PFI 0 Connector

PFI 0 is a 3.3 V LVTTL, bidirectional, general-purpose digital I/O signal.

The most common use of PFI 0 is as a trigger input or a marker/event output. However, because the PFI 0 I/O buffer is connected directly to the FPGA, you can program the PFI 0 functionality for custom applications using LabVIEW FPGA.

Refer to the PXIe-5645 Specifications document for information about acceptable characteristics for input and output signals for PFI 0.