No. Module/
Board
Optional/
Mandatory
Maximum
Number of
Boards or
Modules
Configured
in a Single
Cabinet
Description
6 EMUA Optional 1 The Environment Monitoring
Unit (EMUA) monitors the
internal environment of the
cabinet and reports related alarms.
The EMUA must be configured
when 16 Boolean alarm inputs are
required. It is installed in the 1 U
space below the BBU.
7
PMU Mandatory 1 The Power Monitoring Unit
(PMU) provides the functions of
power system and storage battery
management, power monitoring,
and alarm reporting.
8 Heater Optional 1 A heater is an optional
component. It ensures that the
customer equipment in the cabinet
works in a proper temperature
scope when the surrounding
temperature is low. It is installed
in the 1 U space at the bottom of
the cabinet. If both the heater and
SOU are configured, the heater is
installed in the 1 U space above
the SOU.
9
SOU Optional 1 The SOU is an optional
component. It transfers AC power
supply to the customer equipment
and is installed in the 1 U space at
the bottom of the cabinet.
Configurations of the RFC
Figure 3-2 shows the exterior and configurations of the RFC.
BTS3900A(Ver.B)
Installation Guide 3 Information About the Installation
Issue 01 (2011-10-25) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8
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