Video Hum Eliminators are designed to remove interference created by long cable runs, 60 cycle power demands, grounding noise and magnetic coupling. Normal voltage differences between system grounding points cause small AC power currents to flow through video cables. At power frequencies, a voltage drop of only 7mV peak can cause a visible hum bar. Ground loop current flows through the shield of coaxial video cable which produces a magnetic field in the core of the hum eliminator to create an inductor, or choke. The major advantage of a hum eliminator is high bandwidth. Low-frequency response extends to DC avoiding an effect called field-rate tilt, and a high frequency response of 100MHz or more make these units suitable for high definition and projection TV systems.
- Single or multi channel available
- Stand-alone or Rack mounted units
- Composite or RGB inputs
- 100 MHz minimum bandwidth
- BNC, RCA or S-video connectors
- Sturdy aluminum housing