SIST EN 302 608 V1.1.1:2009

ETSI EN 302 608 V1.1.1 (2008-11)
Harmonized European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short Range Devices (SRD);
Radio equipment for Eurobalise railway systems;
Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive

---------------------- Page: 1 ----------------------
2 ETSI EN 302 608 V1.1.1 (2008-11)



Reference
DEN/ERM-TG28-0418
Keywords
radio, SRD, testing
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2008.
All rights reserved.

TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI EN 302 608 V1.1.1 (2008-11)
Contents
Intellectual Property Rights . 5
Foreword . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 7
2.2 Informative references . 7
3 Definitions, symbols and abbreviations . 8
3.1 Definitions . 8
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Technical Requirements Specification . 9
4.1 Technical Requirements . 9
4.1.1 OBE Transmitter Mask . 9
4.1.1.1 Definition . 9
4.1.1.2 Test Procedure . 9
4.1.1.3 Limit . 9
4.1.1.4 Maximum Allowable Measurement Uncertainty . 9
4.1.2 OBE Unwanted Emissions . 9
4.1.2.1 Definition . 9
4.1.2.2 Test Procedure . 10
4.1.2.3 Limit . 10
4.1.2.4 Maximum Allowable Measurement Uncertainty . 10
4.1.3 Eurobalise Transmitter Mask . 10
4.1.3.1 Definition . 10
4.1.3.2 Test Procedure . 10
4.1.3.3 Limit . 11
4.1.3.4 Maximum Allowable Measurement Uncertainty . 11
4.1.4 Eurobalise Unwanted Emissions . 11
4.1.4.1 Definition . 11
4.1.4.2 Test Procedure . 11
4.1.4.3 Limit . 12
4.1.4.4 Maximum allowable measurement uncertainty. 12
5 Test Conditions . 12
5.1 General . 12
5.2 Test Power Source . 12
5.3 Normal Test Conditions . 12
5.3.1 Normal Temperature and Humidity . 12
5.3.2 Normal Test Power Source . 13
5.3.2.1 Mains Voltage . 13
5.3.2.2 Other Power Sources . 13
5.4 Requirements for the Test Modulation . 13
5.5 Choice of Equipment for Test Suites . 13
5.6 Measuring Receiver . 13
6 Measurement Uncertainty . 14
7 Test Procedures for Essential Radio Test Suites . 14
7.1 OBE Transmitter Mask . 14
7.2 OBE Unwanted Emissions . 15
7.3 Eurobalise Transmitter Mask . 15
7.4 Eurobalise Unwanted Emissions . 16
ETSI

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4 ETSI EN 302 608 V1.1.1 (2008-11)
Annex A (normative): HS Requirements and conformance Test specifications Table (HS-
RTT) . 17
Annex B (normative): Radiated Measurement . 19
B.1 Test sites and General Arrangements for Measurements Involving the use of Radiated Fields . 19
B.1.1 General . 19
B.1.2 Anechoic Chamber . 19
B.1.3 Anechoic Chamber with a Conductive Ground Plane . 20
B.1.4 Open Area Test Site (OATS) . 21
B.1.5 Test Antenna . 22
B.2 Guidance on the Use of Radiation Test Sites . 22
B.2.1 General . 22
B.2.2 Verification of the Test Site . 23
B.2.3 Preparation of the EUT . 23
B.2.4 Range Length . 23
B.2.4.1 Far-field Length Above 30 MHz . 23
B.2.4.2 Near-field and Far-field Length Below 30 MHz . 24
B.2.5 Site Preparation . 24
B.3 Coupling of Signals . 24
B.3.1 General . 24
B.3.2 Data Signals. 24
B.4 Standard Test Position . 25
Annex C (informative): E-fields in the Near Field at Low Frequencies . 26
Annex D (normative): H-field Measurements and Limits at 3 m and 30 m. 28
D.1 General . 28
D.2 Limits for Measurements at 30 m Distance . 28
D.3 Limits for Measurements at 3 m Distance . 29
Annex E (informative): The EN title in the official languages . 30
Annex F (informative): Bibliography . 31
History . 32

ETSI

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5 ETSI EN 302 608 V1.1.1 (2008-11)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document has been produced by ETSI in response to mandate M/364 from the European Commission
issued under Council Directive 98/34/EC [i.1] (as amended) laying down a procedure for the provision of information
in the field of technical standards and regulations.
The present document is intended to become a Harmonized Standard, the reference of which will be published in the
Official Journal of the European Communities referencing the Directive 1999/5/EC [i.2] of the European Parliament
and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual
recognition of their conformity ("the R&TTE Directive").
Technical specifications relevant to Directive 1999/5/EC [i.2] are given in annex A.
These specifications are complementary with the system and interoperability requirements for these devices established
under Commission Decision 2004/447/EC [i.3].
In addition, relevant parts of EN 50121 [i.4] are applicable for the electromagnetic compatibility of railway applications
(part 3-2 for the OBE and part 4 for the Eurobalise equipment).

