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Long story, short version. New 16 top line camera system. Monitors in office and apartment in seperate building. All components and wires are new. When running appliances or even turning light switches on and off, there's a direct effect on the security system. The monitors get distorted on 4 of the 16 cameras (although it can effect all 16 and the full screen when isolating single camera. Thr guy has tried filters and other gizmos but he can't isolate the problem. Any suggestions or checklists would be greatly appreciated. THANKS A BUNCH ! teraplanez@cox.net

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Chances are your installer used different power sources within your building to provide power to the cameras. If electric power is being supplied through multiple circuits (different breakers) this can cause sync problems and interference. The first thing I would try is to put all the cameras on the same power supply. A DC power supply is best if your cameras accept DC voltage. The second thing is to check how close all camera coaxial cables are running near high voltage lines (120/240 VAC). Eventhough coaxial cable is shielded you can induce voltage bleed over from electrical lines into your video, which will appear as interference lines on your monitor. Cables should be at least 2 feet away from electrical lines. If both wires run together parallel for more than 10 feet then you need to cross over the electrical line at a right angle every 10 feet. This will help eliminate interference.

Posted on Nov 23, 2009

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Posted on Jan 02, 2017

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