Counter Input >> Position >> Angular Encoder >> Pulses Per Revolution

NI-DAQmx C Properties

Counter Input >> Position >> Angular Encoder >> Pulses Per Revolution

Data Type: uInt32
Description: Specifies the number of pulses the encoder generates per revolution. This value is the number of pulses on either signal A or signal B, not the total number of pulses on both signal A and signal B.

You can get/set/reset this property using:
  DAQmxGetCIAngEncoderPulsesPerRev
  DAQmxSetCIAngEncoderPulsesPerRev
  DAQmxResetCIAngEncoderPulsesPerRev