National transposition dates
Date of adoption of this EN: 4 November 2008
Date of latest announcement of this EN (doa): 28 February 2009
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 August 2009
Date of withdrawal of any conflicting National Standard (dow): 31 August 2010

Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive. The modular
structure is shown in EG 201 399 [i.5].
The Eurobalise transmission system is defined by the specifications of the UNISIG consortium [i.6] and [i.7].
ETSI

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6 ETSI EN 302 608 V1.1.1 (2008-11)
1 Scope
The present document covers the technical requirements for radio transmitters and receivers used in the Eurobalise
transmission system. The system is only used in railway systems.
It applies to the following equipment units:
a) the On-Board Equipment (OBE) Tele-powering the Eurobalise; and
b) the Eurobalise that is always installed in between the rails.
The OBE comprises a transmitter (normally un-modulated) and a receiver fitted with an integral or dedicated antenna.
The Eurobalise FSK-modulated transmitter is Tele-powered by the OBE and has an integral antenna.
The Eurobalise transmission system operates in accordance with ERC Recommendation 70-03 [i.8], annex 4.
These radio equipment types are capable of operating at the following frequencies as given in table 1.
Table 1: Radio communications frequencies
Radio communications frequencies
OBE transmit centre frequency 27,095 MHz
Eurobalise transmit centre frequency 4,234 MHz

The present document is intended to cover the provisions of Directive 1999/5/EC [i.2] (R&TTE Directive) article 3.2,
which states that "… radio equipment shall be so constructed that it effectively uses the spectrum allocated to
terrestrial/space radio communications and orbital resources so as to avoid harmful interference".
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
ETSI

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7 ETSI EN 302 608 V1.1.1 (2008-11)
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TR 102 273 (V1.2.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties".
[2] CISPR 16 (2006), (parts 1-1, 1-4 and 1-5): "Specification for radio disturbance and immunity
measuring apparatus and methods; Part 1: Radio disturbance and immunity measuring apparatus".
[3] ETSI TR 100 028 (V1.4.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[4] ANSI C63.5 (2006): "American National Standard for Electromagnetic Compatibility - Radiated
Emission Measurements in Electromagnetic Interference (EMI) Control - Calibration of Antennas
(9 kHz to 40 GHz)".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a
procedure for the provision of information in the field of technical standards and regulations.
[i.2] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (R&TTE Directive).
[i.3] Commission Decision 2004/447/EC of 29 April 2004 modifying Annex A to Decision
2002/731/EC of 30 May 2002 and establishing the main characteristics of Class A system
(ERTMS) of the control-command and signalling subsystem of the trans-European conventional
rail system referred to in Directive 2001/16/EC of the European Parliament and of the Council.
[i.4] CENELEC EN 50121 (all parts): "Railway Applications - Electromagnetic Compatibility".
[i.5] ETSI EG 201 399 (V2.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
A guide to the production of candidate Harmonized Standards for application under the R&TTE
Directive".
[i.6] UNISIG SUBSET-085: "Test Specification for Eurobalise FFFIS".
[i.7] UNISIG SUBSET-036: "FFFIS for Eurobalise".
NOTE: The UNISIG Consortium was composed of the following European Companies working in the Railway
Signalling area: Alstom, Ansaldo Signal, Bombardier, Invesys Rail, Siemens, and Thales.
[i.8] CEPT/ERC/Recommendation 70-03: "Relating to the use of Short Range Devices (SRD)".
ETSI

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8 ETSI EN 302 608 V1.1.1 (2008-11)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
down-link: optional binary ASK- modulated transmission link from the OBE to trackside units
duty cycle: defined as the ratio, expressed as a percentage, of the maximum transmitter "on" time monitored over one
hour, relative to a one hour period
eurobalise: wayside transmission unit that uses the magnetic transponder technology
NOTE: Its main function is to transmit and/or receive signals through the air gap. The Eurobalise is a single
device mounted on the track, which communicates with a train passing over it.
integral antenna: permanent fixed antenna, which may be built-in, designed as an indispensable part of the equipment
magnetic transponder technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver for conveying data and energy
NOTE: In the Eurobalise transmission system context, it considers systems using the 27,095 MHz for Tele-
powering and 4,234 MHz for Up-link transmission.
On-Board Equipment (OBE): consists of antenna unit(s) (for magnetic transponder technology) and the Balise
transmission function
NOTE: It functionally matches the air-gap interface and is installed on a train.
RF carrier: fixed radio frequency prior to modulation
Tele-powering: signal transmitted by the OBE, which activates the Eurobalise upon passage
NOTE: The signal is normally an un-modulated RF carrier (CW). However, it may optionally be binary ASK-
modulated for the transmission of down-link data.
up-link: transmission link from the Eurobalise to the OBE
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
S Power Density
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ASK Amplitude Shift Keying
CW Continuous Wave
EUT Equipment Under Test
FSK Frequency Shift Keying
HS Harmonized Standard
OATS Open Area Test Site
OBE On-Board Equipment
ETSI

