3 Board
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3-8
Huawei Technologies Proprietary
Issue 01 (2006-11-18)
Figure 3-5
CDU 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
CDU
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
CDU
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_OUT
HL_IN
RX8
RX7
RX6
RX5
RXD_TEST
HL_OUT
RX4
RX3
RX2
POWER
VSWR1
VSWR2
TTA
LNA
TX1
TX2
CDU_BUS
DC-IN
+26V
TX_COM
TX_DUP
CDU
RX1
RXM_TEST
The indicators and port labels on various CDU front panels have the same meanings.
lists detailed information about indicators on CDU front panel.
Table 3-4
CDU indicators
ID
Color
Meaning
Indication
POWER
Green
Power supply indicator
ON: CDU is powered on.
OFF: CDU is powered off.
VSWR1
Yellow
Level 1 VSWR alarm
indicator
OFF: No alarm
ON or flashing: Level 1 VSWR
alarm
VSWR2
Red
Level 2 VSWR alarm
indicator
OFF: No alarm
ON or flashing: Level 2 VSWR
alarm
TMA
Red
Tower amplifier warning
indicator
OFF: No alarm
ON: TMA alarm