3.10 AISG Multi-Wire Cable for the RRU
The AISG multi-wire cable is 5 m long. It is connected to the RRU and Remote Control Unit
(RCU) to transfer control signals from the base station to the RET antenna.
NOTE
The RCU is a driving motor used for the phase shifter in the RET antenna. It receives the control commands
from the base station and executes the commands to drive the step motor, which drives the phase shifter in the
antenna through the gearing to adjust the tilt angle of the antenna.
Exterior
The AISG multi-wire cable has a DB9 waterproof connector at one end and an AISG standard
female connector at the other end, as shown in
Figure 3-13
AISG multi-wire cable
Pin Assignment
describes the pin assignment for the wires of the AISG multi-wire cable.
Table 3-13
Pin assignment for the wires of the AISG multi-wire cable
X1 End (Pin of
the DB9
Waterproof
Connector)
X2 End (Pin of the
Standard AISG
Female
Connector)
Wire Color
Wire Type
Pin
Assignment
X1.1
X2.1
White and blue
Twisted pair +12V
blue
X1.3
X2.3
White and
orange
Twisted pair
RS485 B
X1.5
X2.5
orange
RS485 A
X1.4
X2.4
White and
green
-
RS485 GND
3 RRU Cables
RRU3908 V2
Hardware Description
3-14
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 02 (2010-10-25)