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9 ETSI EN 302 608 V1.1.1 (2008-11)
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
SRD Short Range Device
VSWR Voltage Standing Wave Ratio
4 Technical Requirements Specification
4.1 Technical Requirements
4.1.1 OBE Transmitter Mask
4.1.1.1 Definition
This test only applies to the OBE.
The radiated H-field mask is defined in the direction of maximum field strength under specified conditions of
measurement.
4.1.1.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.1).
4.1.1.3 Limit
The limits of figure 1 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
+42 dBµA/m
+5 dBµA/m
f +200 kHz
f -200 kHz f -5 kHz f +5 kHz o
o
o o
-1 dBµA/m
f = 27.095 MHz
o
f +500 kHz
f -500 kHz
o
o

Figure 1: OBE transmitter mask
4.1.1.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.2 OBE Unwanted Emissions
4.1.2.1 Definition
This test only applies to the OBE. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.1.1.3.
ETSI

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10 ETSI EN 302 608 V1.1.1 (2008-11)
4.1.2.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.2).
4.1.2.3 Limit
The limits in table 2 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 2: OBE unwanted emissions limits
Frequency: (f) Limit
44 dBµA/m at 9 kHz decreasing with logarithm of
9 kHz ≤ f < 150 kHz
frequency to 19 dBµA/m at 150 kHz
54 dBµA/m at 150 kHz decreasing with logarithm of
150 kHz ≤ f < 30 MHz
frequency to 4 dBµA/m at 30 MHz
79 dBµV/m at 30 MHz decreasing with logarithm of
30 MHz ≤ f ≤ 1 GHz
frequency to 54 dBµV/m at 1 GHz

4.1.2.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.3 Eurobalise Transmitter Mask
4.1.3.1 Definition
This test only applies to Eurobalises.
The radiated H-field uplink mask is defined in the direction of maximum field strength under specified conditions of
measurement.
4.1.3.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.3).
ETSI

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11 ETSI EN 302 608 V1.1.1 (2008-11)
4.1.3.3 Limit
The limits of figure 2 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
17
7
-3
-13
-23
1 3 5 7 9
Frequency [MHz]


Figure 2: Eurobalise transmitter mask
The defined in-band frequency range is limited to the frequency range 4,234 MHz ± 1 MHz. The maximum value in the
graph of figure 2 is 9 dBµA/m.
NOTE: ERC Recommendation 70-03 [i.8], annex 4 recommends a maximum duty cycle of 1 % for the Eurobalise
transmitter. This duty cycle can not be exceeded during normal operation due to the fact that the train
never stops above the Eurobalise, i.e. the train only stops after the Eurobalise has been passed. In
principle, it is impossible to exceed the duty cycle with moving trains due to the distance between trains
versus Eurobalise operating range.
The provider shall declare the maximum duty cycle to not exceed 1 %.
4.1.3.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.4 Eurobalise Unwanted Emissions
4.1.4.1 Definition
This test only applies to Eurobalises. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.1.1.3 and outside the frequency range
4,234 MHz ± 1 MHz as defined in clause 4.1.3.3.
4.1.4.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.4).
ETSI
Field Strength [dBμA/m]

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12 ETSI EN 302 608 V1.1.1 (2008-11)
4.1.4.3 Limit
The limits in table 3 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 3: Eurobalise unwante
...

Final draft ETSI EN 302 608 V1.1.1 (2008-09)
Harmonized European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short Range Devices (SRD);
Radio equipment for Eurobalise railway systems;
Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive

---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 302 608 V1.1.1 (2008-09)



Reference
DEN/ERM-TG28-0418
Keywords
radio, SRD, testing
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2008.
All rights reserved.

TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI

---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .5
1 Scope.6
2 References.6
2.1 Normative references.7
2.2 Informative references.7
3 Definitions, symbols and abbreviations .7
3.1 Definitions.7
3.2 Symbols.8
3.3 Abbreviations.8
4 Technical Requirements Specification.9
4.1 Technical Requirements.9
4.1.1 OBE Transmitter Mask.9
4.1.1.1 Definition.9
4.1.1.2 Test Procedure.9
4.1.1.3 Limit.9
4.1.1.4 Maximum Allowable Measurement Uncertainty .9
4.1.2 OBE Unwanted Emissions.9
4.1.2.1 Definition.9
4.1.2.2 Test Procedure.9
4.1.2.3 Limit.10
4.1.2.4 Maximum Allowable Measurement Uncertainty .10
4.1.3 Eurobalise Transmitter Mask.10
4.1.3.1 Definition.10
4.1.3.2 Test Procedure.10
4.1.3.3 Limit.10
4.1.3.4 Maximum Allowable Measurement Uncertainty .11
4.1.4 Eurobalise Unwanted Emissions.11
4.1.4.1 Definition.11
4.1.4.2 Test Procedure.11
4.1.4.3 Limit.11
4.1.4.4 Maximum allowable measurement uncertainty.11
5 Test Conditions.11
5.1 General.11
5.2 Test Power Source.12
5.3 Normal Test Conditions .12
5.3.1 Normal Temperature and Humidity.12
5.3.2 Normal Test Power Source .12
5.3.2.1 Mains Voltage.12
5.3.2.2 Other Power Sources.12
5.4 Requirements for the Test Modulation.12
5.5 Choice of Equipment for Test Suites.12
5.6 Measuring Receiver.13
6 Measurement Uncertainty .13
7 Test Procedures for Essential Radio Test Suites .14
7.1 OBE Transmitter Mask.14
7.2 OBE Unwanted Emissions .14
7.3 Eurobalise Transmitter Mask .15
7.4 Eurobalise Unwanted Emissions .16
ETSI

