FLIR X-Series User Manual page 40

Internal
External
Video
Internal
External
Software
IRIG Triggered
X-series User's Manual
Sync Sources
The frame sync is generated internally to run at the frequency
set by the user
The frame sync is generated externally through the Sync In
connect on the camera rear chassis.
The frame sync is generated from an external video source
connected to the Gen Lock In connector on the camera rear
chassis.
Trigger Sources
The trigger is generated internally to run at the frequency set by
the user (Hz).
The trigger is generated externally through the Trigger In
connector on the camera rear chassis. (3.3V TTL)
The trigger is generated via a software button (Trigger button)
Camera generates an internal trigger when the internal IRIG
5 – X-series Camera Controller
40