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E-link China Technology Co.,LTD

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  3. 4-Channel 3G-SDI Fiber Converter with RS485 & Tally with Automatic cable
China 4-Channel 3G-SDI Fiber Converter with RS485 & Tally with Automatic cable
China 4-Channel 3G-SDI Fiber Converter with RS485 & Tally with Automatic cable

  1. China 4-Channel 3G-SDI Fiber Converter with RS485 & Tally with Automatic cable

4-Channel 3G-SDI Fiber Converter with RS485 & Tally with Automatic cable

  1. MOQ： 1 pair
  2. Price： $25-369
  3. Get Latest Price
Payment Terms T/T,Western Union,MoneyGram,PayPal
Supply Ability 1000/Month
Delivery Time 3-5 working days
Packaging Details SDI Fiber Extender Standard Carton Packaging
Equilibrium 0-150m @3Gb/s
Reflection loss >15DB
Transmission distance 20km (Other distance Optional)
Signal level 800mV nominal
Operating temperature -10℃～＋55℃
Power Input 1A@12VDC
Brand Name E-link
Model Number LNK-3GSDI-4V1DT
Certification ISO9001, CE, ROHS, FCC
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T,Western Union,MoneyGram,PayPal Supply Ability 1000/Month
Delivery Time 3-5 working days Packaging Details SDI Fiber Extender Standard Carton Packaging
Equilibrium 0-150m @3Gb/s Reflection loss >15DB
Transmission distance 20km (Other distance Optional) Signal level 800mV nominal
Operating temperature -10℃～＋55℃ Power Input 1A@12VDC
Brand Name E-link Model Number LNK-3GSDI-4V1DT
Certification ISO9001, CE, ROHS, FCC Place of Origin China
High Light 4-channel SDI fiber converter ，3G-SDI converter with RS485 ，SDI fiber converter with tally

4-Channel 3G-SDI Fiber Converter with RS485 & Tally

Model: LNK-3GSDI-4V1DT


Overview

The LNK-3GSDI-4V1DT Series is a high-performance 4-Channel 3G-SDI Fiber Converter with
RS485 & Tally, specifically engineered to integrate multi-channel video transmission and auxiliary
signal synchronization into a single fiber optical cable—catering to professional broadcast, surveillance,
and live production scenarios that demand high-density, reliable signal delivery. As a 4-Channel 3G-SDI
Fiber Converter with RS485 & Tally, it combines robust multi-video channel support with essential
control signals, enabling efficient, space-saving deployment in broadcast studios, live event setups,
or large-scale HD surveillance networks.

This converter supports synchronized transmission of 4-channel HD/3G-SDI standard high-definition
video signals, 1-channel RS485 data signals, and 4-channel Tally signals via a single fiber optical
cable—eliminating the need for multiple independent cables, simplifying infrastructure complexity,
and reducing installation and maintenance costs. It is supplied as a complete functional set, including
one dedicated transmitter unit and one matching receiver unit, both optimized for 1080P 3G-SDI signal
transmission to ensure consistent, broadcast-grade video quality. The non-compressed video transmission
design preserves every detail of the original signal, meeting the strict quality standards of professional
broadcast fields where image clarity and color accuracy are non-negotiable.

A key advantage of the 4-Channel 3G-SDI Fiber Converter with RS485 & Tally is its integrated loop
output function: the transmitter unit provides loop outputs for each 3G-SDI channel, allowing users to
connect local monitors for real-time signal previews. This feature facilitates quick troubleshooting (such
as identifying signal anomalies early) and ensures signal integrity before long-distance transmission,
critical for time-sensitive broadcast or live event operations. Additionally, the 4-channel Tally signal support
enables real-time status indication of each video source (e.g., “on-air” active status or “preview” standby
status), helping production teams coordinate seamlessly and avoid operational errors in multi-camera setups.

