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BTS3900
Hardware Description
Label
Port
Table 4-25
Table 4-25 Ports on the LBBP
Label
CPRI0 to CPRI5
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
Issue 04 (2011-02-15)
Color
describes the ports on the panel of the LBBP.
Connector
SFP female
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Copyright © Huawei Technologies Co., Ltd.
4 BTS3900 Components
Status
Blinking red (on for
1s and off for 1s)
Off
Quantity
6
Figure 4-15
Description
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).
The SFP module is not
in position or the
optical module is
powered off.
Description
The CPRI ports
connect to the
LRRUs or LRFUs
for transmitting
service data, clock
signals, and
synchronization
information
and
Figure
4-16.
4-23
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