NI 5402/5406
SYNC OUT/PFI 0 and PFI 1 Connectors

SYNC OUT/PFI 0 and PFI 1 are bidirectional connectors.

As an input, SYNC OUT/PFI 0 and PFI 1 terminals can accept a trigger from an external source that can start or step through waveform generation. As an output, the SYNC OUT/PFI 0 and PFI 1 lines can route a signal out from the following sources:

• SYNC OUT
• Out Start trigger
• PLL Reference Clock source
• Sample Clock Out (with /K, where K is an integer used to divide the Sample clock)

Refer to Exporting Signals for more information about routing signals. Refer to the module specifications for information about acceptable input signal characteristics to connect to the SYNC OUT/PFI 0 and PFI 1 lines, as well as the output signal characteristics.

Notes NI-FGEN routes SYNC OUT to the SYNC OUT/PFI 0 connector by default. To use the SYNC OUT/PFI 0 to import or export any other signal, you must unroute SYNC OUT by using the niFgen Export Signal VI or the niFgen_ExportSignal function. If you route a signal to SYNC OUT/PFI 0 without first unrouting SYNC OUT, NI-FGEN returns error -89137 (Hex 0xBFFA6B8E) noting that the specified route could not be satisfied.

SYNC OUT/PFI 0 driver circuitry has been optimized to have lower jitter than PFI 1 for exporting the SYNC OUT Sample clock or the PLL Reference clock source.