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Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 Directly compatible with SDI camera systems
Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 Directly compatible with SDI camera systems
Specifications
Brand Name :
E-link
Model Number :
LNK-M3G-1V Series
Certification :
ISO9001, CE, ROHS, FCC
Place of Origin :
China
MOQ :
1 pair
Price :
$25-369
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
Wavelength :
1310nm/1550nm
Video input/output voltage :
Typical:1Vpp, Min 0.5Vpp, Max 1.5Vpp
Physical interface :
Industrial standard screw terminal
Data type :
Tally & Reverse RS485
Storage Temperature :
-40℃～+80℃
Dimensions (LxWxH) :
73 x 44 x 17 mm (TX) 73 x 44 x 17 mm (RX) 185 x 132 x 100 mm (Package)
Description

Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485


Model: LNK-M3G-1V Series


Overview

The LNK-M3G-1V Series is a compact, high-performance Mini-type 3G-SDI to Fiber Converter
with Tally & Reverse RS485, specifically engineered to integrate multi-signal transmission into
a space-saving mini form factor—ideal for scenarios where installation space is limited, such
as portable broadcast setups, compact control cabinets, on-site surveillance deployments, or
small-scale live production environments. As a Mini-type 3G-SDI to Fiber Converter with Tally
& Reverse RS485, it combines reliable 3G/HD-SDI video transmission with essential auxiliary
signals, catering to professional fields that demand both miniaturization and multi-functional
integration for efficient workflow operations.


This converter supports synchronized transmission of 1-channel 3G/HD-SDI video signals
(with embedded audio for seamless audio-video synchronization), 1-channel Tally signal, and
1-channel Reverse RS485 data signals via a single fiber optical cable—eliminating the need
for multiple independent cables, simplifying on-site infrastructure deployment, and reducing
overall installation and maintenance costs. It is equipped with a local 3G/HD-SDI loop output,
allowing users to monitor the source video signal in real time at the transmitter end; this real-
time monitoring function ensures signal integrity before long-distance transmission, facilitates
quick troubleshooting in professional workflows, and avoids potential issues caused by signal
loss, distortion, or degradation in complex environments.


The Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 is supplied as a complete
functional set, including one dedicated transmitter unit and one matching receiver unit, which
work together to form a stable, full-duplex transmission link. It is optimized for 1080P 3G/HD-
SDI signal transmission, ensuring crisp, broadcast-grade video quality that meets the standards
of professional AV applications—whether used in live event streaming, studio monitoring, or high
-definition surveillance. Meanwhile, the converter maintains backward compatibility with HD-SDI
formats, making it flexible enough to adapt to existing HD-SDI systems, avoiding the need for full
infrastructure overhauls when upgrading or expanding.


The integrated 1-channel Tally signal function is critical for professional broadcast and live production
scenarios, enabling real-time status indication of video sources (such as “on-air” active status or
“preview” standby status) to help production teams coordinate smoothly and avoid operational errors.
The 1-channel Reverse RS485 function supports bidirectional serial data communication, allowing
remote control of connected devices like PTZ cameras, studio lighting controllers, or industrial monitoring
equipment from the receiver end—enhancing operational flexibility and reducing the need for on-site
manual adjustments. With its compact mini design, stable multi-signal transmission, and broadcast-
grade video performance, this converter is ideal for professional scenarios including portable broadcast
studios, live event video transmission, mid-scale HD surveillance networks, and remote industrial monitoring
systems. It effectively resists electromagnetic interference (EMI) and signal attenuation over long fiber
distances, ensuring consistent HD video quality, reliable Tally status feedback, and smooth Reverse RS485
control—making it a practical, cost-effective solution for modern professional 3G-SDI video transmission needs.


Features

► Each channel includes 8-channel audio embedded;

► Automatic cable equalization, used for all rate below 3.2 Gb/s (Belden 1694A);

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

► Directly compatible with SDI camera systems

► Long transmission capability up to 80 km

► Hot swap and hot plug;

► Handle all Pathological patterns, fully digital non-compression broadcast level transmission;

► LED Status Indication to monitor the working conditions;

► super optic dynamic range and free of adjustment;

► 1470~1610nm CWDM wavelengths optional;

► industry level ultra-broad temperature range (-20℃~+70℃), adaptable to various environments;


Technical 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

Tally & Reverse RS485

Frequency/Rate support

Max. 115200bps for RS422

Max. 57600bps for RS485

BER

<10ˉ9

Electrical

Power adaptor

DC 5V

Power consumption

<5W

LED Indicator

SDI

SDI video

P/T

Power Supply

Mechanical

Dimensions (LxWxH)

73 x 44 x 17 mm (TX)

73 x 44 x 17 mm (RX)

185 x 132 x 100 mm (Package)

Weight

75g (TX)

75g (RX)

450g (Package)

Casing

Aluminum Case

Mounting Options

Desktop

Environmental

Working Temperature

-20℃～+70℃

Storage Temperature

-40℃～+80℃

Working Humidity

0~95%

MTBF

≥100000 hours


Ordering information

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

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

Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 Directly compatible with SDI camera systems


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Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 Directly compatible with SDI camera systems

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Product Detail
Brand Name :
E-link
Model Number :
LNK-M3G-1V Series
Certification :
ISO9001, CE, ROHS, FCC
Place of Origin :
China
MOQ :
1 pair
Price :
$25-369
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Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 Directly compatible with SDI camera systems

E-link China Technology Co.,LTD

Verified Supplier
5 Years
shenzhen
Since 2001
Business Type :
Manufacturer, Exporter
Main Products :
Industrial PoE Switch, Industrial Ethernet Switch, Industrial Fiber Media Converter
Total Annual :
>10000000
Employee Number :
21~200
Certification Level :
Verified Supplier
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