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4 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
Annex A (normative): HS Requirements and conformance Test specifications Table (HS-
RTT).17
Annex B (normative): Radiated Measurement .19
B.1 Test sites and General Arrangements for Measurements Involving the use of Radiated Fields .19
B.1.1 General.19
B.1.2 Anechoic Chamber.19
B.1.3 Anechoic Chamber with a Conductive Ground Plane.20
B.1.4 Open Area Test Site (OATS) .21
B.1.5 Test Antenna.22
B.2 Guidance on the Use of Radiation Test Sites .22
B.2.1 General.22
B.2.2 Verification of the Test Site .23
B.2.3 Preparation of the EUT.23
B.2.4 Range Length.23
B.2.4.1 Far-field Length Above 30 MHz .23
B.2.4.2 Near-field and Far-field Length Below 30 MHz.24
B.2.5 Site Preparation.24
B.3 Coupling of Signals.24
B.3.1 General.24
B.3.2 Data Signals.24
B.4 Standard Test Position.25
Annex C (informative): E-fields in the Near Field at Low Frequencies .26
Annex D (normative): H-field Measurements and Limits at 3 m and 30 m.28
D.1 General.28
D.2 Limits for Measurements at 30 m Distance.28
D.3 Limits for Measurements at 3 m Distance.29
Annex E (informative): The EN title in the official languages .30
Annex F (informative): Bibliography.31
History .32

ETSI

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5 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the
ETSI standards Two-step Approval Procedure.
The present document has been produced by ETSI in response to mandate M/364 from the European Commission
issued under Council Directive 98/34/EC [i.1] (as amended) laying down a procedure for the provision of information
in the field of technical standards and regulations.
The present document is intended to become a Harmonized Standard, the reference of which will be published in the
Official Journal of the European Communities referencing the Directive 1999/5/EC [i.2] of the European Parliament
and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual
recognition of their conformity ("the R&TTE Directive").
Technical specifications relevant to Directive 1999/5/EC [i.2] are given in annex A.
These specifications are complementary with the system and interoperability requirements for these devices established
under Commission Decision 2004/447/EC [i.3].
In addition, relevant parts of EN 50121 [i.4] are applicable for the electromagnetic compatibility of railway applications
(part 3-2 for the OBE and part 4 for the Eurobalise equipment).

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive. The modular
structure is shown in EG 201 399 [i.5] (see bibliography).
The Eurobalise transmission system is defined by the specifications of the UNISIG consortium (see bibliography).
ETSI

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6 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
1 Scope
The present document covers the technical requirements for radio transmitters and receivers used in the Eurobalise
transmission system. The system is only used in railway systems.
It applies to the following equipment units:
a) the On-board Equipment (OBE) Tele-powering the Eurobalise; and
b) the Eurobalise that is always installed in between the rails.
The OBE comprises a transmitter (normally un-modulated) and a receiver fitted with an integral or dedicated antenna.
The Eurobalise FSK-modulated transmitter is Tele-powered by the OBE and has an integral antenna.
The Eurobalise transmission system operates in accordance with ERC Recommendation 70-03, annex 4.
These radio equipment types are capable of operating at the following frequencies as given in table 1.
Table 1: Radio communications frequencies
Radio communications frequencies
OBE transmit centre frequency 27,095 MHz
Eurobalise transmit centre frequency 4,234 MHz

The present document is intended to cover the provisions of Directive 1999/5/EC [i.2] (R&TTE Directive) article 3.2,
which states that "… radio equipment shall be so constructed that it effectively uses the spectrum allocated to
terrestrial/space radio communications and orbital resources so as to avoid harmful interference".
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
ETSI

