ETSI EN 302 608 V1.1.1 (2008-09)

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

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

Reference
DEN/ERM-TG28-0418
Keywords
radio, SRD, testing
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ETSI
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
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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

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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).
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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.
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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
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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
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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).
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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.
-3
-13
-23
1 3 5 7 9
Frequency [MHz]
Figure 2: Eurobalise transmitter mask
ETSI
Field Strength [dBμA/m]
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
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.
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12 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
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 temperature and
humidity within the following ranges:
• Temperature +15 °C to +35 °C;
• Relative humidity 20 % to 75 %.
5.3.2 Normal Test Power Source
5.3.2.1 Mains Voltage
The normal test voltage for equipment to be connected to the mains shall be the nominal mains voltage. For the purpose
of the present document, the nominal voltage shall be the declared voltage, or any of the declared voltages, for which
the equipment was designed.
The frequency of the test power source corresponding to the AC mains shall be between 49 Hz and 51 Hz.
5.3.2.2 Other Power Sources
For operation from other power sources, the normal test voltage shall be that declared by the equipment provider and
agreed by the test laboratory. Such values shall be stated in the test report.
5.4 Requirements for the Test Modulation
The OBE is un-modulated (CW) during testing. If the OBE has implemented the optional down-link modulation (binary
ASK), then testing shall occur with a modulated OBE as well. The Eurobalise is Tele-powered and the specified FSK
modulation applies. The information content shall be representative of normal use.
The manufacturer shall provide the means to operate the transmitter during the tests.
5.5 Choice of Equipment for Test Suites
The tests shall be carried out on one or more production models or equivalent preliminary models, as appropriate. If
testing is performed on (a) preliminary model(s), then the corresponding production models shall be identical to the
tested models in all respects relevant for the purposes of the present document.
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13 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
If equipment has several optional features that are considered to affect directly the RF parameters, then tests need only
be performed on the equipment configured with the considered worst case combination of features as declared by the
manufacturer.
The test shall be performed as a radiated test using the radiated measurement procedures.
The provider shall provide one or more samples of the equipment, as appropriate for testing. Additionally, technical
documentation and operating manuals, sufficient to make the test, shall be supplied.
5.6 Measuring Receiver
The term "measuring receiver" refers to a spectrum analyser. The bandwidth and detector type of the measuring receiver
are given in table 4.
Table 4: Measuring receiver
Frequency: (f) Detector type Spectrum analyzer bandwidth
9 kHz ≤ f < 150 kHz Quasi Peak 300 Hz
Quasi Peak 10 kHz
150 kHz ≤ f < 30 MHz
Quasi Peak 100 kHz
30 MHz ≤ f ≤ 1 GHz
6 Measurement Uncertainty
The interpretation of the results recorded in the test report for the measurements described in the present document shall
be as follows:
• the measured value related to the corresponding limit shall be used to decide whether an equipment meets the
requirements of the present document;
• the value of the measurement uncertainty for the measurement of each parameter shall be separately included
in the test report;
• the value of the measurement uncertainty should be, for each measurement, equal to or lower than the figures
in table 5.
Table 5: Absolute measurement uncertainties: maximum values
Parameter Uncertainty
Radiated field strength ±6 dB
Temperature
±1 °C
Humidity
±10 %
For the test methods, according to the present document, the measurement uncertainty figures shall be calculated in
accordance with TR 100 028 [3], and shall correspond to an expansion factor (coverage factor) k = 1,96 or k = 2 (which
provide confidence levels of respectively 95 % and 95,45 % in the case where the distributions characterizing the actual
measurement uncertainties are normal (Gaussian).
Table 5 is based on such expansion factors.
The particular expansion factor used for the evaluation of the measurement uncertainty shall be stated.
TR 102 273 [1] provides further information concerning the usage of test sites.
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14 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
7 Test Procedures for Essential Radio Test Suites
7.1 OBE Transmitter Mask
See clause 5.1 for the test conditions.
