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User Manual
Airbridge cBTS3612 CDMA Base Station
3) Interface
Fan box electrical interface
l
Power supply ports and serial port communication ports are provided for the two fan
boxes through MOLEX connectors.
System power supply interface
l
The interface leads in system power through big 3-pin connector.
System serial communication interface
l
External serial communication interface is provided through DB -15.
4) Index
The size of BFNB: 380mm%30mm.
2.3 RF Subsystem
2.3.1 Overview
The structure of RF subsystem is as shown in Figure 2-13.
BRDM
BRDM
BRDM
BRDM: Resource Distribution Module
CDU: Combining Duplexer Unit
Figure 2-13 Structure of RF subsystem
f1
BHPA
BTRM
f0
BHPA
BTRM
f2
BHPA
BTRM
BTRM: Transceiver Module
DFU: Duplexer Filter Unit
2-24
System Description
2 Hardware Architecture
To antenna &
feeder
DFU
To antenna &
feeder
CDU
RLDU
BHPA: High Power Amplifier Unit
RLDU: Receive LNA Distribution Unit
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