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A quad is an accessory to your surveillance system that splits a video monitor into 4 screens. Without a quad you would only be able view one camera at a time. A quad is only needed when you are using more than one camera and using a VCR or VISEC to record or when you are only monitoring and not recording at all.
The quads that we carry are high resolution real time quads that support up to 4 cameras. You also have the ability to playback and zoom in on recorded video. There are other products out there that can split a screen more than four ways. However, video quality worsens the more ways you split a screen. A quad is not needed when using a Digital Video Recorder to record because DVRs have a built-in quad. Below are two examples of how a quad works:
This is a surveillance system that is monitored only:
This is a surveillance system recording and monitoring:
 4 Channel Color or Black & White Quad
• QD-104 Black/White 4 Channel Quad
• QD-904R Color 4 Channel Quad
Features include:
- Full duplex allows transfer of recording and playback video at the same time.
- 2x2 zoom
- 60 frames per second
- Real time clock
- Title generator
- On-screen display
- No boarder for full quad display
- 2H adaptive comb filters for Y/C separation
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