The measurements of the transmitter radiated H-field shall be made on one of the test sites specified in annex B. Any
measured values shall be at least 6 dB above the ambient noise level.
The OBE transmitter spectrum within the frequency range 27,095 MHz ± 500 kHz shall be determined and recorded.
The OBE Tele-powering signal (CW) is measured as follows.
Step 1 The H-field strength should be measured at 10 m distance by using quasi peak detector and a 10 kHz
resolution bandwidth. The result shall be recorded in the test report as the total field strength.
Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna
or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the
distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at
actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test
report. The H-field is measured with a shielded loop antenna connected to a measurement receiver. The measuring
bandwidth and detector type of the measurement receiver shall be in accordance with clause 5.6.
The spectrum analyser or equivalent shall be configured as follows unless otherwise stated:
• Resolution bandwidth: 10 kHz.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi-peak.
For equipment where the optional OBE down-link modulation is implemented (binary ASK modulation), the following
measurement shall be conducted:
Step 2 The spectrum of the transmitter is measured also with modulation in the same way as described in step 1
above. The result shall be recorded in the test report.
7.2 OBE Unwanted Emissions
See clause 5.1 for the test conditions.
The measuring receiver shall be tuned over the frequency range 9 kHz to 1 GHz, excluding the frequency range
27,095 MHz ± 500 kHz on which the transmitter is intended to operate.
At each frequency at which a relevant spurious signal is detected, the OBE under test and the test antenna shall be
rotated until maximum field strength is indicated on the measuring receiver. This level shall be noted.
For measuring equipment calibrated in dBμV/m, the reading should be reduced by 51,5 dB to be converted to dBμA/m,
or vice-versa.
The OBE unwanted emissions are measured as follows.
Step 1 The H-field strength is measured at 10 m distance by using quasi peak detector and the resolution
bandwidth as given in table 4 of clause 5.6. The results shall be recorded in the test report as the total field
strength.
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15 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna
or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the
distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at
actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test
report. The H-field is measured with a shielded loop antenna connected to a measurement receiver below 30 MHz. In
the frequency range from 30 MHz to 300 MHz a dipole or bi-conical antenna shall be used. Above 300 MHz a
log-periodic antenna shall be used. The measuring bandwidth and detector type of the measurement receiver shall be in
accordance with clause 5.6.
The spectrum analyser shall be configured as follows unless otherwise stated:
• Resolution bandwidth: 300 Hz, 10 kHz or 100 kHz in accordance with table 4 in clause 5.6.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi-peak.
For equipment where the optional OBE down-link modulation is implemented (binary ASK modulation), the following
measurement shall be conducted:
Step 2 The spectrum of the transmitter is measured also with modulation in the same way as described in step 1
above. The result shall be recorded in the test report.
7.3 Eurobalise Transmitter Mask
See clause 5.1 for the test conditions.
The measurements of the transmitter radiated H-field shall be made on one of the test sites specified in annex B. Any
measured values shall be at least 6 dB above the ambient noise level.
The Eurobalise transmitter spectrum centred at 4,234 MHz shall be measured down to a field strength value of
-23 dBµA/m at a distance of 10 m and be recorded. During the measurement, the Eurobalise will be Tele-powered.
However, a two step approach as defined below is also allowed.
1) Measure and record the maximum value(s) of the transmitter spectrum at a distance of 10 m.
2) Perform another relative measurement at a shorter distance in order to verify the overall shape of the spectrum.
The H-field strength is measured at 10 m distance (or using the two-step approach above) by using quasi peak detector
and a 10 kHz resolution bandwidth. The result is recorded in the test report as the total field strength.
Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna
or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the
distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at
actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test
report. The H-field is measured with a shielded loop antenna connected to a measurement receiver. The measuring
bandwidth and detector type of the measurement receiver shall be in accordance with clause 5.6.
