series2.Legend = "Legend1";
+            series2.LegendText = "Y";
             series2.Name = "Series2";
             this.chart25um.Series.Add(series1);
             this.chart25um.Series.Add(series2);
@@ -288,14 +302,27 @@ private void InitializeComponent()
             chartArea2.AxisY.Title = "Intensity [digits]";
             chartArea2.Name = "ChartArea1";
             this.chart5um.ChartAreas.Add(chartArea2);
+            legend2.BorderDashStyle = System.Windows.Forms.DataVisualization.Charting.ChartDashStyle.NotSet;
+            legend2.LegendStyle = System.Windows.Forms.DataVisualization.Charting.LegendStyle.Column;
+            legend2.Name = "Legend1";
+            legend2.Position.Auto = false;
+            legend2.Position.Height = 11.79775F;
+            legend2.Position.Width = 24.06015F;
+            legend2.Position.X = 74F;
+            legend2.Position.Y = 8F;
+            this.chart5um.Legends.Add(legend2);
             this.chart5um.Location = new System.Drawing.Point(426, 178);
             this.chart5um.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
             this.chart5um.Name = "chart5um";
             series3.ChartArea = "ChartArea1";
             series3.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
+            series3.Legend = "Legend1";
+            series3.LegendText = "X";
             series3.Name = "Series1";
             series4.ChartArea = "ChartArea1";
             series4.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
+            series4.Legend = "Legend1";
+            series4.LegendText = "Y";
             series4.Name = "Series2";
             this.chart5um.Series.Add(series3);
             this.chart5um.Series.Add(series4);
@@ -403,9 +430,9 @@ private void InitializeComponent()
             this.label9.Location = new System.Drawing.Point(9, 114);
             this.label9.Margin = new System.Windows.Forms.Padding(4, 0, 4, 0);
             this.label9.Name = "label9";
-            this.label9.Size = new System.Drawing.Size(157, 20);
+            this.label9.Size = new System.Drawing.Size(162, 20);
             this.label9.TabIndex = 6;
-            this.label9.Text = "Centoid Position [µm]";
+            this.label9.Text = "Centroid Position [µm]";
             // 
             // textBox_peakIntensitySlit2
             // 
diff --git a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Form1.cs b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Form1.cs
index 5ccb7f4..ac9d751 100644
--- a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Form1.cs	
+++ b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Form1.cs	
@@ -1,20 +1,22 @@
 // Title: BP209 2D Reconstruction C Sharp Example. 
 // Created Date: 2024 - 10 - 12
-// Last modified date: 2024 - 10 - 12
+// Last modified date: 2026 - 01 - 29
 // .NET version: 4.8
-// Thorlabs SDK Version: Beam version 9.1.5787.560
+// Thorlabs SDK Version: Beam version 9.3
 // Notes: This example is based on the C sharp example which is installed to
 // C:\Program Files (x86)\IVI Foundation\VISA\WinNT\TLBP2\Examples during software installation. 
 // This example has added the 2D reconstruction algorithm and the reconstructed beam image is displayed. 
 
 namespace Thorlabs.BP2_CSharpDemo
 {
-   using System;
+    using System;
+    using System.Data;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    using System.Runtime.InteropServices;
     using System.Text;
     using System.Windows.Forms;
-    using System.Drawing;
     using Thorlabs.TLBP2.Interop;
-    using System.Runtime.InteropServices;
 
     /// <summary>
     /// Initializes the form
@@ -36,16 +38,6 @@ public partial class Form1 : Form
       /// </summary>
       private Timer scanTimer = null;
 
-      /// <summary>
-      /// array of data structures for each slit.
-      /// </summary>
-      private bp2_slit_data[] bp2SlitData = new bp2_slit_data[4];
-
-      /// <summary>
-      /// array of calculation structures for each slit.
-      /// </summary>
-      private bp2_calculations[] bp2Calculations = new bp2_calculations[4];
-
       /// <summary>
       /// Initializes a new instance of the <see cref="Form1"/> class.
       /// </summary>
@@ -59,9 +51,6 @@ public Form1()
          // implementation with driver functions
          this.ConnectToTheFirstDevice();
 
-         // alternative implementation
-         ////this.connectToTheFirstDeviceByRM();  
-
          if (this.bp2Device != null)
          {
             // get the instrument information
@@ -89,7 +78,6 @@ public Form1()
             ushort sampleCount;
             double sampleResolution;
             this.status = this.bp2Device.clear_drum_speed_offset();
-            this.status = this.bp2Device.set_drum_speed(10.0);
             this.status = this.bp2Device.set_drum_speed_ex(10.0, out sampleCount, out sampleResolution);
 
             // activate the position correction to have the same calculation results as the Thorlabs Beam Application
@@ -101,11 +89,15 @@ public Form1()
             // activate the drum speed correction
             this.status = this.bp2Device.set_speed_correction(true);
 
-            // use the offset for 10Hz to be compatible with the release version 5.0
-            this.status = this.bp2Device.set_reference_position(0, 4, 100.0);
-            this.status = this.bp2Device.set_reference_position(1, 4, -100.0);
-            this.status = this.bp2Device.set_reference_position(2, 4, 100.0);
-            this.status = this.bp2Device.set_reference_position(3, 4, -100.0);
+            // return all position coordinates from -4500 µm to 4500 µm and flip the x scans
+            this.status = this.bp2Device.setThorlabsBeamCompatibleCoordinateSystem(true);
+            
+            // set the calculation area to auto rectangle, and set the clip level to 1%
+            // which is the same as the software default settings
+            this.status = this.bp2Device.set_calculation_area(0,true,0.01f,0,0);
+            this.status = this.bp2Device.set_calculation_area(1,true,0.01f,0,0);
+            this.status = this.bp2Device.set_calculation_area(2,true,0.01f,0,0);
+            this.status = this.bp2Device.set_calculation_area(3,true,0.01f,0,0);
 
             // poll for a valid scan
             this.scanTimer = new Timer();
@@ -152,22 +144,6 @@ private void ConnectToTheFirstDevice()
          }
       }
 
-      /// <summary>
-      /// search for connected devices and connect to the first one.
-      /// Use the VISA resource manager and simple data types.
-      /// </summary>
-      private void ConnectToTheFirstDeviceByRM()
-      {
-         // get the resource string of the first device
-         string[] bp2Resources = BP2_ResourceManager.FindRscBP2();
-
-         if (bp2Resources.Length > 0)
-         {
-            // connect to the first device
-            this.bp2Device = new TLBP2(bp2Resources[0], false, false);
-         } 
-      }
-
       /// <summary>
       /// poll for a new measurement and fill the structures with the calculation results.
       /// </summary>
@@ -177,7 +153,7 @@ private void GetMeasurement()
          double drumSpeed;
          try
          {
-            if (0 == this.bp2Device.get_drum_speed(out drumSpeed))
+            if (0 == this.bp2Device.get_averaged_drum_speed(out drumSpeed))
             {
                this.textBox_drumSpeed.Text = drumSpeed.ToString("f2");
             }
@@ -200,70 +176,86 @@ private void GetMeasurement()
             else if ((deviceStatus & 2) == 2)
                this.toolStripStatusLabel1.Text = "Instrument is ready";
          }
-
-         // the gain and drum speed will be corrected during the measurement
+         
          double power;
-         float powerWindowSaturation;
-         if ((deviceStatus & 1) == 1 &&
-             0 == this.bp2Device.get_slit_scan_data(this.bp2SlitData, this.bp2Calculations, out power, out powerWindowSaturation, null))
+         float powerSaturation;
+         ushort peakIndex1, peakIndex2,sampleCount1,sampleCount2,centroidIndexSlit1, centroidIndexSlit2;
+         float peakPositionSlit1, peakPositionSlit2, centroidPositionSlit1, centroidPositionSlit2, peakIntensitySlit1, peakIntensitySlit2;
+         float darkLevelSlit1, darkLevelSlit2;
+
+         if ((deviceStatus & 1) == 1 && 0 == this.bp2Device.request_scan_data(out power, out powerSaturation, null))
          {
-            this.textBox_peakPositionSlit1.Text      = this.bp2Calculations[0].PeakPosition.ToString("f2");
-            this.textBox_peakIntensitySlit1.Text = (this.bp2Calculations[0].PeakIntensity * 100.0f / ((float)0x7AFF - this.bp2SlitData[0].SlitDarkLevel)).ToString("f2");
-            this.textBox_centroidPositionSlit1.Text  = this.bp2Calculations[0].CentroidPos.ToString("f2");
+            // get the peak position and centriod position
+            this.bp2Device.get_slit_peak(0, out peakIndex1, out peakPositionSlit1, out peakIntensitySlit1);
+            this.bp2Device.get_slit_peak(1, out peakIndex2, out peakPositionSlit2, out peakIntensitySlit2);
+            this.bp2Device.get_scan_data_information(0, out sampleCount1, out darkLevelSlit1);
+            this.bp2Device.get_scan_data_information(1, out sampleCount2, out darkLevelSlit2);
+            this.bp2Device.get_slit_centroid(0, out centroidIndexSlit1,out centroidPositionSlit1);
+            this.bp2Device.get_slit_centroid(1, out centroidIndexSlit2, out centroidPositionSlit2);
+
+            this.textBox_peakPositionSlit1.Text = peakPositionSlit1.ToString("f2");
+            this.textBox_peakIntensitySlit1.Text = (peakIntensitySlit1 * 100.0f / ((float)0x7AFF - darkLevelSlit1)).ToString("f2");
+            this.textBox_centroidPositionSlit1.Text  = centroidPositionSlit1.ToString("f2");
 
-            this.textBox_peakPositionSlit2.Text = this.bp2Calculations[1].PeakPosition.ToString("f2");
-            this.textBox_peakIntensitySlit2.Text = (this.bp2Calculations[1].PeakIntensity * 100.0f / ((float)0x7AFF - this.bp2SlitData[1].SlitDarkLevel)).ToString("f2");
-            this.textBox_centroidPositionSlit2.Text = this.bp2Calculations[1].CentroidPos.ToString("f2");
+            this.textBox_peakPositionSlit2.Text = peakPositionSlit2.ToString("f2");
+            this.textBox_peakIntensitySlit2.Text = (peakIntensitySlit2 * 100.0f / ((float)0x7AFF - darkLevelSlit2)).ToString("f2");
+            this.textBox_centroidPositionSlit2.Text = centroidPositionSlit2.ToString("f2");
 
-            this.textBox_powerSaturation.Text   = (powerWindowSaturation*100.0).ToString("f2");
+            this.textBox_powerSaturation.Text   = (powerSaturation*100.0).ToString("f2");
 
-            this.chart25um.Series[0].Points.DataBindXY(bp2SlitData[0].SlitSamplesPositions, bp2SlitData[0].SlitSamplesIntensities);
-            this.chart25um.Series[1].Points.DataBindXY(bp2SlitData[1].SlitSamplesPositions, bp2SlitData[1].SlitSamplesIntensities);
-            this.chart5um.Series[0].Points.DataBindXY(bp2SlitData[2].SlitSamplesPositions, bp2SlitData[2].SlitSamplesIntensities);
-            this.chart5um.Series[1].Points.DataBindXY(bp2SlitData[3].SlitSamplesPositions, bp2SlitData[3].SlitSamplesIntensities);
+            GetChartAnd2DReconstruction();
 
-            //Calculate and display the 2D reconstruction image
-            Get2DReconstruction();
          }
       }
 
         /// <summary>
         /// Calculate the 2D reconstructed beam intensity distribution and display the image on the WinForm
         /// </summary>
-        private void Get2DReconstruction()
+        private void GetChartAnd2DReconstruction()
       {
-            double[] sampleIntensitiesX = new double[7500];
-            double[] sampleIntensitiesY = new double[7500];
-            double[] samplePositionX = new double[7500];
-            double[] samplePositionY = new double[7500];
-            double[] gaussianFitIntensitiesX = new double[7500];
-            double[] gaussianFitIntensitiesY = new double[7500];
-            double power;
-            float powerSaturation;
+            double[] sampleIntensities25umX = new double[7500];
+            double[] sampleIntensities25umY = new double[7500];
+            double[] samplePosition25umX = new double[7500];
+            double[] samplePosition25umY = new double[7500];
+            double[] sampleIntensities5umX = new double[7500];
+            double[] sampleIntensities5umY = new double[7500];
+            double[] samplePosition5umX = new double[7500];
+            double[] samplePosition5umY = new double[7500];
+            double[] gaussianFitIntensities25umX = new double[7500];
+            double[] gaussianFitIntensities25umY = new double[7500];
             float temp;
-
-            //Request the scan data
-            this.bp2Device.request_scan_data(out power,out powerSaturation,null);
+            
             //Get the intensities from the 25um X slit and the 25um Y slit
-            this.bp2Device.get_sample_intensities(0, sampleIntensitiesX, samplePositionX);
-            this.bp2Device.get_sample_intensities(1, sampleIntensitiesY, samplePositionY);
+            this.bp2Device.get_sample_intensities(0, sampleIntensities25umX, samplePosition25umX);
+            this.bp2Device.get_sample_intensities(1, sampleIntensities25umY, samplePosition25umY);
+
+            //Get the intensities from the 5um X slit and the 5um Y slit
+            this.bp2Device.get_sample_intensities(2, sampleIntensities5umX, samplePosition5umX);
+            this.bp2Device.get_sample_intensities(3, sampleIntensities5umY, samplePosition5umY);
+
+            //Chart display
+            this.chart25um.Series[0].Points.DataBindXY(samplePosition25umX, sampleIntensities25umX);
+            this.chart25um.Series[1].Points.DataBindXY(samplePosition25umY, sampleIntensities25umY);
+            this.chart5um.Series[0].Points.DataBindXY(samplePosition5umX, sampleIntensities5umX);
+            this.chart5um.Series[1].Points.DataBindXY(samplePosition5umY, sampleIntensities5umY);
 
             //Get the gaussian fit intensites from the 25um X slit and the 25um Y slit
-            this.bp2Device.get_slit_gaussian_fit(0, out temp,out temp,out temp,gaussianFitIntensitiesX);
-            this.bp2Device.get_slit_gaussian_fit(1, out temp, out temp, out temp, gaussianFitIntensitiesY);
+            this.bp2Device.get_slit_gaussian_fit(0, out temp,out temp,out temp, gaussianFitIntensities25umX);
+            this.bp2Device.get_slit_gaussian_fit(1, out temp, out temp, out temp, gaussianFitIntensities25umY);
 
             //2D reconstruction 
-            double[,] imageData = new double[750, 750];
+            int imageSize = 750;
+            double[,] imageData = new double[imageSize, imageSize];
             double imageDataMax = 0;
             int ixz, iyz;
-            for (int ix = 0; ix < 750; ix++)
+            for (int ix = 0; ix < imageSize; ix++)
             {
-                for (int iy = 0; iy < 750; iy++)
+                for (int iy = 0; iy < imageSize; iy++)
                 {
                     //2D reconstruction algorithm
-                    ixz = (750 - ix - 1) * 10;
-                    iyz = (750 - iy - 1) * 10;
-                    imageData[ix, iy] = sampleIntensitiesX[ixz] * gaussianFitIntensitiesX[ixz] * sampleIntensitiesY[iyz] * gaussianFitIntensitiesY[iyz];
+                    ixz = (imageSize - ix - 1) * 7500 / imageSize;
+                    iyz = (imageSize - iy - 1) * 7500 / imageSize;
+                    imageData[ix, iy] = sampleIntensities25umX[ixz] * gaussianFitIntensities25umX[ixz] * sampleIntensities25umY[iyz] * gaussianFitIntensities25umY[iyz];
 
                     //set the negative values to zero
                     if (imageData[ix, iy] < 0)
@@ -279,22 +271,29 @@ private void Get2DReconstruction()
             }
 
             //Normalize intensity values and generate the Bitmap image
-            int imageGrayValue;
-            Bitmap bitmap = new Bitmap(750, 750);
-            for (int x = 0; x < 750; x++)
+            Bitmap bitmap = new Bitmap(imageSize, imageSize, PixelFormat.Format24bppRgb);
+            BitmapData bmpData = bitmap.LockBits(
+                new Rectangle(0, 0, imageSize, imageSize),ImageLockMode.WriteOnly,bitmap.PixelFormat);
+
+            int stride = bmpData.Stride;
+            byte[] pixelData = new byte[stride * imageSize];
+
+            for (int y = 0; y < imageSize; y++)
             {
-                for (int y = 0; y < 750; y++)
+                for (int x = 0; x < imageSize; x++)
                 {
-                    imageGrayValue = (int)(imageData[x, y] * 255 / imageDataMax);
-                    Color color = Color.FromArgb(imageGrayValue, imageGrayValue, imageGrayValue);
-                    bitmap.SetPixel(x, y, color);
+                    int gray = (int)(imageData[x, y] * 255 / imageDataMax);
+                    gray = Math.Min(255, Math.Max(0, gray));
+                    int pixelIndex = y * stride + x * 3;
+                    pixelData[pixelIndex + 0] = (byte)gray;
+                    pixelData[pixelIndex + 1] = (byte)gray;
+                    pixelData[pixelIndex + 2] = (byte)gray;
                 }
             }
 
-            // set the bitmap to the Image property
+            Marshal.Copy(pixelData, 0, bmpData.Scan0, pixelData.Length);
+            bitmap.UnlockBits(bmpData);
             this.reconstructionPicture.Image = bitmap;
-
-
         }
         /// <summary>
         /// If a new scan is available, get the data from the instrument and display the calculation results on the form.
@@ -329,5 +328,5 @@ private void Form1_FormClosing(object sender, FormClosingEventArgs e)
             this.bp2Device.Dispose();
          }
       }
-   }
+    }
 }
diff --git a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Program.cs b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Program.cs
index b53b3ec..18bd693 100644
--- a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Program.cs	
+++ b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/Program.cs	
@@ -1,8 +1,8 @@
 // Title: BP209 2D Reconstruction C Sharp Example. 
 // Created Date: 2024 - 10 - 12
-// Last modified date: 2024 - 10 - 12
+// Last modified date: 2026 - 01 - 29
 // .NET version: 4.8
-// Thorlabs SDK Version: Beam version 9.1.5787.560
+// Thorlabs SDK Version: Beam version 9.3
 // Notes: This example is based on the C sharp example which is installed to
 // C:\Program Files (x86)\IVI Foundation\VISA\WinNT\TLBP2\Examples during software installation. 
 // This example has added the 2D reconstruction algorithm and the reconstructed beam image is displayed. 
diff --git a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/bin/Debug/Thorlabs.TLBP2_64.Interop.xml b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/bin/Debug/Thorlabs.TLBP2_64.Interop.xml
index 7da0c28..ce214e2 100644
--- a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/bin/Debug/Thorlabs.TLBP2_64.Interop.xml	
+++ b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/bin/Debug/Thorlabs.TLBP2_64.Interop.xml	
@@ -104,6 +104,41 @@
             VISA resource string which identifies an instrument.
             </summary>
         </member>
+        <member name="T:Thorlabs.TLBP2.Interop.bp2_ellipse_parameter">
+            <summary>
+            structure to handle the slit data of a measurement
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.bp2_ellipse_parameter.diameterMin">
+            <summary>
+            minimum ellipse diameter in µm
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.bp2_ellipse_parameter.diameterMax">
+            <summary>
+            maximum ellipse diameter in µm
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.bp2_ellipse_parameter.diameterMean">
+            <summary>
+            mean ellipse diameter in µm
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.bp2_ellipse_parameter.ellipticity">
+            <summary>
+            ellipticity in percent
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.bp2_ellipse_parameter.eccentricity">
+            <summary>
+            eccentricity in percent
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.bp2_ellipse_parameter.orientation">
+            <summary>
+            ellipse orientation (either 0 degree or 90 degree)
+            </summary>
+        </member>
         <member name="T:Thorlabs.TLBP2.Interop.TLBP2">
             <summary>
             Class TLBP2
@@ -209,39 +244,108 @@
             The value is the IntPtr that represents the handle to the instrument.
             </value>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_connected_devices(Thorlabs.TLBP2.Interop.bp2_device[],System.UInt32@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.findRsrc(System.UInt32@)">
             <summary>
-            Gets a list of connected devices.
-            If this function is called with the parameter "Device_List" as VI_NULL, the function just returns the Device_Count.
-            The Device_List has to be initialized with Device_Count elements.
+            This function finds all driver compatible devices attached to the PC and returns the number of found devices.
             
-            ViUInt32 deviceCount;
-            ViStatus err = TLBP2_get_connected_deviced(vi, VI_NULL, &amp;deviceCount);
+            Note:
+            (1) The function additionally stores information like system name about the found resources internally. This information can be retrieved with further functions from the class, e.g. &lt;Get Resource Description&gt; and &lt;Get Resource Information&gt;.
             
