Video multiplexers allow for multiple cameras to be viewed and simultaneously recorded on a single VCR. Most manufacturers produce a 4, 9, or 16 camera capacities in both monochrome and color capabilities.
Multiplexers can be either simplex or duplex. Simplex multiplexers allow for one mode of operation, either recording or playback. Therefore, when reviewing tapes the system is not recording.
Duplex multiplexers allow for two modes of operations and require two VCR, one for recording and one for playback. With a duplex multiplexer you can review tapes while continuously recording.
Pelco has introduced a full line of video multiplexers that offer a lot of features not previously offered with other lines of multiplexers. Features such as VCR synchronization and activity detection.
