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E1 Fiber Modem

E3/DS3/STS-1 Fiber Modem

The function of E3/DS3/STS-1 optical fiber MODEM is to directly modulate E3/DS3/STS-1 data signal to single-mode or multi-mode optical fiber with a transmission rate of E3(34.368Mbps±20ppm)/DS3(44.736Mbps±20ppm)/STS-1(51.84Mbps±20ppm) which can be used as a channel for E3/DS3/STS-1 data.
◆ based on self -copyright  IC; 
◆ Integrated Transmitter Receiver and Jitter Attenuator for DS3 E3 and STS-1; 
◆ Provide two fiber interface 1+1 protect(APS)functionone is Main fiber portthe other is back-up port(Optional);
◆ Provide 75 Ω unbalance coaxial cableB3ZS/HDB3 decoding and loss-of-signal monitoring;
◆ After strict testing and practical verification system completely comply with protocol ITU-T G.703 G.751;
◆ Have three Loop Back Mode: Fiber interface Loop Back (ANA)、E1 interface Loop Back(DIG)、Command the remote E1 interface Loop Back(REM);
◆ Have pseudo random code test function easily line opened can be used as a BER Tester;
◆ AC 220V DC-48V DC+24V DC Power and DC-48V/DC24V power has polarity automatic detection function you can install the device without differentiation between positive and negative polarity.
Optical port:1 2(1+1)
Optical Fiber:Single/Dual fiber
Fiber interface:FC/SC/ST/LC(SFP)
Wavelength:850nm/1310nm Multimode;1310nm/1550nm Single mode
Relay-free transmission distance: 20~120Km
Typical transmit power: 
Single mode1310/1550nm:≥-9dB
Multimode1310nm: -25dBm
Receive sensitivity range:-28dBm~- 40dBm
Physical Interface: RJ45 Support Auto-MDIX
E3/DS3/STS-1  interface   
Standard:      Conform to ITU-T G.703 G.751
Code rate:     E3(34.368Mbps±20ppm)
Code type:     B3ZS(DS3STS-1)/HDB3(E3)        
Impendence:  75Ω(unbalance)
Connector:   BNC(unbalance)
Cable at Lengths: 75 Coaxial Cable Up to 380m (DS3) 440m (E3) or 360m (STS-1) 
Working environment   
Operating temperature:-10℃—+60℃ 
Storage temperature:  -40℃—+85℃
Working humidity: 0%—95% (No condensation)
MTBF:>100000 hour
E3/DS3/STS-1 Fiber Modem