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Chapter 3 Signal Connections
NI PCI-1405 User Manual 3-2 ni.com
Signal Descriptions
Table 3-1 describes the signal connections on the NI 1405 connectors.
Table 3-1. I/O Connector Signals
Signal Name Description
VIDEO Composite Video—This signal allows you to make a referenced
single-ended (RSE) connection to the video channel.
TRIG External trigger—You can use this TTL I/O line to start an acquisition or
to control external events. You can program the triggers to be rising-
or falling-edge sensitive. You can also program the triggers to be
programmatically asserted or unasserted, similar to the function of a digital
I/O line, or to drive internal status signals by using the onboard events.