Label
Color
Status
Description
Blinking red (on for
1s and off for 1s)
The CPRI link is out
of lock (The fault may
be caused by mutual
lock of dual-mode
clock sources or
mismatched data rate
over CPRI interfaces,
and you are advised to
check the system
configuration) or the
VSWR alarm is
reported on the RRUs
in the CPRI link
(because the USB
storage disk is under
test).
Off
The SFP module is not
in position or the
optical module is
powered off.
Port
describes the ports on the panel of the LBBP.
Table 4-25
Ports on the LBBP
Label
Connector
Quantity
Description
CPRI0 to CPRI5
SFP female
6
The CPRI ports
connect to the
LRRUs or LRFUs
for transmitting
service data, clock
signals, and
synchronization
information
FAN
The FAN unit for the BBU3900 controls the speed of fans and monitors the temperature of the
fan unit. It reports the status of the fans and fan unit, and dissipates heat from the BBU.
Panels
The FAN unit has two types of exterior, which are shown in
BTS3900
Hardware Description
4 BTS3900 Components
Issue 04 (2011-02-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4-23