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7 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TR 102 273 (V1.2.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties".
[2] CISPR 16 (2006), (parts 1-1, 1-4 and 1-5): "Specification for radio disturbance and immunity
measuring apparatus and methods; Part 1: Radio disturbance and immunity measuring apparatus".
[3] ETSI TR 100 028 (V1.4.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[4] ANSI C63.5 (2006): "American National Standard for Electromagnetic Compatibility - Radiated
Emission Measurements in Electromagnetic Interference (EMI) Control - Calibration of Antennas
(9 kHz to 40 GHz)".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a
procedure for the provision of information in the field of technical standards and regulations.
[i.2] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (R&TTE Directive).
[i.3] Commission Decision 2004/447/EC of 29 April 2004 modifying Annex A to Decision
2002/731/EC of 30 May 2002 and establishing the main characteristics of Class A system
(ERTMS) of the control-command and signalling subsystem of the trans-European conventional
rail system referred to in Directive 2001/16/EC of the European Parliament and of the Council.
[i.4] CENELEC EN 50121 (all parts): "Railway Applications - Electromagnetic Compatibility".
[i.5] ETSI EG 201 399 (V2.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
A guide to the production of candidate Harmonized Standards for application under the R&TTE
Directive".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
down-link: optional binary ASK- modulated transmission link from the OBE to trackside units
duty cycle: defined as the ratio, expressed as a percentage, of the maximum transmitter "on" time monitored over one
hour, relative to a one hour period
ETSI

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8 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
eurobalise: wayside transmission unit that uses the magnetic transponder technology
NOTE: Its main function is to transmit and/or receive signals through the air gap. The Eurobalise is a single
device mounted on the track, which communicates with a train passing over it.
integral antenna: permanent fixed antenna, which may be built-in, designed as an indispensable part of the equipment
magnetic transponder technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver for conveying data and energy
NOTE: In the Eurobalise transmission system context, it considers systems using the 27,095 MHz for Tele-
powering and 4,234 MHz for Up-link transmission.
On-Board Equipment (OBE): consists of antenna unit(s) (for magnetic transponder technology) and the Balise
transmission function
NOTE: It functionally matches the air-gap interface and is installed on a train.
RF carrier: fixed radio frequency prior to modulation
Tele-powering: signal transmitted by the OBE, which activates the Eurobalise upon passage
NOTE: The signal is normally an un-modulated RF carrier (CW). However, it may optionally be binary ASK-
modulated for the transmission of down-link data.
up-link: transmission link from the Eurobalise to the OBE
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
S Power Density
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ASK Amplitude Shift Keying
CW Continuous Wave
EUT Equipment Under Test
FSK Frequency Shift Keying
HS Harmonized Standard
OATS Open Area Test Site
OBE On-Board Equipment
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
SRD Short Range Device
VSWR Voltage Standing Wave Ratio
ETSI

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9 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
4 Technical Requirements Specification
4.1 Technical Requirements
4.1.1 OBE Transmitter Mask
4.1.1.1 Definition
This test only applies to the OBE.
The radiated H-field mask is defined in the direction of maximum field strength under specified conditions of
measurement.
4.1.1.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.1).
4.1.1.3 Limit
The limits of figure 1 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
+42 dBµA/m
+5 dBµA/m
f +200 kHz
f -200 kHz f -5 kHz f +5 kHz o
o
o o
-1 dBµA/m
f = 27.095 MHz
o
f +500 kHz
f -500 kHz
o
o

Figure 1: OBE transmitter mask
4.1.1.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.2 OBE Unwanted Emissions
4.1.2.1 Definition
This test only applies to the OBE. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.1.1.3.
4.1.2.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.2).
ETSI

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10 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
4.1.2.3 Limit
The limits in table 2 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 2: OBE unwanted emissions limits
Frequency: (f) Limit
44 dBµA/m at 9 kHz decreasing with logarithm of
9 kHz ≤ f < 150 kHz
frequency to 19 dBµA/m at 150 kHz
54 dBµA/m at 150 kHz decreasing with logarithm of
150 kHz ≤ f < 30 MHz
frequency to 4 dBµA/m at 30 MHz
79 dBµV/m at 30 MHz decreasing with logarithm of
30 MHz ≤ f ≤ 1 GHz
frequency to 54 dBµV/m at 1 GHz

4.1.2.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.3 Eurobalise Transmitter Mask
4.1.3.1 Definition
This test only applies to Eurobalises.
The radiated H-field uplink mask is defined in the direction of maximum field strength under specified conditions of
measurement.
4.1.3.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.3).
4.1.3.3 Limit
The limits of figure 2 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
17
7
-3
-13
-23
1 3 5 7 9
Frequency [MHz]


Figure 2: Eurobalise transmitter mask
ETSI
Field Strength [dBμA/m]

