Huawei AAU3902 Hardware Description page 33

AAU3902
Hardware Description
Selection Principle
The following table describes the principles for selecting CPRI fiber optic cables.
Table 3-3 Principles for selecting CPRI fiber optic cables
Remote
Distance
≤ 100 m
(328.08 ft)
Longer than
100 m (328.08
ft) and shorter
than or equal
to 150 m
(492.12 ft)
Greater than
150 m (492.12
ft)
Pin Assignment
The following table describes the labels on breakout cables of a CPRI fiber optic cable and
recommended connections of the breakout cables.
Table 3-4 Labels on and recommended connections for the breakout cables of a CPRI fiber optic
cable
Label
1A
1B
2A
Issue 06 (2014-07-30)
Selection Principle
Multimode fiber optic cable
Multimode fiber optic cable
Recommended: single-mode
fiber optic cable (single-mode
pigtail and trunk single-mode
optical fiber)
Single-mode fiber optic cable
(single-mode pigtail and trunk
single-mode fiber optic cable)
Installation Position
Multimode Fiber
Optic Cable
Between a BBU
and an AAU
CPRI RX port on the
AAU
CPRI TX port on the
AAU
TX port on the BBU
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Remarks
Connects the BBU and AAU
When it connects two AAUs, the distance
between the two AAUs must be shorter than
or equal to 10 m (32.81 ft).
Connects the BBU and AAU
The single-mode pigtail on the AAU or
BBU side is connected to the trunk single-
mode fiber optic cable using the ODF.
Multimode Fiber
Optic Cable
Between Two
AAUs
CPRI RX port on
AAU 1
CPRI TX port on
AAU 1
CPRI TX port on
AAU 0
3 AAU Cables
Single-mode Pigtail
(Transited by the
ODF)
RX port on the BBU or
CPRI RX port on the
AAU
TX port on the BBU or
CPRI TX port on the
AAU
ODF
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