Ericsson RBS 2206 Product Description

PRELIMINARY

RBS Product Description

RBS 2206

Description

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PRELIMINARY

Copyright

© Ericsson AB 2006, 2010. All rights reserved. No part of this document may be
reproduced in any form without the written permission of the copyright owner.

Disclaimer

The contents of this document are subject to revision without notice due to
continued progress in methodology, design and manufacturing. Ericsson shall
have no liability for any error or damage of any kind resulting from the use
of this document.

Trademark List

All trademarks mentioned herein are the property
of their respective owners. These are shown in the
document Trademark Information.

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PRELIMINARY

Contents

Contents

1 Introduction 1

1.1 Revision Information 1

2 Product Overview 2

2.1 Main Features 2

2.2 Variants 3

2.3 Optional Equipment 3

3 Dimensions 4

4 Space Requirements 4

5 Environment 7

5.1 Operating Environment 7

5.2 Environmental Impact 10

5.3 Compliance Distances for Electromagnetic Exposure 10

5.4 Materials 12

6 Hardware Units 13

6.1 RBS 2206 Standard Hardware Units 13

6.2 RBS 2206 V2 Standard Hardware Units 16

6.3 Optional Hardware Units 19

7 Interfaces 22

7.1 RBS 2206 External Connections 22

7.2 RBS 2206 V2 External Connections 23

7.3 Test Interface 25

7.4 Operator Interface 25

8 Power System 26

8.1 AC Power 26

8.2 +24 V DC Power 27

8.3

0

48 V DC to060 V DC Power 28

8.4 Power Consumption 29

9 Transmission 29

10 External Alarms 30

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PRELIMINARY

RBS Product Description

11 Standards, Regulations and Dependability 31

11.1 Safety Standards 31

11.2 Other Standards and Regulations 31

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Introduction

1 Introduction

The RBS 2206, a member of the RBS 2000 family, is a 12-Transceiver (TRX)
radio base station for indoor applications. This cabinet covers the same
floor area as the RBS 2202, its predecessor, and has double capacity. The
RBS 2206 V2 is a variant of the RBS 2206, that has a new Electromagnetic
Compatibility (EMC) topology and several new Replaceable Units (RU).

P016586A

RBS 2206 RBS 2206 V2

1.1 Revision Information

Other than editorial changes, this document has been revised as follows:

• Section Transmission: Information about SIU added

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RBS Product Description

2 Product Overview

The RBS 2206 is a high-capacity indoor base station. It is used for indoor
applications, with up to six double Transceiver Units (dTRU). The RBS 2206 is
designed to be transported as a fully assembled cabinet to the site. All units in
the cabinet are easily accessible from the front of the cabinet, which means that
the cabinets can be mounted side by side with their backs against a wall.

2.1 Main Features

The RBS 2206 supports the following features:

• 1, 2 or 3 sectors in one cabinet using Combining and Distribution Unit
CDU-F, CDU-G, or CDU-K (RBS 2206 V2)

• Co-siting (antenna sharing) with GSM, TDMA, or WCDMA systems

• Discontinuous transmission/reception

• Duplex filters

• Dynamic power regulation

• Encryption/ciphering

• Enhanced Data Rate for Global Evolution (EDGE)

• Expansion by TG synchronization

• External alarms

• Frequency hopping

• Link Access Procedures on D-Channel (LAPD) concentration and LAPD
multiplexing are used to make the transmission resource more efficient

• Global Positioning System (GPS) synchronization

• Radio configurations supported on 400 (RBS 2206 V2), 800, 900, 1800
and 1900 MHz

• Receiver diversity

• Transmission Interface: The following transport network interface
alternatives exist:

0

T1 1544 kbps, 100, with PLM synchronization

0

E1 2048 kbps, 75, with PCM synchronization

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Product Overview

0

E1 2048 kbps, 120, with PCM synchronization

• Wide-range power input 120 – 250 V AC

2.2 Variants

Three versions of the RBS 2206 and RBS 2206 V2 cabinets are available:

•

0

48 to060 V DC

• 120–250 V AC (50/60 Hz) and +24 V DC

• +24 V DC, without Power Supply Unit (PSU)

2.3 Optional Equipment

The equipment listed below is available, but is not necessary for basic
functionality.

• Antenna Sharing Unit (ASU)

• Splitter unit

• Battery backup, external only

• Bias injectors

• Distribution Frame (DF), externally mounted

• Dual-Duplex Tower-Mounted Amplifier (ddTMA), externally mounted

• Digital Cross-Connect (DXX), transmission equipment

• External Synchronization Bus (ESB)

• Hybrid Combiner Unit (HCU)

• Redundant PSU

• Tower-Mounted Amplifier Control Module (TMA-CM)

• Transmission Adapter (TA), 75–120



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RBS Product Description

3 Dimensions

This section describes the physical characteristics of the RBS.