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11 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
The defined in-band frequency range is limited to the frequency range 4,234 MHz ± 1 MHz. The maximum value in the
graph of figure 2 is 9 dBµA/m.
NOTE: ERC Recommendation 70-03, annex 4 recommends a maximum duty cycle of 1 % for the Eurobalise
transmitter. This duty cycle can not be exceeded during normal operation due to the fact that the train
never stops above the Eurobalise, i.e. the train only stops after the Eurobalise has been passed. In
principle, it is impossible to exceed the duty cycle with moving trains due to the distance between trains
versus Eurobalise operating range.
The provider shall declare the maximum duty cycle to not exceed 1 %.
4.1.3.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.4 Eurobalise Unwanted Emissions
4.1.4.1 Definition
This test only applies to Eurobalises. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.1.1.3 and outside the frequency range 4,234 MHz
± 1 MHz as defined in clause 4.1.3.3.
4.1.4.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.4).
4.1.4.3 Limit
The limits in table 3 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 3: Eurobalise unwanted emissions limits
Frequency: (f) Limit
44 dBµA/m at 9 kHz decreasing with logarithm of
9 kHz ≤ f < 150 kHz
frequency to 19 dBµA/m at 150 kHz
54 dBµA/m at 150 kHz decreasing with logarithm of
150 kHz ≤ f < 30 MHz
frequency to 4 dBµA/m at 30 MHz
79 dBµV/m at 30 MHz decreasing with logarithm of
30 MHz ≤ f ≤ 1 GHz
frequency to 54 dBµV/m at 1 GHz

4.1.4.4 Maximum allowable measurement uncertainty
S
...

Draft ETSI EN 302 608 V1.1.1 (2007-12)
Harmonized European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short Range Devices (SRD);
Radio equipment for Eurobalise railway systems;
Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive

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2 Draft ETSI EN 302 608 V1.1.1 (2007-12)



Reference
DEN/ERM-TG28-0418
Keywords
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ETSI

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3 Draft ETSI EN 302 608 V1.1.1 (2007-12)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .5
1 Scope.6
2 References.6
2.1 Normative references.7
3 Definitions, symbols and abbreviations .7
3.1 Definitions.7
3.2 Symbols.8
3.3 Abbreviations.8
4 Technical Requirements Specification.8
4.1 Technical Requirements.8
4.1.1 OBE Transmitter Mask.8
4.1.1.1 Definition.8
4.1.1.2 Test Procedure.8
4.1.1.3 Limit.8
4.1.1.4 Maximum Allowable Measurement Uncertainty .9
4.1.2 OBE Unwanted Emissions.9
4.1.2.1 Definition.9
4.1.2.2 Test Procedure.9
4.1.2.3 Limit.9
4.1.2.4 Maximum Allowable Measurement Uncertainty .9
4.1.3 Eurobalise Transmitter Mask.9
4.1.3.1 Definition.9
4.1.3.2 Test Procedure.10
4.1.3.3 Limit.10
4.1.3.4 Maximum Allowable Measurement Uncertainty .10
4.1.4 Eurobalise Unwanted Emissions.10
4.1.4.1 Definition.10
4.1.4.2 Test Procedure.10
4.1.4.3 Limit.11
4.1.4.4 Maximum allowable measurement uncertainty.11
5 Test Conditions.11
5.1 General.11
5.2 Test Power Source.11
5.3 Normal Test Conditions .11
5.3.1 Normal Temperature and Humidity.11
5.3.2 Normal Test Power Source .12
5.3.2.1 Mains Voltage.12
5.3.2.2 Other Power Sources.12
5.4 Requirements for the Test Modulation.12
5.5 Choice of Equipment for Test Suites.12
5.6 Measuring Receiver.12
6 Measurement Uncertainty .13
7 Test Procedures for Essential Radio Test Suites .13
7.1 OBE Transmitter Mask.13
7.2 OBE Unwanted Emissions .14
7.3 Eurobalise Transmitter Mask .14
7.4 Eurobalise Unwanted Emissions .15
ETSI

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4 Draft ETSI EN 302 608 V1.1.1 (2007-12)
Annex A (normative): HS Requirements and conformance Test specifications Table (HS-
RTT).16
Annex B (normative): Radiated Measurement .18
B.1 Test sites and General Arrangements for Measurements Involving the use of Radiated Fields .18
B.1.1 General.18
B.1.2 Anechoic Chamber.18
B.1.3 Anechoic Chamber with a Conductive Ground Plane.19
B.1.4 Open Area Test Site (OATS) .20
B.1.5 Test Antenna.21
B.2 Guidance on the Use of Radiation Test Sites .21
B.2.1 General.21
B.2.2 Verification of the Test Site .22
B.2.3 Preparation of the EUT.22
B.2.4 Range Length.22
B.2.4.1 Far-field Length Above 30 MHz .22
B.2.4.2 Near-field and Far-field Length Below 30 MHz.22
B.2.5 Site Preparation.23
B.3 Coupling of Signals.23
B.3.1 General.23
B.3.2 Data Signals.23
B.4 Standard Test Position.23
Annex C (informative): E-fields in the Near Field at Low Frequencies .24
Annex D (normative): H-field Measurements and Limits at 3 m and 30 m.26
D.1 General.26
D.2 Limits for Measurements at 30 m Distance.26
D.3 Limits for Measurements at 3 m Distance.27
Annex E (informative): The EN title in the official languages .28
Annex F (informative): Bibliography.29
History .30

