Grass Valley Apex v.2.0 - Manual (Page 90)

92 APEX — Installation and Service Manual
Section 3 — Installation
Single Video Reference – Redundant Operation
In the arrangement shown in Figure 39 , the same video reference is brought
to the Primary and Secondary Matrix boards. If the Primary board fails the
system will switch automatically to the Secondary board.
The system will detect that the same reference signal is connected to both
inputs and automatically combine Sync Bus 0 with Sync Bus 2. When con-
figuring the output boards, only
Bus 0 is a valid selection.
Figure 39. Single Video Reference – Redundant Operation
House Video Reference (used for AES sync)
AES REF A
VID REF A
AES REF B
VID REF B
All input and output
board(s) on
Video Ref
These connections require
Matrix board B to be present
0 Binary ID used for assigning
reference to input and output board
with XPT board DIP switch
To next Apex chassis (or terminate)