Sync (Video Sync) - Red Epic Epic-M Operation Manual

SYNC (VIDEO SYNC)

A 4-pin LEMO connector supports shutter synchronization input, GPI, timecode and genlock signals.
The shutter Sync Input signal acts as an immediate response hardware trigger to commence a scan. This
is useful for motion control and other applications where the camera is driven by a master timing device.
When using SYNC as the camera shutter timing reference, fine shutter start time timing (SHUTTER
PHASE) is disabled, make any timing adjustments at the external SYNC generator itself.
Alternatively, this input pin may be used as a GPI (General Purpose Input) trigger, whose function is
programmed in the USER KEYS menu. Default is Record Start / Stop.
A SMPTE timecode input signal provides a frame accurate time stamp for each frame of recorded video.
A Video Genlock input signal may be used as a vertical interval reference signal for applications that
require precise synchronization between cameras, such as 3D and live broadcasts. When using
GENLOCK as the camera shutter timing reference, fine shutter start time timing (SHUTTER PHASE) may
be adjusted.
Figure 22: View into camera SYNC (Video Sync) Interface connector
PIN
1
2
3
4
NOTE: The Shutter Sync / GPI Trigger uses a Schmitt trigger operating at 3.3V. Both edges of the
input signal can be used as a trigger event.
For example, when GPI trigger is used as a Record Start / Stop.
•
Start Record:
136 136
Mating Connector: FGG.00.304.CLAD27Z
SIGNAL
GROUND
SS/GPI
TIMECODE
GENLOCK
Ground - 3.3V Transition
©2011 RED.COM INC.
DESCRIPTION
Common Ground
Shutter Sync / GPI Trigger Input
SMPTE unbalanced timecode Input
RS170A Tri-Level Sync Input
Version 1.6.46
NOVEMBER 17, 2011