Huawei BBU3900 - Electricity Safety

LTE TDD
BBU3900&BBU3910 Description
1 Overview
Issue 01 (2018-02-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
12
Table 1-9 Ports on the USCUb11/USCUb21
Label Connector Number of
Ports
Description
GPS SMA coaxial 1 Receives GPS signals
RGPS PCB welded
wiring terminal
1 Receives RGPS signals
TOD0 RJ45 1 Receives or transmits 1PPS+TOD
signals
TOD1 RJ45 1 Receives or transmits 1PPS+TOD
signals, and receives TOD signals from
the Metro1000.
M-1PPS SMA coaxial 1 Receives 1PPS signals from the
Metro1000
BITS SMA coaxial 1 Receives BITS clock signals, and
supports adaptive input of 2.048 MHz
and 10 MHz reference clocks
1.3.7 UELP
UELP is short for universal E1/T1 lightning protection unit. It provides surge protection for
E1/T1 and RGPS signals.
Panel
Figure 1-17 shows the panel of the UELP.
Figure 1-17 UELP panel
Ports
Table 1-10 shows the ports on the UELP.
Table 1-10 Ports on the UELP
Label Connector Number of
Ports
Description
INSIDE DB25 1 Connects to an eNodeB transmission
board
OUTSIDE DB26 1 Connects to an external transmission