SN
Cable
S1
For details, see
5.8.1 Monitoring Signal Cable for
6.2 EMU
The Environment Monitoring Unit (EMU) is an environmental monitoring device that monitors
environmental conditions of the equipment room.
The EMU connects to main equipment and performs monitoring functions through the alarm
cables. The EMU performs the following functions:
l
Provides monitoring ports for the temperature, humidity, water, infrared, door control
sensors, Boolean signals, analog signals, and output control signals.
l
Provides the RS485 and RS232 ports for the communication with the base station.
For details about the structure and functions of the EMU, see
HUAWEI QCKG1EMU User
Guide
.
6.3 DDF
This section describes the structure, functions, features, and technical specifications of the DDF.
Structure
shows the structure of the DDF.
Figure 6-2
Structure of the DDF
(1) Alarm module (2) Digital distribution
module
(3) Digital distribution
module
(4) Baffle plate (5) Wall-mounting
pieces
BTS3900
Hardware Description
6 BTS3900 Auxiliary Equipment
Issue 04 (2011-02-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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