LabVIEW control Interface 54645d, please help!

Hi, I can't get the two signals of track or to at least get channel 2 on my labview interface signal, I get two signal on the physical oscilloscope traces and when I try and run the labview interface it only shows channel 1. I was able to save data in an excel to CSV file and get a signal (channel 1), but now I am trying to get a second signal or if not possible, to achieve at least a signal of channel 2 on another window, please help, spent time searching for solution, but came to no solution and don't know how I can get this signal displayed. If anyone knows how I can get this works or if they can test on a physical oscilloscope to meet, I would really appreciate it. Please I am again asking for help. Thank you.

Working w / Hardware: HP/Agilent 54645D Mixed signal Oscilloscope, Interface module of 54657A module attached to the oscilloscope, connected to a PCI-GPIB, GPIB cable using the function/arbitrary function generator HP 33120 A signal generator.

A screenshot of the material (oscilloscope/function generator and front panel Interface) and my current VI is attached. Please if you can help me get a second signal of channel 2, I'll APRECIATE it thanks.

John

Hi John,.

Since you are using a scope and an IVI driver, you will not be able to use the reading VI waveform to acquire two signals. However, you can use the initiate and extract the screws to acquire the signals of the two channels. You will first use the VI launch referring to both channels, and then, you follow this command with the Fetch VI for each channel individually. This article in the knowledge base I linked below gives a more thorough description of the reason why you cannot use the VI of waveform of reading for both channels:

Using a Driver of Instrument specific scope IVI to acquire multiple waveforms at the same time:http://digital.ni.com/public.nsf/allkb/9FC2291D4CF6851A862567B30050AB12

I hope that this helps explain the behavior you're seeing.

Best regards

Anna

Tags: NI Hardware

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