Multifunction DAQ

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NI 9219 Sample Rate


I've got a NI-9219 module with specs of 100 samples/sec/chnl, but I can sample at 1 million sampes per second no problem. Is that because I'm using a virtual module in MAX and not a physical module?

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Try reading the data as a waveform and then inspect the "dt" field.  I'll bet DAQmx is automatically coercing to the highest *supported* sample rate without throwing an error.  (Though perhaps there's a warning?).


It's a pretty common (but not universal!) behavior for DAQmx to coerce inputs to the nearest legal, supported value.



-Kevin P

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Yes - when using a simulated device, you won't get the same kind of errors related to timing constraints as you would with the physical device.

Nathan Murphy
Certified LabVIEW Architect
Hiring CLD/CLA in Southern California
DM for details
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