The spectrum analyser or equivalent shall be configured as follows unless otherwise stated:
• Resolution bandwidth: 10 kHz.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi-peak.
ETSI
16 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
7.4 Eurobalise Unwanted Emissions
See clause 5.1 for the test conditions.
The measuring receiver shall be tuned over the frequency range 9 kHz to 1 GHz, except for the in-band frequency
ranges as defined in clauses 7.1 and 7.3.
At each frequency at which a relevant spurious signal is detected, the Eurobalise under test and the test antenna shall be
rotated until maximum field strength is indicated on the measuring receiver. This level shall be noted.
For measuring equipment calibrated in dBμV/m, the reading should be reduced by 51,5 dB to be converted to dBμA/m,
or vice-versa.
The Eurobalise unwanted emissions are measured as follows.
Step 1 The H-field strength is measured at 10 m distance by using quasi peak detector and the resolution
bandwidth as given in table 4 of clause 5.6. The results are recorded in the test report as the total field
strength.
Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna
or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the
distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at
actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test
report. The H-field is measured with a shielded loop antenna connected to a measurement receiver below 30 MHz. In
the frequency range from 30 MHz to 300 MHz a dipole antenna shall be used. Above 300 MHz a log-periodic antenna
shall be used. The measuring bandwidth and detector type of the measurement receiver shall be in accordance with
clause 5.6.
The spectrum analyser shall be configured as follows unless otherwise stated:
• Resolution bandwidth: 300 Hz, 10 kHz or 100 kHz in accordance with table 4 in clause 5.6.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi-peak.
ETSI
17 Final draft ETSI EN 302 608 V1.1.1 (2008-09)
Annex A (normative):
HS Requirements and conformance Test specifications
Table (HS-RTT)
The HS Requirements and conformance Test specifications Table (HS-RTT) in table A.1 serves a number of purposes,
as follows:
• it provides a statement of all the requirements in words and by cross reference to (a) specific clause(s) in the
present document or to (a) specific clause(s) in (a) specific referenced document(s);
• it provides a statement of all the test procedures corresponding to those requirements by cross reference to (a)
specific clause(s) in the present document or to (a) specific clause(s) in (a) specific referenced document(s);
• it qualifies each req
...

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

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

Reference
DEN/ERM-TG28-0418
Keywords
radio, SRD, testing
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ETSI
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
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
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
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
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
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
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
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
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.
-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]
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 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 temperature and
humidity within the following ranges:
• Temperature +15 °C to +35 °C;
ETSI
13 ETSI EN 302 608 V1.1.1 (2008-11)
• Relative humidity 20 % to 75 %.
5.3.2 Normal Test Power Source
5.3.2.1 Mains Voltage
The normal test voltage for equipment to be connected to the mains shall be the nominal mains voltage. For the purpose
of the present document, the nominal voltage shall be the declared voltage, or any of the declared voltages, for which
the equipment was designed.
The frequency of the test power source corresponding to the AC mains shall be between 49 Hz and 51 Hz.
5.3.2.2 Other Power Sources
For operation from other power sources, the normal test voltage shall be that declared by the equipment provider and
agreed by the test laboratory. Such values shall be stated in the test report.
5.4 Requirements for the Test Modulation
The OBE is un-modulated (CW) during testing. If the OBE has implemented the optional down-link modulation (binary
ASK), then testing shall occur with a modulated OBE as well. The Eurobalise is Tele-powered and the specified FSK
modulation applies. The information content shall be representative of normal use.
The manufacturer shall provide the means to operate the transmitter during the tests.
5.5 Choice of Equipment for Test Suites
The tests shall be carried out on one or more production models or equivalent preliminary models, as appropriate. If
testing is performed on (a) preliminary model(s), then the corresponding production models shall be identical to the
tested models in all respects relevant for the purposes of the present document.
If equipment has several optional features that are considered to affect directly the RF parameters, then tests need only
be performed on the equipment configured with the considered worst case combination of features as declared by the
manufacturer.
