Done11

Problem solved. $15.00 ground loop isolator installed at the monitor.

To save time and headaches just buy a ground loop isolator. You can get one from amazon. I got one from DSC technology. It was 15.00. had I got one in the beginning it would have saved me two weeks of trouble shooting.

I want to thank all you guys for replying with suggestions. After trouble shooting this problem for two weeks and trying all the suggestions. I decided to try a ground loop isolator. Even though some people said they don't work and some say they do. Well.......it WORKED!!!!! This little $15.00 (US) part solved the problem.

I was thinking I would run rg6 but since you suggested cat5 I will run cat5 also to see if either one would solve my problem. Thanks for the reply.

All three buildings on this side of the plant are metal. All the lights are mounted to metal poles and the poles are mounted directly to the metal building. I'm guessing this is causing all the problems. I'm ready to just run a catv and put a computer in the guard tower and have them use the CMS software to see the cameras. I really would like to solve this problem but I'm running out if options.

The first thing i did was add a booster. I put it at the DVR then at the monitor and in the middle of the run. Didn't work. I even ran a test cable through the warehouse instead of on the roof so the cable wasn't touching the building or near the lights. That didn't work. The picture is great during the day or night as long as the lights are not turned on.

The breaker for the lights is on a single phase sub panel. There is a three phase main. They are both in the same building as the wire run.

If your referring to the mains that supply power to the electrical panel for the building it's not close to it at all.

At two points in the run the RG59 passes over the emt that supplies the lights. Then it runs about a foot away from the emt down the wall.

The monitor is located 700" away from the DVR in a guard tower. I'm using the BNC output of the DVR. I ran RG59. Part of the run is on top of a metal building with two large halogen lights mounted on top lighting up the parking lot. When the lights are off the picture is perfect but when the lights are turned on the picture starts to shake in a wavy pattern then scrolls downward then goes back to perfect it repeats this sequence till the lights are turned off. At two points in the run I had to use a BNC to BNC connector. Not sure if it's RFI or electrical induction, etc??? Anyone have suggestions on how to fix this problem?

The monitor is located 700" away from the DVR in a guard tower. I'm using the BNC output of the DVR. I ran RG59. Part of the run is on top of a metal building with two large halogen lights mounted on top lighting up the parking lot. When the lights are off the picture is perfect but when the lights are turned on the picture starts to shake in a wavy pattern then scrolls downward then goes back to perfect it repeats this sequence till the lights are turned off. At two points in the run I had to use a BNC to BNC connector. Not sure if it's RFI or electrical induction, etc??? Anyone have suggestions on how to fix this problem?

Found out that the security guards turn on two large flood lights at night. THIS is what's causing the problem with the picture at the guard tower. I ran a test cable along the parking lot thinking the way I ran the original cable (RG59) was getting some kind of induction or electrical interference. That didn't work. Anyone ran into this kind of problem? Any suggestions would be highly appreciated.

It's generated by the monitor. The picture (9 ch grid) is perfect at the monitor (VGA) that's at the DVR day and night. I upgraded the DVR and relocated it to the main office. I ran all new rg59 from the existing cameras. The cameras are good quality. 700tvl and 24led. I also added 1.5 amps to each camera.

Ok, I added a BNC to VGA converter and now the picture is the continually but it scrolls half way down then back up to normal. It repeats this thought out the night. Going to add a video booster Monday. I hope this works. Been fooling around with this for three weeks now. Gotta get paid. Any input would be appreciated.

Yes it does say video loss for a few seconds then the picture comes back on. Went there during the day today and the picture was clear and stable. I added a BNC to VGA converter. I'm using the VGA input on the tv now. Going to see how that works tonight. Thanks for your replies.