-            BP2_DEVICE* deviceList = (BP2_DEVICE*) malloc(sizeof(BP2_DEVICE)*deviceCount);
-            err = TLBP2_get_connected_deviced(vi, deviceList, &amp;deviceCount);
+            (2) To list Ethernet and Bluetooth devices, enable the search for these devices with functions setEnableNetSearch and setEnableBthSearch.
             
-            ...
+            </summary>
+            <param name="Resource_Count">
+            The number of connected devices that are supported by this driver.
             
-            free(deviceList);
+            </param>
+            <returns>
+            This is the error code returned by the function call. For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.getRsrcName(System.UInt32,System.Text.StringBuilder)">
+            <summary>
+            This function gets the resource name string needed to open a device with &lt;Initialize&gt;.
+            
+            Notes:
+            (1) The data provided by this function was updated at the last call of &lt;Find Resources&gt;.
             </summary>
-            <param name="Device_List">
-            The initialized list of BP2_DEVICE is filled with the information of the connected devices. If the parameter is VI_NULL, the parameter will be ignored. The list has to be initialized with the number of elements that is given by the Device_Count parameter. Maximal BP2_MAX_DEVICE_COUNT (10) devices can be connected.
+            <param name="Index">
+            This parameter accepts the index of the device to get the resource descriptor from.
+            
+            Notes: 
+            (1) The index is zero based. The maximum index to be used here is one less than the number of devices found by the last call of &lt;Find Resources&gt;.
+            
             </param>
-            <param name="Device_Count">
-            Returns the number of connected devices.
+            <param name="Resource_Name">
+            This parameter returns the resource descriptor. Use this descriptor to specify the device in &lt;Initialize&gt;.
+            
+            Notes:
+            (1) The array must contain at least TLPM_BUFFER_SIZE (256) elements ViChar[256].
             </param>
             <returns>
-            Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
+            This is the error code returned by the function call. For error codes and descriptions see &lt;Error Message&gt;.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS            Connected devices query successful
+            VI_SUCCESS               Successful
+            VI_ERROR_INV_OBJECT      Index specifies an invalid object
             
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.getRsrcInfo(System.UInt32,System.Text.StringBuilder,System.Text.StringBuilder,System.Text.StringBuilder,System.Boolean@)">
+            <summary>
+            This function gets information about a connected resource.
             
-            Vendor Specific Codes
+            Notes:
+            (1) The data provided by this function was updated at the last call of &lt;Find Resources&gt;.
+            </summary>
+            <param name="Index">
+            This parameter accepts the index of the device to get the resource descriptor from.
+            
+            Notes: 
+            (1) The index is zero based. The maximum index to be used here is one less than the number of devices found by the last call of &lt;Find Resources&gt;.
+            
+            </param>
+            <param name="Model_Name">
+            This parameter returns the model name of the device.
+            
+            Notes:
+            (1) The array must contain at least TLPM_BUFFER_SIZE (256) elements ViChar[256].
+            (2) You may pass VI_NULL if you do not need this parameter.
+            (3) Serial interfaces over Bluetooth will return the interface name instead of the device model name.
+            </param>
+            <param name="Serial_Number">
+            This parameter returns the serial number of the device.
+            
+            Notes:
+            (1) The array must contain at least TLPM_BUFFER_SIZE (256) elements ViChar[256].
+            (2) You may pass VI_NULL if you do not need this parameter.
+            (3) The serial number is not available for serial interfaces over Bluetooth.
+            </param>
+            <param name="Manufacturer">
+            This parameter returns the manufacturer name of the device.
+            
+            Notes:
+            (1) The array must contain at least TLPM_BUFFER_SIZE (256) elements ViChar[256].
+            (2) You may pass VI_NULL if you do not need this parameter.
+            (3) The manufacturer name is not available for serial interfaces over Bluetooth.
+            </param>
+            <param name="Device_Available">
+            Returns the information if the device is available.
+            Devices that are not available are used by other applications.
+            
+            Notes:
+            (1) You may pass VI_NULL if you do not need this parameter.
+            
+            </param>
+            <returns>
+            This is the error code returned by the function call. For error codes and descriptions see &lt;Error Message&gt;.
+            
+            Completition Codes
             ----------------------------------------------------------------
-            For error codes and descriptions see &lt;Error Message&gt;.
+            VI_SUCCESS               Successful
+            VI_ERROR_INV_OBJECT      Index specifies an invalid object
+            
             </returns>
         </member>
         <member name="M:Thorlabs.TLBP2.Interop.TLBP2.self_test(System.Int16@,System.Text.StringBuilder)">
@@ -322,6 +426,60 @@
             VI_WARN_NSUP_REV_QUERY   Instrument revision query not supported
             
             
+            Vendor Specific Codes
+            ----------------------------------------------------------------
+            For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.identificationQuery(System.Text.StringBuilder,System.Text.StringBuilder,System.Text.StringBuilder)">
+            <summary>
+            This function returns the device identification information.
+            </summary>
+            <param name="Manufacturer_Name">
+            This parameter returns the manufacturer name.
+            
+            Notes:
+            (1) The array must contain at least 256 elements ViChar[256].
+            (2) You may pass VI_NULL if you do not need this value.
+            
+            </param>
+            <param name="Device_Name">
+            This parameter returns the device name.
+            
+            Notes:
+            (1) The array must contain at least 256 elements ViChar[256].
+            (2) You may pass VI_NULL if you do not need this value.
+            
+            </param>
+            <param name="Serial_Number">
+            This parameter returns the device serial number.
+            
+            Notes:
+            (1) The array must contain at least 256 elements ViChar[256].
+            (2) You may pass VI_NULL if you do not need this value.
+            
+            </param>
+            <returns>
+            This is the error code returned by the function call. For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_cpld_version(System.Text.StringBuilder)">
+            <summary>
+            Gets the version from the cpld inside the instrument.
+            The cpld version is written during the upload of the firmware.
+            </summary>
+            <param name="CPLD_Version">
+            Cpld version of the instrument.
+            The buffer for the cpld version has to be initialized with minimum 5 bytes.
+            </param>
+            <returns>
+            Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
+            
+            Completition Codes
+            ----------------------------------------------------------------
+            VI_SUCCESS                Get the cpld version.
+            
+            
             Vendor Specific Codes
             ----------------------------------------------------------------
             For error codes and descriptions see &lt;Error Message&gt;.
@@ -352,22 +510,35 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_service_mode(System.Byte)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_parameter(System.Byte[],System.Byte[],System.Byte[],System.Byte[])">
             <summary>
-            The protected service functions have to be enabled with this function.
-            Please enter the access code to enable all the service functions.
-            For users of the instrument who need some of the functions may find the corresponding function in the tree "Configuration Functions".
+            Gets the number of slits, the used slits, the slit lengths and widths.
+            
+            The buffer has to be initialized for maximal BP2_MAX_SLIT_COUNT slits.
             </summary>
-            <param name="Password">
-            Password to enable the service functions.
-            The password is only used for Thorlabs internal production and is not available for customers.
+            <param name="Slit_Used">
+            Gets the information if the slit is used.
+            0 = slit is not available
+            1 = slit is usable
+            </param>
+            <param name="Slit_Length">
+            Get the length in mm of each of the BP2_MAX_SLIT_COUNT slits.
+            </param>
+            <param name="Slit_Width">
+            Get the width in ?m of each of the BP2_MAX_SLIT_COUNT slits.
+            </param>
+            <param name="Slit_Orientation">
+            Get the orientation of the BP2_MAX_SLIT_COUNT slits.
+            0 = X
+            1 = Y
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set acces code successful.
+            VI_SUCCESS                Slit parameter query successful
+            
             
             
             Vendor Specific Codes
@@ -375,19 +546,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_instrument_name(System.Text.StringBuilder)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_offset_range(System.UInt16@,System.UInt16@)">
             <summary>
-            Get the model name of the slit beam profiler (e.g. "BP209-VIS").
+            Gets the offset range to correct the dark level.
+            
+            
             </summary>
-            <param name="Instrument_Name">
-            To get the instrument name the name buffer has to be initialized with 256 bytes and will be filled with the instrument name by this function.
+            <param name="Min_Offset">
+            Lower bound of the offset range in digits.
+            </param>
+            <param name="Max_Offset">
+            Upper bound of the offset range in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Get the instrument name.
+            VI_SUCCESS                Offset range query successful
+            
             
             
             Vendor Specific Codes
@@ -395,19 +572,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_instrument_name(System.String)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_offsets(System.Int16[],System.UInt16@)">
             <summary>
-            Sets the instrument name. The service mode has to be enabled to use this function.
+            Gets the currently used offset values for the slits.
             </summary>
-            <param name="Instrument_Name">
-            Instrument name with a maximal length of 10 characters.
+            <param name="Offset_Slits">
+            Array of offset value for the slits in digits.
+            </param>
+            <param name="Offset_Power">
+            Offset value for the power window in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Set the instrument name successful.
+            VI_SUCCESS                Start Offset query successful
             
             
             Vendor Specific Codes
@@ -415,20 +595,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_serial_number(System.Text.StringBuilder)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_offsets(System.Int16[],System.UInt16)">
             <summary>
-            Gets the serial number from the instrument.
+            Sets the currently used offset values for the slits.
             </summary>
-            <param name="Serial_Number">
-            Serial number of the instrument.
-            The buffer for the serial number has to be initialized with 256 bytes.
+            <param name="Offset_Slits">
+            Array of offset value for the slits in digits.
+            </param>
+            <param name="Offset_Power">
+            Array of offset value for the power window in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Get the serial number.
+            VI_SUCCESS                Set Offset operation successful
             
             
             Vendor Specific Codes
@@ -436,23 +618,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_serial_number(System.String)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_fwbias_range(System.UInt16@,System.UInt16@)">
             <summary>
-            Sets the serial number in ASCII format. (e.g. M00123456).
-            Format of the serial number: M + eight numerics + '\0'
+            Gets the forward bias range the photodiode of the instrument supports.
+            
             
-            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Serial_Number">
-            Sets the serial number.
-            Maximal 10 Bytes: 9 characters + '\0'.
+            <param name="Min_FWBias">
+            Lower bound of the forward bias in digits.
+            </param>
+            <param name="Max_FWBias">
+            Upper bound of the forward bias in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set serial number successful.
+            VI_SUCCESS                FW Bias range query successful
+            
             
             
             Vendor Specific Codes
@@ -460,32 +644,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_elapsed_time_counter(System.UInt16@,System.Byte@,System.Byte@,System.Byte@,System.Byte@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_fwbias(System.UInt16@)">
             <summary>
-            Gets the duration of the use of the device.
-            The elapsed time is separated into Years, Months, Days, Hours and Minutes.
+            Gets the current operating forward bias.
             </summary>
-            <param name="Years">
-            Get the elapsed years.
-            </param>
-            <param name="Months">
-            Get the elapsed months.
-            </param>
-            <param name="Days">
-            Get the elapsed days.
-            </param>
-            <param name="Hours">
-            Get the elapsed hours.
-            </param>
-            <param name="Minutes">
-            Get the elapsed minutes.
+            <param name="FW_Bias">
+            Forward bias in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS              query of the elapsed time successful.
+            VI_SUCCESS                Forward bias query successful
             
             
             Vendor Specific Codes
@@ -493,17 +664,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.update_elapsed_time_counter">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_fwbias(System.UInt16)">
             <summary>
-            Updates the elapsed time in the device.
-            Should be set periodically but not more than every 10 Minutes to protect the EEPROM of the device.
+            Sets the current operating forward bias in digits.
             </summary>
+            <param name="FW_Bias">
+            Forward bias in digits.
+            </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS              updating of the elapsed time successful.
+            VI_SUCCESS                Set forward bias operation successful
             
             
             Vendor Specific Codes
@@ -511,21 +684,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_cpld_version(System.Text.StringBuilder)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_gain_range(System.Byte@,System.Byte@)">
             <summary>
-            Gets the version from the cpld inside the instrument.
-            The cpld version is written during the upload of the firmware.
+            Get the range of the gain the instrument supports.
             </summary>
-            <param name="CPLD_Version">
-            Cpld version of the instrument.
-            The buffer for the cpld version has to be initialized with minimum 5 bytes.
+            <param name="Min_Gain">
+            Lower bound of the gain range.
+            </param>
+            <param name="Max_Gain">
+            Upper bound of the gain range.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Get the cpld version.
+            VI_SUCCESS                Get gain range operation successful
             
             
             Vendor Specific Codes
@@ -533,24 +707,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_wavelength_range(System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_gains(System.Byte[],System.Byte@)">
             <summary>
-            Gets the wavelength range the instruments supports.
-            The wavelength range can differ from the instrument model.
+            Gets the gains for each slit.
             </summary>
-            <param name="Min_Wavelength">
-            Lower bound of the wavelength range in nm.
+            <param name="Gain_Buffer">
+            Buffer of BP2_MAX_SLIT_COUNT elements which contains the gain for each slit.
             </param>
-            <param name="Max_Wavelength">
-            Upper bound of the wavelength range in nm.
+            <param name="Gain_Power">
+            Get the gain for the power window.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Wavelength range query successful
-            
+            VI_SUCCESS                Gain query operation successful
             
             
             Vendor Specific Codes
@@ -558,23 +730,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_wavelength_range(System.UInt16,System.UInt16)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_gains(System.Byte[],System.Byte)">
             <summary>
-            Sets the supported wavelength for the instrument in ?m.
-            The service mode has to be enabled to use this function.
+            Set the gains for each slit.
             </summary>
-            <param name="Min_Wavelength">
-            Minimum wavelength in nm.
+            <param name="Gain_Buffer">
+            Buffer of BP2_MAX_SLIT_COUNT elements which contains the gain for each slit.
             </param>
-            <param name="Max_Wavelength">
-            Maximum wavelength in nm.
+            <param name="Gain_Power">
+            Set the gain for the power window.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set Wavelength operation successful
+            VI_SUCCESS                Set gains operation successful
             
             
             Vendor Specific Codes
@@ -582,25 +753,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_start_offset_range(System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_auto_gain(System.Boolean@)">
             <summary>
-            Gets the start offset range the instruments supports.
-            
-            
+            Gets the automatic calculation of the gain.
+            Manual setting of a gain value will fail when auto gain is activated.
             </summary>
-            <param name="Min_Offset">
-            Lower bound of the offset range in digits.
-            </param>
-            <param name="Max_Offset">
-            Upper bound of the offset range in digits.
+            <param name="Auto_Gain">
+            Get the configuration if automatic calculation of the gain is activated.
+            VI_ON  = auto gain is active
+            VI_OFF = auto gain is inactive
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Offset range query successful
-            
+            VI_SUCCESS                Auto gain query operation successful
             
             
             Vendor Specific Codes
@@ -608,19 +776,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_start_offset(System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_auto_gain(System.Boolean)">
             <summary>
-            Gets the programmed start value of the offset where the instrument starts securely.
+            Sets the automatic calculation of the gain.
+            The gain will be corrected with every measurement and take effect in the next measurement.
+            
+            Manual setting of a gain value will fail when auto gain is activated.
             </summary>
-            <param name="Start_Offset">
-            Start Offset in digits.
+            <param name="Auto_Gain">
+            Set the configuration if automatic calculation of the gain has to be activated.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Start Offset query successful
+            VI_SUCCESS                Set auto gain operation successful
             
             
             Vendor Specific Codes
@@ -628,20 +799,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_start_offset(System.UInt16)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_bandwidth_range(System.Double@,System.Double@)">
             <summary>
-            Sets the start value for the offset where the instrument starts under every conditions.
-            The service mode has to be enabled to use this function.
+            Gets the bandwidth range in kHz the instruments supports.
+            
+            default: 16.00 to 2500 kHz
             </summary>
-            <param name="Offset">
-            Offset in digits. Maximal 0xFFFF.
+            <param name="Min_Bandwidth">
+            Lower bound of the bandwith range in kHz.
+            </param>
+            <param name="Max_Bandwidth">
+            Upper bound of the bandwith range in kHz.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set Offset operation successful
+            VI_SUCCESS                Bandwidth range query successful
+            
             
             
             Vendor Specific Codes
@@ -649,19 +825,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_drum_circum(System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_bandwidths(System.Double[])">
             <summary>
-            Gets the current operating drum circum in ?m/sqrt(2).
+            Gets the bandwidth for each slit in kHz.
             </summary>
-            <param name="Drum_Circum">
-            Drum Circum in ?m/sqrt(2).
+            <param name="Bandwidth_Buffer">
+            Buffer which contains the bandwidth in kHz for each of the maximal BP2_MAX_SLIT_COUNT slit.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Drum Circum query successful
+            VI_SUCCESS               Bandwidth query operation successful
             
             
             Vendor Specific Codes
@@ -669,20 +845,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_drum_circum(System.Double)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_bandwidths(System.Double[])">
             <summary>
-            Sets the current operating drum circum in ?m/sqrt(2).
-            The service mode has to be enabled to use this function.
+            Sets the bandwidth for each slit in kHz.
             </summary>
-            <param name="Drum_Circum">
-            Drum Circum in ?m/sqrt(2).
+            <param name="Bandwidth_Buffer">
+            Buffer which contains the bandwidth in kHz for each of the BP2_MAX_SLIT_COUNT slit.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set Drum Circum operation successful
+            VI_SUCCESS                Set bandwidth operation successful
             
             
             Vendor Specific Codes
@@ -690,24 +865,23 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_fwbias_range(System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_drum_speed_range(System.Double@,System.Double@)">
             <summary>
-            Gets the forward bias range the photodiode of the instrument supports.
-            
-            
+            Gets the speed range the instruments supports.
+            Default: 2.0 to 20.0 Hz.
             </summary>
-            <param name="Min_FWBias">
-            Lower bound of the forward bias in digits.
+            <param name="Min_Speed">
+            Lower bound of the speed range in drum rotation per second.
             </param>
-            <param name="Max_FWBias">
-            Upper bound of the forward bias in digits.
+            <param name="Max_Speed">
+            Upper bound of the speed range in drum rotation per second.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                FW Bias range query successful
+            VI_SUCCESS                Speed range query successful.
             
