Price	US$1189-US$1199
MOQ	1pcs
Delivery Time	3-5 working days
Brand	E-link
Place of Origin	China
Certification	ISO9001
Model Number	LNK-3GSDI-4BV Series
Packaging Details	Industrial Fiber Media Converter Standard Carton Packaging
Payment Terms	L/C,T/T,Western Union,MoneyGram,PayPal
Supply Ability	100PCS/Month

Product Details

Data type	Reverse RS485	Place of Origin	China
Packaging Details	Industrial Fiber Media Converter Standard Carton Packaging	Frequency/Rate support	Max. 57600bps for RS485
Power adaptor	AC 110~220V	Transmission distance	550m-20Km
Video interface	BNC	Model Number	LNK-3GSDI-4BV Series
Supply Ability	100PCS/Month	Certification	ISO9001
Brand Name	E-link	Payment Terms	L/C,T/T,Western Union,MoneyGram,PayPal
Price	US$1189-US$1199	Delivery Time	3-5 working days
Video Bits Rate	Max 3.2Gb/s	Minimum Order Quantity	1pcs

4 Channel 3G-SDI Fiber Optic Converter Bidirectional Video Transmission 120km

Model: LNK-3GSDI-4BV Series

Product Description & Overview

The 4-Channel Bidirectional 3G-SDI Fiber Converter represents a cutting-edge solution for professional

broadcast and video transmission applications requiring high-density signal distribution. This advanced

fiber optic system enables simultaneous transmission of four channels of bidirectional 3G-SDI high-definition

video signals over a single optical fiber, maintaining full 1080p resolution and broadcast-standard video

quality throughout the transmission path. Each channel incorporates both local 3G/HD-SDI loop output

for signal monitoring and long-distance fiber optic transmission capability, providing comprehensive

signal management flexibility for live production environments.

Engineered to meet rigorous broadcast industry standards, this converter pair utilizes advanced wavelength

division multiplexing technology to consolidate multiple video channels alongside reverse RS-485 data

communication through a single fiber strand. The integrated RS-485 data channel supports bidirectional

control signals for PTZ camera operations, lens control systems, and other broadcast equipment requiring

reliable serial communication. The system delivers exceptional audio performance with CD-quality transmission

capabilities, ensuring perfect synchronization between video and audio components across extended distances.

This high-performance fiber converter finds ideal application in broadcast studios, live event production,

sports venues, and distance learning facilities where reliable multi-channel video transmission is critical.

The compact design and single-fiber implementation significantly reduces cabling complexity and infrastructure

costs while providing immunity to electromagnetic interference and ground loop problems common in traditional

copper-based video systems. With its robust construction and broadcast-grade components, this solution offers

television stations, production companies, and AV integrators a reliable and scalable platform for distributing high-

definition video content across campus environments, between buildings, or throughout large facilities while

maintaining the highest quality standards required for professional broadcasting applications.

Key Features Bullets

Multi-Channel HD Video Transmission
Supports 4-channel bidirectional 3G-SDI video transmission over single fiber optic cable
Advanced Signal Integrity Protection
Automatic cable equalization and re-clocking from 270Mbps to 3Gbps ensures optimal signal quality
Broadcast Standard Video Quality
Full digital non-compression transmission maintaining broadcast-level video and CD-quality audio
Professional Camera System Integration
Direct compatibility with 3G-SDI cameras and support for Reverse RS-485 control protocols
Extended Distance Transmission
Long-range transmission capability from 10km to 120km without signal degradation
Industrial Power Design
Terminal block power input for reliable connectivity in industrial and broadcast applications
Hot Swappable Operation
Supports hot swapping and hot plugging for uninterrupted system maintenance
Advanced Optical Technology
Utilizes WDM/CWDM/DWDM fiber techniques with superior optic dynamic range
Wide Temperature Operation
Industrial ultra-broad temperature range (-40℃ to +85℃) for extreme environment deployment
Zero-Configuration Operation
Fiber optic transmission system requires no adjustment prior to installation and use

Technical Specifications & Indexes

Fiber Optical interface
Fiber interface	Simplex LC
Transmission distance	550m-20Km
Wavelength	1310nm/1550nm
Video
Video interface	BNC
Video input/output impedance	75Ω
Video input/output voltage	Typical:1Vpp, Min 0.5Vpp, Max 1.5Vpp
Video Bits Rate	Max 3.2Gb/s
Differential gain (10%～90% APL)	<1%
SDI format support	625/25 PAL
	525/29.97 NTSC, 525/23.98 NTSC
	720p50, 720p59.94
	1080i 23/24/30/50/59.94
	1080P 23.98/24/30/50/60
Video SDI standard	270Mbps (SD-SDI), 1.485Gbps/M(HD-SDI)
	SMPTE425M3Gb/s Mapping(3G-SDI)
	SMPTE424M 3Gb/s serial interface(3G-SDI)
Data
Physical interface	Industrial standard screw terminal
Data type	Reverse RS485
Frequency/Rate support	Max. 57600bps for RS485
BER	<10ˉ⁹
Electrical
Power adaptor	AC 110~220V
Power consumption	<15W
LED Indicator
SDI A/B/C/D/E/F/G/H	SDI video
PWR	Power Supply
Mechanical
Dimensions (LxWxH)	19inch 1U (483 x 220 x 44.45mm )
Weight	7KG/pair
Casing	Aluminum Case
Mounting Options	Rack mount
Environmental
Working Temperature	-20℃～+70℃
Storage Temperature	-40℃～+80℃
Working Humidity	0~95%
MTBF	≥100000 hours

Ordering information

Model	Description
LNK-3GSDI-4BV	4-Ch Bidirectional 3G-SDI Video with loop-out, 20km, SM, FC, including 1 transmitter & 1 receiver, used by pairs
LNK-3GSDI-4BV1R	4-Ch Bidirectional SDI Video with loop-out + 1-Ch RS485 Reverse Data, 20km, SM, FC, including 1 transmitter & 1 receiver, used by pairs

Application Scenarios

4 Channel 3G-SDI Fiber Optic Converter Bidirectional Video Transmission 120km