RCA Video Isolator Anti-Interference Filter

Physical dimensions: 63 mm (L) × 36 mm (W) × 21 mm (H). Housing material: flame-retardant PVC shell (VNB-GliB00MF / VNB-Gli00MF series). Electrical interface: wired male-to-female RCA connectors, 75 Ω impedance matched at both ports. Video standard support: PAL, NTSC, SECAM. Format compliance: CCIR 601 4:2:2. Sampling rate: 13.5 MHz. Bandwidth: 10–20 MHz. Key signal metrics: insertion loss < 0.01 dB; chromatic aberration < 1%; phase difference < 2°; gain difference < 2%. Pulse shaping employs multi-element horizontal and vertical limiting for accurate transient response. Mounting: two 3 mm diameter holes spaced 73 mm centre-to-centre. Operating environment: −25°C to +70°C ambient; up to 90% relative humidity (non-condensing). Designed to solve one of the most persistent problems in analog video distribution: ground loop interference. Occurs when interconnected equipment (e.g., CCTV camera + DVR + monitor) reference different earth potentials — causing current flow through coaxial shields and resulting in visible degradation: horizontal lines, rolling bars, image tearing, snow-like static or complete loss of sync. Particularly prevalent in UK installations involving mixed power sources (mains, PoE injectors, vehicle batteries) and long cable runs (>100 m), where induced voltages may exceed safe thresholds and risk equipment damage. This isolator provides passive, maintenance-free protection by decoupling signal grounds without altering video content — supporting both baseband composite video and audio-capable RCA paths. Used extensively in domestic surveillance, automotive rear-view systems, broadcast OB vans, retail loss-prevention suites and education AV labs — wherever legacy RCA infrastructure must coexist with modern grounding practices or variable site earthing quality.