5.1 EMUA
The Environment Monitoring Unit (EMUA) monitors the internal environment of the cabinet
and reports related alarms.
The EMUA is connected to the main equipment through alarm cables, monitoring the
environment information of the equipment room and cabinet. The EMUA monitors the following
items:
l Environment such as the temperature and humidity, water damage, and smoke
l Intrusion status through the infrared equipment and door status sensor
l Power distribution
For details about the structure and functions of the EMUA, see the EMUA User Guide.
5.2 10 U Indoor Centralized Rack
A 10 U indoor centralized rack is installed indoors to provide a 19-inch wide space for equipment.
Exterior
A 10 U indoor centralized rack is 19-inch wide and 10 U high, as shown in Figure 5-1.
Figure 5-1 10 U indoor centralized rack
(1) Left frame
(2) Right frame
Functions
A 10 U indoor centralized rack provides the following functions:
BBU3900
Hardware Description 5 Auxiliary Devices of the BBU3900
Issue 11 (2010-11-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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