l
Multiplexes the RX and TX signals of the RF channels.
l
Enables the TX and RX signals to share the same antenna channel.
l
Filters the RX and TX signals.
LEDs
There are six LEDs on the panel of the DRFU, indicating its operating status.
describes the status of the LEDs on the DRFU.
Table 4-48
Status of the LEDs on the DRFU
LED
Color
State
Meaning
RUN
Green
On
There is power supply, but the module
is faulty.
On for 1s and off for 1s The module is functional.
On for 0.125s and off
for 0.125s
The module is loading software or is not
started.
Off
There is no power supply, or the module
is faulty.
ALM
Red
On
Alarms are generated, and the module
needs to be replaced.
On for 1s and off for 1s Alarms are reported. The alarms may
be caused by the faults of the related
boards or ports. Therefore, whether the
module needs to be replaced cannot be
decided.
Off
No alarm is generated.
ACT
Green
On
The board works properly with the TX
channel enabled.
On for 1s and off for 1s The module works properly with the
TX channel disabled.
VSWR
Red
On
The VSWR alarm is generated on the
ANT1 port.
On for 1s and off for 1s The VSWR alarm is generated on the
ANT2 port.
On for 0.125s and off
for 0.125s
The VSWR alarm is generated on the
ANT1 and ANT2 ports.
Off
No VSWR alarm is reported.
CPRI0
Red/Green
Steady green
The CPRI link is functional.
Steady red
The optical module fails to receive
signals.
BTS3900
Hardware Description
4 BTS3900 Components
Issue 04 (2011-02-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4-47