ETSI

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5 Draft ETSI EN 302 608 V1.1.1 (2007-12)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Public Enquiry phase
of the ETSI standards Two-step Approval Procedure.
The present document has been produced by ETSI in response to mandate M/364 from the European Commission
issued under Council Directive 98/34/EC (as amended) laying down a procedure for the provision of information in the
field of technical standards and regulations.
The present document is intended to become a Harmonized Standard, the reference of which will be published in the
Official Journal of the European Communities referencing the Directive 1999/5/EC of the European Parliament and of
the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual
recognition of their conformity ("the R&TTE Directive").
Technical specifications relevant to Directive 1999/5/EC are given in annex A.
These specifications are complementary with the system and interoperability requirements for these devices established
under Commission Decision 2004/447/EC.
In addition, relevant parts of EN 50121 are applicable for the electromagnetic compatibility of railway applications
(part 3-2 for the OBE and part 4 for the Eurobalise equipment).

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive. The modular
structure is shown in EG 201 399 (see bibliography).
The Eurobalise transmission system is defined by the specifications of the UNISIG consortium (see bibliography).
ETSI

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6 Draft ETSI EN 302 608 V1.1.1 (2007-12)
1 Scope
The present document covers the technical requirements for radio transmitters and receivers used in the Eurobalise
transmission system. The system is only used in railway systems.
It applies to the following equipment units:
a) the On-board Equipment (OBE) Tele-powering the Eurobalise; and
b) the Eurobalise that is always installed in between the rails.
The OBE comprises a transmitter (normally un-modulated) and a receiver fitted with an integral or dedicated antenna.
The Eurobalise FSK-modulated transmitter is Tele-powered by the OBE and has an integral antenna.
The Eurobalise transmission system operates in accordance with ERC Recommendation 70-03, annex 4.
These radio equipment types are capable of operating at the following frequencies as given in table 1.
Table 1: Radio communications frequencies
Radio communications frequencies
OBE transmit centre frequency 27,095 MHz
Eurobalise transmit centre frequency 4,234 MHz

The present document is intended to cover the provisions of Directive 1999/5/EC (R&TTE Directive) article 3.2, which
states that "… radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial/space
radio communications and orbital resources so as to avoid harmful interference".
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the purposes
of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
ETSI

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7 Draft ETSI EN 302 608 V1.1.1 (2007-12)
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TR 102 273 (2001-12) (all parts): "Electromagnetic compatibility and Radio spectrum
Matters (ERM): Improvement on radiated methods of measurement (using test site) and evaluation
of the corresponding measurement uncertainties".
[2] CISPR 16 (2006), (parts 1-1, 1-4 and 1-5): "Specification for radio disturbance and immunity
measuring apparatus and methods; Part 1: Radio disturbance and immunity measuring apparatus".
[3] ETSI TR 100 028 (2001-12) (all parts): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[4] ANSI C63.5 (2006): "American National Standard for Electromagnetic Compatibility - Radiated
Emission Measurements in Electromagnetic Interference (EMI) Control - Calibration of Antennas
(9 kHz to 40 GHz)".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
down-link: optional binary ASK- modulated transmission link from the OBE to trackside units
duty cycle: defined as the ratio, expressed as a percentage, of the maximum transmitter "on" time monitored over one
hour, relative to a one hour period
Eurobalise: A wayside transmission unit that uses the magnetic transponder technology. Its main function is to transmit
and/or receive signals through the air gap. The Eurobalise is a single device mounted on the track, which communicates
with a train passing over it.
integral antenna: permanent fixed antenna, which may be built-in, designed as an indispensable part of the equipment
magnetic transponder technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver for conveying data and energy. In the Eurobalise transmission system context, it considers systems using the
27,095 MHz for Tele-powering and 4,234 MHz for Up-link transmission.
On-Board Equipment (OBE): consists of antenna unit(s) (for magnetic transponder technology) and the Balise
transmission function. It functionally matches the air-gap interface and is installed on a train.
RF carrier: fixed radio frequency prior to modulation
Tele-powering: signal transmitted by the OBE, which activates the Eurobalise upon passage. The signal is normally an
un-modulated RF carrier (CW). However, it may optionally be binary ASK- modulated for the transmission of down-
link data.
up-link: transmission link from the Eurobalise to the OBE
ETSI

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8 Draft ETSI EN 302 608 V1.1.1 (2007-12)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
S Power Density
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ASK Amplitude Shift Keying
CW Continuous Wave
EUT Equipment Under Test
FSK Frequency Shift Keying
HS Harmonized Standard
OATS Open Area Test Site
OBE On-Board Equipment
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
SRD Short Range Device
VSWR Voltage Standing Wave Ratio
4 Technical Requirements Specification
4.1 Technical Requirements
4.1.1 OBE Transmitter Mask
4.1.1.1 Definition
This test only applies to the OBE.
The radiated H-field mask is defined in the direction of maximum field strength under specified conditions of
measurement.
4.1.1.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.1).
4.1.1.3 Limit
The limits of figure 1 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
ETSI

