Overview
     The light transmission apparatus MDO-DF240E 1+1 dual optical ports multi-service transmission equipment is manufactured based on our proprietary purpose-built integrated circuits. It integrates the traditional 2M E1, 10/100Base-Tx (max bandwidth: 100M), in one equipment so that it can operate both high-speed digital service and traditional TDM service in one pair of Fiber. The advanced dual-light-beam switching and restoration mechanism enables the equipment to achieve 1+1 protection for MDO-DF240E transmission equipment can also provide centralized rack structure for easy maintenance as well as plug and play, and at the same time, provide complete network management function.

Features
　◆ Favorable optic/electric specification provided by integral optic reception/transmission module,dual optical ports
　◆ Offering 8E1 (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
　◆ An official phone interface is optional, not occupy E1 channel
　◆ Offering an asynchronous data-transmitting 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.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:483mm(W)×175mm(L)×45mm(H)
Typical Application
 

Order information
　　 MDO-DF240E     8E1+100M, 40Km, FC, 75 or 120ohm,Dual optical ports
　　 MDO-DF240E-SSF 　8E1+100M, 40Km, FC, 75 or 120ohm, Single fiber,Single mode, Dual optical ports
　　 MDO-DF120E     4E1+100M, 40Km, FC, 75 or 120ohm,Dual optical ports
　　 MDO-Df480E     16E1+100M, 40Km, FC, 75 or 120ohm, Dual optical ports