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Chapter 3 I/0 Information
Trigger
The TRIG connector is the software-controlled trigger connection for routing PXI triggers to or
from the backplane trigger bus.
Figure 3-6 shows the TRIG connector location on the PXIe-8840. Table 3-8 lists and describes
the trigger connector signals.
Note Refer to PXI Express Trigger Connectivity in Chapter 2, Installation and
Configuration, for more information about the SMB trigger.
Figure 3-6. TRIG Connector Location and Pinout
Table 3-8. TRIG Connector Signals
Pin Signal Name Signal Description
1 TRIG Trigger
2 (Shield) GND Ground
NI PXIe-8840
Embedded Controller
1
2
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