Events >> Counter Output Event >> Pulse >> Polarity

NI-DAQmx C Reference Help

Edition Date: January 2019

Part Number: 370471AM-01

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Data Type: int32
Description: Specifies the polarity of the pulses at the output terminal of the counter when Output Behavior is DAQmx_Val_Pulse. NI-DAQmx ignores this property if Output Behavior is DAQmx_Val_Toggle.


Valid values

DAQmx_Val_ActiveHigh 10095 High state is the active state.
DAQmx_Val_ActiveLow 10096 Low state is the active state.



You can get/set/reset this property using:

  DAQmxGetExportedCtrOutEventPulsePolarity

  DAQmxSetExportedCtrOutEventPulsePolarity

  DAQmxResetExportedCtrOutEventPulsePolarity

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