Connecting A Ttl-Compatible Output To An Auxiliary Input Signal - Matrox Indio Installation And Hardware Reference

Sensing
Circuit*
Matrox Indio input
Optional because the auxiliary input signals are optically isolated.
*
For proper
the auxiliary input signal.
Equivalent circuit only

Connecting a TTL-compatible output to an auxiliary input signal

Connect a TTL-compatible output to a Matrox Indio auxiliary input signal, as
shown below. Note that the return path pin is often labeled GND.
AUX IN _ +
AUX IN _ -
TTL -logic level detection, you must enable
Note that in this configuration, you must enable TTL input mode for proper
TTL-logic level detection. To enable this mode, you must install a jumper on
pins 3-4 of the auxiliary signal's input mode connector. For information, refer
to the Input and output mode connectors subsection of the Matrox Indio connectors
section, in Appendix B: Technical information.
Connecting to the auxiliary I/O interface
OUT
RTN
Device with a TTL -compatible output
TTL input mode for
47