Huawei DBS3900 Hardware Description

Cable One End The Other End
Connector Connected
to...
Connector Connected to...
3.4 RRU
Alarm Cable
(optional)
Waterproofed
DB9 male
connector
RET/
EXT_ALM
port on the
RRU
Cord end
terminal
External alarm
device
3.9 RRU AISG
Multi-Wire
Cable
(optional)
Waterproofed
DB9 male
connector
RET/
EXT_ALM
port on the
RRU
Standard AISG
female connector
Standard AISG
male connector
on the remote
control unit
(RCU) or on the
AISG extension
cable
3.10 RRU
AISG
Extension
Cable
(optional)
Standard AISG
male connector
Standard AISG
female
connector on
the AISG multi-
wire cable
Standard AISG
female connector
Standard AISG
male connector
on the RCU
3.2 RRU PGND Cable
An RRU PGND cable connects an RRU and a ground bar, ensuring the proper grounding of the
RRU.
Exterior
An RRU PGND cable is green or green and yellow, both ends of the cable are OT terminals. If
the customer prepares the PGND cable, a copper-core cable with a minimum cross-sectional
area of 16 mm
2
(0.025 in.
2
) is recommended. Figure 3-1 shows a PGND cable.
Figure 3-1 PGND cable
(1) OT terminal (M6)
(2) OT terminal (M8)
OT terminals must be added to both ends of a PGND cable onsite.
DBS3900
RRU3252/RRU3256 Hardware Description 3 RRU Cables
Issue Draft A (2012-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11

Huawei DBS3900 Specifications

General

Brand	Huawei
Model	DBS3900
Category	Accessories
Language	English