             
             
@@ -716,19 +890,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_fwbias(System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_averaged_drum_speed(System.Double@)">
             <summary>
-            Gets the current operating forward bias.
+            Gets the speed of the drum rotation per second.
+            The drum speed is calculated from the 156 segments of the elapsed time measurement.
             </summary>
-            <param name="FW_Bias">
-            Forward bias in digits.
+            <param name="Averaged_Drum_Speed">
+            Speed of the drum in rotation per second.
+            The value is the sum of the 156 elapsed times, divided by 156 and multiplied by 156.25. This value is more stable than the "Get Drum Speed" measurement.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Forward bias query successful
+            VI_SUCCESS                Averaged drum speed query successful
+            
             
             
             Vendor Specific Codes
@@ -736,19 +913,28 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_fwbias(System.UInt16)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_drum_speed_ex(System.Double,System.UInt16@,System.Double@)">
             <summary>
-            Sets the current operating forward bias in digits.
+            Sets the speed of the drum in rotations per seconds.
+            
+            The sample count and freqency is changed automatically.
             </summary>
-            <param name="FW_Bias">
-            Forward bias in digits.
+            <param name="Drum_Speed">
+            sets the speed of the drum in rotations per seconds.
+            Range of the speed: 2 to 20 U/sec.
+            </param>
+            <param name="Sample_Count">
+            Count of samples for a slit.
+            </param>
+            <param name="Sample_Resolution">
+            Mean distance in ?m between two samples.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set forward bias operation successful
+            VI_SUCCESS                Set speed operation successful
             
             
             Vendor Specific Codes
@@ -756,35 +942,24 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_parameter(System.Byte[],System.Byte[],System.Byte[],System.Byte[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_speed_correction(System.Boolean@)">
             <summary>
-            Gets the number of slits, the used slits, the slit lengths and widths.
-            
-            The buffer has to be initialized for maximal BP2_MAX_SLIT_COUNT slits.
+            Gets the automatic correction of the drum speed.
+            The target drum speed can be set by the function "set_drum_speed".
+            The drum speed will be corrected if the measured drum speed differs from the target drum speed by more than 0.5Hz.
+            The drum speed can increase with higher temperature or during longer measurements.
             </summary>
-            <param name="Slit_Used">
-            Gets the information if the slit is used.
-            0 = slit is not available
-            1 = slit is usable
-            </param>
-            <param name="Slit_Length">
-            Get the length in mm of each of the BP2_MAX_SLIT_COUNT slits.
-            </param>
-            <param name="Slit_Width">
-            Get the width in ?m of each of the BP2_MAX_SLIT_COUNT slits.
-            </param>
-            <param name="Slit_Orientation">
-            Get the orientation of the BP2_MAX_SLIT_COUNT slits.
-            0 = X
-            1 = Y
+            <param name="Auto_Correction">
+            Get the configuration if automatic correction of the drum speed is activated.
+            VI_ON  = auto correction is active
+            VI_OFF = auto correction is inactive
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Slit parameter query successful
-            
+            VI_SUCCESS                Auto correction query operation successful
             
             
             Vendor Specific Codes
@@ -792,36 +967,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_parameter(System.Byte[],System.Byte[],System.Byte[],System.Byte[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_speed_correction(System.Boolean)">
             <summary>
-            Sets the number of slits, the used slits, the slit lengths and widths.
-            Maximal BP2_MAX_SLIT_COUNT slits can be used.
-            The service mode has to be enabled to use this function.
+            With a higher temperature or longer measurements the drum speed can increase. This causes a complession of the beam profile in the calculation results. Then the beam profile may be clipped and the calculation results have false values. To avoid the drift the speed correction can be activated. If the measured drum speed differs from the target drum speed of more than 0.5 Hz the speed will corrected. This has the effect that the centroid moves to a new position if the speed correction is done. The effect depends on the position of the base line and the noise of the signal.
             </summary>
-            <param name="Slit_Used">
-            Sets if the slit has to be used.
-            
-            0 = do not use the slit
-            1 = the slit can be used.
-            </param>
-            <param name="Slit_Length">
-            Set the length in mm of each of the BP2_MAX_SLIT_COUNT slits.
-            </param>
-            <param name="Slit_Width">
-            Set the width in ?m of each of the BP2_MAX_SLIT_COUNT slits.
-            </param>
-            <param name="Slit_Orientation">
-            Set the orientation of the BP2_MAX_SLIT_COUNT slits.
-            0 = X
-            1 = Y
+            <param name="Auto_Correction">
+            Activate the automatic correction of the drum speed.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Slit parameter query successful
-            
+            VI_SUCCESS                Set correction operation successful
             
             
             Vendor Specific Codes
@@ -829,31 +987,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_sensor_response(System.Byte@,System.UInt16@,System.UInt16@,System.Byte@,System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_user_power_factor_range(System.Double@,System.Double@)">
             <summary>
-            This function returns the sensitivity curve for the photidiode in combination with the nd filter for the power measurement.
+            Gets the range for the power factor.
             </summary>
-            <param name="Response_Data_Count">
-            Get the number of valid data. Maximal 20 data can be returned.
-            </param>
-            <param name="Lowest_Wavelength">
-            Get the lowest wavelength in nm.
-            </param>
-            <param name="Highest_Wavelength">
-            Get the highest wavelength in nm.
-            </param>
-            <param name="Wavelength_Step">
-            Get the step in nm between two data.
+            <param name="Min_Power_Factor">
+            Lower bound of the power factor.
             </param>
-            <param name="Response_Data">
-            Buffer which contains maximal 20 data.
+            <param name="Max_Power_Factor">
+            Upper bound of the power factor.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS              sensor response query successful
+            VI_SUCCESS                Power factor range query successful
             
             
             
@@ -862,34 +1011,21 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_sensor_response(System.Byte,System.UInt16,System.UInt16,System.Byte,System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_user_power_factor(System.Double@)">
             <summary>
-            Sets sensitivity curve for the photodiode.
-            The curve for a VIS model differs from a UV model.
-            The service mode has to be enabled to use this function.
+            Get the User Power Correction Factor.
+            This factor takes effect on the calculation of the total power.
+            Total Power = Measured Power * User Factor.
             </summary>
-            <param name="Response_Data_Count">
-            Set the number of valid data. Maximal 20 data can be set.
-            </param>
-            <param name="Lowest_Wavelength">
-            Set the lowest wavelength in nm.
-            </param>
-            <param name="Highest_Wavelength">
-            Set the highest wavelength in nm.
-            </param>
-            <param name="Wavelength_Step">
-            Set the step in nm between two data.
-            </param>
-            <param name="Response_Data">
-            Buffer which contains maximal 20 data.
+            <param name="Power_Factor">
+            Get the Power Correction Factor.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Setting the sensor response successful
-            
+            VI_SUCCESS                Power factor query successful
             
             
             Vendor Specific Codes
@@ -897,30 +1033,28 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_construction_parameter(System.Byte@,System.Byte@,System.Byte@,System.Text.StringBuilder)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_user_power_factor(System.Double)">
             <summary>
-            Gets the date and name of the construction.
+            Set the User Power Correction Factor.
+            This factor takes effect on the calculation of the total power.
+            Total Power = Power calculated from the slit measurement * User Factor.
+            
+            To set the user power factor:
+            1. measure the power of your light source with an external power meter
+            2. set the user power factor to 1.0 and get the Total Power from the slit measurement.
+            3. Calculate the power factor. User power factor = external measured power / slit measured power.
+            
             </summary>
-            <param name="Constrution_Year">
-            Year of the construction.
-            </param>
-            <param name="Constrution_Month">
-            Month of the construction.
-            </param>
-            <param name="Constrution_Day">
-            Day of the construction.
-            </param>
-            <param name="Assembler_Name">
-            Name of the assembler.
-            The buffer can be filled with 8 characters.
+            <param name="Power_Factor">
+            Set the Power Correction Factor.
+            The power factor can be set in a range from 0.01 to 65.0.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS              Construction parameter query successful
-            
+            VI_SUCCESS                Set power factor operation successful
             
             
             Vendor Specific Codes
@@ -928,29 +1062,23 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_construction_parameter(System.Byte,System.Byte,System.Byte,System.String)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_wavelength_range(System.UInt16@,System.UInt16@)">
             <summary>
-            Sets name and date of the construction.
-            The service mode has to be enabled to use this function.
+            Gets the wavelength range the instruments supports.
+            The wavelength range can differ from the instrument model.
             </summary>
-            <param name="Constrution_Year">
-            Get the number of mounted slits.
-            </param>
-            <param name="Constrution_Month">
-            Get the number of mounted slits.
-            </param>
-            <param name="Constrution_Day">
-            Get the number of mounted slits.
+            <param name="Min_Wavelength">
+            Lower bound of the wavelength range in nm.
             </param>
-            <param name="Assembler_Name">
-            Name of the assembler. The buffer can contain up to 8 characters + '\0'.
+            <param name="Max_Wavelength">
+            Upper bound of the wavelength range in nm.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS        Setting the construction parameter successful
+            VI_SUCCESS                Wavelength range query successful
             
             
             
@@ -959,35 +1087,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_calibration_parameter(System.Byte@,System.Byte@,System.Byte@,System.Text.StringBuilder,System.Text.StringBuilder,System.Text.StringBuilder)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_wavelength(System.Double@)">
             <summary>
-            Gets the parameter of the calibration.
+            Returns the currently used wavelength in nm.
             </summary>
-            <param name="Calibration_Year">
-            Year of the calibration.
-            </param>
-            <param name="Calibration_Month">
-            Month of the calibration.
-            </param>
-            <param name="Calibration_Day">
-            Day of the calibration.
-            </param>
-            <param name="Calibration_Firmware">
-            Minimum size of the firmware buffer is 8 characters.
-            </param>
-            <param name="Calibration_SW_Version">
-            Length of the version buffer minimum 8 characters.
-            </param>
-            <param name="Assembler_Name">
-            Name of the assembler with maximal 8 characters.
+            <param name="Wavelength">
+            Get the currently used wavelength in nm.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS           Calibration parameter query successful
-            
+            VI_SUCCESS                Wavelength query successful
             
             
             Vendor Specific Codes
@@ -995,36 +1107,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_calibration_parameter(System.Byte,System.Byte,System.Byte,System.String,System.String,System.String)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_wavelength(System.Double)">
             <summary>
-            Sets the parameter of the calibration.
-            The service mode has to be enabled to use this function.
+            Set the wavelength in nm.
             </summary>
-            <param name="Calibration_Year">
-            Year of the calibration.
-            </param>
-            <param name="Calibration_Month">
-            Month of the calibration.
-            </param>
-            <param name="Calibration_Day">
-            Day of the calibration.
-            </param>
-            <param name="Calibration_Firmware">
-            Minimum size of the firmware buffer is 8 characters.
-            </param>
-            <param name="Calibration_SW_Version">
-            Minimum size of the firmware buffer is 8 characters.
-            </param>
-            <param name="Assembler_Name">
-            Name of the assembler with maximal 8 characters.
+            <param name="Wavelength">
+            Set the wavelength in nm for calculations.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS    Setting the calibration parameter successful
-            
+            VI_SUCCESS                Set wavelength operation successful
             
             
             Vendor Specific Codes
@@ -1032,25 +1127,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_position_range(System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_use_roi(System.Boolean@)">
             <summary>
-            Gets the position range of the slits.
-            
-            
+            Returns if the instrument uses a smaller ROI than the slit aperture.
             </summary>
-            <param name="Min_Position">
-            Lower bound of the slit position in digits.
-            </param>
-            <param name="Max_Position">
-            Upper bound of the slit position in digits.
+            <param name="Use_ROI">
+            Get the use of the ROI.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Slit position range query successful
-            
+            VI_SUCCESS                Use ROI query successful
             
             
             Vendor Specific Codes
@@ -1058,19 +1147,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_positions(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_use_roi(System.Boolean)">
             <summary>
-            Gets the current operating positions of the slits.
+            Activates or deactivates the use of the ROI.
             </summary>
-            <param name="Slit_Positions">
-            Array of positions with maximal MEAS_WINDOW_COUNT entries.
+            <param name="Use_ROI">
+            Sets the use of the ROI on or off.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Slit positions query successful
+            VI_SUCCESS                Setting the ROI Use successful
             
             
             Vendor Specific Codes
@@ -1078,37 +1167,27 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_positions(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_averaging(System.Byte@,Thorlabs.TLBP2.Interop.TLBP2AverageModes@)">
             <summary>
-            Sets the current operating slit positions in digits.
-            These values are used until the device is connected. Unplug the device will reset the positions to the last saved values.
-            
-            Default values:
-            
-            Slit_Positions[0] = 215; // position of the power window
-            Slit_Positions[1] = 482; // position of the power dark window
-                    
-            Slit_Positions[2] = 632; // position of the first slit
-            Slit_Positions[3] = 898; // position of the first dark window
-            
-            Slit_Positions[4] = 1048;// position of the second slit
-            Slit_Positions[5] = 1315;// position of the second dark window
-            
-            Slit_Positions[6] = 1465;// position of the third slit
-            		Slit_Positions[7] = 1732;	// position of the third dark window
-            
-            		Slit_Positions[8] = 1882;	// position of the fourth slit
-            		Slit_Positions[9] = 2149;	// position of the fourth dark window 	
+            Returns the number of scans which are averaged and the used averaging mode.
             </summary>
-            <param name="Slit_Positions">
-            Array with positions of the slits. Array has MEAS_WINDOW_COUNT entries.
+            <param name="Number_of_Scans_Averaged">
+            Get the number of scans that are averaged.
+            1 = No Averaing
+            2... 100 the intensities are summed over the scans and averaged.
+            All Calculations are done on the averaged data.
+            </param>
+            <param name="Average_Mode">
+            Mode how the scans are averaged.
+            0 = Rolling Averaging (The average over the last x measurements is calculated)
+            1 = Floating Averaging ( The new scan is added to the averaged scans)
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS             Set slit positions operation successful
+            VI_SUCCESS                Averaging query successful
             
             
             Vendor Specific Codes
@@ -1116,20 +1195,27 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.save_slit_positions(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_averaging(System.Byte,Thorlabs.TLBP2.Interop.TLBP2AverageModes)">
             <summary>
-            Sets the current operating slit positions in digits and stores them into the eeprom. 
-            The service mode has to be enabled to use this function.
+            Sets the number of scans which are averaged and the avaraging mode.
             </summary>
-            <param name="Slit_Positions">
-            Array with positions of the slits. Array has MEAS_WINDOW_COUNT entries.
+            <param name="Number_of_Scans_Averaged">
+            Set the number of scans that are averaged.
+            1 = No Averaing
+            2... 100 the intensities are summed over the scans and averaged.
+            All Calculations are done on the averaged data.
+            </param>
+            <param name="Average_Mode">
+            Mode how the scans are averaged.
+            0 = Rolling Averaging (The last x scans are summed up and averaged)
+            1 = Floating Averaging ( The new scan is added to the averaged scans)
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS             Save slit positions operation successful
+            VI_SUCCESS                Setting the Averaging successful
             
             
             Vendor Specific Codes
@@ -1137,19 +1223,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_positions_roi(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_scanning_method(System.Byte,System.Byte@)">
             <summary>
-            Gets the current operating positions of the slits in the ROI mode.
+            Returns the mode of a slit which is used to reconstruct the beam profile.
             </summary>
-            <param name="Slit_Positions_ROI">
-            Array of positions with maximal MEAS_WINDOW_COUNT entries.
+            <param name="Slit_Index">
+            The reconstruction mode of the slit identified by the index.
+            Slit index range: 0 to BP2_MAX_SLIT_COUNT - 1
+            </param>
+            <param name="Scanning_Method">
+            Mode how the scans are reconstructed.
+            0 = Slit scanning
+            1 = Knife-Edge Mode
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Slit positions roi query successful
+            VI_SUCCESS                Reconstruction mode query successful
             
             
             Vendor Specific Codes
@@ -1157,20 +1249,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_positions_roi(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_scanning_method(System.Byte,System.Byte)">
             <summary>
-            Sets the current operating slit positions in the ROI mode.
-            These values are only available until unplugging the instrument.
+            Sets the mode of a slit which is used to reconstruct the beam profile.
             </summary>
-            <param name="Slit_Positions_ROI">
-            Array of ROI positions of the slits with MEAS_WINDOW_COUNT entries.
+            <param name="Slit_Index">
+            The reconstruction mode of the slit identified by the index.
+            Slit index range: 0 to BP2_MAX_SLIT_COUNT - 1
+            </param>
+            <param name="Scanning_Method">
+            Mode how the scans are reconstructed.
+            0 = Slit scanning
+            1 = Derivated
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Set slit positions roi operation successful
+            VI_SUCCESS           Setting the reconstruction mode successful
             
             
             Vendor Specific Codes
@@ -1178,20 +1275,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.save_slit_positions_roi(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_clip_level(System.Single@)">
             <summary>
-            Sets the current operating slit positions for the ROI in digits and stores them into the eeprom. 
-            The service mode has to be enabled to use this function.
+            Returns the clip level where the calculations are made.
             </summary>
-            <param name="Slit_Positions_ROI">
-            Array with positions of the ROI slits. Array has MEAS_WINDOW_COUNT entries.
+            <param name="Clip_Level">
+            Clip Level in a range from 0.0 to 1.0.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS             Save slit positions operation successful
+            VI_SUCCESS                Clip Level query successful
             
             
             Vendor Specific Codes
@@ -1199,25 +1295,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_motor_dac_range(System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_clip_level(System.Single)">
             <summary>
-            Gets the motor dac range the instruments supports.
-            
-            
+            Set the clip level where the beam width is calculated.
             </summary>
-            <param name="Min_DAC_Value">
-            Lower bound of the motor dac value in digits.
-            </param>
-            <param name="Max_DAC_Value">
-            Upper bound of the motor dac value in digits.
+            <param name="Clip_Level">
+            Set the Clip Level in ragen from 0.0 to 1.0. 0.135 and 0.50 are common values.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Motor dac range query successful
-            
+            VI_SUCCESS                Setting the clip level successful
             
             
             Vendor Specific Codes
@@ -1225,19 +1315,21 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_motor_dac(System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_max_hold(System.Boolean@)">
             <summary>
-            Gets the current operating motor dac value.
+            Returns the use of the max hold function for a slit.
             </summary>
-            <param name="Motor_DAC_Value">
-            DAC value for the motor.
+            <param name="Max_Hold">
+            Is the max hold mode used?
+            ON  = Max hold is active
+            OFF = Max hold is inactive
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Motor dac value query successful
+            VI_SUCCESS                Max Hold use query successful
             
             
             Vendor Specific Codes
@@ -1245,19 +1337,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_motor_dac(System.UInt16)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_max_hold(System.Boolean)">
             <summary>
-            Set the DAC value for the motor.
+            Sets if only the maximum values of all scans are used for the calculation.
             </summary>
-            <param name="Motor_DAC_Value">
-            Set the DAC value for the motor.
+            <param name="Max_Hold">
+            Set the Use of Max Hold.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS             Set motor DAC value operation successful.
+            VI_SUCCESS           Setting the use of Max Hold successful
             
             
             Vendor Specific Codes
@@ -1265,22 +1357,32 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_motor_dac_5_20hz(System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_base_line(System.Byte,Thorlabs.TLBP2.Interop.TLBP2BaseLineModes@,System.Single@)">
             <summary>
-            Gets the current stored DAC value where the drum has a rotation frequency of 5 and 20 Hz.
+            Set the Auto Base Line Correction if the slit measurement contains a lot of ambient light. This measurement will reduce the influence of the ambient light.
+            
+            The base line calculated from the dark windows will be placed by the mean of the first 10 samples of the slit measurement.
+            Be sure that the beam profile is in the middle of the slit window and only the ambient light is measured within the first 10 samples.
             </summary>
-            <param name="DAC_Value_5Hz">
-            Calibrated dac value for a drum rotation of 5 Hz.
+            <param name="Slit_Index">
+            Index of the slit.
             </param>
-            <param name="DAC_Value_20Hz">
-            Calibrated dac value for a drum rotation of 20 Hz.
+            <param name="Mode">
+            Returns the mode how the base line is calculated.
+            
+            Mean of the intensities of the dark window.     (0)
+            Mean of the first 10 samples of the slit window (1)
+            Fixed user base line value                      (2)
+            </param>
+            <param name="Base_Line">
+            Returns the used base line fo the mode 'User Base Level'.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS               calibrated dac value query successful
+            VI_SUCCESS            Success of the base line query.
             
