NI-DAQ™mx C Reference

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Product DocumentationNI-DAQ™mx C ReferenceCounter Input >> Frequency >> Input >> HysteresisCurrent page
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Counter Input >> Frequency >> Input >> Hysteresis

Data Type: float64
Description: Specifies a hysteresis level to apply to Threshold Level. When Starting Edge is rising, the source signal must first fall below Threshold Level minus the hysteresis before a rising edge is detected at Threshold Level. When Starting Edge is falling, the source signal must first rise above Threshold Level plus the hysteresis before a falling edge is detected at Threshold Level.

You can get/set/reset this property using:
  DAQmxGetCIFreqHyst
  DAQmxSetCIFreqHyst
  DAQmxResetCIFreqHyst

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