Multiple channels in and out using DAQ assistant

[monkaren]

Hello,

I'm trying to create a simple oscilloscope that reads 16 analog inputs, filters them and then displays them on different graphs. My problem is that I always see the same input (no matter the pin) in all the graphs. Any thoughts about this?

First I tried using multiple DAQ assistants, but then I read in the forum best practice was to use the same task for all the inputs and then the figure shown to split the signals.

Thanks!

[RobAfton]

I think you're better off using DAQmx calls than the Express vi's.

Here's a look at basic DAQmx Task creating.

[Bob_Schor]

I agree.  I wrote (for one of my colleages) a multi-page document called "The Dreaded DAQ Assistant" whose bottom line was Never Use the DAQ Assistant (and don't use Dynamic Wires, either!).  NI wrote a wonderful paper on DAQmx -- search for "Learn 10 Functions in NI-DAQmx" on the Web and you'll find it.

Bob Schor

[monkaren]

Thank you guys for your replies! I'm going to read on those!

Best regards.