Table 3-53 LBBP ports
Silkscreen Connector Quantity Description
CPRI0 to CPRI5 SFP female
connector
6 Connected to the RF
modules for
transmitting service
data, clock signals,
and synchronization
information.
Table 3-54 describes the QSFP port on the LBBPd panel.
Table 3-54 QSFP port on the LBBPd panel
Silkscreen Connector Quantity Description
HEI QSFP connector 1 Reserved
3.1.11 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.
Panel
The FAN units fall into two types: FAN and FANc, as shown in Figure 3-29 and Figure 3-30.
Figure 3-29 FAN
BTS3900C (Ver.C)
Hardware Description 3 BTS3900C Modules
Issue 03 (2013-05-27) Huawei Proprietary and Confidential
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