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User Manual
4
Chapter 2
Technical Specifications
2.1 Technical specifications of E1 interface
¾
Bit rate: 2048Kbps
±
50ppm
¾
Coding: HDB3
¾
Interface type: BNC, RJ-45
¾
Interface impedance: 75
Ω
unbalanced interface, 120
Ω
balanced interface
¾
Physical characteristic: comply with ITU-T G.703 recommendations
¾
Transfer characteristic: comply with ITU-T G.823 recommendations
¾
Jitter tolerance: comply with ITU-T G.823 recommendations
2.2 Technical specifications of the optical interface
¾
Bit rate: 150Mbps
¾
Line coding: scrambled NRZ
¾
Interface type: SC interface (FC interface made to order)
¾
Optical transmission parameter: different optical transceivers have different optical interface
parameters, please see the table below.
Optical
transceiver
Wavelength
(nm)
Transmitting
Optical
Power (dBm)
Overload
(dBm)
Extinction
Ratio (dB)
Receiving
Sensibility
(dBm)
Transmission
Distance
(Km)
M
1310
-20 ~ -14
> -14
> 8.2
< -28
0 ~ 2
S1
1310
-15 ~ -8
> -8
> 8.2
< -34
0 ~ 25
S2
1310
-5 ~ 0
> -8
> 8.2
< -34
10 ~ 60
S3
1550
-5 ~ 0
> -10
> 10
< -36
15 ~ 120
SS13
1310
-12 ~ -3
> -8
> 8.2
< -30
0 ~ 25
SS15
1550
-12 ~ -3
> -8
> 8.2
< -30
0 ~ 25
SS23
1310
-5 ~ 0
> -8
> 8.2
< -32
10 ~ 50
SS25
1550
-5 ~ 0
> -8
> 8.2
< -32
10 ~ 50
L
Note:
The transmission distance in the table indicates the maximal transmission distance in typical optical
fiber condition. The transmission distance that can be realized depends on the factual status of the network.
2.3 The properties of the Agent network management interface
¾
Interface type: RJ-45
¾
Standard Compliance: RS232
