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SDI / ASI Over Fiber



1 Channel HD/SD-SDI Over Fiber Extender Kit with RS485 channel

Tech Specs
Application Drawing

QuestTel's L-1SDI-FE-TX/RX is a compact factor high performance HD-SDI fiber extender for cctv and live video applications, which supports both singlemode and multimode optical transmission types. This sdi over fiber solution includes transmitter and a receiver, providing transmission of one sdi channel with embedded audio, as well as one reversed rs485 data channel. QuestTel's sdi over fiber extender perfectly suits video surveillance, public security industry and live broadcasting applications. L-1SDI-FE-TX/RX comes with a big variety of features such as loss-free video transmission in high quality without compression, compatibility with all professional fiber interfaces, embedded audio with ancillary data and rs485 channel for advanced camera control. Optical transmission excludes electromagnetic noise factor and extends signal up to 20km (optional 40/60/80km), while conventional coax cables can handle less than 100 meters. Integrated LED indicators display DC Power state and laser working state on both sides making troubleshooting easy.

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1 Channel HD/SD-SDI Over Fiber Extender Kit with RS485 channel

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    • Supports both mulimode and singlemode fiber cables.
    • Engineered for high performance and reliability
    • Optional 3G-SDI transceiver kits
    • 8 Emdedded Audo channels
    • One reversed RS485 channel, half duplex, bit rate up to 115.2Kb/s
    • Compatible with SDI digital video transmission standards like HD-SDI SMPTE-292M and SMPTE-259M
    • Auto adaptive bit rate up to 1.485Gb/s
    • Fully compatible with error free pathological pattern operation
    • HD Resolutions support - 1080P@30/29.97/25/24/23.98, 1080I@60/59.94/50, 720P@60/59.94/50/30/29.97/25/24/23.98
    • DVB-ASI data passthrough support
    • Integrated HD-SDI reclocker and cable equalizer
    • LED alarm indications, output status indicator and input lock indicator
    • Mini Size available L-1SDI-FE-MN-TX/RX ( 80mm × 32mm × 29 mm)
Tech Specs
L-1SDI-FE-TX Optical interface
Wavelength(nm) TX1310/RX1550
Transmission Distance Over Single Mode Fiber (Km)  20Km   40/60/80-Km Optional
Transmission distance Over Single Mode Fiber (Mile)  12Mile  24/37/49-Mile Optional
Transmission Distance Over Multimode Mode Fiber (Km)  600Meter
Transmission Distance Over Multimode Mode Fiber (Mile)  2000Feet
launched power (dBm) -6~-1
Connector ST/PC
Maximum receive sensitivity (dBm) -32
L-1SDI-FE-RX Optical interface
Wavelength(nm) TX1550 / RX1310
launched power (dBm) -14~-7 
Connector ST/PC
Maximum receive sensitivity (dBm) -21 
L-1SDI-FE-TX/RX Supports Signals



Connector BNC
Transmiter Input 1-SDI & 1-RS-485
Reciver Output 1-SDI & 1-RS-485
Bit rate 2.97Gb/s,1.5Gb/s and 270Mb/s auto adaptive
Impendance 75Ω
Return loss >15dB
Level 800mVp-p±10%
Rise and fall time (HD-SDI) ≤270ps
Rise and fall time (SD-SDI) ≤1.50ns
SD-SDI Alignment jitter (1KHz) ≤0.2UI
SD-SDI Timing jitter (10Hz) ≤0.2UI
HD-SDI Alignment jitter (100KHz) ≤0.2UI
Connector PHOENIX connector
Baud rate 0~115.2Kb/s
Bit error ratio <10-9
Work mode Half-duplex
Power and Consumption  
Power supply DC 12V
Range 8V~14V
Power consumption 1.5W±10%
Working temperature -30C+50°C  / +80°F
Relative Humidity ≤95%, no condensation
Equipment dimension 93.2mm×46.2mm×29.6mm


L-1SDI-FE-HD-TX-RX SDI Over Fiber  Pdf User Manual: L-1SDI-FE-HD-TX-RX


L-1SDI-FE-HD-TX-RX Promo Page  L-1SDI-FE-HD-TX-RX Promo Page 


L-1SDI-FE-HD-TX-RX Promo Page  SDI over Fiber Transmitter and Receiver


QuestTel HD-SDI Fiber Optical Converter is suitable for OB Vans, Rental and Staging, DVB Return and Production, On-site Production, DVB-ASI Transmission, News Gathering, Live Broadcast Signal Transmission, Remote Studio, Universal Digital Video Transmission Business, Telecommunication Signal Transmission Business, Airport or Transportation Hubs, Stadiums and Theaters... etc.


Disclaimer: Products, specifications and data are subject to change without notice, to improve reliability, function, design or otherwise.

QuestTel shall have no liability for any error or damage of any kind resulting from the use of this document.
Application Drawing 1 Channel HD/SD-SDI Over Fiber Extender Kit with RS485 channel's Application Drawing
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