What is a Multiplexer?

A Simplex Multiplexer lets the user to view a single Camera "live" screen, while other full screen displays are being recorded. User can review the video tapes, camera by camera. In order to review the video tapes, the playback must be done through the Multiplexer. In order to review the video tapes on a Simplex Multiplexer, the recording mode must be quitted. You can not play and record simultaneously on a single recorder.
A Duplex Multiplexer let the user to view single camera "live" screen, while other full screen displays are being recorded. On a Duplex Multiplexer, user can review the video tapes and record simultaneously, one recorder does the playback and the second recorder does the recording.
SIMPLEX & DUPLEX MULTIPLEXER