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Mini 4K HDMI Fiber Extender with RS232 & External Audio with Transmission distance up to 80km over fiber cable
Mini 4K HDMI Fiber Extender with RS232 & External Audio
Model : LNK-MHRA4K Series
Overview
The LNK-MHRA4K Series is a high-performance Mini 4K HDMI Fiber Extender with RS232
& External Audio, specifically engineered to enable synchronized long-distance transmission
of uncompressed lossless video, serial data, and stereo audio signals—combining compact
design with versatile functionality for modern AV and industrial applications. As a Mini 4K HDMI
Fiber Extender with RS232 & External Audio, it integrates multi-signal transmission capabilities
into a streamlined form factor, making it ideal for space-constrained scenarios where both 4K
visual quality and multi-signal synchronization are critical, such as wall-mounted AV setups or
compact control cabinets.
This extender supports transmission of uncompressed lossless HDMI 1.4a signals, RS232
serial signals, and stereo audio over a single optical fiber, with a maximum transmission distance
of 80km—far exceeding the range of traditional copper-based solutions. It delivers a maximum
resolution of 4K*2K@60Hz (YUV 4:2:0), ensuring crisp, high-fidelity video output that meets the
demands of high-end applications like large-scale digital signage, professional surveillance monitoring,
or high-definition conference rooms. The integrated RS232 port enables reliable transmission of serial
data, supporting remote control and management of connected devices such as projectors, industrial
controllers, or legacy AV equipment, while the external stereo audio function ensures immersive sound
reproduction, enhancing the overall multimedia experience for end users.
The transmitter unit of the Mini 4K HDMI Fiber Extender with RS232 & External Audio converts HDMI
signals into a single 10Gb/s high-speed serial data stream, which is then transmitted over optical fiber
to maintain signal integrity over long distances; the receiver unit accurately reconverts the serial data
back to HDMI signals, along with synchronized RS232 and audio signals, ensuring no loss of quality
or delay. Compliant with RoHS standards and lead-free, the extender meets strict environmental
regulations in Europe and China, aligning with global sustainability requirements. It also boasts strong
anti-interference capabilities, effectively resisting electromagnetic interference (EMI) and radio frequency
interference (RFI) common in industrial or busy AV environments, thus guaranteeing stable signal transmission
even in complex electrical conditions.
This makes the LNK-MHRA4K Series suitable for a wide range of professional and consumer applications,
including large-screen display systems in exhibition centers, high-end video conferencing setups, premium
home entertainment theaters, remote industrial monitoring stations, and digital signage networks. The
combination of 4K resolution support, 80km long-distance transmission, RS232 and audio integration, and
compact design establishes it as a reliable, all-in-one solution for modern high-definition multi-signal
transmission needs.
Features
► HDMI 1.4a and HDCP1.2 Support
► Uncompressed transmission, No delay, No losses
► DDC HPDT Signal Support
► Data rate up to 10.2Gbps
► Transmission distance up to 80km over fiber cable
► Supports All Modes up to maximum 4K*2K@60Hz, YUV 4:2:0
► Support external stereo audio
► Support Serial RS232 Signal
► Hot-Pluggable, EMI/RFI Resistant
► Miniature form factor for ease of use and installation
► Operating Case Temperature: -10~50°C
Technical Indexes
|
Type of Extender
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Fiber Transmitter for HDMI signal over Optical Fiber Cable
|
|
Input Signals
|
HDMI
|
|
Connector
|
Female HDMI type A
|
|
Signal Support
|
HDMI 1.4a HDMI format standard and HDCP compliant
|
|
Video Support
|
Up to 720P/960P/1080p@60Hz, 4K*2K@30Hz
|
|
Audio Support
|
Dolby TrueHD, Dolby Digital Plus, DTS, DTS-ES 6.1, DTSHD, DTS-HD-HRA, DTS-HD Master, (PCM-2CH)
|
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Chroma Subsampling
|
Max 3840*2160@60Hz (4:2:0)
Max 3840*2160@30Hz (4:4:4, 4:2:2)
|
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EDID
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Bi-Directional (Forward + Backward) Transmission:
Support Dynamic EDID, Plug & Play, no need to learn
Single-Directional (Forward) Transmission:
Support EDID learning manually
|
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Audio Interface
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3.5MM external stereo audio
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RS232
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3 Pin terminal, Baud rate ≤ 38400
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Fiber Connector
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SFP/LC
|
|
Bandwidth
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10.2Gbps
|
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Transmission Distance
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300m (Over OM3 Fiber)
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Up to 80km (Over Single-mode Fiber)
|
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Operating Temperature
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-10 to + 50°C
|
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Storage Temperature
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-20 to + 80°C
|
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Humidity
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5% to 90% RH (non-condensing)
|
|
MTBF
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100,000 hours
|
|
Dimension (WxDxH)
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2.87 x 1.73 x 0.69in (73x44x17mm)
|
|
Weight
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60g / 0.13 lb
|
|
Power Supply
|
5V DC, USB Typ-C
|
|
Power dissipation
|
<5W
|
|
Safety Approvals
|
CE, FCC, Rohs
|
Ordering Information
|
Model
|
Description
|
|
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LNK-MHRA4K-MM
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Mini HDMI Fiber Extender: 1Ch HDMI Signal(4K*2K) + 1Ch Stereo Audio + Backwards RS232, OM3 Multi-mode Fiber, 300 meters, LC, including 1 transmitter & 1 receiver, 5V DC Type-C Power Input
|
|
LNK-MHRA4K-S20
|
Mini HDMI Fiber Extender: 1Ch HDMI Signal(4K*2K) + 1Ch Stereo Audio + Backwards RS232, Single-mode Fiber, 20km, LC, including 1 transmitter & 1 receiver, 5V DC Type-C Power Input
|
|
LNK-MHRA4K-S40
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Mini HDMI Fiber Extender: 1Ch HDMI Signal(4K*2K) + 1Ch Stereo Audio + Backwards RS232, Single-mode Fiber, 40km, LC, including 1 transmitter & 1 receiver, 5V DC Type-C Power Input
|
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LNK-MHRA4K-S80
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Mini HDMI Fiber Extender: 1Ch HDMI Signal(4K*2K) + 1Ch Stereo Audio + Backwards RS232, Single-mode Fiber, 80km, LC, including 1 transmitter & 1 receiver, 5V DC Type-C Power Input
|
Application
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