Overview
     MDO-120T series PDH (Plesiochronous Digital Hierarchy) which was used in exchanger for long distance transmission, and platform of mobile telecommunication, pager transmission station ect., which was used in mini-medium column and point to point products with fiber supporting, the equipment adopted powerful function and expert digital repeating-connection chips which integrated all digital and logical function in the equipment so that improved the performance and reduced the cost of products, the completed-equipment with good performance, stable operation, low loss, strong integration capacity, small bulk, easy installation and maintenance.

Features
　◆ Favorable optic/electric specification provided by integral optic reception/transmission module
　◆ Offering 4E1 (2.048Mbps) interfaces
　◆ E1 Line code: compliant to G.703, E1 interface adopt digital phase locked and clock extracted technique 
　◆ An official phone interface is optional, not occupy E1 channel
　◆ Offering an asynchronous data-transmitting RS232 interface and a management RS232 interface
　◆ Perfect alarm function display remote status
   ◆ up to 120Km distance without repeater
　◆ Complete alarming function
　◆ Single-board architecture design

Specifications
1、E1 Port
　Compliance with ITU-T G.703 
    Data rate: 2.048Mbps 
    Impedance: 75ohm(BNC)/120ohm(BLANCE) 
    Line Code: HDB3
    Frequency deflection: 2.048MHz ±100PPM　 
    Jittering: compliance with ITU-T G.823
2、Optical Port
　Wavelength: 1310nm/1550nm (selectable)
    Transmitting power: -10dBm/-5dBm (order) 
    Receiving sensitivity: < -36 dBm BER <10-11) 
    Connector: FC 

Typical Application
 

Order information
　　 MDO-120T 　       4E1, 40Km, FC, 75&120ohm, Single mode
　　 MDO-240T-SSF 　4E1, 40Km, FC, 75&120ohm, Single fiber,Single mode