Pin Assignment
,
, and
describe the labels and recommended connections for
the branch cables of the CRPI optical cable.
Table 3-9
Labels and recommended connections for the branch cables of the multi-mode optical
cable between the BBU and RRU
Label
Color
Installation Position
1A
Orange
CPRI RX port on the RRU
1B
Gray
CPRI TX port on the RRU
2A
Orange
TX port on the BBU
2B
Gray
RX port on the BBU
Table 3-10
Labels and recommended connections for the branch cables of the multi-mode
optical cable between RRUs
Label
Color
Installation Position
1A
Orange
CPRI RX port on the RRU 1
1B
Gray
CPRI TX port on the RRU 1
2A
Orange
CPRI TX port on the RRU 0
2B
Gray
CPRI RX port on the RRU 0
Table 3-11
Labels and recommended connections for the branch cables of the single-mode
optical cable and recommended connections
Label
Color
Installation Position
1A
Yellow
RX port on the BBU or CPRI RX port
on the RRU
1B
Blue
TX port on the BBU or CPRI TX port on
the RRU
2A
Yellow
ODF
2B
Blue
ODF
3.7 Alarm Cable for the DC RRU
The alarm cable for the RRU is a shielded straight-through cable. The cable transmits alarm
signals from the external equipment to the DC RRU and monitors the external equipment.
RRU3908 V2
Hardware Description
3 RRU Cables
Issue 02 (2010-10-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3-11