For dimensions, see Figure 1.

Weight

Table 1 Weights

Unit Weight

RBS cabinet

(1)

230 kg (507 lbs)

Base frame 12 kg (26 lbs)

(1) Fully equipped including base frame.

Colour

Table 2 Colour

Colour

Reference Number

White NCS S 1002-R

4 Space Requirements

The following sections describe the required space and recommended floor
layout.

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Space Requirements

Space above the RBS Cabinet

P006382A

1770

2070

250

400

600

300

1820

Figure 1 Cabinet Dimensions

The recommended distance between the cabinet and cable ladder is 250 mm.
A shorter distance makes it difficult to exchange fans and may restrict the air
flow. A space of 300 mm is recommended above the cable ladder to make
cable installation work easier.

RBS 2206:

Depth of cabinet including door is 470 mm, of which the door is 70 mm.

RBS 2206 V2:

Depth of cabinet including door is 470 mm, of which the door is 20 mm.

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RBS Product Description

Layout for RBS Cabinets

P007781A

1000

1000

Unit of measurement: mm

RBS

RBS

RBS

BBS

a=130

o

Figure 2 Floor Layout and Space Requirements

The RBS cabinets and Battery Backup System (BBS) racks are mounted on
the floor, and may be positioned against a wall, back to back, or free standing
without contact with other cabinets.

Expansion cabinets and racks can be positioned to the left or to the right of the
master cabinet. However, expansion to the right is recommended in order
to follow the same standard globally.

For maintenance a distance of 1000 mm in front of the cabinets and racks
is recommended.

Note: Space for future expansion must be considered as indicated in the

dotted line in the figure above.

Earthquake Requirements

If the RBS cabinet shall fulfil the requirements for earthquake protection, the
space between wall and cabinet is to be at least 100 mm and between cabinets
at least 150 mm.

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Environment

Footprint

Unit of measurement: mm

P008315A

(RBS 2202)

RBS 2206

FRONT

99

400
598

220

45

320

400

o 20x75

Figure 3 Drilling Pattern

The RBS 2206 has the same footprint as the RBS 2202 cabinet. The base
frame is used as a template to mark new holes. If an RBS 2202 is being
replaced by an RBS 2206, the holes for the old cabinet can be used for the
new cabinet.

The RBS 2206 V2 uses the same base frame as the RBS 2206.

5 Environment

The RBS is designed to operate within limits stated for climatic requirements
and also to have a limited effect on the environment.

5.1 Operating Environment

The climatic requirements for the RBS on the site are shown in the table below.

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RBS Product Description

Table 3 Environmental Specifications

Environmental
Parameters

Normal
Operation

(1)

Safe Functio
n

(2)

Non-destructive
Conditions

(3)

Temperature

+5 to +40 C



0 to +45 C



-10 to +55 C



Relative Humidity

5 – 85% 5 – 90% 5 – 90%

(1) Normal operation describe the environmental conditions where all units function as specified.
(2) Environmental stress above the limits for normal operation where all units shall continue to
function during the stress, but performance or capacity may be reduced. When the environmental
stress has dropped to normal conditions, function as specified shall automatically be achieved.
Safe function refers to a period of not more than 72 consecutive hours, and a total of not more
than 15 days in one year.
(3) Non-destructive conditions describe environmental stress above the limits for normal
conditions with no function guaranteed and unspecified degradation. When the environmental
stress has dropped to normal conditions, restoring full RBS performance requires no manual
intervention on site. Non-destructive conditions refer to a period of maximum 96 consecutive
hours, and a total of maximum 5.5 days in a three-year period.

Acoustic Dispersion

The cabinet noise dispersion for an RBS with four fans is shown in the
two figures below. The figures show the noise dispersion generated by a
free-standing cabinet and by a cabinet mounted against a wall.

Note: The acoustic noise dispersion values for a free-standing cabinet

and a cabinet installed against a wall were tested according to the
ISO 9614-2 standard, however deviations from these values may be
experienced due to the nature of materials in the environment where
the cabinet is installed. Objects may reflect or absorb sound and will
affect acoustic dispersion.

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Environment

Figure 4 Acoustic Dispersion for Free-Standing RBS 2206

Figure 5 Acoustic Dispersion for RBS 2206 Positioned against a Wall

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RBS Product Description

Ground Vibrations

The RBS is designed to withstand random vibrations of up to 0.15 m

2/s3

, and

its resistance to single shocks of up to 40 m/s

2

and seismic activity at test

frequencies of 1–35 Hz is tested.

The maximum test level of the Required Response Spectrum (RRS) is 50 m/s

2

within 2–5 Hz. The shape of the RRS is defined by the relevant ETSI standard.

