04-26-2021 02:46 PM - edited 04-26-2021 02:47 PM
Hi,
I am working with a cDAQ 9171 chassis and a NI 9775 DAQ.
I want to perform continuous data acquisition with a sampling rate of 25Hz. However, I get an error message displaying that the minimum sample clock rate is 76.2939 Hz.
Is it not possible to sample continuously below this rate?
Here is the error message:
--------------------------------
Requested value is not a supported value for this property. The property value may be invalid because it conflicts with another property.
Property: NationalInstruments.DAQmx.Timing.SampleClockRate
Requested Value: 25.0
Maximum Value: 20.0e6
Minimum Value: 76.2939
Task name: _unnamedTask<1>
Status code: -200077
------------------------------
Thanks in advance for your help!
Solved! Go to Solution.
04-26-2021 04:21 PM
It might be the case, you could work around by capturing at a constant rate and resample at the software level.
For example, capture at 100Hz, if you need to log only at 50Hz, log only every other sample from the DAQ.