The backwards RS485 function further enhances operational flexibility by supporting bidirectional serial data
communication, enabling remote control of connected devices like PTZ cameras, studio lighting controllers,
or video switchers from the receiver end—reducing the need for on-site manual adjustments and streamlining
workflow efficiency. With its stable multi-signal transmission performance, broad compatibility with HD/3G-SDI
devices, and broadcast-level video quality, this converter is widely applicable in professional fields including TV
broadcast studios, live sports events, large-scale stage productions, and high-end HD surveillance systems. It
effectively resists electromagnetic interference (EMI) and signal attenuation over long fiber distances, ensuring
consistent video output, reliable Tally status feedback, and smooth RS485 control—making it a comprehensive,
cost-effective solution for modern multi-channel 3G-SDI signal transmission needs.


Features

► 4 channel 3G/HD-SDI video transmission over optic fiber

► Automatic cable equalization to ensure signal integrity

► Automatic reclocking 270Mbit/s - 1.48Gbit/s-3Gbit/s

► Directly compatible with 3G/HD-SDI camera systems and support 4Ch Loop output

► Long transmission up to 20 km (12.5miles) (Other distance Optional)

► Supports 4Ch Tally

► Full digital non-compression broadcast level transmission;

► Support 1Ch backward RS485 and 4Ch Tally;

► Working temperature range (-10℃~+55℃)

     

Technical Indexes

SDI Input

SMPTE 424M, SMPTE 292M, SMPTE 259M, DVB-ASI, DVB-SSI and Telecom/Datacom

270Mbit/s - 1.48Gbit/s – 3Gbit/s

Input number: 4

Reflection loss: >15DB

Equilibrium: 0-150m @3Gb/s

Connector: BNC

Optics

Channel: 1

Type: single-mode

Transmission distance: 20km (Other distance Optional)

Reflection loss: > 15dB

Dithering: < 0.2UI

Connector: FC/UPC (SC, LC, ST optional)

SDI Output

Output number:4

Signal level: 800mV nominal

Rise/fall time: 200ps indication

Overshoot: < 10% amplitude

Reflection loss: >15dB

Dithering: < 0.2UI

Connector: 75Ω BNC

Data

1Ch RS-485 (full/half duplex) and support NRZ, RZI and Manchester

Max. 57600bps for RS485

Connector: Industrial standard screw terminal

4Ch Tally: A, B , C, D

Power and environmental indication

Operating temperature: -10℃～＋55℃

Power Input: 1A@12VDC

EMI/RFI: meet FCC Part 15 Class A, EU EMC standard

Average time trouble-free: >100000 hours

SDI video format supports

625/25PAL; 525/29.97NTSC; 525/23.98NTSC; 720p50; 720p59.94;

1080P23.98/24/30/50/60; 1080i 23/24/30/50/59.94;


ordering information

LNK-HDSDI-4V1D4T

4-Ch HD-SDI Video with Loop output + 1Ch backward RS485 + 4Ch Tally, SM 20km, FC, including 1 transmitter & 1 receiver, used by pairs

LNK-3GSDI-4V1D4T

4-Ch 3G-SDI Video with Loop output + backward RS485 + 4Ch Tally, SM 20km, FC, including 1 transmitter & 1 receiver, used by pairs


Application


Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Exporter

  • Year Established:

    2001

  • Total Annual:

    >10000000

  • Employee Number:

    21~200

  • Ecer Certification：

    Verified Supplier

Established in 2001 & headquartered in Shenzhen, E-link China Technology Co., Ltd. (E-link) is a leading manufacturer of fiber optic communication and video transmission products in China. Our main products include: Fiber Media Converters Industrial Ethernet PoE switchs  P... Established in 2001 & headquartered in Shenzhen, E-link China Technology Co., Ltd. (E-link) is a leading manufacturer of fiber optic communication and video transmission products in China. Our main products include: Fiber Media Converters Industrial Ethernet PoE switchs  P...

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Get in touch with us

  • Reach Us
  • E-link China Technology Co.,LTD
  • 5F, Building D South, Jinshenghui Science Park, No. 3, Dafu Road, Fucheng Street, Guanlan, Longhua District, Shenzhen, China
  • https://www.industrialpoeswitches.com/

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