Levelling

For cabinet levelling purpose, the floor must be level to within ±3 mm/2000 mm
and the floor gradient be within ±0.1



.

5.2 Environmental Impact

This section describes the effects that the cabinet has on the environment.

Heat Dissipation

The RBS generates an average heat load of 1500 W. The exact figure is
dependent upon configuration, equipment and site-specific conditions.

5.3 Compliance Distances for Electromagnetic Exposure

The compliance distance is the minimum separation that should be kept
between the antenna and a person in order to ensure that the ICNIRP RF
exposure limits are not exceeded.

Note: ICNIRP, ‘‘Guidelines for limiting exposure to time-varying electric,

magnetic, and electromagnetic fields (up to 300 GHz)’’, International
Commission on Non-Ionizing Radiation Protection, Health Physics,
vol. 74, no. 4, 1998.

Ericsson has performed a free-space near-field RF exposure assessment
of typical configurations of the RBS with a recommended antenna. The
resulting dimensions, in metres, for a compliance boundary for both public and
occupational exposure are shown in Table 4.

The compliance boundary is defined as a cylinder around the antenna, see
figure below. The antenna is not located at the centre of the cylinder. Instead
it is located almost at the edge, facing towards the centre of the cylinder.
The distance between the antenna's rear and the edge of the cylinder is the
‘‘Distance behind antenna’’. The height of the cylinder is the antenna height
plus equal distances above and below the antenna. The cylinder shape
overestimates the compliance distances right beside the antenna.

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Environment

Figure 6 Compliance Boundary Cylinder

Note: Table 4 shows an example for a typical antenna. As the antenna field

distributions will differ, complete calculations or measurements may
be necessary in order to establish the compliance boundary for other
configurations chosen by the customer. For further information on
calculation methods, see Radio Frequency Electromagnetic Fields.

Table 4 Compliance Boundary Dimensions for the General Public (GP) and

Occupational (O) Exposure for Typical Configurations

Dimensions of Cylindrical Compliance
Boundary in Meter (m)

Diameter Height Distance

Behind
Antenna

Configuration

Frequency
(MHz) GP O GP O GP O

900 6 3 1.7 1.5 0.1 0.1

3x2 no hybrid

1800

5

1 1.6 1.4 0.1 0.05

900 6 3 1.7 1.5 0.1 0.1

3x4 combined

1800

5

1 1.6 1.4 0.1 0.05

900 9 4 1.9 1.6 0.1 0.1

3x2 TCC

1800

7

2 1.6 1.5 0.1 0.1

900 12

5

2.3 1.6 0.1 0.1

1x12 filter
combiner

1800 10 4 1.9 1.6 0.1 0.1

The cylinder shape overestimates the compliance distances right beside the
antenna. In reality the occupational compliance distance by the side, in line
with the front of the antenna, is less than 0.1 metre for output power levels
below 56 W and less than 0.3 metre for the other power levels reported here.
For characteristics of an antenna recommended for typical configurations of an
RBS 2206, see table below.

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RBS Product Description

Table 5 Characteristics for a Typical Antenna (KRE 101 1916/1)

Antenna Specifications

X-pol macro RBS sector antenna

Antenna Height

1.3 m

Horizontal Half-power Beam Width

60 degrees

Vertical Half-power Beam Width

15 degrees at 900 MHz

7 degrees at 1800 MHz

Antenna Gain

14.5 dBi at 900 MHz

17 dBi at 1800 MHz

Down Tilt 0 degrees

The nominal maximum power fed to the antenna, as a function of the number
of Transceiver Units (TRU) per antenna and the maximum power (including
tolerances and transmission loss) per TRU, for RBS at 900 MHz and 1800 MHz,
are given in Table 6.

Table 6 Maximum Power to Antenna for Various RBS Configurations

Configuration

Frequency
(MHz)

Nominal Output
Power per TRU
(dBm)/(W)

Maximum
Power into
Antenna

(1)

(dBm)/(W)

900

45.5 / 35 47.5 / 563x2 no hybrid

1800

44.5 / 28 46.5 / 45

900

42 / 16 47 / 50

3x4 combined

1800

41 / 13 46 / 40

900

48 / 63 50 / 1003x2 TCC

1800

47 / 50 49 / 79

900

43 / 20 53 / 1901x12 filter

combiner

1800

42 / 16 52 / 151

(1) Including power tolerance level (+2 dB) and transmission losses (-3 dB).

5.4 Materials

All Ericsson products fulfil the legal, market and Ericsson requirements
regarding:

• Fire resistance of material, components, wires and cables

• Declaration of materials

• Use of restricted material

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Hardware Units

• Recycling

Package Material

The package material is recyclable.

