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    The TRIG connector is the software-controlled trigger connection for routing PXI Express triggers to or from the backplane trigger bus.

    The following figure shows the TRIG connector location on the NI PXIe-8133. The following table lists the trigger connector signals.
    Figure 1. TRIG Connector Location and Pinout
    Table 1. TRIG Connector Signals
    Pin Signal Name Signal Description
    1 TRIG Trigger
    2 (Shield) GND Ground