Data Translation MACH Series, User Manual

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Chapter 2
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Digital I/O Signals
For line-scan operations, the DT3152-LS frame grabber board
provides four digital input lines and four digital output lines. For
area-scan operations, the DT3152-LS frame grabber board provides
four digital output lines only.
Pins 14 to 11 on connector J1 provide digital outputs 0 to 3. Pins 10
and 9 on connector J1 connector provide digital inputs 0 and 1. Pins
10 and 9 of connector J2 connector provide digital inputs 2 and 3.
These digital I/O signals are simple register-driven, TTL-level signals
that you can use for any purpose, such as controlling or actuating
external devices. A bit value of 0 identifies a low TTL level; a bit value
of 1 identifies a high TTL level.
Use software to write the digital output values or read the digital
input values.
Note: You cannot read the value of digital input lines in area-scan
mode.