Figure 4-13 Multi-Mode Optical Cable; Figure 4-14 The Connections Of The Multi-Mode Cpri Optical Fiber - Huawei BBU3900 Hardware Description

BBU3900
Hardware Description
optical cable is required. When the distance between the BBU and the RRU is longer than 100
m, a single-mode optical cable is required. A single-mode optical cable connects the BBU to the
ODF and the ODF to the RRU to transmit CPRI signals.
A multi-mode optical cable is a multi-mode cable with a DLC connector at each end.
4-13

Figure 4-13 Multi-mode optical cable

(1) DLC connector
Figure 4-14
when the multi-mode CPRI optical fiber is used.

Figure 4-14 The connections of the multi-mode CPRI optical fiber

(1) Multi-mode CPRI optical fiber
When a multi-mode optical cable is used for connection between the BBU and RRU, the branch
cables on the BBU side and RRU side are 0.34 m and 0.03 m long respectively. When a multi-
mode optical cable is used for connection between RRUs, the branch cables on both RRU sides
are 0.03 m long.
A single-mode optical cable has a DLC connector at one end and two FC connectors at the other
end, as shown in
Issue 11 (2010-11-10)
shows the multi-mode optical cable.
(2) Branch cable
shows the connections of the CPRI optical fiber between the BBU and the RRU
Figure 4-15.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
(3) Label on the branch cable
4 BBU3900 Cables
Figure
4-15