Ports
Table 5-15 lists the ports of the UELP.
Table 5-15 Ports of the UELP
Label Connector Description
INSIDE DB25 connector Connected to the board for
transmission in the base station
OUTSIDE DB26 connector Connected to the external
transmission devices
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. Figure 5-17 shows the DIP switch on the UELP.
Figure 5-17 DIP switch on the UELP
Table 5-16 describes the DIP switch on the UELP.
BBU3900
Hardware Description 5 Auxiliary Devices of the BBU3900
Issue 11 (2010-11-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5-21
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