Analog Input >> General Properties >> Filter >> Analog Filter >> Lowpass >> Advanced >> Switched Capacitor >> External Clock Frequency

NI-DAQmx C Reference Help

Edition Date: January 2019

Part Number: 370471AM-01

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Data Type: float64
Description: Specifies the frequency of the external clock when you set Clock Source to DAQmx_Val_External. NI-DAQmx uses this frequency to set the pre- and post- filters on the SCXI-1141, SCXI-1142, and SCXI-1143. On those devices, NI-DAQmx determines the filter cutoff by using the equation f/(100*n), where f is the external frequency, and n is the external clock divisor. Refer to the SCXI-1141/1142/1143 User Manual for more information.


You can get/set/reset this property using:

  DAQmxGetAILowpassSwitchCapExtClkFreq

  DAQmxSetAILowpassSwitchCapExtClkFreq

  DAQmxResetAILowpassSwitchCapExtClkFreq

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