When used with a video cassette recorder, the Multiplexer will provide an historical record of all the cameras connected to the system.

At the same time displaying pictures either in a multiscreen format or as full screen images. These pictures can then be reviewed in multiscreen mode to quickly search through a complete videotape to find an incident.

The operator can then display that picture as a full screen view, for the best possible detail. This duplex version is recommended for use on a manned site when the multiscreen display allows an operator to view the whole site on one monitor.

To keep the unit as simple to operate as possible many of the processes are automated. Some multiplexers expect the operator to reconfigure the multiplexer whenever he changes the recording speed of the video recorder, the Multiplexer automatically follows the speed of the video recorder to keep the Multiplexer in perfect step with the video recorder.

Many companies like to display pictures from their cameras in public areas as a deterrent, this can mean that covert cameras are also displayed, the Multiplexer provides the ability to record all of the cameras connected to the system but also to hide any nominated cameras from public display.