How Switchers, Quads, Multiplexers Work
A Switcher will sequence between multiple cameras to allow viewing and or recording of each camera full screen one at time. Dwell time is adjustable. Playback of video tape will be of cameras sequencing.
A Digital Quad will allow viewing and or recording of up to 4 cameras on one screen at one time. Playback of recorded tape will be in 4 quadrant format.
A Multiplexer will rapidly sequence full screen through each camera for recording purposes and allow single camera or multiple-camera screen formats while viewing (duplex) or playback (simplex and duplex). Video tape of any one camera can be played back in sequence.
Choose the right type for your application:
Allows automatic sequencing of selected cameras to a video monitor or VCR. Variable dwell time settings are available. Call any camera instantly for continuous observation. A Homing Sequential Switcher has one single output and can be set to display and/or record a single camera or all cameras in sequence. A Bridging Sequential Switcher has two outputs and can display a single camera on one monitor and sequencing cameras on a second monitor simultaneously. An Alarming Switcher will allow for the input of a dry contact closure for a motion detector, etc. When an alarm is detected on a specific channel it will stop sequencing and lock on that camera for single camera recording. Playback from a VCR will be in single camera or sequencing mode as it was recorded.
View up to four cameras simultaneously, sequence through all or selected cameras, or select one camera for full-screen display while recording to VCR in quad format. Not all quads allow for viewing of "live" video.
Allows you to display "live" single camera full screen pictures while full screen recording all cameras. You may also play back any single camera in sequence or all connected cameras for detailed event analysis. Playback images can be displayed in a variety of multiple-picture screen formats. All recorded images must be played back through the multiplexer.
A simplex multiplexer is very useful where there are multiple locations with multiplexers, or where there is no on-site monitoring. An example might be a chain of stores where the tapes are brought back to a central office for review or an unmanned recording station with no on-site monitoring.
Allows you to display "live" single camera full screen pictures or a variety of multiple-picture screen formats while full screen recording all cameras. Allows you to record "live" cameras on one VCR while simultaneously processing and replaying video from a second VCR. Playback images can be displayed in a variety of multiple-picture screen formats or single camera formats while simultaneously recording. Multiple-picture screen formats will not be "live". All recorded images must be played back through the multiplexer.
A duplex multiplexer is useful for applications where monitoring is a key part of the system function and where video tapes need to be viewed regularly.