             
             Vendor Specific Codes
@@ -1288,23 +1390,34 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_motor_dac_5_20hz(System.UInt16,System.UInt16)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_base_line(System.Byte,Thorlabs.TLBP2.Interop.TLBP2BaseLineModes,System.Single)">
             <summary>
-            Sets the DAC value where the drum has a rotation frequency of 5 and 20 Hz.
-            The service mode has to be enabled to use this function.
+            Sets a digit value for the base line or automatic.
             </summary>
-            <param name="DAC_Value_5Hz">
-            Calibrated dac value where the drum rotates with 5 Hz.
+            <param name="Slit_Index">
+            Index of the slit.
             </param>
-            <param name="DAC_Value_20Hz">
-            Calibrated dac value where the drum rotates with 20Hz.
+            <param name="Mode">
+            Change the mode how the base line is calculated.
+            
+            Mean of the intensities of the dark window.     (0)
+            Mean of the first 10 samples of the slit window (1)
+            Fixed user base line value                      (2)
+            
+            </param>
+            <param name="Base_Line">
+            Manual digit value for the base line. This parameter has to be set if the mode is set to "User Base Level". Fo all other modes, this parameter is ignored.
+            
+            BaseLine &lt;= 0.1: The base line is calculated automatically from the dark windows.
+            
+            Base Line &gt; 0.1: The base line from the dark window is replaced by the Base Line value. The Base Line value is up to 65.535 digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS       Calibrated dac values operation successful.
+            VI_SUCCESS           Setting the base line successful
             
             
             Vendor Specific Codes
@@ -1312,25 +1425,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_motor_dac_2_5_20hz(System.UInt16@,System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_beam_width_correction(System.Byte,System.Boolean@)">
             <summary>
-            Gets the current stored DAC value where the drum has a rotation frequency of 2, 5 and 20 Hz.
+            Gets a correction for beam width smaller than the slit with.
             </summary>
-            <param name="DAC_Value_2Hz">
-            Calibrated dac value for a drum rotation of 2 Hz.
-            </param>
-            <param name="DAC_Value_5Hz">
-            Calibrated dac value for a drum rotation of 5 Hz.
+            <param name="Slit_Index">
+            Index of the slit.
             </param>
-            <param name="DAC_Value_20Hz">
-            Calibrated dac value for a drum rotation of 20 Hz.
+            <param name="Beam_Width_Correction">
+            Enables the correction.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS               calibrated dac value query successful
+            VI_SUCCESS          Query the beam width correction successful
             
             
             Vendor Specific Codes
@@ -1338,26 +1448,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_motor_dac_2_5_20hz(System.UInt16,System.UInt16,System.UInt16)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_beam_width_correction(System.Byte,System.Boolean)">
             <summary>
-            Sets the DAC value where the drum has a rotation frequency of 2, 5 and 20 Hz.
-            The service mode has to be enabled to use this function.
+            Sets a correction for beam width smaller than the slit with.
             </summary>
-            <param name="DAC_Value_2Hz">
-            Calibrated dac value where the drum rotates with 2 Hz.
-            </param>
-            <param name="DAC_Value_5Hz">
-            Calibrated dac value where the drum rotates with 5 Hz.
+            <param name="Slit_Index">
+            Index of the slit.
             </param>
-            <param name="DAC_Value_20Hz">
-            Calibrated dac value where the drum rotates with 20Hz.
+            <param name="Beam_Width_Correction">
+            Enables the correction.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS       Calibrated dac values operation successful.
+            VI_SUCCESS          Setting the beam width correction successful
             
             
             Vendor Specific Codes
@@ -1365,25 +1471,35 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_construction_operating_hours_counter(System.UInt16@,System.Byte@,System.Byte@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_calculation_area(System.Byte,System.Boolean@,System.Single@,System.Single@,System.Single@)">
             <summary>
-            Gets the elapsed time to the last construction date.
+            Returns the calculation area for the slit where the calculations are made.
             </summary>
-            <param name="Days">
-            Days to the last construction.
+            <param name="Slit_Index">
+            Index of the slit.
             </param>
-            <param name="Hours">
-            Hours to the last construction.
+            <param name="Mode">
+            Mode for the calculation area.
+            VI_ON  = automatic (default)
+            VI_OFF = manual
             </param>
-            <param name="Minutes">
-            MInutes to the last construction.
+            <param name="Automatic_Mode_Clip_Level">
+            Get the clip level for the automatic calculation area.
+            The clip level is a threshold from the peak intensity to the base line which includes the samples for calculation.
+            Clip Level in a range from 0.0 to 13.5.
+            </param>
+            <param name="Left_Border">
+            Position in ?m where the left border for the calculation area is.
+            </param>
+            <param name="Right_Border">
+            Position in ?m where the right border for the calculation area is.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS           construction hour query successful
+            VI_SUCCESS          Calculation Area query successful
             
             
             Vendor Specific Codes
@@ -1391,25 +1507,43 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_calibration_operating_hours_counter(System.UInt16@,System.Byte@,System.Byte@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_calculation_area(System.Byte,System.Boolean,System.Single,System.Single,System.Single)">
             <summary>
-            Gets the elapsed time to the last calibration date.
+            Sets the calculation area for the slit where the calculations are made.
             </summary>
-            <param name="Days">
-            Elapsed days to the last calibration.
+            <param name="Slit_Index">
+            Index of the slit.
             </param>
-            <param name="Hours">
-            Elapsed hours to the last calibration.
+            <param name="Mode">
+            Set the calculation area either automatic or manual.
+            Automatic = 1 = VI_ON  = true
+            Manual    = 0 = VI_OFF = false
+            
+            If the mode is set to "Automatic" then the parameter "Automatic Mode Clip Level" has to be set. The parameter "Left Border" and "Right Border" are ignored.
+            
+            If the mode is set to "Manual" then the parameter "Left Border" and "Right Border" have to be set. The parameter "Automatic Mode Clip Level" is ignored.
             </param>
-            <param name="Minutes">
-            Elapsed minutes to the last calibration.
+            <param name="Automatic_Mode_Clip_Level">
+            Set the clip level for the automatic calculation area. This parameter has to be set with the "Automatic Mode".
+            The clip level is a threshold in percent between the peak intensity and the base line.
+            A clip level of 0.01 means that beginning at the peak position and lookking in both directions to the edges of the measurement window, all samples that have an intensity higher than 1% of the range between the peak and the base line are used for calculations. With the first sample in each direction that is below the threshold, all further samples are not used.
+            
+            </param>
+            <param name="Left_Border">
+            Position in ?m where the left border of the calculation area is.
+            The range for the left border is from 0 to 9000?m. Sample intensitiey that are below the border are not used for the calculations.
+            </param>
+            <param name="Right_Border">
+            Position in ?m where the right border for the calculation area is.
+            The range for the right border is from 0 to 9000?m. Samples that are greater the border are not used for the calculations.
+            The right border has to be a greater value than the left border.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS           calibration hour query successful
+            VI_SUCCESS         Setting the Calculation Area successful
             
             
             Vendor Specific Codes
@@ -1417,16 +1551,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.reset_calibration_operating_hours_counter">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_position_correction(System.Boolean@)">
             <summary>
-            Resets the calibration date to the current date.
+            Gets a correction for the centroid and peak position. The correction translates the centroid and peak position under the influence of the bandwidth, gain and drum speed.
             </summary>
+            <param name="Position_Correction">
+            Enables the position correction.
+            
+            ON  = Position correction is active
+            OFF = Position correction is deactive
+            </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS           Set calibration date operation successful.
+            VI_SUCCESS          Query the position correction successful
             
             
             Vendor Specific Codes
@@ -1434,16 +1574,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.reset_construction_operating_hours_counter">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_position_correction(System.Boolean)">
             <summary>
-            Resets the construction date to the current date.
+            Sets a correction for the centroid and peak position. The correction translates the centroid and peak position under the influence of the bandwidth, gain and drum speed. This correction is used for this calculation result:
+            - centroid position
+            - peak position
+            - positions arrays for the slits
             </summary>
+            <param name="Position_Correction">
+            Enables the position correction.
+            </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Set construction date operation successful.
+            VI_SUCCESS          Setting the position correction successful
             
             
             Vendor Specific Codes
@@ -1451,19 +1597,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_power_factor(System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.getThorlabsBeamCompatibleCoordinateSystem(System.Boolean@)">
             <summary>
-            Get the Power Correction Factor from the eeprom of the device.
+            Return all positions in the coordinate system like Thorlabs Beam from -4500 ?m to 4500?m
             </summary>
-            <param name="Power_Factor">
-            Get the Power Correction Factor.
+            <param name="Compatibility_Mode">
+            
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Power factor query successful
+            VI_SUCCESS          Query the reference position successful
             
             
             Vendor Specific Codes
@@ -1471,20 +1617,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_power_factor(System.Double)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.setThorlabsBeamCompatibleCoordinateSystem(System.Boolean)">
             <summary>
-            Set the Power Correction Factor and stores the value in the eeprom of the device.
-            The service mode needs to be enabled to use this function.
+            Return all positions in the coordinate system like Thorlabs Beam from -4500 ?m to 4500?m
             </summary>
-            <param name="Power_Factor">
-            Set the Power Correction Factor.
+            <param name="Compatibility_Mode">
+            
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set power factor operation successful
+            VI_SUCCESS          Setting the reference position successful
             
             
             Vendor Specific Codes
@@ -1492,28 +1637,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_device_status(System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_flip_axis(System.Byte,System.Boolean@)">
             <summary>
-            This function queries the status register of the BP2.
-            
-            
+            Flips the axis of the specific slit
             </summary>
-            <param name="Device_Status">
-            This parameter returns the instruments status.
-            
-            // a new scan is available
-            BP2_STATUS_SCAN_AVAILABLE     0x00000001  
-            
-            // the drum speed has been stabilized 
-            BP2_STATUS_DRUM_STABILIZED    0x00000002 
+            <param name="Slit_Index">
+            Index of the slit.
+            </param>
+            <param name="Flip">
+            Flip state:
             
+            VI_ON: flip axis
+            VI_OFF: don't flip axis
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                device status query successful
+            VI_SUCCESS          Query the reference position successful
             
             
             Vendor Specific Codes
@@ -1521,24 +1663,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_samples_count_range(System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_flip_axis(System.Byte,System.Boolean)">
             <summary>
-            Gets the range of sample counts the instrument supports.
-            The sample count depends on the drum speed and the sample frequency.
+            Flips the axis of the specific slit
             </summary>
-            <param name="Min_Sample_Count">
-            Lower bound of the sample count.
+            <param name="Slit_Index">
+            Index of the slit.
             </param>
-            <param name="Max_Sample_Count">
-            Upper bound of the sample count.
+            <param name="Flip">
+            Flip state:
+            
+            VI_ON: flip axis
+            VI_OFF: don't flip axis
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Sample count range query successful
-            
+            VI_SUCCESS          Query the reference position successful
             
             
             Vendor Specific Codes
@@ -1546,20 +1689,31 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_samples_counts(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_reference_position(System.Byte,Thorlabs.TLBP2.Interop.TLBP2PositionPresets@,System.Double@)">
             <summary>
-            Gets the current operating slit sample buffer.
+            Gets the position offset which is added to the centroid and peak position.
             </summary>
-            <param name="Sample_Count_Buffer">
-            Buffer which contains the sample count for each slit.
-            Size of the buffer is BP2_MAX_SLIT_COUNT * 2 bytes = 8 bytes.
+            <param name="Slit_Index">
+            Index of the slit.
+            </param>
+            <param name="Preset">
+            Either fix the offset to a calulation parameter or set a user defined offset.
+            0 = Sensor Center
+            1 = Roi Center
+            2 = Peak Position
+            3 = Centroid Position
+            4 = User Position
+            </param>
+            <param name="Reference_Position">
+            Offset to the calculation parameter centroid and peak position in ?m.
+            Corrected Centroid Position = Reference Position - Centroid position
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Sample count buffer query successful
+            VI_SUCCESS          Query the reference position successful
             
             
             Vendor Specific Codes
@@ -1567,23 +1721,34 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_samples_counts(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_reference_position(System.Byte,Thorlabs.TLBP2.Interop.TLBP2PositionPresets,System.Double)">
             <summary>
-            Sets the current operating sample count for each slit.
-            Setting the sample count may change the sample frequency.
-            
-            Remark: Using the function "Set Drum Speed Extended" will overwrite the manual set sample count.
+            Gets the position offset which is added to the centroid and peak position.
+            This parameter only is used if the positin correction is activated with the function "set_position_correction(VI_TRUE)".
             </summary>
-            <param name="Sample_Count_Buffer">
-            Buffer which contains the sample count for each slit.
-            Size of the buffer is BP2_MAX_SLIT_COUNT * 2 bytes = 8 bytes.
-            </param>
+            <param name="Slit_Index">
+            Index of the slit.
+            </param>
+            <param name="Preset">
+            Either fix the offset to a calulation parameter or set a user defined offset.
+            0 = Sensor Center
+            1 = Roi Center
+            2 = Peak Position
+            3 = Centroid Position
+            4 = User Position
+            </param>
+            <param name="Reference_Position">
+            Offset to the calculation parameter centroid and peak position in ?m.
+            Corrected Centroid Position = Centroid position - Reference Position.
+            
+            Origin of the reference position is always top left corner (0,0) like in Thorlabs Beam.
+            </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Set sample count buffer operation successful.
+            VI_SUCCESS          Setting the reference position successful
             
             
             Vendor Specific Codes
@@ -1591,25 +1756,31 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_samples_frequency_range(System.Single@,System.Single@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_device_status(System.UInt16@)">
             <summary>
-            Gets the sample frequency range the instruments supports in kHz.
+            This function queries the status register of the BP2.
             
             
             </summary>
-            <param name="Min_Samples_Frequency">
-            Lower bound of the samples frequency in kHz.
-            </param>
-            <param name="Max_Samples_Frequency">
-            Upper bound of the samples frequency in kHz.
+            <param name="Device_Status">
+            This parameter returns the instruments status.
+            
+            // a new scan is available
+            BP2_STATUS_SCAN_AVAILABLE     0x0001  
+            
+            // the drum speed has been stabilized 
+            BP2_STATUS_DRUM_STABILIZED    0x0002 
+            
+            // the drum speed has been stabilized 
+            BP2_STATUS_DRUM_DESTABILIZED  0x0004 
+            
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS            Samples frequency range query successful.
-            
+            VI_SUCCESS                device status query successful
             
             
             Vendor Specific Codes
@@ -1617,19 +1788,39 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_samples_frequencies(System.Double[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_scan_data(Thorlabs.TLBP2.Interop.bp2_slit_data[],Thorlabs.TLBP2.Interop.bp2_calculations[],System.Double@,System.Single@,System.Double[])">
             <summary>
-            Gets the current operating samples frequency for each slit in kHz.
+            This function reads out the processed scan data. 
+            The beam profile is analyzed for each of the maximal BP2_MAX_SLIT_COUNT slits independently.
             </summary>
-            <param name="Samples_Frequencies_Buffer">
-            Buffer for the samples frequencies in kHz.
+            <param name="Slit_Data">
+            This buffer contains the data of each of the BP2_MAX_SLIT_COUNT slits. Please provide an array of BP2_MAX_SLIT_COUNT structures of BP2_SLIT_DATA.
+            
+            
+            To identify a slit, please use the function get_slit_parameter.
+            </param>
+            <param name="Calculation_Results">
+            Fills the data buffer with the calculation result for each slit.
+            The parameter is optional. You may pass VI_NULL if you don't need this parameter.
+            Please provide an array of BP2_MAX_SLIT_COUNT structures of BP2_CALCULATIONS.
+            </param>
+            <param name="Power">
+            Returns the power in mW of the drum segment with the ND filter.
+            You may pass VI_NULL if you don't need this parameter.
+            </param>
+            <param name="Power_Window_Saturation">
+            Returns the saturation of the power window in percent.
+            You may pass VI_NULL if you don't need this parameter.
+            </param>
+            <param name="Power_Intensities">
+            Fills a buffer of minimum 2128 entries with the intensities from the power window. You may pass VI_NULL if you don't need this parameter.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Samples frequencies query successful
+            VI_SUCCESS         Get the measurement data operation successful
             
             
             Vendor Specific Codes
@@ -1637,21 +1828,39 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_samples_frequencies(System.Double[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_knife_edge_reconstruction(Thorlabs.TLBP2.Interop.bp2_slit_data[],Thorlabs.TLBP2.Interop.bp2_calculations[],System.UInt16[],Thorlabs.TLBP2.Interop.bp2_slit_data[],Thorlabs.TLBP2.Interop.bp2_calculations[])">
             <summary>
-            Sets the current operating samples frequency for each slit.
-            
-            Remark: Using the function "Set Drum Speed Extended" will overwrite the manual set sample count.
+            This function calculates the knife edge data from the slit data.
             </summary>
-            <param name="Samples_Frequencies">
-            Frequency for the samples of each slit.
+            <param name="Slit_Data">
+            A buffer of max 7500 entries with the intensites of the slit data. The base level is substracted from the intensities. Max intensity value is 32767.
+            </param>
+            <param name="Calculation_Results">
+            A buffer with the calculation result for each slit.
+            </param>
+            <param name="Slit_Indices">
+            This array contains the information if the knife edge is calculated for this slit. If this parameter is not used, all slits become the knife edge data. This parameter is useful to increase the performance by suppress the calculation on slits that are not of interest.
+            
+            
+            Example for the calculation on the last two slits:
+            slit_indices[0] = VI_FALSE;
+            slit_indices[1] = VI_FALSE;
+            slit_indices[2] = VI_TRUE;
+            slit_indices[3] = VI_TRUE;
+            </param>
+            <param name="Slit_Data_Knife_Edge">
+            Fills the data buffer of max 7500 entries with the intensites of the slit data. The base level is substracted from the intensities. Max intensity value is 32767.
+            </param>
+            <param name="Calculation_Results_Knife_Edge">
+            Fills the data buffer with the calculation result for each slit.
+            The parameter is optional. If the calculations are not needed, please use VI_NULL as value instead of the calculations buffer.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Set samples frequencies operation successful
+            VI_SUCCESS         Get the measurement data operation successful
             
             
             Vendor Specific Codes
@@ -1659,25 +1868,34 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_offset_range(System.UInt16@,System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.calculate_ellipse(Thorlabs.TLBP2.Interop.bp2_calculations[],System.Single,System.Byte,System.Byte,System.Boolean,Thorlabs.TLBP2.Interop.bp2_ellipse_parameter@)">
             <summary>
-            Gets the offset range to correct the dark level.
+            This function reads out measured ellipse paramter.
+            </summary>
+            <param name="Calculation_Result">
+            Array with the calculation results of all slits.
+            </param>
+            <param name="Clip_Level">
             
+            </param>
+            <param name="Slit_Index_X">
+            Index of the slit of which the peak interests.
+            </param>
+            <param name="Slit_Index_Y">
+            Index of the slit of which the peak interests.
+            </param>
+            <param name="Approximated_Ellipse">
             
-            </summary>
-            <param name="Min_Offset">
-            Lower bound of the offset range in digits.
             </param>
-            <param name="Max_Offset">
-            Upper bound of the offset range in digits.
+            <param name="Ellipse_Parameter">
+            
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Offset range query successful
-            
+            VI_SUCCESS         Get peak parameter operation successful
             
             
             Vendor Specific Codes
@@ -1685,22 +1903,26 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_offsets(System.Int16[],System.UInt16@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.request_scan_data(System.Double@,System.Single@,System.Double[])">
             <summary>
-            Gets the currently used offset values for the slits.
+            This function reads a new measurement from the device and stores the calculation results internally.
             </summary>
-            <param name="Offset_Slits">
-            Array of offset value for the slits in digits.
+            <param name="Power">
+            Returns the power in mW of the drum segment with the ND filter.
             </param>
-            <param name="Offset_Power">
-            Offset value for the power window in digits.
+            <param name="Power_Window_Saturation">
+            Returns the saturation of the power window in percent.
+            If the parameter is not needed, use VI_NULL as value instead.
+            </param>
+            <param name="Power_Intensities">
+            Fills a buffer of minimum 2128 entries with the intensities from the power window. If the values are not needed please use the value VI_NULL instead of a buffer.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Start Offset query successful
+            VI_SUCCESS         Request measurement successful
             
             
             Vendor Specific Codes
@@ -1708,22 +1930,26 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_offsets(System.Int16[],System.UInt16)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_scan_data_information(System.Byte,System.UInt16@,System.Single@)">
             <summary>
-            Sets the currently used offset values for the slits.
+            This function reads out the processed scan data. 
             </summary>
-            <param name="Offset_Slits">
-            Array of offset value for the slits in digits.
+            <param name="Slit_Index">
+            Index of the slit which should be analyzed.
+            To identify a slit, please use the function get_slit_parameter.
             </param>
-            <param name="Offset_Power">
-            Array of offset value for the power window in digits.
+            <param name="Sample_Count">
+            Number of samples which are taken for the slit during the scan.
+            </param>
+            <param name="Dark_Level">
+            Dark level intensity in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set Offset operation successful
+            VI_SUCCESS         Get the measurement data operation successful
             
             
             Vendor Specific Codes
@@ -1731,22 +1957,26 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_gain_range(System.Byte@,System.Byte@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_sample_intensities(System.Byte,System.Double[],System.Double[])">
             <summary>
-            Get the range of the gain the instrument supports.
+            This function reads out the processed scan data. 
             </summary>
-            <param name="Min_Gain">
-            Lower bound of the gain range.
+            <param name="Slit_Index">
+            Index of the slit which data is of interest.
+            To identify a slit, please use the function get_slit_parameter.
             </param>
-            <param name="Max_Gain">
-            Upper bound of the gain range.
+            <param name="Sample_Intensities">
+            Fills the data buffer of max 7500 entries with the intensites of the slit data. The base level is substracted from the intensities. Max intensity value is 65535.
+            </param>
+            <param name="Sample_Positions">
+            Fills the data buffer of max 7500 entries with the positions of the slit data in ?m.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Get gain range operation successful
+            VI_SUCCESS         Get the measurement data operation successful
             
             
             Vendor Specific Codes
@@ -1754,22 +1984,28 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_gains(System.Byte[],System.Byte@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_peak(System.Byte,System.UInt16@,System.Single@,System.Single@)">
             <summary>
-            Gets the gains for each slit.
+            This function reads out measured peak parameter.
             </summary>
-            <param name="Gain_Buffer">
-            Buffer of BP2_MAX_SLIT_COUNT elements which contains the gain for each slit.
+            <param name="Slit_Index">
+            Index of the slit of which the peak interests.
             </param>
-            <param name="Gain_Power">
-            Get the gain for the power window.
+            <param name="Peak_Index">
+            Index of the peak in the data intensity buffer.
+            </param>
+            <param name="Peak_Position">
+            Position of the peak in ?m beginning from the first data in the intensity buffer.
+            </param>
+            <param name="Peak_Intensity">
+            Intensity of the peak in digits. The dark level is substracted.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Gain query operation successful
+            VI_SUCCESS         Get peak parameter operation successful
             
             
             Vendor Specific Codes
@@ -1777,22 +2013,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_gains(System.Byte[],System.Byte)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_centroid(System.Byte,System.UInt16@,System.Single@)">
             <summary>
-            Set the gains for each slit.
+            This function reads out the centroid parameter.
             </summary>
-            <param name="Gain_Buffer">
-            Buffer of BP2_MAX_SLIT_COUNT elements which contains the gain for each slit.
+            <param name="Slit_Index">
+            The index of the slit which should be analyzed for it's centroid.
             </param>
-            <param name="Gain_Power">
-            Set the gain for the power window.
+            <param name="Centroid_Index">
+            Index of the centroid in the intensity buffer.
+            </param>
+            <param name="Centroid_Position">
+            Position of the centroid in ?m beginning from the first data in the intensity buffer.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set gains operation successful
+            VI_SUCCESS       Get the centroid parameter operation successful
             
