Ports on the Front Panel of the WGRU
The following describes the ports on the front panel of the WGRU. The ports consist of PPS1,
PPS2, COM1, COM2, CLK1, and CLK2.
Table 5-11 lists the ports.
Table 5-11 Ports on the front panel of the WGRU
Name Type Description
PPS1 RJ-45 It outputs PPS signals
PPS2 RJ-45 Obligate
COM1 RJ-45 It is used to transmit GPS
information and exchange
management and
maintenance information
with BBU.
COM2 RJ-45 Obligate
CLK1 RJ-45 Obligate
CLK2 RJ-45 Obligate
Ports on the Rear Panel
The rear panel of the WGRU consists of the POWER port and ANT port.
Table 5-12 describes the ports on the rear panel of the WGRU.
Table 5-12 Ports on the rear panel of the WGRU
Port Label
Connector Description
POWER Two-pole male connector Used to feed external power
ANT N-type female connector Used for the connection to
the GPS antenna system
5.8 SLPU
The signal lightning protection unit (SLPU), which can be optionally configured with the UFLP,
UELP, or USLP2, provides the signal surge protection.
5.8.1 Exterior of SLPU
The SLPU has a case structure, which requires a 19-inch wide and 1 U high space.
5.8.2 Configuration of the SLPU
This section describes the configuration principles of the SPLU.
5 Auxiliary Devices of the BBU3900
BBU3900
Hardware Description
5-18 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 11 (2010-11-10)
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