Hello,
I have an application that pulls in analog inputs via the following hardware:
NI cRIO 9030
NI 9220 AI module (SAR timed)
2x NI 9244 AI modules (Delta-sig timed)
I am using NI's cRIO Wfm VIs and templates to do the acquisition and I can get it to work in Finite mode, but not in Continuous acquisition mode.
The NI cRIO Waveform Reference Library is here.
I think my issue might have something to do with the different timing methods of the modules, but I've tried multiple different ways of acquiring and it doesn't fix the problem.
The cRIO Waveform FPGA template says to split the SAR and Delta-Sig acquisition nodes, but this article here says to combine them.
I'm not sure what to try next. The FIFO doesn't overflow, the FPGA just starts looping slow, which causes the code the throw an underflow error. If I increase the sample rate and increase the #samples to match, the problem occurs earlier. With static settings, I tracked how many loops it took to occur at one point and it happens around the same time, but not the exact same number of loops.
See attached code snippets to see how I've configured it.
Thank you,