             
             Vendor Specific Codes
@@ -1800,22 +2039,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_auto_gain(System.Boolean@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_beam_width(System.Byte,System.Single@,System.Single@)">
             <summary>
-            Gets the automatic calculation of the gain.
-            Manual setting of a gain value will fail when auto gain is activated.
+            This function reads out the beam with measured at the clip level.
             </summary>
-            <param name="Auto_Gain">
-            Get the configuration if automatic calculation of the gain is activated.
-            VI_ON  = auto gain is active
-            VI_OFF = auto gain is inactive
+            <param name="Slit_Index">
+            Index of the slit which should give the beam width.
+            </param>
+            <param name="Beam_Width_Clip">
+            Beam width in ?m measured at the clip level.
+            </param>
+            <param name="Sigma_Width">
+            The sigma width is calculated of all scan data of this slit.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Auto gain query operation successful
+            VI_SUCCESS         Get the beam width operation successful
             
             
             Vendor Specific Codes
@@ -1823,22 +2065,31 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_auto_gain(System.Boolean)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_gaussian_fit(System.Byte,System.Single@,System.Single@,System.Single@,System.Double[])">
             <summary>
-            Sets the automatic calculation of the gain.
-            The gain will be corrected with every measurement and take effect in the next measurement.
-            
-            Manual setting of a gain value will fail when auto gain is activated.
+            This function reads out the gaussian parameter.
             </summary>
-            <param name="Auto_Gain">
-            Set the configuration if automatic calculation of the gain has to be activated.
+            <param name="Slit_Index">
+            Index of the slit which is analyzed for it's gaussian parameter.
+            </param>
+            <param name="Gaussian_Fit_Amplitude">
+            Intensity of the calculated gaussian fit curve. The intensity can be higher than the peak intensity of the beam.
+            </param>
+            <param name="Gaussian_Fit_Diameter">
+            Diameter of the gaussian curve.
+            </param>
+            <param name="Gaussian_Fit_Percentage">
+            Fit percentage of the gaussian curve to the scan data.
+            </param>
+            <param name="Gaussian_Fit_Intensities">
+            Array of maximal 7500 entries which contains the gaussian curve.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set auto gain operation successful
+            VI_SUCCESS       Get the gaussian parameter operation successful
             
             
             Vendor Specific Codes
@@ -1846,25 +2097,43 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_bandwidth_range(System.Double@,System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_ellipse_parameter(System.Byte,System.Byte,System.Boolean,System.Single@,System.Single@,System.Single@,System.Single@,System.Single@,System.Single@)">
             <summary>
-            Gets the bandwidth range in kHz the instruments supports.
-            
-            default: 16.00 to 2500 kHz
+            This function reads out measured ellipse paramter.
             </summary>
-            <param name="Min_Bandwidth">
-            Lower bound of the bandwith range in kHz.
+            <param name="Slit_Index_X">
+            Index of the slit of which the peak interests.
             </param>
-            <param name="Max_Bandwidth">
-            Upper bound of the bandwith range in kHz.
+            <param name="Slit_Index_Y">
+            Index of the slit of which the peak interests.
+            </param>
+            <param name="Approximated_Ellipse">
+            
+            </param>
+            <param name="Diameter_Min">
+            
+            </param>
+            <param name="Diameter_Max">
+            
+            </param>
+            <param name="Diameter_Mean">
+            
+            </param>
+            <param name="Ellipticity">
+            
+            </param>
+            <param name="Eccentricity">
+            
+            </param>
+            <param name="Orientation">
+            
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Bandwidth range query successful
-            
+            VI_SUCCESS         Get peak parameter operation successful
             
             
             Vendor Specific Codes
@@ -1872,19 +2141,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_bandwidths(System.Double[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_samples_frequency_range(System.Single@,System.Single@)">
             <summary>
-            Gets the bandwidth for each slit.
+            Gets the sample frequency range the instruments supports in kHz.
+            
+            
             </summary>
-            <param name="Bandwidth_Buffer">
-            Buffer which contains the bandwidth for each of the maximal BP2_MAX_SLIT_COUNT slit.
+            <param name="Min_Samples_Frequency">
+            Lower bound of the samples frequency in kHz.
+            </param>
+            <param name="Max_Samples_Frequency">
+            Upper bound of the samples frequency in kHz.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS               Bandwidth query operation successful
+            VI_SUCCESS            Samples frequency range query successful.
+            
             
             
             Vendor Specific Codes
@@ -1892,19 +2167,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_bandwidths(System.Double[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_samples_frequencies(System.Double[])">
             <summary>
-            Sets the bandwidth for each slit.
+            Gets the current operating samples frequency for each slit in kHz.
             </summary>
-            <param name="Bandwidth_Buffer">
-            Buffer which contains the bandwidth for each of the BP2_MAX_SLIT_COUNT slit.
+            <param name="Samples_Frequencies_Buffer">
+            Buffer for the samples frequencies in kHz.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set bandwidth operation successful
+            VI_SUCCESS                Samples frequencies query successful
             
             
             Vendor Specific Codes
@@ -1912,24 +2187,21 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_drum_speed_range(System.Double@,System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_samples_frequencies(System.Double[])">
             <summary>
-            Gets the speed range the instruments supports.
-            Default: 2.0 to 20.0 Hz.
+            Sets the current operating samples frequency for each slit.
+            
+            Remark: Using the function "Set Drum Speed Extended" will overwrite the manual set sample count.
             </summary>
-            <param name="Min_Speed">
-            Lower bound of the speed range in drum rotation per second.
-            </param>
-            <param name="Max_Speed">
-            Upper bound of the speed range in drum rotation per second.
+            <param name="Samples_Frequencies">
+            Frequency for the samples of each slit.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Speed range query successful.
-            
+            VI_SUCCESS          Set samples frequencies operation successful
             
             
             Vendor Specific Codes
@@ -1937,20 +2209,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_drum_speed(System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_service_mode(System.Byte)">
             <summary>
-            Gets the speed of the drum rotation per second.
+            The protected service functions have to be enabled with this function.
+            Please enter the access code to enable all the service functions.
+            For users of the instrument who need some of the functions may find the corresponding function in the tree "Configuration Functions".
             </summary>
-            <param name="Drum_Speed">
-            Speed of the drum in rotation per second.
+            <param name="Password">
+            Password to enable the service functions.
+            The password is only used for Thorlabs internal production and is not available for customers.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Speed query successful
-            
+            VI_SUCCESS                Set acces code successful.
             
             
             Vendor Specific Codes
@@ -1958,29 +2232,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_drum_speed(System.Double)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_instrument_name(System.Text.StringBuilder)">
             <summary>
-            Sets the speed of the drum in rotations per seconds.
-            
-            To use the full slit length (9mm) for your measurements, adopt the sample count and frequency to the new scan rate.
-            
-            Set the freqencies with the function "set_samples_frequencies":
-            sample_frequency_kHz = (sample_count / 1000) * (get_drum_circum / 1000 / slit_length_mm) *drum_speed_Hz.
-            
-            sample_frequency_kHz = (7500 / 1000) * ((55800*PI) / sqrt(2.0) / 1000 / 9)*10
-            
-            For a sample count of 7500 and a scan rate of 10 Hz, the samples frequency is 1033 kHz.
+            Get the model name of the slit beam profiler (e.g. "BP209-VIS").
             </summary>
-            <param name="Drum_Speed">
-            sets the speed of the drum in rotations per seconds.
-            Range of the speed: 0 to 20 U/sec.
+            <param name="Instrument_Name">
+            To get the instrument name the name buffer has to be initialized with 256 bytes and will be filled with the instrument name by this function.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set speed operation successful
+            VI_SUCCESS                Get the instrument name.
             
             
             Vendor Specific Codes
@@ -1988,28 +2252,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_drum_speed_ex(System.Double,System.UInt16@,System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_instrument_name(System.String)">
             <summary>
-            Sets the speed of the drum in rotations per seconds.
-            
-            The sample count and freqency is changed automatically.
+            Sets the instrument name. The service mode has to be enabled to use this function.
             </summary>
-            <param name="Drum_Speed">
-            sets the speed of the drum in rotations per seconds.
-            Range of the speed: 2 to 20 U/sec.
-            </param>
-            <param name="Sample_Count">
-            Count of samples for a slit.
-            </param>
-            <param name="Sample_Resolution">
-            Mean distance in ?m between two samples.
+            <param name="Instrument_Name">
+            Instrument name with a maximal length of 10 characters.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set speed operation successful
+            VI_SUCCESS          Set the instrument name successful.
             
             
             Vendor Specific Codes
@@ -2017,20 +2272,20 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.add_drum_speed_offset(System.Single)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_serial_number(System.Text.StringBuilder)">
             <summary>
-            Adds a speed to the current drum speed to correct the motor speed. Please call "Set Drum Speed" to see the effect. With "Clear Drum Offset" the offset can be resetted.
+            Gets the serial number from the instrument.
             </summary>
-            <param name="Drum_Speed_Offset">
-            corrects the speed of the drum in rotations per seconds.
-            Range of the correction speed: -3.0 to 3.0 U/sec.
+            <param name="Serial_Number">
+            Serial number of the instrument.
+            The buffer for the serial number has to be initialized with 256 bytes.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS           Set correction speed operation successful.
+            VI_SUCCESS                Get the serial number.
             
             
             Vendor Specific Codes
@@ -2038,16 +2293,23 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.clear_drum_speed_offset">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_serial_number(System.String)">
             <summary>
-            Clears the drum speed offset. This function is useful if the dum speed has been changed.
+            Sets the serial number in ASCII format. (e.g. M00123456).
+            Format of the serial number: M + eight numerics + '\0'
+            
+            The service mode has to be enabled to use this function.
             </summary>
+            <param name="Serial_Number">
+            Sets the serial number.
+            Maximal 10 Bytes: 9 characters + '\0'.
+            </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Clear correction speed operation successful.
+            VI_SUCCESS                Set serial number successful.
             
             
             Vendor Specific Codes
@@ -2055,24 +2317,32 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_speed_correction(System.Boolean@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_elapsed_time_counter(System.UInt16@,System.Byte@,System.Byte@,System.Byte@,System.Byte@)">
             <summary>
-            Gets the automatic correction of the drum speed.
-            The target drum speed can be set by the function "set_drum_speed".
-            The drum speed will be corrected if the measured drum speed differs from the target drum speed by more than 0.5Hz.
-            The drum speed can increase with higher temperature or during longer measurements.
+            Gets the duration of the use of the device.
+            The elapsed time is separated into Years, Months, Days, Hours and Minutes.
             </summary>
-            <param name="Auto_Correction">
-            Get the configuration if automatic correction of the drum speed is activated.
-            VI_ON  = auto correction is active
-            VI_OFF = auto correction is inactive
+            <param name="Years">
+            Get the elapsed years.
+            </param>
+            <param name="Months">
+            Get the elapsed months.
+            </param>
+            <param name="Days">
+            Get the elapsed days.
+            </param>
+            <param name="Hours">
+            Get the elapsed hours.
+            </param>
+            <param name="Minutes">
+            Get the elapsed minutes.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Auto correction query operation successful
+            VI_SUCCESS              query of the elapsed time successful.
             
             
             Vendor Specific Codes
@@ -2080,19 +2350,17 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_speed_correction(System.Boolean)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.update_elapsed_time_counter">
             <summary>
-            With a higher temperature or longer measurements the drum speed can increase. This causes a complession of the beam profile in the calculation results. Then the beam profile may be clipped and the calculation results have false values. To avoid the drift the speed correction can be activated. If the measured drum speed differs from the target drum speed of more than 0.5 Hz the speed will corrected. This has the effect that the centroid moves to a new position if the speed correction is done. The effect depends on the position of the base line and the noise of the signal.
+            Updates the elapsed time in the device.
+            Should be set periodically but not more than every 10 Minutes to protect the EEPROM of the device.
             </summary>
-            <param name="Auto_Correction">
-            Activate the automatic correction of the drum speed.
-            </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set correction operation successful
+            VI_SUCCESS              updating of the elapsed time successful.
             
             
             Vendor Specific Codes
@@ -2100,22 +2368,23 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_averaged_drum_speed(System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_wavelength_range(System.UInt16,System.UInt16)">
             <summary>
-            Gets the speed of the drum rotation per second.
-            The drum speed is calculated from the 156 segments of the elapsed time measurement.
+            Sets the supported wavelength for the instrument in ?m.
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Averaged_Drum_Speed">
-            Speed of the drum in rotation per second.
-            The value is the sum of the 156 elapsed times, divided by 156 and multiplied by 156.25. This value is more stable than the "Get Drum Speed" measurement.
+            <param name="Min_Wavelength">
+            Minimum wavelength in nm.
+            </param>
+            <param name="Max_Wavelength">
+            Maximum wavelength in nm.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Averaged drum speed query successful
-            
+            VI_SUCCESS                Set Wavelength operation successful
             
             
             Vendor Specific Codes
@@ -2123,22 +2392,24 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_user_power_factor_range(System.Double@,System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_start_offset_range(System.UInt16@,System.UInt16@)">
             <summary>
-            Gets the range for the power factor.
+            Gets the start offset range the instruments supports.
+            
+            
             </summary>
-            <param name="Min_Power_Factor">
-            Lower bound of the power factor.
+            <param name="Min_Offset">
+            Lower bound of the offset range in digits.
             </param>
-            <param name="Max_Power_Factor">
-            Upper bound of the power factor.
+            <param name="Max_Offset">
+            Upper bound of the offset range in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Power factor range query successful
+            VI_SUCCESS                Offset range query successful
             
             
             
@@ -2147,21 +2418,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_user_power_factor(System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_start_offset(System.UInt16@)">
             <summary>
-            Get the User Power Correction Factor.
-            This factor takes effect on the calculation of the total power.
-            Total Power = Measured Power * User Factor.
+            Gets the programmed start value of the offset where the instrument starts securely.
             </summary>
-            <param name="Power_Factor">
-            Get the Power Correction Factor.
+            <param name="Start_Offset">
+            Start Offset in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Power factor query successful
+            VI_SUCCESS                Start Offset query successful
             
             
             Vendor Specific Codes
@@ -2169,28 +2438,20 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_user_power_factor(System.Double)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_start_offset(System.UInt16)">
             <summary>
-            Set the User Power Correction Factor.
-            This factor takes effect on the calculation of the total power.
-            Total Power = Power calculated from the slit measurement * User Factor.
-            
-            To set the user power factor:
-            1. measure the power of your light source with an external power meter
-            2. set the user power factor to 1.0 and get the Total Power from the slit measurement.
-            3. Calculate the power factor. User power factor = external measured power / slit measured power.
-            
+            Sets the start value for the offset where the instrument starts under every conditions.
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Power_Factor">
-            Set the Power Correction Factor.
-            The power factor can be set in a range from 0.01 to 65.0.
+            <param name="Offset">
+            Offset in digits. Maximal 0xFFFF.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set power factor operation successful
+            VI_SUCCESS                Set Offset operation successful
             
             
             Vendor Specific Codes
@@ -2198,19 +2459,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_wavelength(System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_drum_circum(System.Double@)">
             <summary>
-            Returns the currently used wavelength in nm.
+            Gets the current operating drum circum in ?m/sqrt(2).
             </summary>
-            <param name="Wavelength">
-            Get the currently used wavelength in nm.
+            <param name="Drum_Circum">
+            Drum Circum in ?m/sqrt(2).
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Wavelength query successful
+            VI_SUCCESS                Drum Circum query successful
             
             
             Vendor Specific Codes
@@ -2218,19 +2479,20 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_wavelength(System.Double)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_drum_circum(System.Double)">
             <summary>
-            Set the wavelength in nm.
+            Sets the current operating drum circum in ?m/sqrt(2).
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Wavelength">
-            Set the wavelength in nm for calculations.
+            <param name="Drum_Circum">
+            Drum Circum in ?m/sqrt(2).
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Set wavelength operation successful
+            VI_SUCCESS                Set Drum Circum operation successful
             
             
             Vendor Specific Codes
@@ -2238,19 +2500,36 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_use_roi(System.Boolean@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_parameter(System.Byte[],System.Byte[],System.Byte[],System.Byte[])">
             <summary>
-            Returns if the instrument uses a smaller ROI than the slit aperture.
+            Sets the number of slits, the used slits, the slit lengths and widths.
+            Maximal BP2_MAX_SLIT_COUNT slits can be used.
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Use_ROI">
-            Get the use of the ROI.
+            <param name="Slit_Used">
+            Sets if the slit has to be used.
+            
+            0 = do not use the slit
+            1 = the slit can be used.
+            </param>
+            <param name="Slit_Length">
+            Set the length in mm of each of the BP2_MAX_SLIT_COUNT slits.
+            </param>
+            <param name="Slit_Width">
+            Set the width in ?m of each of the BP2_MAX_SLIT_COUNT slits.
+            </param>
+            <param name="Slit_Orientation">
+            Set the orientation of the BP2_MAX_SLIT_COUNT slits.
+            0 = X
+            1 = Y
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Use ROI query successful
+            VI_SUCCESS                Slit parameter query successful
+            
             
             
             Vendor Specific Codes
@@ -2258,19 +2537,32 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_use_roi(System.Boolean)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_sensor_response(System.Byte@,System.UInt16@,System.UInt16@,System.Byte@,System.Int16[])">
             <summary>
-            Activates or deactivates the use of the ROI.
+            This function returns the sensitivity curve for the photidiode in combination with the nd filter for the power measurement.
             </summary>
-            <param name="Use_ROI">
-            Sets the use of the ROI on or off.
+            <param name="Response_Data_Count">
+            Get the number of valid data. Maximal 20 data can be returned.
+            </param>
+            <param name="Lowest_Wavelength">
+            Get the lowest wavelength in nm.
+            </param>
+            <param name="Highest_Wavelength">
+            Get the highest wavelength in nm.
+            </param>
+            <param name="Wavelength_Step">
+            Get the step in nm between two data.
+            </param>
+            <param name="Response_Data">
+            Buffer which contains maximal 20 data.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Setting the ROI Use successful
+            VI_SUCCESS              sensor response query successful
+            
             
             
             Vendor Specific Codes
@@ -2278,27 +2570,34 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_averaging(System.Byte@,System.Byte@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_sensor_response(System.Byte,System.UInt16,System.UInt16,System.Byte,System.Int16[])">
             <summary>
-            Returns the number of scans which are averaged and the used averaging mode.
+            Sets sensitivity curve for the photodiode.
+            The curve for a VIS model differs from a UV model.
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Number_of_Scans_Averaged">
-            Get the number of scans that are averaged.
-            1 = No Averaing
-            2... 100 the intensities are summed over the scans and averaged.
-            All Calculations are done on the averaged data.
+            <param name="Response_Data_Count">
+            Set the number of valid data. Maximal 20 data can be set.
             </param>
-            <param name="Average_Mode">
-            Mode how the scans are averaged.
-            0 = Rolling Averaging (The average over the last x measurements is calculated)
-            1 = Floating Averaging ( The new scan is added to the averaged scans)
+            <param name="Lowest_Wavelength">
+            Set the lowest wavelength in nm.
+            </param>
+            <param name="Highest_Wavelength">
+            Set the highest wavelength in nm.
+            </param>
+            <param name="Wavelength_Step">
+            Set the step in nm between two data.
+            </param>
+            <param name="Response_Data">
+            Buffer which contains maximal 20 data.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Averaging query successful
+            VI_SUCCESS                Setting the sensor response successful
+            
             
             
             Vendor Specific Codes
@@ -2306,27 +2605,30 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_averaging(System.Byte,System.Byte)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_construction_parameter(System.Byte@,System.Byte@,System.Byte@,System.Text.StringBuilder)">
             <summary>
-            Sets the number of scans which are averaged and the avaraging mode.
+            Gets the date and name of the construction.
             </summary>
-            <param name="Number_of_Scans_Averaged">
-            Set the number of scans that are averaged.
-            1 = No Averaing
-            2... 100 the intensities are summed over the scans and averaged.
-            All Calculations are done on the averaged data.
+            <param name="Constrution_Year">
+            Year of the construction.
             </param>
-            <param name="Average_Mode">
-            Mode how the scans are averaged.
-            0 = Rolling Averaging (The last x scans are summed up and averaged)
-            1 = Floating Averaging ( The new scan is added to the averaged scans)
+            <param name="Constrution_Month">
+            Month of the construction.
+            </param>
+            <param name="Constrution_Day">
+            Day of the construction.
+            </param>
+            <param name="Assembler_Name">
+            Name of the assembler.
+            The buffer can be filled with 8 characters.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Setting the Averaging successful
+            VI_SUCCESS              Construction parameter query successful
+            
             
