M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3 Board
Issue 01 (2006-11-18)
Huawei Technologies Proprietary
3-17
Figure 3-12
ECDU structure
Combiner
Duplexer
LNA
Filter
TX1
TX2
TX-COM
TX-DUP
Divider
RX1~4
RX5~8
HL-OUT
HL-IN
RXD-OUT
TX/RX-ANT
RXD_ANT
Divider
LNA
3.5.3 Front Panel
shows multiple types of ECDU front panels.
Figure 3-13
ECDU front panel
TX/RX_ANT
RXD_ANT
MS/TX_TEST
RXD_TEST
POWER
VSWR1
VSWR2
TTA
LNA
TX1
TX2
CDU_BUS
DC-IN -26V
TX_DUP
TX_COM
ECDU
RXD_OUT
HL_IN
RX8
RX7
RX6
RX5
HL_OUT
RX4
RX3
RX2
RX1
RXM_TEST
TX/RX_ANT
RXD_ANT
MS/TX_TEST
RXD
_TEST
POWER
VSWR1
VSWR2
TTA
LNA
TX1
TX2
CDU_BUS
DC-IN
+26V
TX_DUP
TX_COM
ECDU
RXD_OUT
HL_IN
RX8
RX7
RX6
RX5
HL_OUT
RX4
RX3
RX2
RX1
RXM
_TEST
TX/RX_ANT
RXD_ANT
MS/TX_TEST
POWER
VSWR1
VSWR2
TTA
LNA
TX1
TX2
CDU_BUS
DC-IN
-26V
TX_COM
TX_DUP
ECDU
RXD_OUT
HL_IN
RX8
RX7
RX6
RX5
HL_OUT
RX4
RX3
RX2
RX1
RXD
_TEST
RXM
_TEST