Table 2-12
Pin assignment for the wires of the alarm cable
X1 End
Cord End
Terminal
Wire Color
Wire Type
Label
X1.2
X2
White and
blue
Twisted pair
SWITCH
X1.3
X3
Blue
GND
X1.6
X4
White and
orange
Twisted pair
SWITCH
X1.7
X5
Orange
GND
X1.10
X6
White and
green
Twisted pair
RS485_TX-
X1.11
X7
Green
R
X1.13
X8
White and
brown
Twisted pair
RS485_RX-
X1.14
X9
Brown
R
Installation Position
The DB15 male connector is linked to the RS485/EXT_ALM port on the cabling cavity of the
RRU, and the other end of the cable is connected to the ports for Boolean alarm signals on the
external device.
2.4 SRXU Cables
The SRXU cables include the PGND cable, power cable, AISG multi-wire cable, AISG
extension cable, CPRI optical cable, and RF jumper.
The PGND cable ensures the grounding of the SRXU.
The SRXU uses a shielded DC power cable. The cable feeds power from the RRU to the SRXU.
2.4.3 AISG Multi-Wire Cable of the RRU/SRXU
2.4.4 AISG Extension Cable of the RRU/SRXU
RRU
User Guide
2 RRU and SRXU Hardware
Issue 01 (2008-04-18)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
2-19