NI-SCOPE Get Wfm Coefficients Function Returns Incorrect Values

Updated Dec 20, 2022

Reported In

Hardware

  • PXIe-5172
  • PXIe-5122

Issue Details

Why is the niScope Get Wfm Coefficients.vi (poly)  passing incorrect values for Get Scaling Coefficients when using a PXIe FPGA Reconfigurable Oscilloscope?

For example, this VI is passing values set for the vertical range using Scope Configure Analog Channel.vi  earlier in the code, instead of the coefficient values.
 

Solution

If you are using a PXIe FPGA Reconfigurable Oscilloscope, then you must first use either the niScope Initialize.vi or the niScope Initialize With Options.vi in your LabVIEW code before using the NiScope Get Wfm Coefficients.vi to ensure you get the correct values, as shown in the picture below.

image.png
 

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