Appendix E - Vertical Interval Sync (Vis); Overview; Enabling Vertical Interval Sync - AMX Modula Instruction Manual

Appendix E – Vertical Interval Sync (VIS)
Applicability Notice
This appendix pertains to the Modula Vertical Interval Sync (VIS) expansion board, FG1034-325.

Overview

A VIS board gives the Modula complete vertical interval synchronization switching capability. Each
Modula enclosure is built to hold one VIS board; we recommend installing the VIS board in the
expansion slot immediately to the left of the CPU/Control board.
The VIS board must be attached to an external sync source generating one of the following signal types:
If 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. When a VIS board is installed in each enclosure that contains video boards, one master sync
signal can be used to synchronize all video signals for the system.
Each Modula enclosure that was ordered with sync will have the VIS board already installed. In an
enclosure without the board, vertical interval sync can be enabled by installing a VIS board in an
expansion slot and updating the system's configuration file with XNConnect.

Enabling Vertical Interval Sync

Important: Adding or replacing boards should only be done by personnel trained to handle ESD
sensitive parts and assemblies.
Overview
If a VIS Board is added to an existing system
If the system is ordered with a VIS board
Modula Instruction Manual
Blackburst generator
NTSC composite video
Composite sync type of synchronization
If necessary, set the termination load jumper J1 (see page 178)
Install the board in an expansion slot
Attach the cable(s)
Optional – Verify that the system recognizes the VIS board
Required – Enable the VIS board using XNConnect
Verify the J1 jumper setting is correct (see page 178); if necessary, set the jumper (you will
need to remove and reinstall the board.
Attach the cable(s)
Update the system's configuration file with XNConnect
Appendix E – Vertical Interval Sync (VIS)
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