User Manual
Airbridge cBTS3612 CDMA Base Station
System Description
5 System Configuration
5-11
l
2 unipolarization directional antennas or 1 bipolarization directional antenna for
each sector.
l
The configuration of the RF modules is shown in Figure 5-9.
l
Logic connection of RF modules of one-sector is shown in Figure 5-10.
C
D
U
RLDU
C
D
U
C
D
U
RLDU
RLDU
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
sector0
sector2
sector1
D
F
U
D
F
U
D
F
U
Figure 5-9
S(2/2/2) RF configuration
&
Note:
The CDU frequency is not adjustable. The carrier channel number of its upper corresponding subrack
is higher and the carrier channel number of its lower corresponding subrack is lower. In the actual
configuration, the specific carrier module slot should be determined by the specific CDU channel
numbers.
For example: When the 160&260-combining CDU is adopted, if the channel number assigned to this
CDU is only 260, the carrier module should be configured in the upper subrack. If the channel number
assigned to this CDU is only 160, the carrier module should be configured in the low er subrack.