             
             Vendor Specific Codes
@@ -2334,25 +2636,30 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_scanning_method(System.Byte,System.Byte@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_construction_parameter(System.Byte,System.Byte,System.Byte,System.String)">
             <summary>
-            Returns the mode of a slit which is used to reconstruct the beam profile.
+            Sets name and date of the construction.
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Slit_Index">
-            The reconstruction mode of the slit identified by the index.
-            Slit index range: 0 to BP2_MAX_SLIT_COUNT - 1
+            <param name="Constrution_Year">
+            Get the number of mounted slits.
             </param>
-            <param name="Scanning_Method">
-            Mode how the scans are reconstructed.
-            0 = Slit scanning
-            1 = Knife-Edge Mode
+            <param name="Constrution_Month">
+            Get the number of mounted slits.
+            </param>
+            <param name="Constrution_Day">
+            Get the number of mounted slits.
+            </param>
+            <param name="Assembler_Name">
+            Name of the assembler. The buffer can contain up to 8 characters + '\0'.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Reconstruction mode query successful
+            VI_SUCCESS        Setting the construction parameter successful
+            
             
             
             Vendor Specific Codes
@@ -2360,25 +2667,35 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_scanning_method(System.Byte,System.Byte)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_calibration_parameter(System.Byte@,System.Byte@,System.Byte@,System.Text.StringBuilder,System.Text.StringBuilder,System.Text.StringBuilder)">
             <summary>
-            Sets the mode of a slit which is used to reconstruct the beam profile.
+            Gets the parameter of the calibration.
             </summary>
-            <param name="Slit_Index">
-            The reconstruction mode of the slit identified by the index.
-            Slit index range: 0 to BP2_MAX_SLIT_COUNT - 1
+            <param name="Calibration_Year">
+            Year of the calibration.
             </param>
-            <param name="Scanning_Method">
-            Mode how the scans are reconstructed.
-            0 = Slit scanning
-            1 = Derivated
+            <param name="Calibration_Month">
+            Month of the calibration.
+            </param>
+            <param name="Calibration_Day">
+            Day of the calibration.
+            </param>
+            <param name="Calibration_Firmware">
+            Minimum size of the firmware buffer is 8 characters.
+            </param>
+            <param name="Calibration_SW_Version">
+            Length of the version buffer minimum 8 characters.
+            </param>
+            <param name="Assembler_Name">
+            Name of the assembler with maximal 8 characters.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS           Setting the reconstruction mode successful
+            VI_SUCCESS           Calibration parameter query successful
+            
             
             
             Vendor Specific Codes
@@ -2386,19 +2703,36 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_clip_level(System.Single@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_calibration_parameter(System.Byte,System.Byte,System.Byte,System.String,System.String,System.String)">
             <summary>
-            Returns the clip level where the calculations are made.
+            Sets the parameter of the calibration.
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Clip_Level">
-            Clip Level in a range from 0.0 to 1.0.
+            <param name="Calibration_Year">
+            Year of the calibration.
+            </param>
+            <param name="Calibration_Month">
+            Month of the calibration.
+            </param>
+            <param name="Calibration_Day">
+            Day of the calibration.
+            </param>
+            <param name="Calibration_Firmware">
+            Minimum size of the firmware buffer is 8 characters.
+            </param>
+            <param name="Calibration_SW_Version">
+            Minimum size of the firmware buffer is 8 characters.
+            </param>
+            <param name="Assembler_Name">
+            Name of the assembler with maximal 8 characters.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Clip Level query successful
+            VI_SUCCESS    Setting the calibration parameter successful
+            
             
             
             Vendor Specific Codes
@@ -2406,19 +2740,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_clip_level(System.Single)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_position_range(System.UInt16@,System.UInt16@)">
             <summary>
-            Set the clip level where the beam width is calculated.
+            Gets the position range of the slits.
+            
+            
             </summary>
-            <param name="Clip_Level">
-            Set the Clip Level in ragen from 0.0 to 1.0. 0.135 and 0.50 are common values.
+            <param name="Min_Position">
+            Lower bound of the slit position in digits.
+            </param>
+            <param name="Max_Position">
+            Upper bound of the slit position in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Setting the clip level successful
+            VI_SUCCESS                Slit position range query successful
+            
             
             
             Vendor Specific Codes
@@ -2426,21 +2766,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_max_hold(System.Boolean@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_positions(System.Int16[])">
             <summary>
-            Returns the use of the max hold function for a slit.
+            Gets the current operating positions of the slits.
             </summary>
-            <param name="Max_Hold">
-            Is the max hold mode used?
-            ON  = Max hold is active
-            OFF = Max hold is inactive
+            <param name="Slit_Positions">
+            Array of positions with maximal MEAS_WINDOW_COUNT entries.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Max Hold use query successful
+            VI_SUCCESS                Slit positions query successful
             
             
             Vendor Specific Codes
@@ -2448,19 +2786,120 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_max_hold(System.Boolean)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_positions(System.Int16[])">
             <summary>
-            Sets if only the maximum values of all scans are used for the calculation.
+            Sets the current operating slit positions in digits.
+            These values are used until the device is connected. Unplug the device will reset the positions to the last saved values.
+            
+            Default values:
+            
+            Slit_Positions[0] = 215; // position of the power window
+            Slit_Positions[1] = 482; // position of the power dark window
+                    
+            Slit_Positions[2] = 632; // position of the first slit
+            Slit_Positions[3] = 898; // position of the first dark window
+            
+            Slit_Positions[4] = 1048;// position of the second slit
+            Slit_Positions[5] = 1315;// position of the second dark window
+            
+            Slit_Positions[6] = 1465;// position of the third slit
+            		Slit_Positions[7] = 1732;	// position of the third dark window
+            
+            		Slit_Positions[8] = 1882;	// position of the fourth slit
+            		Slit_Positions[9] = 2149;	// position of the fourth dark window 	
             </summary>
-            <param name="Max_Hold">
-            Set the Use of Max Hold.
+            <param name="Slit_Positions">
+            Array with positions of the slits. Array has MEAS_WINDOW_COUNT entries.
+            </param>
+            <returns>
+            Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
+            
+            Completition Codes
+            ----------------------------------------------------------------
+            VI_SUCCESS             Set slit positions operation successful
+            
+            
+            Vendor Specific Codes
+            ----------------------------------------------------------------
+            For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.save_slit_positions(System.Int16[])">
+            <summary>
+            Sets the current operating slit positions in digits and stores them into the eeprom. 
+            The service mode has to be enabled to use this function.
+            </summary>
+            <param name="Slit_Positions">
+            Array with positions of the slits. Array has MEAS_WINDOW_COUNT entries.
+            </param>
+            <returns>
+            Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
+            
+            Completition Codes
+            ----------------------------------------------------------------
+            VI_SUCCESS             Save slit positions operation successful
+            
+            
+            Vendor Specific Codes
+            ----------------------------------------------------------------
+            For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_positions_roi(System.Int16[])">
+            <summary>
+            Gets the current operating positions of the slits in the ROI mode.
+            </summary>
+            <param name="Slit_Positions_ROI">
+            Array of positions with maximal MEAS_WINDOW_COUNT entries.
+            </param>
+            <returns>
+            Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
+            
+            Completition Codes
+            ----------------------------------------------------------------
+            VI_SUCCESS                Slit positions roi query successful
+            
+            
+            Vendor Specific Codes
+            ----------------------------------------------------------------
+            For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_positions_roi(System.Int16[])">
+            <summary>
+            Sets the current operating slit positions in the ROI mode.
+            These values are only available until unplugging the instrument.
+            </summary>
+            <param name="Slit_Positions_ROI">
+            Array of ROI positions of the slits with MEAS_WINDOW_COUNT entries.
+            </param>
+            <returns>
+            Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
+            
+            Completition Codes
+            ----------------------------------------------------------------
+            VI_SUCCESS          Set slit positions roi operation successful
+            
+            
+            Vendor Specific Codes
+            ----------------------------------------------------------------
+            For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.save_slit_positions_roi(System.Int16[])">
+            <summary>
+            Sets the current operating slit positions for the ROI in digits and stores them into the eeprom. 
+            The service mode has to be enabled to use this function.
+            </summary>
+            <param name="Slit_Positions_ROI">
+            Array with positions of the ROI slits. Array has MEAS_WINDOW_COUNT entries.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS           Setting the use of Max Hold successful
+            VI_SUCCESS             Save slit positions operation successful
             
             
             Vendor Specific Codes
@@ -2468,32 +2907,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_base_line(System.Byte,System.Byte@,System.Single@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_motor_dac_range(System.UInt16@,System.UInt16@)">
             <summary>
-            Set the Auto Base Line Correction if the slit measurement contains a lot of ambient light. This measurement will reduce the influence of the ambient light.
+            Gets the motor dac range the instruments supports.
             
-            The base line calculated from the dark windows will be placed by the mean of the first 10 samples of the slit measurement.
-            Be sure that the beam profile is in the middle of the slit window and only the ambient light is measured within the first 10 samples.
-            </summary>
-            <param name="Slit_Index">
-            Index of the slit.
-            </param>
-            <param name="Mode">
-            Returns the mode how the base line is calculated.
             
-            Mean of the intensities of the dark window.     (0)
-            Mean of the first 10 samples of the slit window (1)
-            Fixed user base line value                      (2)
+            </summary>
+            <param name="Min_DAC_Value">
+            Lower bound of the motor dac value in digits.
             </param>
-            <param name="Base_Line">
-            Returns the used base line fo the mode 'User Base Level'.
+            <param name="Max_DAC_Value">
+            Upper bound of the motor dac value in digits.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS            Success of the base line query.
+            VI_SUCCESS                Motor dac range query successful
+            
             
             
             Vendor Specific Codes
@@ -2501,34 +2933,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_base_line(System.Byte,System.Byte,System.Single)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_motor_dac(System.UInt16@)">
             <summary>
-            Sets a digit value for the base line or automatic.
+            Gets the current operating motor dac value.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit.
-            </param>
-            <param name="Mode">
-            Change the mode how the base line is calculated.
-            
-            Mean of the intensities of the dark window.     (0)
-            Mean of the first 10 samples of the slit window (1)
-            Fixed user base line value                      (2)
-            
-            </param>
-            <param name="Base_Line">
-            Manual digit value for the base line. This parameter has to be set if the mode is set to "User Base Level". Fo all other modes, this parameter is ignored.
-            
-            BaseLine &lt;= 0.1: The base line is calculated automatically from the dark windows.
-            
-            Base Line &gt; 0.1: The base line from the dark window is replaced by the Base Line value. The Base Line value is up to 65.535 digits.
+            <param name="Motor_DAC_Value">
+            DAC value for the motor.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS           Setting the base line successful
+            VI_SUCCESS                Motor dac value query successful
             
             
             Vendor Specific Codes
@@ -2536,22 +2953,19 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_beam_width_correction(System.Byte,System.Boolean@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_motor_dac(System.UInt16)">
             <summary>
-            Gets a correction for beam width smaller than the slit with.
+            Set the DAC value for the motor.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit.
-            </param>
-            <param name="Beam_Width_Correction">
-            Enables the correction.
+            <param name="Motor_DAC_Value">
+            Set the DAC value for the motor.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Query the beam width correction successful
+            VI_SUCCESS             Set motor DAC value operation successful.
             
             
             Vendor Specific Codes
@@ -2559,22 +2973,22 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_beam_width_correction(System.Byte,System.Boolean)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_motor_dac_5_20hz(System.UInt16@,System.UInt16@)">
             <summary>
-            Sets a correction for beam width smaller than the slit with.
+            Gets the current stored DAC value where the drum has a rotation frequency of 5 and 20 Hz.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit.
+            <param name="DAC_Value_5Hz">
+            Calibrated dac value for a drum rotation of 5 Hz.
             </param>
-            <param name="Beam_Width_Correction">
-            Enables the correction.
+            <param name="DAC_Value_20Hz">
+            Calibrated dac value for a drum rotation of 20 Hz.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Setting the beam width correction successful
+            VI_SUCCESS               calibrated dac value query successful
             
             
             Vendor Specific Codes
@@ -2582,35 +2996,23 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_calculation_area(System.Byte,System.Boolean@,System.Single@,System.Single@,System.Single@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_motor_dac_5_20hz(System.UInt16,System.UInt16)">
             <summary>
-            Returns the calculation area for the slit where the calculations are made.
+            Sets the DAC value where the drum has a rotation frequency of 5 and 20 Hz.
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit.
-            </param>
-            <param name="Mode">
-            Mode for the calculation area.
-            VI_ON  = automatic (default)
-            VI_OFF = manual
-            </param>
-            <param name="Automatic_Mode_Clip_Level">
-            Get the clip level for the automatic calculation area.
-            The clip level is a threshold from the peak intensity to the base line which includes the samples for calculation.
-            Clip Level in a range from 0.0 to 13.5.
-            </param>
-            <param name="Left_Border">
-            Position in ?m where the left border for the calculation area is.
+            <param name="DAC_Value_5Hz">
+            Calibrated dac value where the drum rotates with 5 Hz.
             </param>
-            <param name="Right_Border">
-            Position in ?m where the right border for the calculation area is.
+            <param name="DAC_Value_20Hz">
+            Calibrated dac value where the drum rotates with 20Hz.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Calculation Area query successful
+            VI_SUCCESS       Calibrated dac values operation successful.
             
             
             Vendor Specific Codes
@@ -2618,43 +3020,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_calculation_area(System.Byte,System.Boolean,System.Single,System.Single,System.Single)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_motor_dac_2_5_20hz(System.UInt16@,System.UInt16@,System.UInt16@)">
             <summary>
-            Sets the calculation area for the slit where the calculations are made.
+            Gets the current stored DAC value where the drum has a rotation frequency of 2, 5 and 20 Hz.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit.
-            </param>
-            <param name="Mode">
-            Set the calculation area either automatic or manual.
-            Automatic = 1 = VI_ON  = true
-            Manual    = 0 = VI_OFF = false
-            
-            If the mode is set to "Automatic" then the parameter "Automatic Mode Clip Level" has to be set. The parameter "Left Border" and "Right Border" are ignored.
-            
-            If the mode is set to "Manual" then the parameter "Left Border" and "Right Border" have to be set. The parameter "Automatic Mode Clip Level" is ignored.
-            </param>
-            <param name="Automatic_Mode_Clip_Level">
-            Set the clip level for the automatic calculation area. This parameter has to be set with the "Automatic Mode".
-            The clip level is a threshold in percent between the peak intensity and the base line.
-            A clip level of 0.01 means that beginning at the peak position and lookking in both directions to the edges of the measurement window, all samples that have an intensity higher than 1% of the range between the peak and the base line are used for calculations. With the first sample in each direction that is below the threshold, all further samples are not used.
-            
+            <param name="DAC_Value_2Hz">
+            Calibrated dac value for a drum rotation of 2 Hz.
             </param>
-            <param name="Left_Border">
-            Position in ?m where the left border of the calculation area is.
-            The range for the left border is from 0 to 9000?m. Samples that are below the border are not used for the calculations.
+            <param name="DAC_Value_5Hz">
+            Calibrated dac value for a drum rotation of 5 Hz.
             </param>
-            <param name="Right_Border">
-            Position in ?m where the right border for the calculation area is.
-            The range for the right border is from 0 to 9000?m. Samples that are greater the border are not used for the calculations.
-            The right border has to be a greater value than the left border.
+            <param name="DAC_Value_20Hz">
+            Calibrated dac value for a drum rotation of 20 Hz.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Setting the Calculation Area successful
+            VI_SUCCESS               calibrated dac value query successful
             
             
             Vendor Specific Codes
@@ -2662,22 +3046,26 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_position_correction(System.Boolean@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_motor_dac_2_5_20hz(System.UInt16,System.UInt16,System.UInt16)">
             <summary>
-            Gets a correction for the centroid and peak position. The correction translates the centroid and peak position under the influence of the bandwidth, gain and drum speed.
+            Sets the DAC value where the drum has a rotation frequency of 2, 5 and 20 Hz.
+            The service mode has to be enabled to use this function.
             </summary>
-            <param name="Position_Correction">
-            Enables the position correction.
-            
-            ON  = Position correction is active
-            OFF = Position correction is deactive
+            <param name="DAC_Value_2Hz">
+            Calibrated dac value where the drum rotates with 2 Hz.
+            </param>
+            <param name="DAC_Value_5Hz">
+            Calibrated dac value where the drum rotates with 5 Hz.
+            </param>
+            <param name="DAC_Value_20Hz">
+            Calibrated dac value where the drum rotates with 20Hz.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Query the position correction successful
+            VI_SUCCESS       Calibrated dac values operation successful.
             
             
             Vendor Specific Codes
@@ -2685,22 +3073,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_position_correction(System.Boolean)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_construction_operating_hours_counter(System.UInt16@,System.Byte@,System.Byte@)">
             <summary>
-            Sets a correction for the centroid and peak position. The correction translates the centroid and peak position under the influence of the bandwidth, gain and drum speed. This correction is used for this calculation result:
-            - centroid position
-            - peak position
-            - positions arrays for the slits
+            Gets the elapsed time to the last construction date.
             </summary>
-            <param name="Position_Correction">
-            Enables the position correction.
+            <param name="Days">
+            Days to the last construction.
+            </param>
+            <param name="Hours">
+            Hours to the last construction.
+            </param>
+            <param name="Minutes">
+            MInutes to the last construction.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Setting the position correction successful
+            VI_SUCCESS           construction hour query successful
             
             
             Vendor Specific Codes
@@ -2708,31 +3099,25 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_reference_position(System.Byte,System.Byte@,System.Double@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_calibration_operating_hours_counter(System.UInt16@,System.Byte@,System.Byte@)">
             <summary>
-            Gets the position offset which is added to the centroid and peak position.
+            Gets the elapsed time to the last calibration date.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit.
+            <param name="Days">
+            Elapsed days to the last calibration.
             </param>
-            <param name="Preset">
-            Either fix the offset to a calulation parameter or set a user defined offset.
-            0 = Sensor Center
-            1 = Roi Center
-            2 = Peak Position
-            3 = Centroid Position
-            4 = User Position
+            <param name="Hours">
+            Elapsed hours to the last calibration.
             </param>
-            <param name="Reference_Position">
-            Offset to the calculation parameter centroid and peak position in ?m.
-            Corrected Centroid Position = Reference Position - Centroid position
+            <param name="Minutes">
+            Elapsed minutes to the last calibration.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Query the reference position successful
+            VI_SUCCESS           calibration hour query successful
             
             
             Vendor Specific Codes
@@ -2740,32 +3125,16 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_reference_position(System.Byte,System.Byte,System.Double)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.reset_calibration_operating_hours_counter">
             <summary>
-            Gets the position offset which is added to the centroid and peak position.
-            This parameter only is used if the positin correction is activated with the function "set_position_correction(VI_TRUE)".
+            Resets the calibration date to the current date.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit.
-            </param>
-            <param name="Preset">
-            Either fix the offset to a calulation parameter or set a user defined offset.
-            0 = Sensor Center
-            1 = Roi Center
-            2 = Peak Position
-            3 = Centroid Position
-            4 = User Position
-            </param>
-            <param name="Reference_Position">
-            Offset to the calculation parameter centroid and peak position in ?m.
-            Corrected Centroid Position = Reference Position - Centroid position
-            </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS          Setting the reference position successful
+            VI_SUCCESS           Set calibration date operation successful.
             
             
             Vendor Specific Codes
@@ -2773,39 +3142,36 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_scan_data(Thorlabs.TLBP2.Interop.bp2_slit_data[],Thorlabs.TLBP2.Interop.bp2_calculations[],System.Double@,System.Single@,System.Double[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.reset_construction_operating_hours_counter">
             <summary>
-            This function reads out the processed scan data. 
-            The beam profile is analyzed for each of the maximal BP2_MAX_SLIT_COUNT slits independently.
+            Resets the construction date to the current date.
             </summary>
-            <param name="Slit_Data">
-            This buffer contains the data of each of the BP2_MAX_SLIT_COUNT slits. Please provide an array of BP2_MAX_SLIT_COUNT structures of BP2_SLIT_DATA.
+            <returns>
+            Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
+            Completition Codes
+            ----------------------------------------------------------------
+            VI_SUCCESS          Set construction date operation successful.
             
