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Mini 3G-SDI Fiber Converter with Tally RS485 80km CWDM Option
Mini 3G-SDI Fiber Converter with Tally RS485 80km CWDM Option
Model: LNK-M3G-1V Series
Product Description & Overview
The Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 provides a comprehensive yet
compact solution for professional video transmission. This system supports a single channel of high-
definition 3G/HD-SDI video with embedded audio, along with integrated tally signaling and reverse
RS485 control data, all transmitted over a single optical fiber. Designed for complete signal transparency,
it includes a matched transmitter and receiver pair, delivering pristine 1080P resolution with a local loop-
through output for real-time monitoring at the transmission point.
Engineered for operational flexibility, this miniature converter integrates critical production signals into
one streamlined fiber link. The tally channel ensures clear visual communication between the control
room and camera operators, while the bidirectional RS485 interface enables reliable remote control
of PTZ cameras, lenses, and other studio equipment. Its compact form factor makes it an ideal choice
for space-constrained installations, such as broadcast flypacks, camera backplates, and mobile
production units, without sacrificing performance or features.
This robust converter is built to meet the demanding requirements of live production and broadcast
environments. It is perfectly suited for applications such as live event broadcasting, electronic news
gathering (ENG), studio camera links, and high-end video conferencing systems. By converting
electrical signals to optical format, the system provides complete immunity to electromagnetic
interference and ground loop issues, ensuring a stable and reliable connection. This solution
offers broadcasters and AV professionals a powerful, all-in-one tool for extending and managing
professional video signals with maximum reliability and minimum footprint.
Key Features Bullets
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Multi-Channel Embedded Audio
Each SDI channel supports 8 embedded audio channels for comprehensive audio-video integration.
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Intelligent Signal Equalization
Automatic cable equalization ensures optimal performance for all data rates up to 3.2 Gb/s.
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Precision Clock Recovery System
Automatic reclocking across standard rates from 270 Mbps to 3 Gbps for signal integrity.
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Universal Camera System Compatibility
Direct plug-and-play compatibility with industry-standard SDI camera systems.
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Extended Fiber Optic Reach
Supports long-distance transmission up to 80 km over single-mode fiber.
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Hot-Swappable Module Design
Enables hot swap and hot plug functionality for maintenance without system interruption.
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Broadcast-Grade Signal Processing
Handles all pathological patterns with full digital non-compression for studio-quality output.
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Real-Time Operational Monitoring
Integrated LED status indicators for immediate visual confirmation of system health.
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High-Performance Optical Engine
Superior optical dynamic range requiring no manual tuning or adjustment.
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Flexible Wavelength Options
Optional CWDM operation across 1470~1610nm wavelengths for dense fiber utilization.
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Rugged Environmental Design
Industrial-grade operating temperature range from -20℃ to +70℃ for reliable deployment in harsh conditions.
Technical Specifications & Indexes
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Fiber Optical interface
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Fiber interface
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Simplex LC
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Transmission distance
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550m-20Km
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Wavelength
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1310nm/1550nm
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Video
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Video interface
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BNC
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Video input/output impedance
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75Ω
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Video input/output voltage
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Typical:1Vpp, Min 0.5Vpp, Max 1.5Vpp
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Video Bits Rate
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Max 3.2Gb/s
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Differential gain (10%～90% APL)
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<1%
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SDI format support
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625/25 PAL
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525/29.97 NTSC, 525/23.98 NTSC
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720p50, 720p59.94
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1080i 23/24/30/50/59.94
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1080P 23.98/24/30/50/60
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Video SDI standard
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270Mbps (SD-SDI), 1.485Gbps/M(HD-SDI)
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SMPTE425M3Gb/s Mapping(3G-SDI)
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SMPTE424M 3Gb/s serial interface(3G-SDI)
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Data
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Physical interface
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Industrial standard screw terminal
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Data type
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Tally & Reverse RS485
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Frequency/Rate support
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Max. 115200bps for RS422
Max. 57600bps for RS485
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BER
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<10ˉ9
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Electrical
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Power adaptor
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DC 5V
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Power consumption
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<5W
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LED Indicator
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SDI
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SDI video
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P/T
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Power Supply
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Mechanical
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Dimensions (LxWxH)
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73 x 44 x 17 mm (TX)
73 x 44 x 17 mm (RX)
185 x 132 x 100 mm (Package)
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Weight
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75g (TX)
75g (RX)
450g (Package)
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Casing
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Aluminum Case
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Mounting Options
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Desktop
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Environmental
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Working Temperature
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-20℃～+70℃
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Storage Temperature
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-40℃～+80℃
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Working Humidity
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0~95%
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MTBF
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≥100000 hours
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Ordering Information
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Model
|
Description
|
|
LNK-M3G-1V-MM
|
Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 and loop out, MMF, LC Fiber Connector 500 meters, including Transmitter and Receiver, used by pairs
|
|
LNK-M3G-1V-20
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Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 and loop out, SMF, LC Fiber Connector 20KM, including Transmitter and Receiver, used by pairs
|
|
LNK-M3G-1V-40
|
Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 and loop out, SMF, LC Fiber Connector 40KM, including Transmitter and Receiver, used by pairs
|
Application Scenarios
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Compact live broadcast and studio camera systems
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Mobile production units for ENG and events
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Professional video conferencing and telepresence
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Industrial monitoring with camera control
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High-end security and surveillance systems
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