Hello,
I hope you are well during these times.
We have a PXIe-6363 and a NI 9234. We fabricate devices and input different waveforms and measure the output. The device itself functions as a form of a resistor. We used to use NI 9234 and a function generator to measure our device performance. Since we got the PXIe-6363, we thought we could use the PXIe as both input and output. We started using PXIe because we wish to simultaneously measure 32 outputs, which was impossible using NI 9234. We made a program to generate the waveform we required and used it to feed in the input while measuring the output simultaneously.
Now here is the problem; when we use the NI 9234, we instantly read behavior changes. But with the new program and device, we have a problem; the input looks exactly like the output. When we use the PXIe as the input source and NI 9234 as the recorder, everything is fine, but it fails when we do both with PXIe. I believe the issue arises from the internal coupling, but I can't be sure, and I don't really know how to overcome this issue.
Basically, the program is the same, and as long as I use NI 9234 as the AI port and PXIe as the AO, everything goes well, but the moment I switch to PXIe for both AI and AO, everything goes south. By the way, the sampling rate and clock are the same during all measurements.
I appreciate any constructive comments.
Regards
