Monroe Electronics R159A - Manual (Page 5)

5
General Description
Monroe Model R159A Sync Sensor Video Backup Switch monitors composite baseband video
sync from a single channel, for 3 separate channels. It outputs each baseband video signal and
its accompanying composite audio, to two separate output connectors.
When baseband video loses sync or its level decreases by more than 3 dBmV, the R159A
switches to a secondary baseband input with composite audio. When the original signal
returns, it switches back to the original signal pair.
At the same time, the switch change activates a remote indicator solid-state switch on the back
panel, for status monitoring systems, as well as an LED on the front panel, for local
troubleshooting.
Each switch section can be overridden by an external contact closure to ground.