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M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3.15 SCU
3.15.1 Functions
The SCU is a transmitting unit of four carriers in one (4-in-1). It performs broadband
combining with 3 dB power loss bridge. The joint operation of the SCU and the CDU can
realize the combining transmitting of multicarriers. Then the number of CDU and the cost are
reduced.
The SCU supports the following frequency bands:
!
!
!
The maximum input power of its single port is 60 W.
3.15.2 Structure and Principle
Figure 3-33
Figure 3-33 SCU functional structure
3.15.3 Panel
Figure 3-34
Issue 01 (2006-11-18)
GSM900
GSM1800
GSM1900
shows the functional structure of the SCU.
SCU
1
Combiner
2
3
Combiner
4
shows the SCU panel.
Huawei Technologies Proprietary
Transmitting
Combiner
Output
3 Board
3-47
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