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Digital Filter Minimum Pulse Width for CO Arm Start Trigger on USB-6212

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Hi All, 

 

I'm trying to use the digital filter to overcome a noise problem that is causing "false" Arm Start Triggers on my counter output task, using DAQmxSetDigEdgeArmStartTrigDigFltrMinPulseWidth. Although I've successfully used this with a custom value (0.5ms) in the past on a different device (cDAQ), my USB-6212 is not really allowing me to use this property and giving a -200077 error that the value is not supported.

 

Strangely, I've actually gotten it to work by using the 6.425us preset value used for the counter input digital debounce filter, but I need a much larger pulse width for the noise I am experiencing, and the other preset values that I've found in the documentation of M and X series devices of 2.55ms and 2.54ms give me the same error. 


Any thoughts, explanations, workarounds would be tremendously helpful at this point.

 

Best regards, 


Andrew


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