Product Short Description
Product Brief Introduction
Unidirectional multi-mode fiber analog video receiver unit designed to reconstruct analog composite video signals transmitted over optical fiber cables; paired exclusively with matching ComNet FVT110M transmitter for lossless CCTV camera video transmission, supporting NTSC and PAL analog video broadcast standards.
Description
Technical Specifications
- Video Signal Standard Support: NTSC 525-line, PAL 625-line composite analog video
- Video Sampling Resolution: 10-bit digital conversion precision
- Optical Fiber Interface: ST multi-mode fiber connector, 62.5/125 μm multi-mode fiber
- Max Transmission Distance: 2 km over standard multi-mode optical cable
- Optical Wavelength Operating Band: 1310 nm receive wavelength
- Video Bandwidth: 10 Hz to 10 MHz flat response
- Differential Gain Distortion: ≤ 1.5%
- Differential Phase Distortion: ≤ 1.0°
- Output Video Impedance: 75 Ω BNC terminated analog video output
- Supply Input Voltage: 12 V DC regulated industrial power supply
- Power Consumption Full Load: 2.4 W maximum
- Operating Temperature Range: -40 °C to +75 °C
- Enclosure Protection Rating: IP30 metal industrial chassis
Functional Features
- Automatic optical signal loss fault detection with front panel LED status indicator
- Built-in video signal reconstruction filter eliminating fiber transmission noise artifacts
- 75 Ω matched BNC analog video output for direct connection to NVR, monitor or matrix switcher
- Compact DIN rail mountable industrial form factor
- Overvoltage and reverse DC power polarity input protection circuit
- Passive optical power detection without external monitoring hardware
Material Composition
- Outer Chassis: Cold rolled steel sheet with black powder anti-corrosion coating
- Optical Receptor Module: InGaAs PIN photodiode optical receiver chip
- Circuit Board: FR4 high-stability PCB with gold plated signal traces
- Fiber Connector Housing: Nickel-plated brass ST connector body
- Status LED Window: Transparent polycarbonate impact resistant plastic
Structural Characteristics
- Compact horizontal rectangular single-unit chassis for cabinet rack density optimization
- Separate side panel ports: ST fiber optical port, BNC video output port, DC power terminal block
- Integrated DIN rail clip mounted on chassis bottom surface for 35 mm standard rail installation
- Front panel LED array: Power OK, Optical Link OK, Video Signal Active three dedicated indicators
Working Principle
Incoming modulated light signal from multi-mode fiber cable strikes the internal PIN photodiode optical receiver, converting variable light intensity into proportional analog electrical signal. Onboard signal conditioning circuitry filters optical transmission noise, reconstructs original composite video waveform, and outputs standardized 75 Ω analog video signal via BNC connector. Integrated signal detection circuit monitors received optical power level and activates fault indicator LED if fiber link signal drops below minimum threshold value.
Advantage Highlights
- Extended wide temperature range supporting outdoor unheated control cabinet deployment
- Low differential gain and phase distortion delivering broadcast-grade analog video fidelity
- Galvanic full electrical isolation between camera field side and control room eliminating ground loop interference
- Immunity to electromagnetic interference from power lines, VFD drives and radio frequency equipment
- Plug-and-play pairing with FVT110M transmitter without manual signal calibration
Applicable Industries
Industrial site CCTV surveillance, highway traffic monitoring systems, port container yard video networks, power substation security camera transmission, manufacturing factory process monitoring cameras, railway station analog video infrastructure
Installation Requirements
- Mount unit horizontally on standard 35 mm DIN rail within closed electrical cabinet
- Torque DC power terminal block screws to 0.8 N·m; avoid over-tightening terminal hardware
- Clean ST fiber connector end face with fiber lint-free wipe before cable insertion
- Maintain minimum 50 mm clearance above chassis for passive heat dissipation
- Terminate BNC video output cable with properly crimped 75 Ω coaxial connector
Usage Precautions
- Do not connect single-mode fiber cables to ST multi-mode optical port; optical signal loss will break video transmission
- Prevent physical scratch damage to PIN photodiode window inside optical port
- Supply regulated 12 V DC power only; unfiltered AC-DC unregulated adapters introduce video noise
- Replace optical receiver unit immediately if link fault LED remains illuminated with verified functional fiber cable
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