NI PXI-5404 RTSI/PXI Trigger Lines

NI Signal Generator

NI PXI-5404
RTSI/PXI Trigger Lines


The NI PXI-5404 allows for a variety of signals to be routed to, and from, the PXI trigger (RTSI) lines.

As a source, these lines can be sent to the PFI 0 connector and used to trigger other devices in the system. You can also route RTSI lines to the REF OUT connector and use them to provide a clock to other devices. Additionally, any of these lines can be routed to other RTSI lines.

The following figure shows all the routes for RTSI lines.

As a sink, RTSI lines can receive the following:

  • Start trigger
  • Divided-down, onboard clock (20 MHz by default)
  • Software trigger
  • REF IN
  • PXI 10
  • PXI Star
  • PFI 0
  • CLOCK
  • Other RTSI lines

The following figure describes all the possible routes with the RTSI lines at the sink of the route.

Note  RTSI lines may not receive signals of frequencies higher than 20 MHz. When the divided-down, onboard clock (BOARD CLOCK/N) is routed to these lines, N should be ≥ 3. N is 3 by default.