The figure below shows the available GX1120 connectors:

GX1120 Front Connectors Panel
The following are the output connector signals for the GX1210 board:
Pin# |
Signal |
1 |
Channel 2 External Trigger input |
2 |
Ground |
3 |
Channel 2 Marker Out |
4 |
Ground |
5 |
No connected |
6 |
Channel 1 External Trigger input |
7 |
No connected |
8 |
Channel 1 Marker Out |
9 |
Ground |
10 |
Channel 2 Modulation input |
11 |
Ground |
12 |
Reference Clock out |
13 |
Reference Clock input |
14 |
Ground |
15 |
Channel 1 Modulation input |
GX1120 Trigger / Marker / Modulation Connector