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

Name: Minitype 3GSDI to Fiber Converter with Tally Reverse RS485 Directly compatible with SDI camera systems
Brand: E-link
Price: 25 USD

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

Categories	SDI Fiber Converter
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)

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Company Info.

E-link China Technology Co.,LTD

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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

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

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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

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

Mini 3G-SDI to Fiber Converter

SDI camera fiber converter with tally

3G-SDI converter with RS485 support

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