NI PXI-5404 Trigger Sources

NI Signal Generator

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NI PXI-5404
Trigger Sources


By default, the NI PXI-5404 starts immediately, after initiating a generation in software, unless a trigger is selected. When you use the Start trigger option, you can software select from one of the following sources:

  • PXI trigger bus (RTSI) line
  • PFI 0 (front panel connector)
  • PXI Star
  • Software trigger

The following figure shows the trigger sources for the NI 5404.

Waveform Generation Trigger Sources

If you need to automatically trigger the waveform generation, use software to generate the triggers. You need a rising TTL edge for external triggering.

For external triggering, apply a rising-edge TTL signal to the PFI 0 input. This signal should remain de-asserted (logic low) until after the software has initialized the waveform generation.

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