Uelp - Huawei BTS3900C Hardware Description

BTS3900C (Ver.C)
Hardware Description
Table 3-80 Specifications of the CPRI ports on the UBRI
Board
UBRI

3.1.17 UELP

Each universal E1/T1 lightning protection unit (UELP) provides surge protection for four paths
of E1/T1 signals.
Panel
Figure 3-48
Figure 3-48 UELP panel
Ports
Table 3-81
Table 3-81 Ports on the UELP
Silkscreen
INSIDE
OUTSIDE
DIP Switch
The UELP has one DIP switch, which is used to determine whether the receiving end is grounded.
The DIP switch has four DIP bits.
Issue 03 (2013-05-27)
CPRI Port
Quantity
6
shows the panel of the UELP.
lists the ports on the UELP.
Connector
DB25 female connector
DB26 female connector
Figure 3-49
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
CPRI Port Data
Rate (Gbit/s)
1.25/2.5
Description
Connecting to a transmission
board of the base station
Connecting to an external
transmission device
shows the DIP switch on the UELP.
3 BTS3900C Modules
Topology Type
Star, chain, and ring
topologies
89