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cctv help


pigeonbasher1
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It is a pattern called "colour bars" used a bit like a test card picture.  Some video routers/switches/devices etc. automatically insert it on lines without a valid 'real' image. 

The purpose is to show that the monitor and path between the device inserting the colour bars pattern is operating, and clearly show a fault rather than (say) a dark picture.

Could be caused by a missing 'real' video signal, which could be camera unplugged/no power/failed/video lead disconnected/damaged.

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