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E-link China Technology Co., Ltd.
E-link China Technology Co.,Ltd. Professional Fiber Optical Communication and CCTV Security Transmission Product Manufacturer
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4-Ch Bidirectional Forward and Backward Audio over CCTV Fiber Optic Converter

E-link China Technology Co., Ltd.

City: shenzhen



Contact Person:MrMichael Guo View Contact Details

4-Ch Bidirectional Forward and Backward Audio over CCTV Fiber Optic Converter

Brand Name : E-link China
Model Number : LNK-4BA
Certification : CE, RoHS, FCC
Place of Origin : Shenzhen, China
MOQ : 1 pair
Payment Terms : T/T, Western Union, MoneyGram, Paypal
Supply Ability : 1000000000pairs/Month
Delivery Time : 3-5 working days
Packaging Details : 1 pair in 1 carton box
Price : Negotiation
Audio Channel : 4CH Forward + 4CH Backward
Audio Digital Bandwidth : 10Hz~20kHz
Audio Digital Bit Width : 24bit
Nominal input output level : S/N≥95dB (weighted)
Audio signal-to-noise ratio : 75dB
Audio connector : Pressure connector
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4-Ch Bidirectional Forward and Backward Audio over CCTV Fiber Optic Converter

Model: LNK-4BA Series


LNK-4BA Audio over Fiber Converter can simultaneously transmit 4-Ch Bidirectional Audio (4Ch Forward Audio + 4Ch Backward Audio) signal through one optical fiber. The product has the audio quality up to CD level. All optical and electrical interfaces are in compliance with international standard, with electromagnetic compatibility design, anti-static and lightning, being suitable for worse working conditions, with high stability and reliability.


  • Non-compression digital audio transmission, quality image, and real-time
  • Support simultaneous transmission of audio signal
  • Audio, input/output voltage level: 2Vp-p
  • The interfaces have the function against thunder, static and surge.
  • No electromagnetic interference, no radio frequency interference and ground current
  • Adoption of VLSI ASIC chip, low power consumption, 4-layer circuit board design, high reliability
  • Adopt industrial chip, industrial design; ensure the long-term operation free from trouble under harsh working environment.
  • Modular structure, plug and play, hot plug, no need of debugging
  • Provide desktop/ card type device, applicable to all cases.

Technical Index

Audio interfaceAudio Channel4CH Forward + 4CH Backward
Audio input / output impedance600Ω (Balance/Imbalance)
Audio input / output voltage2Vpp ( typical value)
Audio input / output level0 dBm ( typical value)
Audio Digital Bandwidth10Hz~20kHz
Audio Digital Bit Width24bit
Nominal input output levelS/N≥95dB (weighted)
Audio signal-to-noise ratio75dB
Total harmonic distortion0.1%
ConnectorAudio connector:Pressure connector
Optical flexible connectorFC/PC
Power consumption<15W(single end)
Environmental condition:Operating temperature-25℃~+70℃
Storage temperature-40℃~+80℃
Relative humidity0~95%(non condensable)

Contact Information:

Email: sales(at)e-linkchina(dot)com

Tel: +86 755 83128674

Skype: elinkchina003

WhatsApp: +8613926522845

Application Diagram:

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