RED and Start/Stop Triggers

To offer customers maximum flexibility, RED offers two different types of remote trigger (start/stop) protocols: Momentary Ground and Schmitt trigger. The cinema industry commonly uses the Momentary Ground protocol.

Here are the RED devices that use each trigger protocol:


  • DSMC2 Base Expander
  • EPIC camera
  • SCARLET camera

Momentary Ground

  • DSMC2 Jetpack-SDI Expander
  • DSMC2 Jetpack Expander
  • DSMC2 REDVOLT Expander
  • DSMC2 V-Lock I/O Expander
  • DSMC2 Production Module
  • RED RANGER camera

Related Support Articles:

RTMotion (Teradek RT) Focus System Start/Stop Configuration on DSMC2

Please contact RED Support with any questions.

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