Shenzhen JHA Technology Co., Ltd is one of the leading manufacturers of hardened Ethernet, PoE, and fiber connectivity products specifically designed for harsh and demanding environments.


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Co-Directional 64K Converter JHA-CE1tV1

    • Based on self -copyright IC;
    • Provide 2 clock types: Co-Directional G.703 master clock and G.703 line clock;
    • Have two Loop Back Mode: G.703 interface Loop Back , V.35 interface Loop Back;
    • Have pseudo random code test function, easy for installation;
    • Support 120 Ohm balance;
    • V.35 interface supports hot-plug;
    • Provide 3 clock types: Internal clock, External clock,E1 line clock;
    • AC 220V, DC-48V, DC+24V, DC Power and Polarity-Free.


PDH/Voice Multiplexer

Interface converters

Co-Directional 64K Converter

  • Co-Directional 64K-V.35 Converter JHA-CE1tV1


    The G.703 (Co-Directional G.703) interface divides 64Kbps cycle into 4 unit intervals, it uses“0101” represent  “0”, “1100” represent “1″. By alternating transformation polarity of the adjacent block, binary signals convert three-level signals. In every 8th group destroyed block of alternating polarity, thus to transmit 8KHz timing signal. By the above coding, G.703 co-directional 64Kbps signal could achieve transmitting the timing signal of 64KHz and 8KHz and 64KHz and the data signal of 64Kbit/s in the same direction with a pair balanced line.
       64k-V.35 / V.24 interface converter provides ITU-T co-64K G.703 standard E1 interface and standard V.35 conversion interface between the physical layer / V.24. Network to provide secure communications between devices of different interfaces, the seamless connection. Equipment E1 channel section applies to transmission equipment slots available, and the need to transfer data to and only V35 / V24 export of the occasion, the data interface mode is DCE, with DTE or DCE device docking.

    Product Photo

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                             Mini  Type



    ♦ Co-Directional G.703 Interface  

    Interface Standard: comply with protocol ITU-T G.703;

    Interface Rate: 64Kbps±50ppm;

    E1 Impedance: 120Ω (balance);

    Jitter tolerance: In accord with protocol G.742 and G.823

    Maximum Transmission Distance: up to 500m


    ♦  V.35/V.24 interface 

    Interface rate: 64Kbps
    Interface Standard:    Compatible with V.35/V.24 standard

    Connector:    DB25

    Connect Mode:    DCE

    Clock Type: G.703 internal clock, external clock


    ♦ Working environment

    Working temperature:    -10°C ~ 50°C

    Working Humidity:    5%~95 % (no condensation)

    Storage temperature: -40°C ~ 80°C

    Storage Humidity: 5%~95 % (no condensation)



    Model Model Number: JHA-CE1tV1
    Functional Description Co-Directional 64K-V.35 Converter, V.35 rate 64K
    Port Description One Co-Directional 64K interfaces, one V.35 interface
    Power Power supply: AC180V ~ 260V;DC –48V;DC +24VPower consumption: ≤10W
    Dimension Product Size:  216X140X31mm (WXDXH)
    Weight 1.2KG



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