This article will discuss video ground loop problems in CCTV installations. The cause and how it effects picture quality with solutions to eliminate the problem.
Every CCTV technician knows that unforeseen problems can occur when they install cameras in a new location, and even swapping out one camera for another can cause a hidden problem to surface. When installing a CCTV camera in an elevator car to view the riders,
The GB-60 UTP Ground-Loop Blocker for Twisted Pair wire is an active device used with any Unshielded Twisted Pair video transmitter or passive "Balun" to eliminate Ground Loop Interference and picture quality problems in new and existing CCTV video installations.
The GB464 Ground-Loop Blocker is an active device used to eliminate Ground Loop Interference and picture quality problems in new and existing CCTV video installations. The unit is installed at the monitor site where the CCTV signals come together, or at any intermediate point where
The GB464-UTP Ground-Loop Blocker for Twisted Pair wire is an active device used in conjunction with any Unshielded Twisted Pair video transmitter or "Balun" to eliminate Ground Loop Interference and picture quality problems in new and existing twisted wire CCTV video installations.
The GB-1 Ground-Loop Blocker is an active amplifier used to eliminate Ground Loop Interference and picture quality problems in new and existing CCTV video installations. The unit is installed at the monitor site where the CCTV signals come together, or at any intermediate point in
The GB474PTZ Ground-Loop Blocker is an active device used to eliminate Ground Loop Interference and picture quality problems in new and existing CCTV video installations. This product will allow "Up the coax Remote Control Pan, Tilt, and Zoom" operation and will extend the range of
They look like a horizontal band or bar across the video monitor that slowly moves up the video screen. These bars can be barely noticeable, or can be so bad that the video monitor loses lock and breaks up the picture.
This graph illustrates the picture quality obtained when sending a CCTV picture through various lengths of RG59/U cable and the restoration of picture quality obtained by using the ACE472 at the monitor end of the system.
The annoying horizontal bars that occasionally show up in CCTV video monitors are the result of load unbalance in 60 cycle power distribution in the vicinity of a particular CCTV system. As such they may exist in one CCTV installation, but not in another essentially
