NI PXI/PCI-5411/5431 RTSI/PXI Trigger Lines

NI Signal Generator

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NI PXI/PCI-5411/5431
RTSI/PXI Trigger Lines


NI PCI-5411/5431

The NI PCI-5411/5431 contains seven trigger lines and one RTSI clock line available over the RTSI bus to send and receive NI PCI-5411/5431-specific information to other devices that have RTSI connectors.

The following figure shows the RTSI trigger lines and routing of NI PCI-5411/5431 for signals to the RTSI switch.

For phase locking to other devices as a master, the NI PCI-5411 sends an onboard 20 MHz signal to the RTSI Osc line as a device clock signal. For locking to other devices as a slave, the NI PCI-5411 receives the RTSI Osc line as an RTSI clock signal.

Note  Phase locking multiple NI 5431 signal generators is not supported when generating video waveforms.

NI PXI-5411/5431

The NI PXI-5411/5431 can receive a hardware trigger from another device as an RTSI trigger signal on any of the RTSI/PXI trigger lines.

The following figure shows the PXI trigger lines and routing of NI PXI-5411/5431 signals to the RTSI switch.

You can also route NI PXI-5411/5431 signals as follows:

  • Route the marker generated during waveform generation in Arbitrary Waveform Generation mode to any of the RTSI/PXI bus trigger lines.
  • Route the Start trigger signal generated on the NI PXI-5411/5431 to other devices through any of the RTSI/PXI bus trigger lines.
  • Route the SYNC output generated on the NI PXI-5411/5431 to other devices through any of the RTSI/PXI bus trigger lines. You can use this signal to give other devices an accurate and fine frequency resolution clock.

For phase locking to other devices, the NI PXI-5411 receives the PXI backplane 10 MHz Osc as a Reference clock signal. All the NI PXI-5411 signal generators use this common signal as the Reference clock for phase locking.

The bi-directional device SYNC signal is used as a trigger signal to synchronize multiple devices only during a master/slave operation. For general-purpose triggering, you must use either a Start trigger for the outgoing trigger or a RTSI trigger for the incoming trigger.

Note  Phase locking multiple NI 5431 devices is not supported when generating video waveforms.
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