6 Hardware Units

A high level of availability is achieved using strict functional modularity with a
system of standardized units. A failed unit can easily be replaced by a new one.

The RBS cabinet contains the radio equipment, power supply and the climate
equipment (fans). All required transmission equipment and battery backup
must be housed outside the cabinet.

Outside equipment is listed under optional units. Not all HW units are covered
in this section, only those directly related to the RBS.

6.1 RBS 2206 Standard Hardware Units

This section briefly describes the standard hardware units required for
functionality, irrespective of configuration or frequency.

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RBS Product Description

P008165C

PSU

Base frame

Fans

FCU

ACCU or

DCCU

DC filter

Connection
field

IDM

CDU

DXU

dTRU

OXU (CXU/ASU/HCU)

Connection

field

OXU (TMA-CM/DXX)

Figure 7 RBS 2206 Standard Hardware Units

ACCU-01

This version of the AC Connection Unit (ACCU-01) connects, disconnects, and
distributes the incoming AC power supply to the PSUs.

Number of units: 0–1.

CDU

The Combining and Distribution Unit (CDU) is the interface between the
transceivers and the antenna system. All signals are filtered before transmission
and after reception by means of bandpass filters. The CDU allows several
dTRUs to share antennas. There are a maximum of three CDUs in one RBS.

The CDU combines transmitted signals from several transceivers, and
distributes the received signal to several transceivers. Two different CDU types
are used in the RBS to support all configurations:

• CDU-F is a filter combiner intended for high capacity solutions.

• CDU-G can be configured either for high capacity or for high coverage. It is
a combiner that can be used for synthesizer hopping.

Number of units: 1–3

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Hardware Units

CXU-10

This variant of the Configuration Switch Unit (CXU) cross-connects the CDU
and the dTRU in the receiver path. The CXU makes it possible to expand or
reconfigure a cabinet without moving or replacing any Receiver (RX) cables.
The RX inputs/outputs on the dTRU and the CDU are positioned so that they
minimize the number of cable types needed to connect the CXU with the dTRUs
and the CDUs. The CXU is configured by means of software.

Number of units: 1–2

DCCU-01

This variant of the DC Connection Unit (DCCU) connects, disconnects, and
distributes the incoming DC power supply to the PSUs and the climate unit.

Number of units: 0–1.

dTRU

The Double Transceiver Unit (dTRU) contains two TRXs for the transmission
and reception of two radio carriers. It has a built-in combiner with the optional
possibility of combining two TX signals into one TX output. It can also be
configured for four-branch RX diversity for further improvements in sensitivity.
Variants of the dTRU support GMSK, 8-PSK, 16-QAM and 32-QAM.

Number of units: 1–6

DXU-21

This variant of the Distribution Switch Unit (DXU) is the central control unit
for the RBS. It supports the interface to the Base Station Controller (BSC),
and it collects and transmits alarms. The DXU controls the power and climate
equipment of the RBS. It has a removable compact flash card that makes it
possible to replace a faulty DXU without the need for loading RBS software
from the BSC. The DXU also has four ports for transmission interfaces. It can
handle both 2048 kbps (E1) and 1544 kbps (T1) transmission interfaces. The
DXU supports EDGE on 12 TRXs.

Number of units: 1

FCU

The Fan Control Unit (FCU) controls the fans in the cooling system by regulating
fan speed. The FCU is controlled by the DXU.

Number of units: 1

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RBS Product Description

IDM-01

The Internal Distribution Module (IDM) is a panel for distributing the internal
+24 V DC power to the various units. Each distribution circuit in the cabinet is
connected to a circuit breaker in the IDM.

Number of units: 1

PSU

The Power Supply Unit (PSU) are available in two versions, PSU AC for
connection to AC mains, or PSU DC for connection to

0

48 or

0

60 V DC power

supply.

• The PSU-AC converts 120–250 V to regulated +24 V DC

• The PSU-DC converts

0

48 or

0

60 V DC to regulated +24 V DC

Number of units: 0, 2, 3, 4

DC Filter-01

The DC filter unit is the interface for +24 V DC power supply or battery backup.

Number of units: 0–1

6.2 RBS 2206 V2 Standard Hardware Units

This section briefly describes the standard hardware units required for
functionality, irrespective of configuration or frequency.

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Hardware Units

P016588A

PSU TMA-CM

IDM

CDU

DXU

dTRU

OXU (CXU/ASU/HCU)

Optional equipment space

ACCU-11/DCCU-11DCCU-13

Figure 8 RBS 2206 V2 Standard Hardware Units

ACCU-11

The AC Connection Unit (ACCU) distributes the incoming AC power to the
PSUs.

Number of units: 0–1.

CDU

The Combining and Distribution Unit (CDU) is the interface between
the transceivers and the antenna system. All signals are filtered before
transmission and after reception by means of bandpass filters. The CDU allows
several dTRUs to share antennas.

