acquiring data simultaneously on two channels via NIDAQ board

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Wed, 06/05/2013 - 02:22 pm

Using a PCI-6221 Nidaq board i am sending and receiving waves through analog connections. Is it possible to have the analog out display get read as a wave(on one channel) and simultaneously have an oscilloscope-like display of the same data on another channel(by splitting the signal)?

I have tried this with the scan and fifo commands(Nidaqmx) but it does not allow me to scan once the 1st channel is "busy" acquiring.

Is there a way around this or am I reduced to connecting the analog out to a physical oscilloscope?

Thanks for your time.
I'm not really certain what you're trying to do here...

You can have multiple channels in a single analog input scanning task. You can wire an analog output to an analog input to monitor, for instance, a generated waveform.

You cannot have two separate analog input tasks running at the same time on a single DAQ device. For that you would need a second device.

John Weeks
WaveMetrics, Inc.
support@wavemetrics.com

June 5, 2013 at 03:12 pm - Permalink

My question was the second of the two. Thanks for the response. I'll have to get it to display via hardware.

June 5, 2013 at 10:32 pm - Permalink