Exterior
The alarm cable has a DB15 connector at one end and eight cord-end terminals at the other end.
shows the alarm cable.
Figure 3-10
Alarm cable
Pin Assignment
describes the pin assignment for the wires of the alarm cable.
Table 3-12
Pin assignment for the wires of the RRU alarm cable
RRU
Alarm
Port
Pin of the
DB15
Connecto
r
Wire
Color
Wire
Type
Cord End
Terminal
Description
Dry
contact
X1.2
White/blue Twisted
pair
X2
SWITCH
X1.3
Blue
X3
SWITCH_INPUT0-
(GND)
X1.6
White/
orange
Twisted
pair
X4
SWITCH
X1.7
Orange
X5
SWITCH_INPUT1-
(GND)
RS485
X1.10
White/
green
Twisted
pair
X6
APM RX-
X1.11
Green
X7
APM RX+
X1.13
White/
brown
Twisted
pair
X8
APM TX-
X1.14
Brown
X9
APM TX+
3 RRU Cables
RRU3908 V2
Hardware Description
3-12
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 02 (2010-10-25)