-            To identify a slit, please use the function get_slit_parameter.
-            </param>
-            <param name="Calculation_Results">
-            Fills the data buffer with the calculation result for each slit.
-            The parameter is optional. You may pass VI_NULL if you don't need this parameter.
-            Please provide an array of BP2_MAX_SLIT_COUNT structures of BP2_CALCULATIONS.
-            </param>
-            <param name="Power">
-            Returns the power in mW of the drum segment with the ND filter.
-            You may pass VI_NULL if you don't need this parameter.
-            </param>
-            <param name="Power_Window_Saturation">
-            Returns the saturation of the power window in percent.
-            You may pass VI_NULL if you don't need this parameter.
-            </param>
-            <param name="Power_Intensities">
-            Fills a buffer of minimum 2128 entries with the intensities from the power window. You may pass VI_NULL if you don't need this parameter.
+            
+            Vendor Specific Codes
+            ----------------------------------------------------------------
+            For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
+        </member>
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_power_factor(System.Double@)">
+            <summary>
+            Get the Power Correction Factor from the eeprom of the device.
+            </summary>
+            <param name="Power_Factor">
+            Get the Power Correction Factor.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Get the measurement data operation successful
+            VI_SUCCESS                Power factor query successful
             
             
             Vendor Specific Codes
@@ -2813,39 +3179,20 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_knife_edge_reconstruction(Thorlabs.TLBP2.Interop.bp2_slit_data[],Thorlabs.TLBP2.Interop.bp2_calculations[],System.UInt16[],Thorlabs.TLBP2.Interop.bp2_slit_data[],Thorlabs.TLBP2.Interop.bp2_calculations[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_power_factor(System.Double)">
             <summary>
-            This function calculates the knife edge data from the slit data.
+            Set the Power Correction Factor and stores the value in the eeprom of the device.
+            The service mode needs to be enabled to use this function.
             </summary>
-            <param name="Slit_Data">
-            A buffer of max 7500 entries with the intensites of the slit data. The base level is substracted from the intensities. Max intensity value is 32767.
-            </param>
-            <param name="Calculation_Results">
-            A buffer with the calculation result for each slit.
-            </param>
-            <param name="Slit_Indices">
-            This array contains the information if the knife edge is calculated for this slit. If this parameter is not used, all slits become the knife edge data. This parameter is useful to increase the performance by suppress the calculation on slits that are not of interest.
-            
-            
-            Example for the calculation on the last two slits:
-            slit_indices[0] = VI_FALSE;
-            slit_indices[1] = VI_FALSE;
-            slit_indices[2] = VI_TRUE;
-            slit_indices[3] = VI_TRUE;
-            </param>
-            <param name="Slit_Data_Knife_Edge">
-            Fills the data buffer of max 7500 entries with the intensites of the slit data. The base level is substracted from the intensities. Max intensity value is 32767.
-            </param>
-            <param name="Calculation_Results_Knife_Edge">
-            Fills the data buffer with the calculation result for each slit.
-            The parameter is optional. If the calculations are not needed, please use VI_NULL as value instead of the calculations buffer.
+            <param name="Power_Factor">
+            Set the Power Correction Factor.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Get the measurement data operation successful
+            VI_SUCCESS                Set power factor operation successful
             
             
             Vendor Specific Codes
@@ -2853,26 +3200,34 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_drum_elapsed_times(System.Int16[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_connected_devices(Thorlabs.TLBP2.Interop.bp2_device[],System.UInt32@)">
             <summary>
-            This function reads out the measured elapsed times between two impulses. 156 Impulses are measured for each drum rotation.
-            </summary>
-            <param name="Elapsed_Time_Buffer">
-            Array with the measurement of the elapsed times in ?sec between the 156 impulses per drum rotation.
+            Gets a list of connected devices.
+            If this function is called with the parameter "Device_List" as VI_NULL, the function just returns the Device_Count.
+            The Device_List has to be initialized with Device_Count elements.
             
-            The array has ELAPSED_TIME_COUNTS entries.
-            Size of the buffer: 156 Words = 312 Bytes. 
+            ViUInt32 deviceCount;
+            ViStatus err = TLBP2_get_connected_deviced(vi, VI_NULL, &amp;deviceCount);
             
-            To get the drum rotation frequency multiply the mean of the elapsed times with 156.25.
+            BP2_DEVICE* deviceList = (BP2_DEVICE*) malloc(sizeof(BP2_DEVICE)*deviceCount);
+            err = TLBP2_get_connected_deviced(vi, deviceList, &amp;deviceCount);
             
-            ( The encoder creates 2500 impulses. Every 16 impulses the elapsed time is measured =&gt; 156.25 measurements per drum roration).
+            ...
+            
+            free(deviceList);
+            </summary>
+            <param name="Device_List">
+            The initialized list of BP2_DEVICE is filled with the information of the connected devices. If the parameter is VI_NULL, the parameter will be ignored. The list has to be initialized with the number of elements that is given by the Device_Count parameter. Maximal BP2_MAX_DEVICE_COUNT (10) devices can be connected.
+            </param>
+            <param name="Device_Count">
+            Returns the number of connected devices.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS                Read of the elapsed times successful.
+            VI_SUCCESS            Connected devices query successful
             
             
             Vendor Specific Codes
@@ -2880,26 +3235,20 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.request_scan_data(System.Double@,System.Single@,System.Double[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_drum_speed(System.Double@)">
             <summary>
-            This function reads a new measurement from the device and stores the calculation results internally.
+            Gets the speed of the drum rotation per second.
             </summary>
-            <param name="Power">
-            Returns the power in mW of the drum segment with the ND filter.
-            </param>
-            <param name="Power_Window_Saturation">
-            Returns the saturation of the power window in percent.
-            If the parameter is not needed, use VI_NULL as value instead.
-            </param>
-            <param name="Power_Intensities">
-            Fills a buffer of minimum 2128 entries with the intensities from the power window. If the values are not needed please use the value VI_NULL instead of a buffer.
+            <param name="Drum_Speed">
+            Speed of the drum in rotation per second.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Request measurement successful
+            VI_SUCCESS                Speed query successful
+            
             
             
             Vendor Specific Codes
@@ -2907,26 +3256,29 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_scan_data_information(System.Byte,System.UInt16@,System.Single@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_drum_speed(System.Double)">
             <summary>
-            This function reads out the processed scan data. 
+            Sets the speed of the drum in rotations per seconds.
+            
+            To use the full slit length (9mm) for your measurements, adopt the sample count and frequency to the new scan rate.
+            
+            Set the freqencies with the function "set_samples_frequencies":
+            sample_frequency_kHz = (sample_count / 1000) * (get_drum_circum / 1000 / slit_length_mm) *drum_speed_Hz.
+            
+            sample_frequency_kHz = (7500 / 1000) * ((55800*PI) / sqrt(2.0) / 1000 / 9)*10
+            
+            For a sample count of 7500 and a scan rate of 10 Hz, the samples frequency is 1033 kHz.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit which should be analyzed.
-            To identify a slit, please use the function get_slit_parameter.
-            </param>
-            <param name="Sample_Count">
-            Number of samples which are taken for the slit during the scan.
-            </param>
-            <param name="Dark_Level">
-            Dark level intensity in digits.
+            <param name="Drum_Speed">
+            sets the speed of the drum in rotations per seconds.
+            Range of the speed: 0 to 20 U/sec.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Get the measurement data operation successful
+            VI_SUCCESS                Set speed operation successful
             
             
             Vendor Specific Codes
@@ -2934,26 +3286,20 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_sample_intensities(System.Byte,System.Double[],System.Double[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.add_drum_speed_offset(System.Single)">
             <summary>
-            This function reads out the processed scan data. 
+            Adds a speed to the current drum speed to correct the motor speed. Please call "Set Drum Speed" to see the effect. With "Clear Drum Offset" the offset can be resetted.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit which data is of interest.
-            To identify a slit, please use the function get_slit_parameter.
-            </param>
-            <param name="Sample_Intensities">
-            Fills the data buffer of max 7500 entries with the intensites of the slit data. The base level is substracted from the intensities. Max intensity value is 65535.
-            </param>
-            <param name="Sample_Positions">
-            Fills the data buffer of max 7500 entries with the positions of the slit data in ?m.
+            <param name="Drum_Speed_Offset">
+            corrects the speed of the drum in rotations per seconds.
+            Range of the correction speed: -3.0 to 3.0 U/sec.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Get the measurement data operation successful
+            VI_SUCCESS           Set correction speed operation successful.
             
             
             Vendor Specific Codes
@@ -2961,28 +3307,16 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_peak(System.Byte,System.UInt16@,System.Single@,System.Single@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.clear_drum_speed_offset">
             <summary>
-            This function reads out measured peak parameter.
+            Clears the drum speed offset. This function is useful if the dum speed has been changed.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit of which the peak interests.
-            </param>
-            <param name="Peak_Index">
-            Index of the peak in the data intensity buffer.
-            </param>
-            <param name="Peak_Position">
-            Position of the peak in ?m beginning from the first data in the intensity buffer.
-            </param>
-            <param name="Peak_Intensity">
-            Intensity of the peak in digits. The dark level is substracted.
-            </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Get peak parameter operation successful
+            VI_SUCCESS         Clear correction speed operation successful.
             
             
             Vendor Specific Codes
@@ -2990,25 +3324,24 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_centroid(System.Byte,System.UInt16@,System.Single@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_samples_count_range(System.UInt16@,System.UInt16@)">
             <summary>
-            This function reads out the centroid parameter.
+            Gets the range of sample counts the instrument supports.
+            The sample count depends on the drum speed and the sample frequency.
             </summary>
-            <param name="Slit_Index">
-            The index of the slit which should be analyzed for it's centroid.
-            </param>
-            <param name="Centroid_Index">
-            Index of the centroid in the intensity buffer.
+            <param name="Min_Sample_Count">
+            Lower bound of the sample count.
             </param>
-            <param name="Centroid_Position">
-            Position of the centroid in ?m beginning from the first data in the intensity buffer.
+            <param name="Max_Sample_Count">
+            Upper bound of the sample count.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS       Get the centroid parameter operation successful
+            VI_SUCCESS                Sample count range query successful
+            
             
             
             Vendor Specific Codes
@@ -3016,25 +3349,20 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_beam_width(System.Byte,System.Single@,System.Single@)">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_samples_counts(System.Int16[])">
             <summary>
-            This function reads out the beam with measured at the clip level.
+            Gets the current operating slit sample buffer.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit which should give the beam width.
-            </param>
-            <param name="Beam_Width_Clip">
-            Beam width in ?m measured at the clip level.
-            </param>
-            <param name="Sigma_Width">
-            The sigma width is calculated of all scan data of this slit.
+            <param name="Sample_Count_Buffer">
+            Buffer which contains the sample count for each slit.
+            Size of the buffer is BP2_MAX_SLIT_COUNT * 2 bytes = 8 bytes.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS         Get the beam width operation successful
+            VI_SUCCESS                Sample count buffer query successful
             
             
             Vendor Specific Codes
@@ -3042,31 +3370,23 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_slit_gaussian_fit(System.Byte,System.Single@,System.Single@,System.Single@,System.Double[])">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.set_slit_samples_counts(System.Int16[])">
             <summary>
-            This function reads out the gaussian parameter.
+            Sets the current operating sample count for each slit.
+            Setting the sample count may change the sample frequency.
+            
+            Remark: Using the function "Set Drum Speed Extended" will overwrite the manual set sample count.
             </summary>
-            <param name="Slit_Index">
-            Index of the slit which is analyzed for it's gaussian parameter.
-            </param>
-            <param name="Gaussian_Fit_Amplitude">
-            Intensity of the calculated gaussian fit curve. The intensity can be higher than the peak intensity of the beam.
-            </param>
-            <param name="Gaussian_Fit_Diameter">
-            Diameter of the gaussian curve.
-            </param>
-            <param name="Gaussian_Fit_Percentage">
-            Fit percentage of the gaussian curve to the scan data.
-            </param>
-            <param name="Gaussian_Fit_Intensities">
-            Array of maximal 7500 entries which contains the gaussian curve.
+            <param name="Sample_Count_Buffer">
+            Buffer which contains the sample count for each slit.
+            Size of the buffer is BP2_MAX_SLIT_COUNT * 2 bytes = 8 bytes.
             </param>
             <returns>
             Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
             
             Completition Codes
             ----------------------------------------------------------------
-            VI_SUCCESS       Get the gaussian parameter operation successful
+            VI_SUCCESS         Set sample count buffer operation successful.
             
             
             Vendor Specific Codes
@@ -3074,10 +3394,32 @@
             For error codes and descriptions see &lt;Error Message&gt;.
             </returns>
         </member>
-        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.Dispose">
+        <member name="M:Thorlabs.TLBP2.Interop.TLBP2.get_drum_elapsed_times(System.Int16[])">
             <summary>
-            Closes the instrument and releases all resources.
+            This function reads out the measured elapsed times between two impulses. 156 Impulses are measured for each drum rotation.
             </summary>
+            <param name="Elapsed_Time_Buffer">
+            Array with the measurement of the elapsed times in ?sec between the 156 impulses per drum rotation.
+            
+            The array has ELAPSED_TIME_COUNTS entries.
+            Size of the buffer: 156 Words = 312 Bytes. 
+            
+            To get the drum rotation frequency multiply the mean of the elapsed times with 156.25.
+            
+            ( The encoder creates 2500 impulses. Every 16 impulses the elapsed time is measured =&gt; 156.25 measurements per drum roration).
+            </param>
+            <returns>
+            Operational return status. Contains either a completion code or an error code. Instrument driver specific codes that may be returned in addition to the VISA error codes defined in VPP-4.3 and vendor specific codes, are as follows.
+            
+            Completition Codes
+            ----------------------------------------------------------------
+            VI_SUCCESS                Read of the elapsed times successful.
+            
+            
+            Vendor Specific Codes
+            ----------------------------------------------------------------
+            For error codes and descriptions see &lt;Error Message&gt;.
+            </returns>
         </member>
         <member name="T:Thorlabs.TLBP2.Interop.TLBP2BaseLineModes">
             <summary>
@@ -3116,6 +3458,37 @@
             The new scan is added to the averaged scans
             </summary>
         </member>
+        <member name="T:Thorlabs.TLBP2.Interop.TLBP2PositionPresets">
+            <summary>
+            Modes for the reference Position
+            Used for the function set_reference_position
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.TLBP2PositionPresets.Bp2ReferencePositionPresetSensorCenter">
+            <summary>
+            reference position is the center of the sensor
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.TLBP2PositionPresets.Bp2ReferencePositionPresetRoiCenter">
+            <summary>
+            reference position is the center of the ROI
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.TLBP2PositionPresets.Bp2ReferencePositionPresetPeakPosition">
+            <summary>
+            Reference position is the peak postion. The peak position in the calculation results will be (0,0) and the centroid relative to the peak position
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.TLBP2PositionPresets.Bp2ReferencePositionPresetCentroidPosition">
+            <summary>
+            Reference position is the centroid postion. The centroid position in the calculation results will be (0,0) and the peak relative to the centroid position
+            </summary>
+        </member>
+        <member name="F:Thorlabs.TLBP2.Interop.TLBP2PositionPresets.Bp2ReferencePositionPresetUserPosition">
+            <summary>
+            The reference position is set by the user in µm
+            </summary>
+        </member>
         <member name="T:Thorlabs.TLBP2.Interop.BP2_ResourceManager">
             <summary>
             This class let the VISA Runtime search for connected devices
diff --git a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/obj/Debug/Thorlabs.BP2_CSharpDemo.csproj.FileListAbsolute.txt b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/obj/Debug/Thorlabs.BP2_CSharpDemo.csproj.FileListAbsolute.txt
index e43c143..2ca939b 100644
--- a/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/obj/Debug/Thorlabs.BP2_CSharpDemo.csproj.FileListAbsolute.txt	
+++ b/C sharp/Thorlabs BP209 Beam Profiler 2D Output/Thorlabs.BP2_CSharpDemo/obj/Debug/Thorlabs.BP2_CSharpDemo.csproj.FileListAbsolute.txt	
@@ -2,13 +2,55 @@ C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Prof
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.exe
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.pdb
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.AssemblyReference.cache
-C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.SuggestedBindingRedirects.cache
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.Form1.resources
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.Properties.Resources.resources
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.GenerateResource.cache
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.CoreCompileInputs.cache
-C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.CopyComplete
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.exe
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.pdb
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.TLBP2_64.Interop.dll
 C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.TLBP2_64.Interop.xml
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.exe.config
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.F50C70AC.Up2Date
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.exe.config
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.exe
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.pdb
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.TLBP2_64.Interop.dll
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.TLBP2_64.Interop.xml
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.AssemblyReference.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.exe.config
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.Form1.resources
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.Properties.Resources.resources
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.GenerateResource.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.CoreCompileInputs.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.F50C70AC.Up2Date
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.exe
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\1. SW [Cases and Study]\BP2 2D重构 提高帧率\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.pdb
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.exe.config
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.exe
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.pdb
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.TLBP2_64.Interop.dll
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.TLBP2_64.Interop.xml
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.AssemblyReference.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.exe.config
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.Form1.resources
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.Properties.Resources.resources
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.GenerateResource.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.CoreCompileInputs.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.F50C70AC.Up2Date
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.exe
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\4. SW Project\BP209 Beam Profile c sharp high FPS\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.pdb
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.exe.config
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.exe
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.BP2_CSharpDemo.pdb
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.TLBP2_64.Interop.dll
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\bin\Debug\Thorlabs.TLBP2_64.Interop.xml
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.AssemblyReference.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.exe.config
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.Form1.resources
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.Properties.Resources.resources
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.GenerateResource.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.csproj.CoreCompileInputs.cache
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.F50C70AC.Up2Date
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.exe
+C:\Users\zizhang\OneDrive - THORLABS Inc\Documents\GitHub\Light_Analysis_Examples\C sharp\Thorlabs BP209 Beam Profiler 2D Output\Thorlabs.BP2_CSharpDemo\obj\Debug\Thorlabs.BP2_CSharpDemo.pdb
diff --git a/C++/BP209 2D Output/BP209.vcxproj b/C++/BP209 2D Output/BP209.vcxproj
index 126ec6b..7afec8b 100644
--- a/C++/BP209 2D Output/BP209.vcxproj	
+++ b/C++/BP209 2D Output/BP209.vcxproj	
@@ -18,6 +18,9 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="BP209_2D_output.cpp" />
+  </ItemGroup>
   <PropertyGroup Label="Globals">
     <VCProjectVersion>16.0</VCProjectVersion>
     <Keyword>Win32Proj</Keyword>
@@ -71,8 +74,8 @@
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <IncludePath>$(IncludePath)</IncludePath>
-    <LibraryPath>$(LibraryPath)</LibraryPath>
+    <IncludePath>C:\OpenCV\opencv\build\include;$(IncludePath)</IncludePath>
+    <LibraryPath>C:\OpenCV\opencv\build\x64\vc16\lib;$(LibraryPath)</LibraryPath>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
@@ -111,13 +114,13 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>C:\Program Files\IVI Foundation\VISA\Win64\include</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>C:\Program Files\IVI Foundation\VISA\Win64\include;C:\Program Files (x86)\IVI Foundation\VISA\WinNT\Include</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalLibraryDirectories>C:\Program Files\IVI Foundation\VISA\Win64\Lib_x64\msc;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <AdditionalDependencies>TLBP2_64.lib;opencv_world490d.lib;opencv_world490.lib;$(CoreLibraryDependencies);%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>TLBP2_64.lib;opencv_world4120.lib;opencv_world4120d.lib;$(CoreLibraryDependencies);%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -136,9 +139,6 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="BP209.cpp" />
-  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
diff --git a/C++/BP209 2D Output/BP209.vcxproj.filters b/C++/BP209 2D Output/BP209.vcxproj.filters
index 43f7321..3fc79cc 100644
--- a/C++/BP209 2D Output/BP209.vcxproj.filters	
+++ b/C++/BP209 2D Output/BP209.vcxproj.filters	
@@ -15,7 +15,7 @@
     </Filter>
   </ItemGroup>
   <ItemGroup>
-    <ClCompile Include="BP209.cpp">
+    <ClCompile Include="BP209_2D_output.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
   </ItemGroup>
diff --git a/C++/BP209 2D Output/BP209_2D_output.cpp b/C++/BP209 2D Output/BP209_2D_output.cpp
index 7f52170..c53c740 100644
--- a/C++/BP209 2D Output/BP209_2D_output.cpp	
+++ b/C++/BP209 2D Output/BP209_2D_output.cpp	
@@ -1,7 +1,8 @@
-//Example Date of Creation(YYYY - MM - DD) 2024 - 04 - 24
-//Example Date of Last Modification on Github 2024 - 04 - 24
+//Example Date of Creation(YYYY - MM - DD) 2024 - 04 - 24
+//Example Date of Last Modification on Github 2026 - 01 - 29
 //Version of C++ used for Testing and IDE: C++ 14, Visual Studio 2022
-//Version of the Thorlabs SDK used : Beam version 9.1.5787.560
+//Version of OpenCV: OpenCV 4.12.0
+//Version of the Thorlabs SDK used : Beam version 9.3
 //Example Description: The sample code shows how to control a BP209 beam profiler in C++. 
 //In the example the available beam profilers are found, a connection is established, several parameters are set, 
 //several output values are displayed and a 2D image is shown.
@@ -18,7 +19,7 @@ using namespace cv;
 // forward declaration
 void print_error_msg(ViStatus err);
 void Beam_Profile_Reconstruction();
-ViSession m_instrumentHandle;
+ViSession m_instrumentHandle = 0;
 
