3 Board
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3-20
Huawei Technologies Proprietary
Issue 01 (2006-11-18)
Figure 3-14
ECDU (type A) rear panel
TTA M
OFF
FUSE
TTA D
ON
TMA M: TMA power feeding switch of main receiving channel (100 mA)
TMA D: TMA power feeding switch of diversity receiving channel (100 mA)
FUSE: fuse (2A)
ECDU (type B)
shows the ECDU (type B) rear panel.