NI PXI-5404
Generating a Clock Signal (Square Wave)

1. Initialize an NI-FGEN session for the appropriate device (niFgen Initialize VI or niFgen_init function).
2. Set the appropriate standard function properties or attributes for the desired generation.
   
   
   

   Properties	Attribute	Value
   Waveform	NIFGEN_ATTR_FUNC_WAVEFORM	NIFGEN_VAL_WFM_SQUARE
   Frequency	NIFGEN_ATTR_FUNC_FREQUENCY	the desired frequency (Hz), 0 MHz to 105 MHz
   Amplitude	NIFGEN_ATTR_FUNC_AMPLITUDE	the desired amplitude (Vpk-pk into a high impedance load), 1.8 V, 3.3 V, or 5 V
   Duty Cycle High	NIFGEN_ATTR_FUNC_DUTY_CYCLE_HIGH	The desired duty cycle (%), legal values vary by the frequency

   
   
   
3. Initiate the generation (niFgen_InitiateGeneration). The square wave should be generated at CLOCK out.
4. If you want to stop the generation, do so by disabling the output (niFgen Output Enable VI or niFgen_ConfigureOutputEnabled function) and/or aborting the generation (niFgen Abort Generation VI or niFgen_AbortGeneration function).
5. Close the NI-FGEN session (niFgen Close VI or niFgen_close function).

The following table lists the NI-FGEN clock signal (square wave) example for various ADEs.