 //set the measured laser wavelengh unit: nm
 double wavelength = 633; 
@@ -55,50 +56,74 @@ int main(int argc, char* argv)
 		return 0;
 	}
 
+	ViChar modelName[256];
+	ViChar serialNo[256];
+	ViChar manufacturer[256];
+	ViBoolean isAvailable;
+	res = TLBP2_getRsrcInfo(0, 0, modelName, serialNo, manufacturer, &isAvailable);
+
 	// connect with the first device
 	res = TLBP2_init(resStr[0].resourceString, VI_TRUE, VI_TRUE, &m_instrumentHandle);
-	if ((res & _VI_ERROR) > 0)
+	if (res != VI_SUCCESS)
 	{
 		print_error_msg(res);
 		return 0;
 	}
-	char serialNo[128];
-	res = TLBP2_get_serial_number(m_instrumentHandle, serialNo);
-	printf("%s is connected. \n", serialNo);
+	
+	if (isAvailable)
+	{
+		printf("%s (SN: %s) is connected. \n", modelName, serialNo);
+	}
+	else
+	{
+		printf("%s (SN: %s) is not available.\n", modelName, serialNo);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
+		return 0;
+	}
+	
 
 	// release the buffer for the resource strings
 	delete[] resStr;
 	
 	//set auto gain
 	res = TLBP2_set_auto_gain(m_instrumentHandle, VI_TRUE);
-	if ((res & _VI_ERROR) > 0)
+	if (res != VI_SUCCESS)
 	{
 		print_error_msg(res);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
 		return 0;
 	}
 
 	//set bandwidth
 	ViReal64 bw_buffer[4] = { 125,125,125,125 };
 	res = TLBP2_set_bandwidths(m_instrumentHandle, bw_buffer);
-	if ((res & _VI_ERROR) > 0)
+	if (res != VI_SUCCESS)
 	{
 		print_error_msg(res);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
 		return 0;
 	}
 	
 	//set wavelength
 	res = TLBP2_set_wavelength(m_instrumentHandle, wavelength);
-	if ((res & _VI_ERROR) > 0)
+	if (res != VI_SUCCESS)
 	{
 		print_error_msg(res);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
 		return 0;
 	}
 
 	//set power factor
 	res = TLBP2_set_user_power_factor(m_instrumentHandle, powerCorrectionFactor);
-	if ((res & _VI_ERROR) > 0)
+	if (res != VI_SUCCESS)
 	{
 		print_error_msg(res);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
 		return 0;
 	}
 
@@ -113,22 +138,26 @@ int main(int argc, char* argv)
 		res = TLBP2_set_scanning_method(m_instrumentHandle, 1, scanningMethod);
 		res = TLBP2_set_scanning_method(m_instrumentHandle, 2, scanningMethod);
 		res = TLBP2_set_scanning_method(m_instrumentHandle, 3, scanningMethod);
-		if ((res & _VI_ERROR) > 0)
+		if (res != VI_SUCCESS)
 		{
 			print_error_msg(res);
+			// release the device
+			TLBP2_close(m_instrumentHandle);
 			return 0;
 		}
 	}
 	else
 	{
-		printf("Invalid Input! The scanning method is set to slit scanning mode.\n");
+		printf("Invalid Input! The scanning method is set to slit scanning method.\n");
 		res = TLBP2_set_scanning_method(m_instrumentHandle, 0, 0);
 		res = TLBP2_set_scanning_method(m_instrumentHandle, 1, 0);
 		res = TLBP2_set_scanning_method(m_instrumentHandle, 2, 0);
 		res = TLBP2_set_scanning_method(m_instrumentHandle, 3, 0);
-		if ((res & _VI_ERROR) > 0)
+		if (res != VI_SUCCESS)
 		{
 			print_error_msg(res);
+			// release the device
+			TLBP2_close(m_instrumentHandle);
 			return 0;
 		}
 	}
@@ -140,25 +169,47 @@ int main(int argc, char* argv)
 		res = TLBP2_set_drum_speed_ex(m_instrumentHandle, 10, &sampleCount, &resolution);
 	else //knife edge mode
 		res = TLBP2_set_drum_speed_ex(m_instrumentHandle, 2, &sampleCount, &resolution);
-	if ((res & _VI_ERROR) > 0)
+	if (res != VI_SUCCESS)
 	{
 		print_error_msg(res);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
 		return 0;
 	}
 
+	//set calculation area to auto rectangle, and set the clip level to 1%
+	res = TLBP2_set_calculation_area(m_instrumentHandle, 0, VI_TRUE, 0.01f, 0.0f, 0.0f);
+	res = TLBP2_set_calculation_area(m_instrumentHandle, 1, VI_TRUE, 0.01f, 0.0f, 0.0f);
+	res = TLBP2_set_calculation_area(m_instrumentHandle, 2, VI_TRUE, 0.01f, 0.0f, 0.0f);
+	res = TLBP2_set_calculation_area(m_instrumentHandle, 3, VI_TRUE, 0.01f, 0.0f, 0.0f);
+
 	//set position correction
 	res = TLBP2_set_position_correction(m_instrumentHandle, VI_TRUE);
-	if ((res & _VI_ERROR) > 0)
+	if (res != VI_SUCCESS)
 	{
 		print_error_msg(res);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
+		return 0;
+	}
+
+	//return all position coordinates from -4500 µm to 4500 µm and flip the x scans
+	res = TLBP2_setThorlabsBeamCompatibleCoordinateSystem(m_instrumentHandle, VI_TRUE);
+	if (res != VI_SUCCESS)
+	{
+		print_error_msg(res);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
 		return 0;
 	}
 
 	//set speed correction
 	res = TLBP2_set_speed_correction(m_instrumentHandle, VI_TRUE);
-	if ((res & _VI_ERROR) > 0)
+	if (res != VI_SUCCESS)
 	{
 		print_error_msg(res);
+		// release the device
+		TLBP2_close(m_instrumentHandle);
 		return 0;
 	}
 	
@@ -169,12 +220,10 @@ int main(int argc, char* argv)
 		res = TLBP2_get_device_status(m_instrumentHandle, &device_status);
 	}
 
-	static BP2_SLIT_DATA slit_data[4], slit_data_kinfe[4]; /// BP2_MAX_SLIT_COUNT = 4
-	static BP2_CALCULATIONS calculation_result[4], calculation_result_knife[4];
 	static ViReal64 power_intensities[7500];
 	static ViBoolean slit_indices[4] = { VI_TRUE, VI_TRUE, VI_TRUE, VI_TRUE};
 	ViReal64 power;
-	ViReal32 powerSaturation;
+	ViReal32 powerSaturation,centroidPositionX, centroidPositionY,gaussianDiameterX,gaussianDiameterY;
 	ViUInt8 gain[4];
 	ViUInt8 gainPower;
 
@@ -183,7 +232,7 @@ int main(int argc, char* argv)
 	printf("Adjusting Gain...\n");
 	for (int i = 0; i < 10; i++)
 	{
-		res = TLBP2_get_slit_scan_data(m_instrumentHandle, slit_data, calculation_result, &power, &powerSaturation, power_intensities);
+		res = TLBP2_request_scan_data(m_instrumentHandle, &power, &powerSaturation, power_intensities);
 		res = TLBP2_get_gains(m_instrumentHandle, gain, &gainPower);
 		printf("Gain:\n");
 		printf("  25um slit x: %d, 25um slit y: %d\n", gain[0],gain[1]);
@@ -195,19 +244,25 @@ int main(int argc, char* argv)
 	if (scanningMethod == 0)//slit scanning mode
 	{
 		//Get the slit scan data
-		res = TLBP2_get_slit_scan_data(m_instrumentHandle, slit_data, calculation_result, &power, &powerSaturation, power_intensities);
+		res = TLBP2_request_scan_data(m_instrumentHandle, &power, &powerSaturation, power_intensities);
 		if (res == VI_SUCCESS)
 		{
+			TLBP2_get_slit_centroid(m_instrumentHandle, 2, VI_NULL, &centroidPositionX);
+			TLBP2_get_slit_centroid(m_instrumentHandle, 3, VI_NULL, &centroidPositionY);
+			TLBP2_get_slit_gaussian_fit(m_instrumentHandle, 2, VI_NULL, &gaussianDiameterX, VI_NULL, VI_NULL);
+			TLBP2_get_slit_gaussian_fit(m_instrumentHandle, 3, VI_NULL, &gaussianDiameterY, VI_NULL, VI_NULL);
 			printf("Corrected Power value: %.2f mW\n", power);
-			printf("5um Slit X Centroid Position: %.2f\n", calculation_result[2].centroidPosition);
-			printf("5um Slit Y Centroid Position: %.2f\n", calculation_result[3].centroidPosition);
-			printf("5um Slit X Gaussian Fit Diameter: %.2f\n", calculation_result[2].gaussianFitDiameter);
-			printf("5um Slit Y Gaussian Fit Diameter: %.2f\n", calculation_result[3].gaussianFitDiameter);
+			printf("5um Slit X Centroid Position: %.2f\n", centroidPositionX);
+			printf("5um Slit Y Centroid Position: %.2f\n", centroidPositionY);
+			printf("5um Slit X Gaussian Fit Diameter: %.2f\n", gaussianDiameterX);
+			printf("5um Slit Y Gaussian Fit Diameter: %.2f\n", gaussianDiameterY);
 			Beam_Profile_Reconstruction();
 		}
 	}
 	else//knife edge mode
 	{
+		static BP2_SLIT_DATA slit_data[4], slit_data_kinfe[4]; /// BP2_MAX_SLIT_COUNT = 4
+		static BP2_CALCULATIONS calculation_result[4], calculation_result_knife[4];
 		//Calculate the knife edge data from the slit data.
 		res = TLBP2_get_slit_scan_data(m_instrumentHandle, slit_data, calculation_result, &power, &powerSaturation, power_intensities);
 		res = TLBP2_get_knife_edge_reconstruction(m_instrumentHandle, slit_data, calculation_result, slit_indices, slit_data_kinfe, calculation_result_knife);
@@ -220,7 +275,7 @@ int main(int argc, char* argv)
 			printf("25um Slit Y Gaussian Fit Diameter: %f\n", calculation_result_knife[1].gaussianFitDiameter);
 		}
 		else
-			printf("Fail to reconstruct the knife edge data\n");
+			printf("Fail to reconstrucion the knife edge data\n");
 	}
 
 	// release the device
@@ -241,8 +296,6 @@ void Beam_Profile_Reconstruction()
 	static ViReal64 gaussianFitIntensitiesY[7500];
 	ViReal32 gaussianFitPercentageX, gaussianFitPercentageY;
 
-	//Request the scan data
-	TLBP2_request_scan_data(m_instrumentHandle, VI_NULL, VI_NULL, VI_NULL);
 	//Get the intensities from the 5um X slit and the 5um Y slit 
 	res = TLBP2_get_sample_intensities(m_instrumentHandle, 2, sampleIntensitiesX, samplePositionsX);
 	res = TLBP2_get_sample_intensities(m_instrumentHandle, 3, sampleIntensitiesY, samplePositionsY);
@@ -314,10 +367,12 @@ void Beam_Profile_Reconstruction()
 			reconstructionImage.at<uchar>(col, row) = (uchar)(255 * intensityTemp[row][col] / intensityMax);
 		}
 	}
+
 	imshow("X Intensity", IntensityXImage);
 	imshow("X Gaussian Fit Intensity", GaussianXImage);
 	imshow("2D Reconstruction", reconstructionImage);
-	waitKey(0);
+	
+	waitKey(8000);
 }
 
 // prints the error message from an error code
diff --git a/Matlab/CCT Spectrometers/CCT_example.m b/Matlab/CCT Spectrometers/CCT_example.m
new file mode 100644
index 0000000..27b8e61
--- /dev/null
+++ b/Matlab/CCT Spectrometers/CCT_example.m	
@@ -0,0 +1,76 @@
+%% Header
+% Title: CCT_example.m
+% Created Date: 2025-12-10
+% Last modified date: 2025-12-10
+% Matlab Version:R2023a
+% Thorlabs DLL version:1.0.20.4045
+%% Notes: The example shows how to connect to a CCT spectrometer, set the exposure time and acquire a spectrum
+% Tested with CCT11
+%
+
+% Load the Compact Spectrometer SDK DLLs
+dll_path='C:\Program Files\Thorlabs\ThorSpectra';
+NET.addAssembly(fullfile(dll_path, 'Thorlabs.ManagedDevice.CompactSpectrographDriver.dll'));  
+NET.addAssembly(fullfile(dll_path, 'Thorlabs.ManagedDevice.dll'));  
+NET.addAssembly(fullfile(dll_path, 'Microsoft.Extensions.Logging.Abstractions.dll'));  
+NET.addAssembly('System.Runtime');
+
+import Thorlabs.ManagedDevice.CompactSpectrographDriver.Workflow.StartupHelperCompactSpectrometer.*;
+import Thorlabs.ManagedDevice.Trace.ExampleLogger.*;
+import Microsoft.Extensions.Logging.Abstractions.*;
+import Thorlabs.ManagedDevice.CompactSpectrographDriver.ICompactSpectrographDriver.*;
+
+logger = Thorlabs.ManagedDevice.Trace.ExampleLogger('ML',Microsoft.Extensions.Logging.LogLevel.Trace,1==1,'MatLab');
+startupHelper = Thorlabs.ManagedDevice.CompactSpectrographDriver.Workflow.StartupHelperCompactSpectrometer(logger);
+
+cts = System.Threading.CancellationTokenSource();
+cancellationToken = cts.Token;
+
+%find devices
+discoveredDevicestask=startupHelper.GetKnownDevicesAsync(cancellationToken);
+discoveredDevicestask.Wait();
+discoveredDevices=discoveredDevicestask.Result;
+
+for i=0:discoveredDevices.Count-1
+    disp("discovered devices:")
+    disp(discoveredDevices.Item(i));
+end
+
+%if spectrometers are found
+if(discoveredDevices.Count>0)
+
+    disp("connecting to first device ...")
+
+    Deviceid=discoveredDevices.Item(0);
+    
+    spectrometer=startupHelper.GetCompactSpectrographById(Deviceid);
+
+    %set exposure time
+    exposure=500; %exposure time in milliseconds
+    exposure_result=spectrometer.SetManualExposureAsync(exposure,cancellationToken).Result;
+    if exposure_result==1
+        disp(['exposure time is set to ',num2str(exposure),' ms']);
+    end
+   
+    %acquire spectrum
+    spectrumtask=spectrometer.AcquireSingleSpectrumAsync(cancellationToken);
+    spectrumtask.Wait();
+    spectrum=spectrumtask.Result;
+
+    %dispose startup helper
+    startupHelper.Dispose();
+
+    %plot spectrum
+    figure; plot(spectrum.Wavelength,spectrum.Intensity)
+    
+         
+else
+    disp("No CCT spectrometer connected")
+end
+        
+       
+   
+
+
+
+
diff --git a/Matlab/Powermeter/PowermeterAppExample.mlapp b/Matlab/Powermeter/PowermeterAppExample.mlapp
new file mode 100644
index 0000000..3d55b5e
Binary files /dev/null and b/Matlab/Powermeter/PowermeterAppExample.mlapp differ
diff --git a/Matlab/Powermeter/README.md b/Matlab/Powermeter/README.md
index 0371422..317e288 100644
--- a/Matlab/Powermeter/README.md
+++ b/Matlab/Powermeter/README.md
@@ -5,7 +5,7 @@ This example shows how to initialize Thorlabs Power Meters that utilize the TLPM
 
 The code uses the .NET DLL file for the power meters TLPMX_64.Interop.dll.
 
-### Prerequisites
-Make sure to have the latest install of Thorlabs OPM and make sure the file location on line 10 leads directly to the TLPMX dll.
+### Power Meter App
+This example shows how to use a power meter with a Matlab App.
 
 
diff --git a/Python/Thorlabs PMxxx Power Meters/SCPI/Readme.md b/Python/Thorlabs PMxxx Power Meters/SCPI/Readme.md
index f3297dc..7611e54 100644
--- a/Python/Thorlabs PMxxx Power Meters/SCPI/Readme.md	
+++ b/Python/Thorlabs PMxxx Power Meters/SCPI/Readme.md	
@@ -27,7 +27,7 @@ For closer details refer to [Readme](scopeMode). Available for PM6x, PM103, PM10
 Minimal template script ```PMxxx_SCPI_OpenAnyvisa.py``` to open a known instrument resource using anyvisa library.
 
 ### Search Anyvisa
-Minimal template script ```PMxxx_SCPI_SearchAnyvisa.py``` to run instrument search and open one of the devices found using anvisa library.
+Minimal template script ```PMxxx_SCPI_SearchAnyvisa.py``` to run instrument search and open one of the devices found using anyvisa library.
 
 ## SCPI Command documentation
 For most of the Thorlabs Powermeter there is a detail [SCPI command documentation](commandDocu) in .html file format available. 
@@ -52,9 +52,10 @@ python -m pip install anyvisa*.whl
 
 ### National Instruments :tm: Visa
 
-If you want to control the Power Meter on Linux, with pyvisa library or with SCPI commands within your CVI or LabView application, 
-you have to install National Instruments :tm: Visa Runtime (May be installed already if you installed NI LabView or NI CVI). 
-Once installed you must switch the driver for the Power Meter manually by using Thorlabs Driver Switcher or Windows 
+If you want to control the Power Meter with the pyvisa library and with SCPI commands, 
+you have to install National Instruments :tm: Visa Runtime (May be installed already if you installed NI LabView or NI CVI).
+This works also on many Linux systems.
+On Windows, you must then switch the driver for the Power Meter manually by using Thorlabs Driver Switcher or Windows 
 Device Manager (Experts only). Once the runtime is installed and driver has been switched you can install pyvisa python library
 via command. 
 
@@ -62,4 +63,63 @@ via command.
 python -m pip install pyvisa
 ```
 
-Note: pyvisa does communicate with Thorlabs Ethernet or Bluetooth LE device interfaces.
+Note: pyvisa does not communicate with Thorlabs Ethernet or Bluetooth LE device interfaces.
+
+### Raspberry Pi 4 
+On Raspberry Pi with ARM Linux, both TLVisa and NI Visa do not work. Another approach is using the Pyvisa-Py backend.
+We tested the following procedure on Raspberry Pi 4, Linux 13 (Trixie), PM100D3.
+```
+sudo apt update && sudo apt upgrade -y
+```
+Most Raspberry Pi OS versions come with Python pre-installed. Check with:
+```
+python3 --version
+```
+If Python is not already installed:
+```
+sudo apt install python3 python3-pip -y
+```
+If libusb is not installed:
+```
+sudo apt install libusb-1.0-0-dev
+```
+Install Pyvisa and Pyvisa-Py:
+```
+sudo apt install python3-pyvisa
+sudo apt install python3-pyvisa-py
+sudo apt install python3-usb
+sudo apt install zeroconf 
+```
+In order to get the permission to acces the power meter, create usbgroup and add your user:
+```
+sudo groupadd usbgroup 
+sudo usermod -aG usbgroup $USER
+```
+then set a udev rule, open the following file to edit:
+```
+sudo nano /etc/udev/rules.d/99-usbgroup.rules
+```
+(create directory and file if it does not exist)
+Insert the following line into the file
+```
+SUBSYSTEM=="usb", GROUP="usbgroup", MODE="0666"
+```
+(This is for all USB devices. You can also set more specific rules)
+Reload and reboot to activate the rules
+```
+sudo udevadm control --reload-rules
+sudo udevadm trigger
+sudo reboot
+```
+Plug in the powermeter and check with lsusb, if the device is present.
+Run in Python:
+```
+import pyvisa
+rm = pyvisa.ResourceManager('@py')
+print(rm.list_resources())
+inst = rm.open_resource('USB0::4883::32921::P000000064::0::INSTR')#substitute with the actual resource string that you get from the previous command
+print(inst.query('*IDN?'))
+print(inst.query('MEAS?'))
+```
+Also see the above ```PMxxx_SCPI_pyvisa.py```
+