Overview
     The light transmission apparatus MDO-20E mini multi-service transmission equipment is manufactured based on our proprietary purpose-built integrated circuits. It integrates the traditional 2M E1, 10/100Base-Tx, in one equipment so that it can operate both high-speed digital service and traditional TDM service in one pair of Fiber.

Features
　◆ Favorable optic/electric specification provided by integral optic reception/transmission module
　◆ Offering 2E1 (2.048Mbps) interfaces
　◆ E1 Line code: compliant to G.703, E1 interface adopt digital phase locked and clock extracted technique 
　◆ Provide one 10/100M Ethernet port, compatible with IEEE 802.3 standard
　◆ 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.742、G.823
2、Optical Port
　Wavelength: 1310nm/1550nm (selectable)
    Transmitting power: -10dBm/-5dBm (order) 
    Receiving sensitivity: < -36 dBm BER <10-11) 
    Connector: FC/SC 
3、Ethernet Port
   Data rate：10/100Mbps
   Connector：RJ45
   Standard: comply with IEEE 802.3
4、Power supply Voltage: -48VDC or 220VAC±20%
5、Environment Working temperature: 0°C~50°C
6、Size: Standalone:200mm(W)×145mm(L)×45mm(H)
Typical Application
 
Order information
　　 MDO-20E           2E1+100M, 40Km, FC, 75 or 120ohm, Single mode
　　 MDO-20E-SSF 　2E1+100M, 40Km, FC, 75 or 120ohm, Single firber,Single mode
　　 MDO-10E           1E1+100M, 40Km, FC, 75 or 120ohm, Single mode