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9 Draft ETSI EN 302 608 V1.1.1 (2007-12)
+42 dBµA/m
+5 dBµA/m
f +200 kHz
f +5 kHz o
f -200 kHz f -5 kHz o
o o
-1 dBµA/m
f = 27.095 MHz
o
f +500 kHz
f -500 kHz o
o

Figure 1: OBE transmitter mask
4.1.1.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.2 OBE Unwanted Emissions
4.1.2.1 Definition
This test only applies to the OBE. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.1.1.3.
4.1.2.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.2).
4.1.2.3 Limit
The limits in table 2 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 2: OBE unwanted emissions limits
Frequency: (f) Limit
44 dBµA/m at 9 kHz decreasing with logarithm of
9 kHz ≤ f < 150 kHz
frequency to 19 dBµA/m at 150 kHz
54 dBµA/m at 150 kHz decreasing with logarithm of
150 kHz ≤ f < 30 MHz
frequency to 4 dBµA/m at 30 MHz
79 dBµV/m at 30 MHz decreasing with logarithm of
30 MHz ≤ f ≤ 1 GHz
frequency to 54 dBµV/m at 1 GHz

4.1.2.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.3 Eurobalise Transmitter Mask
4.1.3.1 Definition
This test only applies to Eurobalises.
ETSI

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10 Draft ETSI EN 302 608 V1.1.1 (2007-12)
The radiated H-field uplink mask is defined in the direction of maximum field strength under specified conditions of
measurement.
4.1.3.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.3).
4.1.3.3 Limit
The limits of figure 2 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
17
7
-3
-13
-23
7
1 3 5 9
Frequency [MHz]


Figure 2: Eurobalise transmitter mask
The defined in-band frequency range is limited to the frequency range 4,234 MHz ± 1 MHz. The maximum value in the
graph of figure 2 is 9 dBµA/m.
NOTE: ERC Recommendation 70-03, annex 4 recommends a maximum duty cycle of 1 % for the Eurobalise
transmitter. This duty cycle can not be exceeded during normal operation due to the fact that the train
never stops above the Eurobalise, i.e. the train only stops after the Eurobalise has been passed. In
principle, it is impossible to exceed the duty cycle with moving trains due to the distance between trains
versus Eurobalise operating range.
The provider shall declare the maximum duty cycle to not exceed 1 %.
4.1.3.4 Maximum Allowable Measurement Uncertainty
See table 5 in clause 6.
4.1.4 Eurobalise Unwanted Emissions
4.1.4.1 Definition
This test only applies to Eurobalises. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.1.1.3 and outside the frequency range 4,234 MHz
± 1 MHz as defined in clause 4.1.3.3.
4.1.4.2 Test Procedure
This test is performed using a radiated measurement (see clause 7.4).
ETSI
Field Strength [dBμA/m]

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11 Draft ETSI EN 302 608 V1.1.1 (2007-12)
4.1.4.3 Limit
The limits in table 3 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 3: Eurobalise unwanted emissions limits
Frequency: (f) Limit
44 dBµA/m at 9 kHz decreasing with logarithm of
9 kHz ≤ f < 150 kHz
frequency to 19 dBµA/m at 150 kHz
54 dBµA/m at 150 kHz decreasing with logarithm of
150 kHz ≤ f < 30 MHz
frequency to 4 dBµA/m at 30 MHz
79 dBµV/m at 30 MHz decreasing with logarithm of
30 MHz ≤ f ≤ 1 GHz
frequency to 54 dBµV/m at 1 GHz

4.1.4.4 Maximum allowable measurement uncertainty
See table 5 in clause 6.
5 Test Conditions
5.1 General
Testing shall be made under normal test conditions.
NOTE: The Eurobalise system components (OBE as well as the Eurobalise) are built for interoperability and the
UNISIG specifications apply over the full operating temperature range (including the spectrum masks).
The test conditions and procedures shall be as specified in clauses 5.2 and 5.3.
5.2 Test Power Source
The OBE equipment shall be tested using the appropriate test power source.
The test power source used shall be stated in the test report.
The Eurobalise is purely Tele-powered during the test.
During the tests, the power source of the equipment shall be replaced by an external test power source capable of
producing normal test voltages as specified in clause 5.3.2. The internal impedance of the external test power source
shall be low enough for its effect on the test results to be negligible. For the purpose of the tests, the voltage of the
external test power source shall be measured at the input terminals of the equipment. For radiated measurements any
external power leads should be so arranged so as not to affect the measurements.
During tests the test power source voltages shall be within a tolerance of < ±1 % relative to the voltage at the beginning
of each test. The value of this tolerance can be critical for certain measurements. Using a smaller tolerance will provide
a better uncertainty value for these measurements.
5.3 Normal Test Conditions
5.3.1 Normal Temperature and Humidity
The normal temperature and humidity conditions for tests shall be any convenient combination of tem
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