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.
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