Table 2-14 Pin assignment for the wires of the AISG multi-wire cable
X1 End X2 End Wire Type Remarks
X1.1 X2.1 Twisted pair +12 V
X1.7 X2.7 Twisted pair DC-GND
X1.9 AISG_Switch
X1.3 X2.3 Twisted pair RS485 -
X1.5 X2.5 RS485 +
Installation Position
If only the RRU is installed, the waterproof DB9 connector is linked to the RET/PWR_SRXU
port at the bottom of the RRU, and the standard AISG female connector is linked to the
corresponding connector on the RCU or to the AISG extension cable.
If both the RRU and the SRXU are installed, the waterproof DB9 connector is linked to the RET
port at the bottom of the SRXU, and the standard AISG female connector is linked to the
corresponding connector on the RCU or to the AISG extension cable.
2.4.4 AISG Extension Cable of the RRU/SRXU
When the distance between the RCU and the RRU/SRXU is longer than 5 m, the AISG multi-
wire cable is not long enough to cover the distance. In this case, the AISG extension cable is
used. The AISG extension cable is 15 m long.
Appearance
The cable has a standard AISG male connector at one end and a standard AISG female connector
at the other end, as shown in Figure 2-18.
Figure 2-18 AISG extension cable
Pin Assignment
Table 2-15 describes the pin assignment for the wires of the AISG extension cable.
2 RRU and SRXU Hardware
RRU
User Guide
2-22 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
Issue 01 (2008-04-18)
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