The test shall be performed as a radiated test using the radiated measurement procedures.
The provider shall provide one or more samples of the equipment, as appropriate for testing. Additionally, technical
documentation and operating manuals, sufficient to make the test, shall be supplied.
5.6 Measuring Receiver
The term "measuring receiver" refers to a spectrum analyser. The bandwidth and detector type of the measuring receiver
are given in table 4.
Table 4: Measuring receiver
Frequency: (f) Detector type Spectrum analyzer bandwidth
9 kHz ≤ f < 150 kHz Quasi Peak 300 Hz
Quasi Peak 10 kHz
150 kHz ≤ f < 30 MHz
Quasi Peak 100 kHz
30 MHz ≤ f ≤ 1 GHz
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14 ETSI EN 302 608 V1.1.1 (2008-11)
6 Measurement Uncertainty
The interpretation of the results recorded in the test report for the measurements described in the present document shall
be as follows:
• the measured value related to the corresponding limit shall be used to decide whether an equipment meets the
requirements of the present document;
• the value of the measurement uncertainty for the measurement of each parameter shall be separately included
in the test report;
• the value of the measurement uncertainty should be, for each measurement, equal to or lower than the figures
in table 5.
Table 5: Absolute measurement uncertainties: maximum values
Parameter Uncertainty
Radiated field strength ±6 dB
Temperature ±1 °C
Humidity
±10 %
For the test methods, according to the present document, the measurement uncertainty figures shall be calculated in
accordance with TR 100 028 [3], and shall correspond to an expansion factor (coverage factor) k = 1,96 or k = 2 (which
provide confidence levels of respectively 95 % and 95,45 % in the case where the distributions characterizing the actual
measurement uncertainties are normal (Gaussian).
Table 5 is based on such expansion factors.
The particular expansion factor used for the evaluation of the measurement uncertainty shall be stated.
TR 102 273 [1] provides further information concerning the usage of test sites.
7 Test Procedures for Essential Radio Test Suites
7.1 OBE Transmitter Mask
See clause 5.1 for the test conditions.
The measurements of the transmitter radiated H-field shall be made on one of the test sites specified in annex B. Any
measured values shall be at least 6 dB above the ambient noise level.
The OBE transmitter spectrum within the frequency range 27,095 MHz ± 500 kHz shall be determined and recorded.
The OBE Tele-powering signal (CW) is measured as follows.
Step 1 The H-field strength should be measured at 10 m distance by using quasi peak detector and a 10 kHz
resolution bandwidth. The result shall be recorded in the test report as the total field strength.
Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna
or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the
distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at
actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test
report. The H-field is measured with a shielded loop antenna connected to a measurement receiver. The measuring
bandwidth and detector type of the measurement receiver shall be in accordance with clause 5.6.
The spectrum analyser or equivalent shall be configured as follows unless otherwise stated:
• Resolution bandwidth: 10 kHz.
• Video bandwidth: Not less than the resolution bandwidth.
ETSI
15 ETSI EN 302 608 V1.1.1 (2008-11)
• Detector mode: Quasi-peak.
For equipment where the optional OBE down-link modulation is implemented (binary ASK modulation), the following
measurement shall be conducted:
Step 2 The spectrum of the transmitter is measured also with modulation in the same way as described in step 1
above. The result shall be recorded in the test report.
7.2 OBE Unwanted Emissions
See clause 5.1 for the test conditions.
The measuring receiver shall be tuned over the frequency range 9 kHz to 1 GHz, excluding the frequency range
27,095 MHz ± 500 kHz on which the transmitter is intended to operate.
At each frequency at which a relevant spurious signal is detected, the OBE under test and the test antenna shall be
rotated until maximum field strength is indicated on the measuring receiver. This level shall be noted.
For measuring equipment calibrated in dBμV/m, the reading should be reduced by 51,5 dB to be converted to dBμA/m,
or vice-versa.
