Grass Valley Apex v.2.0 - Manual (Page 91)

APEX — Installation and Service Manual 93
Reference Connections
Dual References - Redundant Operation
In this arrangement shown in Figure 40 , the same video reference is
brought to the Primary and Secondary Matrix boards, and the same AES
reference is brought to both boards. If the Primary board fails the system
will switch automatically to the Secondary board.
The system will detect that the same reference signals are connected to both
boards and automatically combine Sync Bus 0 with Sync Bus 2 and Sync
Bus 1 with Sync bus 3. When configuring the output boards, only
Bus 0 and
Bus 1 are valid selections.
Figure 40. Dual References – Redundant Operation
House Video Reference (used for AES sync)
AES REF A
VID REF A
AES REF B
VID REF B
House AES Reference
Input and output
board(s) on
AES Ref
Input and output
board(s) on
Video Ref
These connections require
Matrix board B to be present
0 1 Binary ID used for assigning
reference to input and output board
with XPT board DIP switch
To next Apex chassis (or terminate)
To next Apex chassis