Auxiliary Devices Of The Bbu3900 - Huawei BBU3900 Hardware Description

BBU3900
Hardware Description
About This Chapter
This describes the auxiliary devices of the BBU3900. The devices consist of the SLPU, OMB
Cabinet and WGRU.
5.1 EMUA
The Environment Monitoring Unit (EMUA) monitors the internal environment of the cabinet
and reports related alarms.
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.
5.3 OMB
The Outdoor Mini Box(OMB) is an outdoor BBU subrack, which is used outdoors. The OMB
cabinet is equipped with the BBU, AC/DC power equipment, DCDU and transmission
equipment. The OMB cabinet is easy to install and maintain. The cable distribution for internal
modules is convenient. The OMB cabinet has good waterproof and dustproof performance, and
the grounding function. In addition, the OMB cabinet provides the protection against moisture,
mould, and salt fog damage.
5.4 IMB03
The Indoor Mini Box (IMB03) is an indoor subrack with a small capacity. It houses a built-in
BBU, AC/DC power equipment, DCDU, or other power equipment.
5.5 DCDU-03
The Direct Current Distribution Unit-03 (DCDU-03) supplies DC power to each component in
the cabinet. The height of the DCDU-03 is 1 U. It can be classified into the DCDU-03B and
DCDU-03C according to the configured MCBs and application scenarios. The two models have
the same exterior, engineering specifications, and ports.
5.6 AC/DC Power Equipment
The AC/DC power equipment consists of the 4815 power system and 2-DC-input power
distribution box. The equipment is used to lead 220 V AC input power into the cabinet, convert
the 220 V AC power into -48 V DC power through the AC/DC PSUs, and supply -48 V DC
power to the components in the cabinet.
5.7 WGRU
The WGRU (WCDMA GPS Receiving Unit) receives and processes positioning information
and synchronization timing signals from the GPS, and then outputs the timing signals as a system
Issue 11 (2010-11-10)
5

Auxiliary Devices of the BBU3900

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5 Auxiliary Devices of the BBU3900
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