Frequency

Creates channel(s) that use a frequency-to-voltage converter.

Refer to the National Instruments NI-DAQmx C Reference Help file for detailed descriptions of these options, under NI-DAQmx C Functions > Channel Configuration/Creation > Create Analog Input Channels > DAQmxCreateA\FreqVoltageChan.

AnalogInParamFrequency

Hysteresis: Specifies the volts in a window below the threshold level.

Maximum Value: Indicates the maximum value you expect to measure.

Minimum Value: Indicates the minimum value you expect to measure.

Threshold Level: Indicates the voltage level at which to recognize waveform repetitions.