Huawei BTS3900L Installation Manual page 19

BTS3900L (Ver.C)
Installation Guide
No.
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Issue 07 (2013-11-08)
Module
RFU
Fan Assembly
Air intake vent
DCDU-11A
BBU
Cable trough
BBU
Remaining space
NOTE
The transmission equipment is preferentially installed outside the cabinet. However it can be installed at
the bottom of the cabinet under some special condition (e.g.: space constraint). The following requirements
must be satisfied:
l The transmission equipment must be able to work properly at a temperature equal to or higher than
55°C.
l The transmission equipment is fed with external power supply since DCDU-11A does not support
power supply to transmission equipment.
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Optional or Maximum
Mandatory Quantity
Mandatory 12
Mandatory 2
Mandatory -
Mandatory 2
Mandatory 1
Mandatory -
Optional 1
Optional -
3 Information About the Installation
Remark
The RFU modulates and
demodulates baseband
signals and RF signals,
processes data, and
combines and divides
signals.
Fan assembly dissipates the
heat from the cabinet.
-
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BBU3900 processes the
baseband signals and enables
interaction between the base
station and the BSC or RNC.
-
This 2 U space can house a
BBU in triple-mode base
stations. It is recommended
that this space be reserved
even when only one BBU is
installed.
This 2 U space can house the
GATM or transmission
equipment. The GATM is
preferentially installed in this
space and is supplied with
power by the DCDU-01. If
there is no GATM, the
transmission equipment is
installed in this space.
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