75 Ohm RCA Video Isolator Filter

Dimensions: 63 mm × 36 mm × 21 mm. Constructed with PVC shell for durability and electrical insulation. Input/output impedance: precisely matched at 75 ohms to prevent signal reflections in standard CCTV and consumer AV systems. Compatible with NTSC and SECAM video formats. Input level: 1 Vp-p, aligned with CCIR 601 4:2:2 digital component video standard. Bandwidth: 10–20 MHz — sufficient for full-resolution composite and S-video signals. Chromatic aberration: less than 1% across all test patterns. Phase difference: under 2 degrees; gain difference: under 2%. Insertion loss: below 0.01 dB — virtually transparent to the signal path. Mounting holes spaced 73 mm apart, with 3 mm diameter. Operating temperature: -25°C to +70°C. Humidity tolerance: up to 90% non-condensing. Interface: integrated RCA male and female connectors with fixed-length cable. Designed for single-channel unbalanced video signal isolation and suppression of common-mode interference. The device addresses ground loop interference — a frequent cause of horizontal lines, rolling bars, image tearing and snow noise — by electrically isolating input and output grounds using a precision-wound isolation transformer. This prevents circulating currents in coaxial shield layers and equipment chassis, particularly when connecting devices powered from different circuits or located far apart (>100 m). Its dual-stage design combines galvanic isolation with broadband filtering to reject both low-frequency hum and higher-frequency EMI. Commonly deployed in professional and domestic settings including security monitoring, car reversing systems, broadcast editing suites, karaoke venues, and commercial AV installations — wherever mismatched grounding causes visible artefacts but replacing cabling or rewiring is impractical or costly.