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    8E1+4GE PDH Multiplexer

    8E1 + 4 GE Fiber Optical Multiplexer is a kind of fiber-optic communication device which can use fiber to transport 1~16 E1 signal in the meantime efficiently and can test the used E1 automatically. The flexible circuit test and the indication function has a simple single panel form, which provides 4 10M/100M/1000M Ethernet ports(optional) and a office phone port( optional), raising applied flexibility also in the meantime enlarge the utilization of the fiber optic.


    8E1+4GE PDH fiber optical Mux is a point-to-point optical transmission equipment developed based on ultra large scale integrated circuit. It has perfect alarm function, 1 channel digital service telephone and 4 channel GE Ethernet port. 8 channel Ethernet port set as switch and dividing VLAN as well. Ethernet transmission rate is 10/100/1000M auto adapted. The device's electronic part is total digital circuit, to assure working steady, low power consumption, high integration and easy maintain.



    (1) Based on self-independent knowledge circuit;

    (2)Veneer design;

    (2) Module style, wide dynamic detector;

    (3) Optical module adopt send-receive synchronous way;

    (4) Provide control remote alarm status;

    (5) E1 interface accord with G.703, adopt digital clock reset and flat lock technique;

    (6) Provide 8 channel E1 and 4 channel 1000M Ethernet transmission loading;

    (7) 8 channel Ethernet port set as switch, also can be divided VLAN;

    (8) Ethernet interface 10/100/1000M auto adapted;

    (9) 1 channel PCM digital service telephone (for option);

    (10) 2 channel RS232 for option;

    (11) Support 1+1 fiber optical interface backup;(optional)

    (12) Desktop device support independent SNMP, and link control (optional)

    (13) Support detecting optical signal loss caused by remote device's turn off or fiber's break down;

    (14) Inspect local device's temperature and voltage;

    (15) Inspect remote device's temperature and voltage and set temperature alarming value;

    (16) Transmission distance can reach 2~120km without relay;

    (17) Multiple power supply type for option: AC220V,DC-48V/DC24V etc;

    (18) DC48v/DC24v has no positive and negative difference;

    (19) Head end support chassis with multiple cards, 12 channel optical way for option, SNMP included.



      Fiber optical interface

      optical wavelength: 850/1310nm for multi-mode fiber, 1310/1550nm for single-mode fiber.

      optical interface: SC/FC/ST

      Fiber pinning: double and single for option

      transceiver module: >-6dBm

      optical receiver sensitivity<-36(BER<10-11 )

      receive range: >-30dB

      transmission distance: multi-mode 2 Km, single-mode 40 Km, single-mode 80 Km, single-mode 120 Km.

      Optical circuit coding: NRZ


      E1 interface  

      Interface Rate: 2.048Mbps+-50PPM

      Coding: HDB3

      Interface signal coding: ITU-T G.703

      E1 Interface: BNC 75Ω(unbalance), RJ45 120Ω(balance)

      Unbalanced coaxial cable connector: 75-2/3 coaxial cable adapted

      Interface character: match G.703

      Jitter tolerance: match G.742 and G.823.

      Input attenuation tolerance:0~6dBm


      Ethernet interface

      Interface Rate: 10/100/1000Mbps auto adapted, full/semi duplex auto adapted

      Interface character: match IEEE802.3, IEEE802.1 Q

      Mac address: can learn 4096 MAC addresses

      Connector: RJ45, Auto-MDIX



    485 mmL×140 mmW× 44 mmH


    Power supply

    AC220V: input voltage AC 180V260V

    DC-48V: input voltage -36V-72V


    Operation Condition

    Voltage: AC180V ~ 260V; DC –48V; DC +24V

    Consumption: ≤5W

    Operating temperature: 0°C~50°C

    Storing temperature: -40°C~+70°C

    Relative humidity: 95 %

    Without disturbance of erosive and solvent gas, raising dust or strong magnetic field

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