Product Short Description
Product Brief Introduction
Complementary unidirectional analog video optical transmitter engineered to convert copper composite CCTV video signals into modulated light signals for multi-mode fiber cable transmission; matched operation partner to ComNet FVR110M receiver unit, compatible with all standard NTSC and PAL analog surveillance camera outputs.
Description
Technical Specifications
- Input Video Standard: NTSC, PAL composite analog video, 75 Ω BNC input impedance
- Video Sampling Resolution: 10-bit analog-to-digital conversion
- Optical Connector Type: ST multi-mode fiber port, 62.5/125 μm fiber compatibility
- Maximum Transmission Reach: 2 km multi-mode fiber cable
- Transmitter Optical Wavelength: 1310 nm laser diode emission band
- Video Passband Response: 10 Hz to 10 MHz linear flat bandwidth
- Differential Gain Distortion: ≤ 1.2%
- Differential Phase Distortion: ≤ 0.8°
- DC Input Operating Voltage: 12 V DC industrial regulated supply
- Maximum Full Load Power Draw: 2.1 W
- Operating Ambient Temperature: -40 °C to +75 °C
- Chassis Environmental Rating: IP30 sealed metal cabinet
Functional Features
- Constant laser power control circuit stabilizing optical output power over temperature variations
- Front panel LED indicators for power status and active analog video input signal
- Reverse DC power polarity protection and transient surge suppression circuit
- DIN rail integrated mounting base for electrical control cabinet installation
- Input signal buffering amplifier eliminating coaxial cable length attenuation distortion
Material Composition
- Enclosure Body: Cold rolled steel with matte black powder coating
- Optical Emission Core: 1310 nm InGaAs laser diode transmitter assembly
- Main Circuit Board: FR4 low-noise printed circuit board
- ST Fiber Connector Fitting: Nickel plated brass corrosion resistant housing
- Signal BNC Port: Zinc alloy shielded coaxial connector assembly
Structural Characteristics
- Uniform footprint matching FVR110M receiver for symmetrical cabinet layout design
- Side panel port layout sequence: 75 Ω BNC video input, ST fiber output port, screw DC power terminals
- Bottom chassis integrated spring clip for direct 35 mm DIN rail snap mounting
- Front panel dual LED visual status indicators for real-time on-site diagnostic visibility
Working Principle
75 Ω analog composite video signal enters via BNC input port and feeds to onboard buffer amplifier. Amplified analog video signal modulates the drive current of internal laser diode, varying emitted light intensity proportionally to video voltage fluctuations. Modulated optical light beam couples into connected multi-mode fiber cable for long-distance transmission to paired FVR110M receiver unit. Built-in laser power regulation circuit maintains consistent optical output power across full operating temperature range.
Advantage Highlights
- Complete galvanic electrical isolation between camera field location and control room to eliminate ground loop video hum distortion
- Zero susceptibility to electromagnetic interference from high voltage industrial equipment
- Wide temperature operating range enables installation in unconditioned outdoor electrical enclosures
- Matched pair design removes manual calibration requirement between transmitter and receiver
- Broadcast low-distortion video performance for high-detail surveillance monitoring
Applicable Industries
Power grid substation video surveillance, heavy manufacturing plant camera networks, highway traffic analog monitoring systems, airport perimeter security, seaport yard CCTV transmission, mining facility process camera fiber links
Installation Requirements
- Install unit horizontally on standard 35 mm DIN rail inside fully enclosed electrical cabinet
- Apply lint-free fiber cleaning wipe to ST connector end face prior to fiber cable insertion
- Crimp 75 Ω impedance matched BNC connector on all incoming camera coaxial cables
- Provide minimum vertical clearance of 50 mm above chassis for passive thermal dissipation
- Torque DC power terminal screws to 0.8 N·m to prevent loose power connection faults
Usage Precautions
- Do not insert single-mode fiber cables into multi-mode ST port; excessive optical attenuation breaks transmission
- Avoid direct eye exposure to active laser diode optical port output; permanent retinal damage risk
- Exclusively use regulated 12 V DC power supplies; unfiltered power adapters introduce horizontal video noise
- Inspect video input LED indicator during commissioning; dark LED confirms missing camera input signal
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