The CDU combines transmitted signals from several transceivers and
distributes received signals to several transceivers. The RBS uses three CDU
types to support all configurations:

• CDU-F – a filter combiner intended for high capacity solutions.

• CDU-G which can be configured for either high capacity or high coverage
and used for synthesizer hopping

Number of units: 1–3

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RBS Product Description

• CDU-K can be configured for large capacity or large coverage, with
12 transceivers uncombined in one cabinet. It also allows dual band
configurations with 6 transceivers for each frequency. Configurations with
4-way receiver diversity in three sectors can also be built in one cabinet.

Number of units: 1–6

CXU-10

This variant of Configuration Switch Unit (CXU) cross-connects the CDU and
the dTRU in the receiver path. The CXU makes it possible to expand or
reconfigure a cabinet without moving or replacing any RX cables. The RX
inputs/outputs on the dTRU and the CDU are positioned so that they minimize
the number of cable types needed to connect the CXU with the dTRUs and the
CDUs. The CXU is configured by means of software.

Number of units: 1–2

DCCU-11

This variant of the DC Connection Unit (DCCU) distributes incoming DC power
to the PSUs.

Number of units: 0–1.

DCCU-13

This variant of the DC Connection Unit is the interface for +24 V DC power
or battery backup.

Number of units: 0–1

dTRU

This variant of the Double Transceiver Unit (dTRU) contains two TRXs for
transmission and the reception of two radio carriers. It has a built-in combiner
with the optional possibility of combining two TX signals into one TX output. It
can also be configured for four-branch RX diversity for further improvements in
sensitivity. Variants of the dTRU support GMSK, 8-PSK, 16-QAM and 32-QAM.

Number of units: 1–6

DXU-23

This variant of the Distribution Switch Unit (DXU) is the central control unit for
the RBS. It supports the interface to the BSC, and it collects and transmits
alarms. The DXU controls the power and climate equipment of the RBS. It
has a removable compact flash card that enables a faulty DXU to be replaced
without needing to load RBS software from the BSC. The DXU is also the

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Hardware Units

external interface for transmission, GPS Synchronization (GPS), ESB, and
alarms. Four ports can handle both 2048 kbps (E1) and 1544 kbps (T1)
transmission. The DXU supports EDGE.

The fan control is integrated in the DXU and controls the fans in the cooling
system by regulating fan speed.

Number of units: 1

IDM-11

This variant of the Internal Distribution Module (IDM) is a panel for distributing
the internal +24 V DC power to the various units. Each distribution circuit in
the cabinet is connected to an IDM circuit breaker.

Number of units: 1

PSU

Two types of Power Supply Unit (PSU) are available:

• PSU-AC-32, a variant of the PSU that converts AC to DC (PSU-AC), which
converts 120–250 V AC to regulated +24 V DC

• PSU-DC-32, a variant of the PSU that converts DC to DC (PSU-DC), which
converts

0

48 V DC or

0

60 V DC to regulated +24 V DC

Number of units: 0–3

6.3 Optional Hardware Units

This section describes the optional hardware units available for the RBS 2206
and RBS 2206 V2.

ASU-01

The Antenna-Sharing Unit (ASU) is part of co-siting, that is, using another
cabinet together with a GSM RBS cabinet in the same sector. The ASU allows
a TDMA (or other) cabinet and a GSM RBS cabinet to share RX antennas.

Number of units: 0–1

Bias Injector

The bias injectors are mounted directly on the CDU antenna connectors.

Number of units: 0–6

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RBS Product Description

BBS

The RBS can be provided with a Battery Backup System (BBS) from an
external cabinet.

ddTMA

The Dual-Duplex Tower-Mounted Amplifier (ddTMA) is installed on a mast,
close to the antenna. The ddTMA improves receiver sensitivity and saves
feeder cables by duplexing RX and TX signals to the same cable.

DXX

A one- or two-card Digital Cross-Connect (DXX) plug-in unit can be installed in
a space for optional equipment (OXU) on the PSU/DXU subrack in the RBS
2206 (not RBS 2206 V2). The one-card version has four G.703/G.704 ports.
The two-card version has four G.703/G.704 ports and one slot for two to four
additional interfaces that can be G.703/G.704 ports, High Bit Rate Digital
Subscriber Line (HDSL), LTE, or optical fibre.

Number of units: 0–1

DF

The Distribution Frame (DF) is the termination point for incoming PCM, ESB,
GPS, and alarm cables. It contains overvoltage protection for the external
cables.

Number of units: 1

ESB

Transceiver Group (TG) synchronization is the technology used to expand
one RBS cabinet with another RBS cabinet in the same cell. The External
Synchronization Bus (ESB) is the cable connected between the DXUs.

