wick1144retired
Member
- Location
- Southern Maryland
I am upgrading a DVR at a 5 story office building. Cameras are located and powered locally at each floor and video cable is run to DVR. All cameras were working with old DVR. I installed a new DVR, HDTVI compatible. Now only those cameras that are in close physical proximity show video. So I checked voltage between camera coax cable shielding coming from the camera and ground @ DVR. DC 0 volts, AC 32-33 volts on only the cameras that are not now working. 4 of the cameras that are close to the DVR are working. I don't want to run power cable from DVR location to each cameras location if possible. Is this a ground loop issue or other voltage issue?