ismcctv 0 Posted August 14, 2012 Im running 7 cameras on an 8 channel 12V DC 4.2 Amp Power supply; ( to the DVR ) all cameras are running on cat5 cable to Video Baluns. however 1 camera is giving me lots of problems, the length on this particular camera is 180 ft. it has 2 splices on the cable ( im running the orange pair for video & the green pair for Power ) i am getting a distorted image with lots of interference i can see the image but with lots of wavy lines. any recomendations as to what i am doing wrong? Share this post Link to post Share on other sites
Soundy 1 Posted August 15, 2012 What cameras are these? Share this post Link to post Share on other sites
vector18 1 Posted August 15, 2012 Try plugging the camera directly into the DVR so you know if it's a bad camera or an issue with the wire. If it's clear when you connect it to the DVR, than the camera is good. Than, cut your wire in half and put a balun on the wire and connect a small test monitor to the balun so you can trouble shoot the length of the noise in the image. Also, which baluns are you using and what length are they rated for? And lastly, make sure your getting proper voltage to the camera. A long length of wire should be more than 22 gauge cat 5. Why don't you try using the two greens for positive and the two browns for negative. Than the two blues for video plus and two oranges or video minus? Share this post Link to post Share on other sites
Soundy 1 Posted August 15, 2012 Try plugging the camera directly into the DVR so you know if it's a bad camera or an issue with the wire. If it's clear when you connect it to the DVR, than the camera is good. You mean connect it directly to the monitor? Also, which baluns are you using and what length are they rated for? Even the cheapest passive baluns should be good for at least 500-800'. 180' should not be a distance issue. And lastly, make sure your getting proper voltage to the camera. A long length of wire should be more than 22 gauge cat 5. Why don't you try using the two greens for positive and the two browns for negative. Agree on doubling up, but the interference seen there doesn't look like lack of voltage - that would normally manifest as the camera dropping out entirely. Than the two blues for video plus and two oranges or video minus? WRONG. DO NOT use two pairs for one video feed. Search the forum - this comes up at least once a month, someone who's got image issues that turn out to be caused by using two pairs. Share this post Link to post Share on other sites
tomcctv 187 Posted August 15, 2012 camera is 180 ft. it has 2 splices on the cable hi cat5 is always at its best as a full lenth. your only talking 180ft im running the orange pair for video & the green pair for Power video pair is fine. but for power use green pair for - and brown pair for + this will give etter amps to your camera. and i would also look at putting this camera on its own power supply Video Baluns also are these true video baluns. lots of crap on ebay listed as baluns but are not. Share this post Link to post Share on other sites
tomcctv 187 Posted August 15, 2012 A long length of wire should be more than 22 gauge cat 5. 24 gauge is standard in the industry if you order 22 gauge you will pay a premium price for a larger cable thats not needed Share this post Link to post Share on other sites
vector18 1 Posted August 15, 2012 My typo, I meant standard 24 gauge cat 5. More than likely the interference is not a power issue, but it would be a better idea to double up for power. You have extra wires anyway. I have never seen or heard of video issues if you double up for video? And, you can connect the camera directly to the monitor to make sure it is not the camera and THAN plug it directly into the dvr to make sure there are no transmission issues happening from the camera to the DVR. Basically using process of illumination is the name of the game for troubleshooting. Share this post Link to post Share on other sites
Soundy 1 Posted August 15, 2012 I have never seen or heard of video issues if you double up for video? There are several instances we've dealt with here in the forum of people using two pairs and having noise problems, and switching to a single pair cured it. Remember, the whole point of twisted pair is that the twists cause cancellation of induced noise in the "signal pair". If you go with two pairs, then your "signal pair" are no longer twisted in relation to each other. While this isn't inherently going to cause problems (it's functionally no different than using station wire or speaker wire or any other non-twisted wire, which I have done before), you lose that noise-rejection property... and you don't gain any advantage from it. Basically using process of illumination is the name of the game for troubleshooting. I think you meant "elimination" Share this post Link to post Share on other sites
vector18 1 Posted August 15, 2012 Oops, my bad! Lmao! Share this post Link to post Share on other sites
