Ericsson RBS 2308 Caractéristiques techniques
2/EN/LZT 720 0327 P1D
RBS 2308
Radio Base Station
Product Description
1(22)
The RBS 2308, a member of the RBS 2000 family, is a 4 TRX radio base
station for indoor and outdoor applications.
P010083A
P010237A
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Radio Base Station RBS 2308
2 (22) 2/EN/LZT 720 0327 P1D
Contents
1 Product Overview 3
1.1 Main features 3
1.2 Variants 3
1.3 Optional Equipment 3
2 Dimensions 4
3 Space requirements 5
4 Environment 6
4.1 Operating Environment 6
4.2 Environmental Impact 6
4.3 Materials 7
5 Hardware Units 7
5.1 Standard Hardware Units 8
5.2 Optional Hardware Units 9
6 Interfaces 10
6.1 External connections 10
6.2 OMT Interface 14
6.3 Operator Interface 14
7 Power System 18
7.1 Power Supply 19
7.2 Power Consumption 19
8 Transmission 20
9 External Alarms 20
10 Standards, Regulations and Dependability 20
10.1 Safety Standards 21
10.2 Other Standards and Regulations 21
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1 Product Overview
The RBS 2308 is an outdoor micro base station. It can be used for indoor or
outdoor applications, with four transceiver (TRX) units. The cabinet can be
mounted on walls, poles or masts.
The RBS 2308 supports CS-3, CS-4 and EGPRS.
Main applications for the RBS 2308 are:
•Hot spots, adding supplementary capacity
•Mega networks, providing micro-cell coverage
•Public meeting places, supplying additional capacity in dense areas
•Replacement of existing RBS 2302 sites where higher capacity or EDGE
is required.
1.1 Main features
The RBS 2308 can support the following features:
•4 TRXs
•Duplex filters
•EDGE (hardware prepared)
•External alarms
•Multidrop by-pass
•Positioning with LMU (Mode A only)
•Power supply for MINI LINK E Micro or LMU
1.2 Variants
The RBS 2308 is available for the following frequency:
•GSM 800
1.3 Optional Equipment
The equipment listed below is available, but is not necessary for basic
operation:
•Mast fixture set
•Material set wall bracket
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2 Dimensions
This section describes the RBS 2308 dimensions, weights and colour.
Size and weight
The dimensions of the basic RBS 2308 cabinet are shown in the figure below.
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610
270
433
Unit of measurement: mm
Figure 1 RBS 2308 dimensions
The weights of the RBS 2308 and of the major units to be handled are given in
the table below.
Table 1 Weights of RBS 2308 and major units
Unit Weight
IXU 9.5 kg
MBU 6.5 kg
RRU 23.5 kg
RXBP 1.6 kg
Sunshield 1.5 kg
Total 42.6 kg
Colour
The RBS 2308 is available in grey (reference number NCS S2502-R).
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3 Space requirements
For installation and maintenance, and proper cooling during operation, the
space in front of the cabinet must be kept clear for a distance of 1000 mm,
and there must be at least 500 mm of free space on the right side and 250 mm
on the left. 300 mm free space is required above the cabinet, see figure below.
No free space is needed at the back of the cabinet.
The distance between the cabinet and the nearest obstruction (floor, filing
cabinet, another RBS, and so on) must be at least 500 mm.
P010123A
Unit of measurement: mm
RBS
250
500
300
1000
500
500
RBS
Figure 2 Space requirements
Mounting Base Holing Pattern
The mounting base of the RBS 2308 has the same holing pattern as that of
the RBS 2302.
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139 180 114
145225217
Measurement in mm
Figure 3 Base frame and installation frame holing pattern
4 Environment
This section provides an overview of the operating environment,
environmental impact, and materials used in the RBS 2308.
4.1 Operating Environment
Climatic Requirements
Temperature limits for operation, transport, storage and handling of the RBS
2308 are given in the table below.
