You can acquire data from multiple DAQmx channels in one DAQmx task using either NI Measurement & Automation Explorer (NI MAX) or LabVIEW. Both of these methods are described in more detail below.
If you want to add multiple channels to the same task but have different configuration settings for each channel, you can add additional DAQmx Create Channel VIs to the reference task for each channel(s) with a different configuration setting. For further help with NI-DAQmx features, please refer to LabVIEW Context Help, invoked by pressing <Ctrl-H> or <Ctrl-?>.
Easily Synchronize and Trigger NI-DAQmx with Channel Expansion
Selecting More Than One NI-DAQmx Channel in LabVIEW NXG
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