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1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender Supports hot swapping and hot plugging

1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender

Model: LNK-SDI-8V Series

Overview

The LNK-SDI-8V Series is a professional-grade 1U Rack-Mountable 8-Channel SD/HD/3G-SDI

over Single Fiber CWDM Uncompressed Extender, specifically engineered to meet the high-density,

long-distance transmission needs of broadcast, surveillance, and industrial video systems. As a 1U

Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender, it

adopts a space-efficient 1U rack design—ideal for data centers, broadcast studios, and control rooms

where rack space is valuable, while leveraging Coarse Wavelength Division Multiplexing (CWDM)

technology to optimize single-fiber bandwidth utilization.

This extender supports uncompressed transmission of 8-channel SD/HD/3G-SDI standard high-

definition video signals via a single fiber optical cable, ensuring no loss of video quality during transmission

—critical for applications requiring broadcast-grade visuals. It is equipped with a local SD/HD/3G-SDI

loop output interface, allowing on-site monitoring of video signals to facilitate real-time troubleshooting

and ensure signal integrity before long-distance transmission. The system consists of a dedicated

transmitter and receiver pair, specifically optimized for 1080P 3G-SDI signal transmission, with

backward compatibility for SD-SDI and HD-SDI formats to adapt to diverse legacy and modern video

devices.

Beyond video transmission, the 1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber

CWDM Uncompressed Extender integrates multi-signal synchronization capabilities: it can simultaneously

transmit 8-channel SD/HD/3G-SDI video and 1-channel reverse RS-485 data over a single optical fiber.

The reverse RS-485 data channel supports reliable bidirectional communication, enabling remote control

of PTZ cameras, video matrixes, or other RS-485-enabled devices—enhancing operational flexibility in

large-scale video surveillance or broadcast networks.

In terms of performance, the extender delivers video quality that meets strict broadcast industry standards,

with color accuracy, signal stability, and frame rate consistency suitable for live broadcasting, post-production,

and high-end surveillance. Its audio quality reaches CD-level clarity, ensuring synchronized, high-fidelity audio

transmission alongside video signals. The CWDM technology further enables efficient use of fiber resources,

reducing the need for multiple fiber cables and lowering overall infrastructure costs. With its robust multi-signal

support, rack-mountable design, and broadcast-grade performance, this extender is an ideal solution for broadcast

stations, large-scale security surveillance systems, stadium video networks, and industrial video monitoring

platforms requiring high-density, long-distance uncompressed SDI transmission.

Features

► 8 channel SD/HD/3G-SDI video transmission over optic fiber

► Automatic cable equalization to ensure signal integrity

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

► Directly compatible with 3G-SDI camera systems and support Reverse RS-485 data protocols

► Long transmission capability at least 10 km (6.2miles), up to 120 km

► Terminal block power input for industrial application

► Supports hot swapping and hot plugging

► Full digital non-compression broadcast level transmission;

► super optic dynamic range and free of adjustment prior to use;

► fiber optic WDM/CWDM/DWDM technique;

► Real-time status LED indicators for troubleshooting and monitoring

► Industry level ultra-broad temperature range, 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	Reverse RS485
Frequency/Rate support	Max. 57600bps for RS485
BER	<10ˉ⁹
Electrical
Power adaptor	AC 110~220V
Power consumption	<15W
LED Indicator
SDI A/B/C/D/E/F/G/H	SDI video
PWR	Power Supply
Mechanical
Dimensions (LxWxH)	19inch 1U (483 x 220 x 44.45mm )
Weight	7KG/pair
Casing	Aluminum Case
Mounting Options	Rackmount
Environmental
Working Temperature	-20℃～+70℃
Storage Temperature	-40℃～+80℃
Working Humidity	0~95%
MTBF	≥100000 hours

ordering information

Model	Description
LNK-SDI-8V	19" 1U 8-Ch HD-SDI Video with Loop-out, 20km, SM, LC, including 1 transmitter & 1 receiver, used by pairs
LNK-SDI-8V1R	19" 1U 8-Ch HD-SDI Video with Loop-out + 1-Ch RS485 Reverse Data, 20km, SM, LC, including 1 transmitter & 1 receiver, used by pairs
LNK-SDI-8V1A	19" 1U 8-Ch HD-SDI Video with Loop-out + 1-Ch Forward Audio, 20km, SM, LC, including 1 transmitter & 1 receiver, used by pairs
LNK-3GSDI-8V	19" 1U 8-Ch 3G-SDI 1080P Video with Loop-out, 20km, SM, LC, including 1 transmitter & 1 receiver, used by pairs
LNK-3GSDI-8V1R	19" 1U 8-Ch 3G-SDI 1080P Video with Loop-out + 1-Ch RS485 Reverse Data, 20km, SM, LC, including 1 transmitter & 1 receiver, used by pairs
LNK-3GSDI-8V1A	19" 1U 8-Ch 3G-SDI 1080P Video with Loop-out + 1-Ch Forward Audio, 20km, SM, LC, including 1 transmitter & 1 receiver, used by pairs

Application

Product Tags:

1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender Supports hot swapping and hot plugging

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Categories	HDMI Fiber Extender
Brand Name:	E-link
Model Number:	LNK-SDI-8V Series
Certification:	Iso9001, CE, ROHS, FCC
Place of Origin:	China
MOQ:	1 pair
Price:	$79-739
Payment Terms:	T/T,Western Union,MoneyGram,PayPal
Supply Ability:	1000/Month
Delivery Time:	1-3 working days
Packaging Details:	HDMI Fiber Extender Standard Carton Packaging
Video input/output voltage:	Typical:1Vpp, Min 0.5Vpp, Max 1.5Vpp
Physical interface:	Industrial standard screw terminal
Frequency/Rate support:	Max. 57600bps for RS485
Power consumption:	<15W
Storage Temperature:	-40℃～+80℃
Transmission distance:	550m-20Km

1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender Supports hot swapping and hot plugging

1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender Supports hot swapping and hot plugging

1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender Supports hot swapping and hot plugging

1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender

1U rack-mountable SDI fiber extender

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1U Rack-Mountable 8-Channel SD/HD/3G-SDI over Single Fiber CWDM Uncompressed Extender Supports hot swapping and hot plugging