Table 2 Climatic requirements
Condition Temperature Relative humidity
Start-up and operation -33°– +45°C15 – 100%
Transport -40°– +70°C5 – 100%
Storage -25°– +55°C10 – 100%
Handling -40°– +70°C5 – 100%
4.2 Environmental Impact
This section describes the effects that the cabinet has on the environment.
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Heat Dissipation
Average heat loads of the RBS 2308 are given in the table below. The exact
figures are dependent upon configuration, equipment and site-specific
conditions.
Table 3 Average heat load
Operating condition Average heat load
Without heating 315 W
With heating 1000 W
Acoustic Dispersion
The RBS 2308 cabinet does not contribute to the acoustic noise of its
surroundings.
4.3 Materials
All Ericsson products fulfil legal, market and Ericsson requirements regarding:
•Fire resistance of material, components, wires and cables
•Declaration of materials
•Use of restricted materials
•Recycling
Package Material
The package material is recyclable.
5 Hardware Units
A high level of availability is achieved using strict functional modularity in a
system of standardised Replaceable Units (RUs). A failed RU can easily be
replaced by a new one.
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MCB
RXBP
RRU
XU
Flashcard
T M
MBU
Sunshield
Sunshield
Figure 4 RBS 2308 overview
5.1 Standard Hardware Units
This section briefly describes the standard hardware units required for
operation.
Flash Memory Card
All loadable software and the IDB are stored on this unit. The flashcard is field
replaceable and contains all information needed for configuring the RBS 2308
at site.
Number of units: 1
IXU – Interface and Switching Unit
The IXU is the central control unit for one RBS. All switching of traffic is
performed in the IXU, as well as control of climate. The Flash Memory Card,
the TIM, and most external interfaces are located on the IXU.
Number of units: 1
MBU – Mounting Base Unit
The MBU is the mechanical mounting interface for the RBS 2308. It also
contains the interface for the main power supply, and provides surge and
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transient protection for incoming lines. The circuit breaker for primary power
and RRU power switch are located here.
Number of units: 1
Multicasting Box – MCB
The multicasting box provides a single feeder interface for an external
antenna/antenna system. The second antenna output on the multicasting box
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The MCB units can be connected to the RRU.
Number of units: 0 – 2
RRU – Remote Radio Unit
The RRU contains the tranceivers; it handles the combining and distributing
functions for the RBS 2308. The RRU has integrated power supply and
climate control.
Number of units: 1
RXBP
The RXBP filters incoming RX signal, filtering out frequencies outside the RX
spectrum in GSM 800.
The RXBP is connected to the front of the RRU.
Number of units: 0 – 1
Sunshields
The sunshields reduce heat from direct solar radiation and provide a lockable
cover to the RBS 2308.
Number of units: 1 top, 1 front and 2 side panels.
TIM – Transmission Interface Module
The TIM provides an interface to various transmission standards. Currently
only the T1 standard is supported.
Number of units: 1
5.2 Optional Hardware Units
This section describes the RBS 2308 optional hardware units.
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6 Interfaces
In this section, all external and internal connections are listed, as well as the
test interface and the operator interface.
Most external connectors enter the cabinet through the bottom of the cabinet.
The earthing connection is located on the top of the MBU. Test and operator
interfaces are located on cabinet hardware units.
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External
.Ext. alarms
.GPS/LMU
.OMT
.EOM
.DC for external use
.TXL bus
.Transmission
.Power supply
Internal
RRU
MBU
IXU
.Antennas
Figure 5 Internal and external interfaces
6.1 External connections
Most external connectors enter the cabinet through the bottom. The earthing
connection is located on the top of the MBU, and the OMT connection is on
the side of the IXU.
External connections for the RBS 2308 include the following:
•Antenna interface
•AC mains and earthing interfaces
•Transmission interface
•Alarm interface
•OMT interface
•GPS/LMU interfaces
•DC supply for LMU and MINI-LINK E Micro
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2
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