Jensen Transformers ISO-MAX VBH-3RR is a three independent channels 75O video hum ground loop isolator/eliminator (Very high ground isolation: 120 dB CMMR type at 60 Hz) for composite (baseband) video that is used to prevent 60 cycle `hum bars' even where ground voltage differences are very large such as in surveillance camera systems and video systems in night clubs, video walls, broadcast stations, and industrial plants. A heavy duty unit with built-in Common-Mode Chokes. VBH-3RR unique design delivers an exceptionally linear bandwidth from 10 Hz to 10 MHz with virtually zero insertion loss. Plug and play easy to use, the VBH-3RR features a flanged, electrically isolated housing that is easily mounted on standard 19" rack rails or inside a NEMA enclosure. One simply connects the passive device in series and problems such as ground loops are eliminated, reducing noise by as much as 120 dB. The VBH-3RR is a tremendous time saver as it eliminates excessive trouble-shooting when hunting down sporadic problems. Once installed, it often eliminates future service calls that can be attributed to non-related voltage fluctuations caused by cycling refrigeration systems, power transformers or nearby industrial facilities that may be causing power disruptions. The Jensen ISO-MAX VBH-3RR delivers remarkable video quality without noise, contamination or artifact. All three inputs and outputs feature completely isolated and have gold-plated RCA/IHF connectors. The VBH-3RR is housed in a sturdy metal enclosure, measuring 6.75" W x 6" D x 1.75" H., including the flanges and weighing a hefty heavy duty 4 lbs. The flanges have mounting holes, which are handy for permanent installations. Exceptional performance, will not deteriorate picture quality. Precise impedance matching ensures minimal reflection. 56dB of CMRR type at 60Hz minimizes ground loops. Broadcast quality RGB video. Greater than 1 VRMS 60Hz common-mode level handling