time synchronization for Daq acquisition using different channels from the same device

[lisque]

Do I need to worry about time synchronization for Daq acquisition using different channels from the same device? How do Daq acquire data? Do they acquire a chuck of data from one channel then acquire data in another channel? Or they do one data per channel? The input configuration I used is RSE.

Thanks.

[lxjzhang · Accepted solution]

Do you have a specific model DAQ device you are using? My experience with some NI multiple function DAQ is each channel acquires data independently (in parallel) and can automatically take care of timing. For example, it you stream the data/waveform to, say TDMS, the timing info is automatically included in the waveform of each channel.  

[crossrulz · Accepted solution]

If you put all of the channels into a single task, the DAQ takes care of the synchronization for you.  Most DAQs use a mux and do a round of all the channels in a sample period.

[lisque]

They do take care of timing by itself. I checked with input three 1000Hz squarewaves. Thanks so much for helping.

[lisque]

Thanks for helping. They do synchronization.