Appendix A - Enabling Vertical Interval Sync - AMX AutoPatch Epica-128 User Manual

Enabling Vertical Interval Sync
The Vertical Interval Sync (VI Sync) board provides complete vertical interval
synchronization switching capability for an Epica enclosure.
The VI Sync board uses an external master sync signal, such as station master,
blackburst, or composite video input. When all of the source devices are
genlocked to the same source, the master sync signal synchronizes the video
switching to occur during the vertical interval (pulse), eliminating vertical roll or
jitter on the monitor. The master sync signal also synchronizes all video signals
for systems with multiple enclosures whose VI Sync boards are linked.
The VI Sync board must be attached to an external sync source generating one of
the following signal types:
ä Blackburst generator
NTSC composite video
ä
ä Composite sync type of synchronization
Each Epica enclosure that was ordered with sync will have the VI Sync board
installed. In an enclosure without the board, vertical interval sync can be enabled
by installing a VI Sync board in an expansion slot and updating the system's
configuration file.
Epica-128 & Epica-256 Installation & Setup A-1