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 ...

The use of Unshielded Twisted Pair (UTP) in CCTV systems is increasing, as is an interest in identifying common pitfalls or causes of poor video quality after installation. An ideal UTP CCTV ...

In other words, a ground loop develops because each ground is tied to a different earth potential, which allows current to flow between the grounds by way of the process loop, as shown in Fig. 1.

Common problem 1: Ground loops Ground loops are the number-one cause of unusual audio noise and weird video, simply because it’s so darned easy to create.

So in my car I think i have a ground loop problem, but im not positive. Its sort of a cyclical noise, so its quiet, then buzzes, quiet, then buzzes, etc. Its not terribly bad, I really dont notice ...

The actual catalog number shown on mine is 270-054A. It solved a ground loop problem when recording direct from a telephone by way of another Radio Shack device, 43-1237A and a Griffin iMic.

My problem seems to be high wattage power amps that are run at 100% tend to exhibit ground loop hum at my home, i.e., powered monitors.

Electrical outlets that have different ground points, and cable television or satellite reception gear that is grounded in such a manner as to produce an electrical potential between multiple ...