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SDI Over Fiber



8 Channel HD-SDI Over Fiber Extender Kit with RS485 channel

Tech Specs
Application Drawing

QuestTel's L-8SDI-FE-HD-TX/RX is a high performance, and reliable, 8-channel HD-SDI video optical transceiver, which perform real-time, loss-free and high-quality video transmission and one unidirectional (default)/bi-directional RS485 data over an optical line. The L-8SDI-FE-HD-TX/RX provides optional audio/contact closure/RS422/RS232 data transmission, which can be widely used in TV live broadcast, high-definition video conference, high-definition video monitoring, intelligent transportation system and public security system. 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.

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8 Channel HD-SDI Over Fiber Extender Kit with RS485 channel

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    • Comply with SMPTE-292M HD-SDI standard
    • 8 HD-SDI channels (BNC)
    • 1080P@30,25,24, 1080I@60,50 and 720P@60,50,30,25,24
    • Each SDI channel includes 2-channel audio embedded
    • Two auxiliary channels: audio, RS422 , or RS232 channel
    • One bi-directional RS485 channel, half duplex, up to 115.2Kb/s baud rate
    • With integrated cable equalizer
    • Embedded ESD and surge protection circuit to prevent damage from static and thunder
    • With NOP (No optical signal) alarm indications, output status indicator and input lock indicator
Tech Specs
HD-SDI Interface  
Connector BNC
Fiber Connector ST/PC
Bit rate 1.485Gb/s and 270Mb/s auto adaptive
Impedance 75Ω
Return loss >15dB
Output 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
HD-SDI Timing jitter (10Hz) <1.0UI
Standard Comply to SMPTE-292M HD-SDI and
SMPTE-259M SD-SDI standard
Audio Interface (Optional)  
Connector PHOENIX connector
Quantization grade 20 bits
Sample frequency 48KHz
Audio input/output voltage 2VP-P
Bandwidth 20Hz~20KHz
Total Harmonic Distortion 0.1%
RS485 Interface  
Connector PHOENIX connector
Baud rate 0~115.2Kb/s
Bit error ratio <10-9
Duplex Half-duplex
CONSOLE Interface  
Connector RJ45
Baud rate 19200
bits 8
Stop bit 1
parity check None
EMU/EMU-EX Interface  
Connector RJ45
Bit rate 10Mb/s or 100Mb/s auto adaptive
Power and Consumption for desktop equipment  
Power supply DC 12V
DC input voltage range 8V~14V
Power consumption 3W±10%
Environment Requirements  
Working temperature -30~60°C
Relative Humidity ≤95%, no condensation
Storage temperature -40~85°C

Equipment dimension: Dimension of  Rack mounting

chassis (with rack ear)

Equipment dimension: Desktop equipment dimension 434mm×44mm×155mm


L-8SDI-FE-HD-TX-RX SDI Over Fiber  Pdf User Guide 


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 8 Channel HD-SDI Over Fiber Extender Kit with RS485 channel's Application Drawing
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The QuestTel's Quality System is an integral part of the management methodolgy of the organization and is designed to enhance and perpetuate the reputation of the Company as a designer and manufacturer of reliable quality Broadcast Systems products.



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