Huawei Airbridge cBTS3612-1900, Руководство пользователя

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User Manual
Airbridge cBTS3612 CDMA Base Station System Description
2 Hardware Architecture
2-18
l
Leads in system power and provides distributed power to all boards.
l
Leads in the signal monitoring line for fan subrack and power subrack.
l
Provides protection against misplug.
II. Structure
Functional units in CBKM are as shown in Figure 2-8.
0
B
C
I
M
1
B
C
I
M
2
B
C
P
M
3
B
C
P
M
4
B
C
P
M
5
B
C
P
M
6
B
C
P
M
7
B
C
P
M
8
B
R
D
M B
R
D
M B
C
K
M B
C
K
M B
R
D
M B
R
D
M B
C
P
M B
C
P
M B
C
P
M B
C
P
M B
C
P
M B
C
P
M B
R
D
M B
R
D
M
10 11 12 13 14 15 16 17 18 19 20 21 9
Figure 2-8 Functional units of all slots in CBKM
A backplane includes the connector and board slot.
Connector part includes a slot for test board, input connector of bac27V
power/ground, and 3 DB37 D-connectors. Power input connector, D-connector are
all crimped devices.
Slots of the backplane are defined as follows:
l
Slots 0~1 are for BCIMs.
l
Sots 10~11 are for BCKMs.
l
Slots 8~9, 12~ 13, 20~21 are for BRDMs.
l
Slots 2~7, 14~ 19 are for BCPMs.
III. Interface
The interfaces between the backplane and external devices include:
l
System power interface
l
Remote maintenance serial port
l
Environment alarm interface
l
Fan alarm serial port in baseband subrack
l
System external synchronization interface
l
16 E1 interfaces
IV. Index
CBKM size: 664mm
%
262mm.