NI 5402/5406
Trigger Sources
Trigger sources are software selectable. You can use any of the external input triggers as follow:
- SYNC OUT/PFI 0 or PFI 1 on the BNC front panel connectors
- RTSI<0..7> (PCI) lines or PXI_Trig<0..7> lines and PXI_Star on the PXI trigger bus on the backplane
The following figure shows the possible trigger sources for the signal generator.
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§Refer to Exporting Signals for more information routing signals.
External triggers are only recognized on the rising edge of the trigger. All triggers are ignored until niFgen Initiate Generation VI or the niFgen_InitiateGeneration function is called.
The default trigger source for NI-FGEN is Immediate, which causes an automatic Start trigger pulse to be generated internally as soon as hardware is ready to generate signals after generation has been initiated. You can configure the trigger source with the niFgen Configure Trigger (poly) VI or the niFgen_ConfigureTriggerSource function. Refer to the niFgen Send Software Edge Trigger VI or the niFgen_SendSoftwareEdgeTrigger function for more information about programmatically triggering the device.
Refer to the module specifications for the minimum Start trigger pulse width required for operation.