The American Fibertek RR-20 is the rack card receiver component of the 20 series which transmits two channels of high-quality video on two multimode optical fibers. This systems is designed to be completely transparent to all camera and monitor manufacturers. Products ordered with automatic gain control require no field adjustments at installation or additional maintenance thereafter. Diagnostic indicators provide a quick visual indication of system status. Equipment also available with manual gain control option. The 20 series are ordered as rack cards and are mounted in the American Fibertek Card Cages: SR-20/2 or SR-20R/1.