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User Manual
Airbridge cBTS3612 CDMA Base Station
3) Interface
Power interface
l
It is used to lead in working power for BFMM.
Communication serial port 0, 1
l
Serial port communication ports 0 and 1 provide access for system active/standby
serial port. When the system has only one serial port, only port 0 is used.
LED indicator driving output interface
l
This is the driving interface for LED status indicator on the panel of the fan box.
Fan unit driving interface
l
Maximally 6 such interfaces are provided. They also serve as the interfaces for
fan-in-position detection and fan blocked detection.
4) Index
The size of BFMM: 280mm%35mm.
+27V power supply, power consumption <5W.
II. BTS Fan block iNterface Board (BFNB)
1) Overview
BFNB provides electrical connection between the fan box and the system. On one
hand, it provides blind mate interface for the fan box. On the other hand, it provides
the system with power interface and serial communication interface.
2) Structure and principle
BFNB's position is shown in Figure 2-10.
BFNB implements interface conversion function. Refer to "3) Interface" for the
definition of interface.
BFNB's structure is shown in Figure 2-12.
(1) MOLEX connector
Figure 2-12 Illustration of BFNB structure
(2) Large 3PIN power socket
2-23
System Description
2 Hardware Architecture
(3) DB-15 signal socket
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