Number of units: 0–1

HCU

The Hybrid Combiner Unit (HCU) contains three hybrid combiners. Each hybrid
combines two RF signals, delivered from two dTRUs, into one.

Number of units: 0–1

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Hardware Units

19-inch Space for Optional Equipment

A 2U-high 19-inch space for optional equipment, for which the RBS provides
climate control.

OXU

The following space for optional expansion (OXU) is available:

• Four positions (RBS 2206) or two positions (RBS 2206 V2) in the DXU/PSU
subrack

• A 1U-high 19-inch OXU position is available between the CXU and the
dTRU subrack.

RUs which typically are located in the OXU slots include the DXX and the
TMA-CM. The 19-inch position above the CXU is used for ASUs, HCUs, and
splitters.

Splitter

The splitter splits an RX signal from the CDU into two outputs. Six RX signals
can be split into 12 outputs.

Number of units: 0–1

TMA-CM-01

The TMA-CM-01 is used to provide up to six ddTMAs with 15 V DC power
through bias injectors in the RBS 2206. It is also used to identify TMA faults
and forward this information to the DXU. The TMA-CM-01 is mounted in an
OXU position.

Note: RBS 2206 only.

Number of units per cabinet: 0–2

TMA-CM-02

The TMA-CM-02 is used to provide up to six ddTMAs with 15 V DC power
through bias injectors in the RBS 2206 and RBS 2206 V2. It is also used to
identify TMA faults and forward this information to the DXU. The TMA-CM-02 is
mounted in an OXU position.

Number of units per cabinet: 0–2

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RBS Product Description

7 Interfaces

This section describes the external connections for RBS 2206.

In this section all external and internal connections are listed, as well as the test
interface and the operator interface.

The connection field for external connectors is located at the top of the radio
cabinet inside the door. Internal connections, the test interface and operator
interface are located on some hardware units.

7.1 RBS 2206 External Connections

This section describes the external connections for RBS 2206.

P008990B

DC-Filter-01

DC
out

External
Alarms

ESB-1

G703-1

ACCU/DCCU

G703-2

G703-3

G703-4

ESB-2

+24 V DC

RD

TD

FCU

CDU

Connection positions for optional equipment

ASU
Connection
Field

ASU
Connection
Field

Figure 9 RBS 2206 External Connectors

Antenna feeders are directly connected to the CDUs. If bias injectors are
used, these are connected directly to the CDU and the antenna feeders are
connected to the bias injector.

Table 7 RBS 2206 External Connections

Connection

Description

Connector Type

CDU Feeder (and bias injector)

connection to antennas

7/16 female connector

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Interfaces

Connection

Description

Connector Type

G.703-1 Transmission Link 1 15-pin female, D-sub

G.703-2 Transmission Link 2 15-pin female, D-sub

G.703-3 Transmission Link 3 15-pin female, D-sub

G.703-4 Transmission Link 4 15-pin female, D-sub

DC out +24 V DC to external

equipment

3-pole female, D-sub

External Alarms External alarm inputs fromDF37-pin female, D-sub

ESB-1 ESB to co-sited cabinets 9-pin female, D-sub

ESB-2 ESB to co-sited cabinets 9-pin female, D-sub

FCU RD Optical cable connector

from the BBS

Opto connector

+24 V DC DC filter Cable clamp

Earth Earth stud M8 to main earth

cable

M8 stud

ACCU Mains connection to

PSU-AC

Screw terminal

DCCU

0

48 V connection to

PSU-DC

Screw terminal

ASU Antenna sharing

connections

SMA-connector

TMA-CM DC power supply through

bias injectors to the TMAs

SMA-connector

DXX Transmission link TNC-connector

GPS Synchronization signal from

GPS antenna

9-pin female, D-sub

7.2 RBS 2206 V2 External Connections

This section describes the external connections of the RBS 2206 V2.

The RBS does not have connection fields on the upper right- and left-hand
sides of the cabinet. Cables are instead connected directly to the DXU.

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RBS Product Description

P016585A

DCCU-13

ACCU-11/DCCU-11

CDU

ASU
Connection
Field

ASU
Connection
Field

TMA-CM DXU

TMA power

GPS

ESB

EPC

Alarms

Transmission

OMT

Figure 10 RBS 2206 V2 External Connections

Antenna feeders are directly connected to the CDUs. If bias injectors are
used, then they are connected directly to the CDU, and the antenna feeder is
connected to the bias injector.

