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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
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
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