Videotek TVM9100PKG Installation And Operation Handbook page 252

Figure B-3. LTC/GPI 26-pin, Female, D-sub Connector
Figure B-4. LTC/GPI Breakout Board
Table B-3. Pinouts for LTC/GPI Connector and LTC/GPI Breakout Board
Pinout Signal
1 GND
2 GPI input #4 (Select input D)
3 GPI input #3 (Select input C)
4 GPI input #2 (Select input B)
5 GPI input #1 (Select input A)
6 GPI input #7 (Select Preset 3)
7 GPI input #8 (Select Preset 4)
8 GPI input #9 (Select Preset 5)
9 GPI input #6 (Select Preset 2)
10 GPI input #5 (Select Preset 1)
11 GND
12 Reserved
13 GPI output #1
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Pinouts
Pinout
TVM Series Installation and Operation Handbook
Copyright © 2008, Harris Corporation
Signal
14 Return for GPI #1
15 GPI output #2
16 Return for GPI #2
17 Reserved
18 Reserved
19 Clock high in
20 Clock low in
21 Reserved
22 Reserved
23 Reserved
24 LTC high in
25 LTC ground
26 LTC low in