Table 8 RBS 2206 V2 External Connections

Connection

Description

Connector Type

CDU Feeder (and bias injector)

connection to antennas

Female 7/16 connector

G.703-1, G.703-2 Transmission links 1 and 2 RJ-45 (on DXU)

G.703-3, G.703-4 Transmission links 3 and 4 RJ-45 (on DXU)

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Interfaces

Connection

Description

Connector Type

External alarms External alarm inputs from

DF

Champ .050 (on DXU)

ESB-1 ESB to co-sited cabinets Female 9-pin D-sub

(on DXU)

ESB-2 ESB to co-sited cabinets Female 9-pin D-sub

(on DXU)

DCCU-13 +24 V DC battery backup 2 terminals

Earth Main earth terminal M8 stud (cabinet top)

ACCU-11 AC power to PSU-AC-32 Screw terminals

DCCU-11

0

48 V DC power to

PSU-DC-32

Screw terminals

ASU Antenna sharing

connections

SMA connector

TMA power DC power supply through

bias injectors to the TMAs

Female 15-pin D-sub
(on TMA-CM)

GPS Synchronization from GPS

antenna

RJ-45 (on DXU)

7.3 Test Interface

The test interface for the RBS is on the front panel of the DXU unit. The
Operation and Maintenance Tool (OMT) port is used to connect the OMT to
the RBS. A remote OMT can also be used from the BSC, which sends signals
over the Abis interface.

7.4 Operator Interface

The Man Machine Interface (MMI) in the RBS is based on visual indicators and
buttons located on the hardware units in the cabinet.

Indicators Description

Battery mode Indicates that the RBS is running on battery

RBS fault One or more faults are detected on RUs in the

RBS

EPC bus fault Indicates the state of the EPC bus

Ext alarm One or more supervised external alarms are

active

Fault Fault detected and localized to the RU

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RBS Product Description

Indicators Description

Local mode The RU is in local mode

Operational The RU is operational

Transmission OK Indicates state of transmission on ports A – D

RF off RF not enabled

Buttons Description

TRU reset Resets the dTRU

DXU reset Resets the DXU

Local/remote mode Changes RU mode to local or remote

8 Power System

The power system of the RBS depends on the choice of power supply and may
include a number of units outside the RBS.

The RBS can be connected either to an AC power supply or to a DC power
supply.

8.1 AC Power

AC power is supplied to the ACCU through one cable for each PSU. If the power
source does not meet the AC power requirements, then filters and stabilizers
must be installed to protect the equipment and ensure proper operation.

There are two ways to connect power to the RBS, as follows:

• Single phase, line to neutral

• Single phase, line to line

Note: When single phase line to line is used, each supply cable requires two

circuit breakers or fuses.

Table 9 AC Power Requirements

Characteristic

Description

Voltage for specified performance
(phase voltage)

120–250 V AC

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Power System

Characteristic

Description

Voltage 90–275 V AC

(1)

Frequency 45–65 Hz

Maximum inrush current 30 A (1–30 ms)

Maximum AC power, RBS 2206 4 × 1.4 kW

Maximum AC power, RBS 2206 V2 3 × 1.7 kW

Non-destructive range 0–275 V AC

(1) Install external filter and stabilizer if the requirement is not met.

RBS 2206 AC Fuses

Table 10 Fuse Specifications

Minimum for Safe
Function

Recommended for
Maximum Selectivity

Maximum Allowed
Fuse Rating

4 × 10 A

(1)

4×16A 4×20A

(1) For 200–250 V range only.

RBS 2206 V2 AC Fuses

Table 11 Fuse Specifications

120–127 V AC

(Nominal)

200–250 V AC

(Nominal)

Maximum Allowed
Fuse Rating

3 × 16 A 3 × 10 A 3 × 16 A

External Earth Fault Circuit Breakers

If external earth fault (ground fault) circuit breakers are used, then the
recommended minimum trip value is 100 mA.

8.2 +24 V DC Power

Table 12 +24 V DC Power Requirements

Characteristic

Description

Nominal +24 V DC

Default +27.2 V DC

Range +20.5 to +29.0 V DC

Non-destructive range +0 to +32 V DC

Inrush current Max. 500 A (0.1–10 ms)

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RBS Product Description

RBS 2206 +24 V DC Fuses

Table 13 Fuse Specifications

Minimum for Safe
Function

Recommended for
Maximum Selectivity

Maximum Allowed
Fuse Rating

1 × 160 A

(1)

1 × 200 A 1 × 250 A

(1) Can be used when no transmission or optional equipment is installed.

