Uelp - Huawei BBU3900 Description

LTE TDD
BBU3900&BBU3910 Description
Table 1-9 Ports on the USCUb11/USCUb21
Label
GPS
RGPS
TOD0
TOD1
M-1PPS
BITS

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
INSIDE
OUTSIDE
Issue 01 (2018-02-05)
Connector Number of
Ports
SMA coaxial 1
PCB welded 1
wiring terminal
RJ45 1
RJ45 1
SMA coaxial 1
SMA coaxial 1
Connector Number of
Ports
DB25 1
DB26 1
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Description
Receives GPS signals
Receives RGPS signals
Receives or transmits 1PPS+TOD
signals
Receives or transmits 1PPS+TOD
signals, and receives TOD signals from
the Metro1000.
Receives 1PPS signals from the
Metro1000
Receives BITS clock signals, and
supports adaptive input of 2.048 MHz
and 10 MHz reference clocks
Description
Connects to an eNodeB transmission
board
Connects to an external transmission
1 Overview
12