Grass Valley Turbo iDDR v.2.3 - Manual (Page 46)

46 Turbo iDDR User Guide
Chapter 2 Configuration: Turbo iDDR
NOTE: Some seamless video switchers contain frame lock circuitry that eliminates
the need to synchronize the iDDR. Refer to your video switcher documentation to
determine if you need to synchronize and time the iDDR.
The iDDR uses a composite analog video reference signal connected to the video
reference loop-through connector. The loop-thru must be terminated using a 75 ohm
terminator unless the signal is cabled (looped-through) to another device. A
synchronizing generator, or composite analog signal from a stable video source can
be used as a video reference signal.
Video Switcher
Display
System
Camera Feeds
Video Reference
Signal Generator
Recorded
Video
Saffire™
iDDR
Push Push
R1 P2 Ch 2 Ch 1 Ch 2 Ch 1 Ch 2
P2
OUTPUT HD/SD PLAYER P R P B CMPST/Y S- Video SDI LTC Out S/PDIF Composite S- Video VIDEO REFERENCE
P1 RS 422 R1 RS 422 P2
DVI-I
GPI I/O
Reference in/out
-OR-
Reference in/out
75 terminator