Figure 3-16 Ecdu (Type C) Rear Panel; Table 3-13 Mapping Between The Knob Setting And Current Strength Of The Tma (Type C) - Huawei BTS3 Series Hardware Description Manual

3 Board

Figure 3-16 ECDU (type C) rear panel

TMA M: Main receiving TMA knob
FUSE: Fuse (2A)
Two knobs shown in
supply.
Table 3-13

Table 3-13 Mapping between the knob setting and current strength of the TMA (type C)

Setting
0
1
2
3
3-22
FUSE
TTA-M
0
TTA-D
0
Figure 3-16
shows the mapping between the knob setting and the TMA current.
TMA M
OFF
100
107
205
Huawei Technologies Proprietary
M900/M1800 BTS3X Series Base Transceiver Station
TMA D: Diversity receiving TMA knob
–
are used to control the current strength of the TMA power
TMA D
OFF
65
100
205
Hardware Description Manual
Unit
–
mA
mA
mA
Issue 01 (2006-11-18)