Specifications

RED DSMC OPERATION GUIDE

955-0020_V5.1, REV-A | 121

HD-SDI.

PIN SIGNAL DESCRIPTION

1 GROUND Common Ground

2 SS/GPI Shutter Sync/GPI Trigger Input

3 TIMECODE SMPTE unbalanced timecode Input

4 GENLOCK RS170A Tri-Level Sync Input

The Camera Brain’s Shutter Sync/GPI Trigger uses a 3.3 V Schmitt trigger (5 V tolerant). It is not a switch clo-

sure circuit. Therefore, it requires current supplied by the trigger source. Both edges of the input signal may

be used as a trigger.

For example, when GPI trigger is used for Record Start/Stop.

 Start Record: On Ground to 3.3 V transition

 During Record: Hold at 3.3 V

 Stop Record: On 3.3 V to Ground transition

 During Stop: Hold at Ground

TRIGGER BUTTON CIRCUIT

SYNC (Video Sync) Connector

Mating Connector: FGG.00.304.CLAD27Z