4*RS232/RS422/RS485 fiber modem for ring network

• Based on proprietary integrated circuit;
•  Provide 1-4 independent serial ports (RS232 / 422/485 optional) channel, physical isolation from each other,  there is no correspondence between the
•  provide two fiber optic lines, it can automatically switch when the line failure, ensuring communication is normal.
•  support a variety of fiber-optic network structure: point to point, star, chain, ring redundancy, and can be combined into more complex network topologies to support a variety of fiber optic network architecture:  Point, star, chain, ring redundancy, and can be combined into more complex network topologies to support a variety of fiber-optic network structure: point to point, star, chain, ring redundancy, Can be combined into more complex network topologies
•  electrical interface uses a separate power supply module, completely isolated from the ground loop between the bus and the device; while using optical isolation technology, isolation and internal communications bus data signal, Effective protection of the communication equipment from power surges and ground loop interference and sabotage 
•  RS232 / 485/422 interface, optional three data, RS232 supports 3-wire RS232 (TXD, RXD, GND), flow control support CD, DSR, CTS,
•  RS232 / 485/422 channels can be transmitted from 0-115200 baud asynchronous serial data adaptive
•  serial port interface lightning reach IEC61000-4-5 (8 / 20μS) differential mode: 6KV, impedance (2Ω); Common mode: 6KV, impedance (2Ω) standard
•  optional AC 220V, DC -48V, DC + 24V, DC power no positive and negative points;

  Fiber
         Multi-mode Fiber
    50/125um, 62.5/125um,
    Maximum transmission distance: 5Km @ 62.5 / 125um single mode fiber, attenuation (3dbm/km)Wave Length: 820nm
    Transmitting power: -12dBm (Min) ~-9dBm (Max)
    Receiver sensitivity: -28dBm (Min)
    Link budget: 16dBm
        Single-mode Fiber
    8/125um, 9/125um
    Maximum transmission distance: 40Km
    Transmission distance: 40Km @ 9 / 125um single mode fiber, attenuation (0.35dbm/km)
    Wave Length: 1310nm
    Transmitting power: -9dBm (Min) ~-8dBm (Max)
    Receiver sensitivity: -27dBm (Min)

    Link budget: 18dBm

  RS232/422/485  interface 
    Rate: 0-115200Kbps
    Interface characteristics: EIA RS232 RS422 RS485

    Connector: Phoenix terminal

   Power
    Power supply: AC180V ~ 260V；DC –48V；DC +24V

    Power consumption: ≤10W

   Dimension          
    Product Size:         133X120X40mm(WXDXH)                

    Piece Weight :      0.685KG

 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)