Raisecom
Gazelle ST2028i (A) Hardware Description
5 Interface and module parameters
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
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Parameter
Value
Cable specifications
50 Ω coaxial cable
5.1.9 GPS input interface
Table 5-13 lists specifications of the GPS input interface.
Table 5-13
Specifications of the GPS input interface
Parameter
Value
Connector type
BNC (female) connector
Carrier frequency
1.575 GHz
Output impedance
50 Ω
Cable specifications
50 Ω coaxial cable
5.2 Service interface module parameters
All modules support the RoHS standard and DDM.
5.2.1 1000 Mbit/s optical module
Dual-fiber bidirectional optical module (LC/PC)
Table 5-14
Parameters of the 1000 Mbit/s dual-fiber bidirectional optical module
Model
Tx
wavel
ength
(nm)
Rx
wavel
ength
(nm)
Tx
optical
power
(dBm)
Minimum
overload
point
(dBm)
Extinction
ratio (dB)
Sensitivity
(EOL)
(dBm)
Mode Transmis
sion
distance
(km)
USFP-
Gb/M-I
850
830–
870
-9.5 to -3 0
9
-17
Multi-
mode
0.55
USFP-
Gb/S1-I
1310
1260–
1620
-10 to -3
-3
9
-21
Single-
mode
15
USFP-
Gb/S2-I
1310
1260–
1620
-2 to 3
-3
9
-21
Single-
mode
40
USFP-
Gb/S3-I
1550
1260–
1620
0 to 5
-3
9
-22
Single-
mode
80