RBS 2206 V2 +24 V DC Fuses

Table 14 Fuse Specifications

Minimum for Safe
Function

Recommended for
Maximum Selectivity

Maximum Allowed
Fuse Rating

1 × 160 A 1 × 200 A 1 × 300 A

8.3

0

48 V DC to

0

60 V DC Power

Table 15 Requirements

Characteristic

Description

Nominal

0

48 or

0

60 V DC

Range

0

40.0 to072.0 V DC

Non-destructive range +0 to

0

80 V DC

Inrush current 200 A (0.1–5 ms)

RBS 2206048 V DC to

0

60 V DC Fuses

Table 16 Fuse Specifications

Minimum for Safe
Function

Recommended for
Maximum Selectivity

Maximum Allowed
Fuse Rating

4 × 32 A 4 × 35 A 4 × 40 A

RBS 2206 V2

0

48 V DC to060 V DC Fuses

Table 17 Fuse Specifications

Minimum for Safe
Function

Recommended for
Maximum Selectivity

Maximum Allowed
Fuse Rating

3 × 45 A 3 × 50 A 3 × 50 A

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Transmission

8.4 Power Consumption

The power consumption figures shown in the table below are for dimensioning
cables and fuses. The figures in the table have been rounded off.

Table 18 Power Consumption RBS 2206

Power Supply Voltage

RBS Cabinet
(Fully Equipped)

120–250 V AC +24 V DC

0

48 V DC

Maximum Powe
r Consumption

3.9 / 5.7 kW

(1)

3.2 kW 3.8 kW

(1) Power consumption during maximum battery charging.

The RBS can supply transmission equipment with +24 V DC. The maximum
power output is 250 W.

Table 19 Power Consumption RBS 2206 V2

Power Supply Voltage

RBS Cabinet
(Fully Equipped)

120–127 V
AC

200–250 V
AC

+24 V DC

0

48 V DC

Maximum Power
Consumption

3.3 / 4.1
kW

(1)

3.2 / 5.1 kW 3.0 kW 3.4 kW

(1) Power consumption during maximum battery charging.

9 Transmission

The RBS is normally connected to a DF for transmission. Four transmission
cables are connected to the ports on the front of the DXU. The RBS supports
two transmission standards:

• T1 1.5 Mbit/s, 100



,

• E1 2 Mbit/s, 75



• E1 2 Mbit/s, 120



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RBS Product Description

Overvoltage Protection Modules

This module contains overvoltage protection for the E1/T1 interfaces. If the
E1/T1 interfaces are terminated in equipment outside the RBS equipment
room, these lines must be protected by Overvoltage Protection (OVP) modules
in the DF.

Optional Transmission Equipment

The cabinet can be connected to transmission equipment that is mounted
externally or inside the RBS depending on the transmission equipment.
Transmission equipment that can be used is as follows:

• Transmission adapter (not connected to DF) with BNC connector

• AXX 9100

• MINI-LINK

• TMR 9202

• SIU-01

For more information about transmission equipment and configurations,
see document Transmission Configurations and Installation, RBS 2206,
151 86-EN/LZT 720 0461.

10 External Alarms

The RBS supports a maximum of 16 external alarms. The external alarm
device can set the alarm using either an open or a closed condition.

The alarm device connected to the terminals should be isolated relay contacts.
A closed contact (logic zero) is required to be below 2 k



, and an open contact

(logic one) above 100 k



. The current through a closed contact is 1.2 mA. The

voltage between terminals with an open contact is 24 V DC.

The inputs must be protected by an overvoltage protection unit.

The external alarms are defined at the installation. They are defined by using
the OMT or from the BSC using the remote OMT.

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Standards, Regulations and Dependability

11 Standards, Regulations and Dependability

This section provides a brief overview of standards, type approval, and EMC.

11.1 Safety Standards

In accordance with the market requirements, the RBS complies with the
following product safety standards:

• 73/23/EEC Low voltage directive

• IP 20 according to IEC/EN 60529

• FCC rules, part 68

• EN 60950-1 and IEC 60950-1

• EN 60215 and IEC 60215

• ANSI/UL 60950-1 and CSA C22.2 No. 60950-1

The RBS 2206 complies with following standards:

Note: Not applicable for the RBS 2206 V2

• EN 60825-1 and IEC 60825-1

• 21CFR 1040.10

11.2 Other Standards and Regulations

Marking

The product is marked with symbols to indicate compliance with product safety
standards.

Type Approval Standards

The RBS complies with the European Community and the North America
market requirements regarding radio performance. The product has the CE
and FCC symbols to indicate compliance with the legal requirements of the
respective region.

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RBS Product Description

EMC

The RBS complies with the European Community and the North America
market requirements regarding EMC. The product has the CE and FCC signs
to show compliance with the legal requirements of the respective region.

Dependability

The RBS is designed for a technical lifetime of 25 years (24-hour operation).
The following preventive maintenance conditions must be fulfilled to guarantee
the availability of the RBS:

Fans The fans must be inspected (and cleaned if

necessary) every year.

Air filters The air filters must be regularly inspected

and cleaned (the interval depends on the
environmental conditions at the site).

Vandal Resistance

Unauthorized access is not possible without damaging the unit.

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