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Chapter 3
Signal Connections
©
National Instruments Corporation
3-5
TRIG<3..0>
Triggers<3..0> are TTL I/O lines used to start or stop an acquisition or output
an acquisition status. You can program the triggers to be rising- or falling-edge
sensitive. You also can program the triggers to be programmatically asserted
or unasserted, which is similar in function to a digital I/O line, or to contain
specific pulse widths or internal status signals by using the onboard events.
CTRL<3..0>
±
Use the control lines on the NI 1410 to control camera features and timing
information, such as generating integration or shutter pulses. You can generate
either static or dynamic signals and either TTL or differential signals on these
lines.
DGND
DGND is a direct connection to digital GND on the NI 1410.
CHASSIS_GND
CHASSIS_GND is a direct connection to the computer’s chassis, which is
grounded through the power cord.
Table 3-1.
I/O Connector Signals (Continued)
Signal Name
Description