Huawei BTS3 Series Hardware Description Manual page 2

Contents
3.3.2 Structure and Principle.........................................................................................................................3-6
3.3.3 Front Panel...........................................................................................................................................3-7
3.3.4 Rear Panel ..........................................................................................................................................3-10
3.4 CMB............................................................................................................................................................3-14
3.5 ECDU..........................................................................................................................................................3-16
3.5.1 Functions............................................................................................................................................3-16
3.5.2 Structure and Principle.......................................................................................................................3-16
3.5.3 Front Panel.........................................................................................................................................3-17
3.5.4 Rear Panel ..........................................................................................................................................3-19
3.6 EDU ............................................................................................................................................................3-23
3.6.1 Functions............................................................................................................................................3-23
3.6.2 Structure and Principle.......................................................................................................................3-23
3.6.3 Front Panel.........................................................................................................................................3-24
3.6.4 Rear Panel ..........................................................................................................................................3-26
3.7 ESCU ..........................................................................................................................................................3-28
3.7.1 Functions............................................................................................................................................3-28
3.7.2 Panel...................................................................................................................................................3-29
3.8 FMU ............................................................................................................................................................3-30
3.8.1 Functions............................................................................................................................................3-30
3.8.2 DIP Switch .........................................................................................................................................3-30
3.9 MDU ...........................................................................................................................................................3-31
3.9.1 Structure and Principle.......................................................................................................................3-31
3.9.2 Panel...................................................................................................................................................3-32
3.10 O2TCB ......................................................................................................................................................3-34
3.10.1 Functions..........................................................................................................................................3-34
3.10.2 DIP Switch .......................................................................................................................................3-34
3.11 PBU ...........................................................................................................................................................3-37
3.11.1 Functions..........................................................................................................................................3-37
3.11.2 Structure and Principle .....................................................................................................................3-37
3.11.3 Panel.................................................................................................................................................3-39
3.12 PMU ..........................................................................................................................................................3-41
3.12.1 Functions..........................................................................................................................................3-41
3.12.2 Panel.................................................................................................................................................3-42
3.13 PSU ...........................................................................................................................................................3-43
3.13.1 Functions..........................................................................................................................................3-43
3.13.2 Panel.................................................................................................................................................3-43
3.14 PWB ..........................................................................................................................................................3-45
3.15 SCU...........................................................................................................................................................3-47
3.15.1 Functions..........................................................................................................................................3-47
3.15.2 Structure and Principle.....................................................................................................................3-47
3.15.3 Panel.................................................................................................................................................3-47
3.16 TCU...........................................................................................................................................................3-48
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M900/M1800 BTS3X Series Base Transceiver Station
Huawei Technologies Proprietary
Hardware Description Manual
Issue 01(2006-11-18)