Imb03; Figure 5-3 Imb03 - Huawei BBU3900 Hardware Description

5 Auxiliary Devices of the BBU3900

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.
Exterior
Figure 5-3

Figure 5-3 IMB03

(1) Front cover plate of the IMB03
(3) Warning label to avoid treading
Functions
The IMB03 performs the following functions:
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Structure
There are two types of IMB03, that is, the DC IMB03 and AC IMB03.
A DC IMB03 houses the BBU and DCDU-03B, as shown in
5-6
shows an IMB03.
Provides a 3 U space for a distributed base station.
Supports 220 V single-phase AC input and 110 V dual-live-wire AC input.
Supports power input of -48 V DC.
Supports various installation modes, including the wall-mounting mode, rack-mounting
mode, and combined-with-IFS06 mode.
Provides a well-developed function of heat dissipation and facilitates cabling of internal
modules.
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(2) Protection cover
(4) Slots of internal modules in the IMB03
Figure
BBU3900
Hardware Description
5-4.
Issue 11 (2010-11-10)