The OBE unwanted emissions are measured as follows.
Step 1 The H-field strength is measured at 10 m distance by using quasi peak detector and the resolution
bandwidth as given in table 4 of clause 5.6. The results shall be recorded in the test report as the total field
strength.
Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna
or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the
distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at
actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test
report. The H-field is measured with a shielded loop antenna connected to a measurement receiver below 30 MHz. In
the frequency range from 30 MHz to 300 MHz a dipole or bi-conical antenna shall be used. Above 300 MHz a
log-periodic antenna shall be used. The measuring bandwidth and detector type of the measurement receiver shall be in
accordance with clause 5.6.
The spectrum analyser shall be configured as follows unless otherwise stated:
• Resolution bandwidth: 300 Hz, 10 kHz or 100 kHz in accordance with table 4 in clause 5.6.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi-peak.
For equipment where the optional OBE down-link modulation is implemented (binary ASK modulation), the following
measurement shall be conducted:
Step 2 The spectrum of the transmitter is measured also with modulation in the same way as described in step 1
above. The result shall be recorded in the test report.
7.3 Eurobalise Transmitter Mask
See clause 5.1 for the test conditions.
The measurements of the transmitter radiated H-field shall be made on one of the test sites specified in annex B. Any
measured values shall be at least 6 dB above the ambient noise level.
The Eurobalise transmitter spectrum centred at 4,234 MHz shall be measured down to a field strength value of
-23 dBµA/m at a distance of 10 m and be recorded. During the measurement, the Eurobalise will be Tele-powered.
However, a two step approach as defined below is also allowed.
1) Measure and record the maximum value(s) of the transmitter spectrum at a distance of 10 m.
ETSI
16 ETSI EN 302 608 V1.1.1 (2008-11)
2) Perform another relative measurement at a shorter distance in order to verify the overall shape of the spectrum.
The H-field strength is measured at 10 m distance (or using the two-step approach above) by using quasi peak detector
and a 10 kHz resolution bandwidth. The result is recorded in the test report as the total field strength.
Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna
or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the
distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at
actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test
report. The H-field is measured with a shielded loop antenna connected to a measurement receiver. The measuring
bandwidth and detector type of the measurement receiver shall be in accordance with clause 5.6.
The spectrum analyser or equivalent shall be configured as follows unless otherwise stated:
• Resolution bandwidth: 10 kHz.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi-peak.
7.4 Eurobalise Unwanted Emissions
See clause 5.1 for the test conditions.
The measuring receiver shall be tuned over the frequency range 9 kHz to 1 GHz, except for the in-band frequency
ranges as defined in clauses 7.1 and 7.3.
At each frequency at which a relevant spurious signal is detected, the Eurobalise under test and the test antenna shall be
rotated until maximum field strength is indicated on the measuring receiver. This level shall be noted.
For measuring equipment calibrated in dBμV/m, the reading should be reduced by 51,5 dB to be converted to dBμA/m,
or vice-versa.
The Eurobalise unwanted emissions are measured as follows.
Step 1 The H-field strength is measured at 10 m distance by using quasi peak detector and the resolution
bandwidth as given in table 4 of clause 5.6. The results are recorded in the test report as the total field
strength.
Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna
or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the
distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at
actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test
report. The H-field is measured with a shielded loop antenna connected to a measurement receiver below 30 MHz. In
the frequency range from 30 MHz to 300 MHz a dipole antenna shall be used. Above 300 MHz a log-periodic antenna
shall be used. The measuring bandwidth and detector type of the measurement receiver shall be in accordance with
clause 5.6.
The spectrum analyser shall be configured as follows unless otherwise stated:
• Resolution bandwidth: 300 Hz, 10 kHz or 100 kHz in accordance with table 4 in clause 5.6.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi-peak.
ETSI
17 ETSI EN 302 608 V1.1.1 (2008-11)
Annex A (normative):
HS Requirements and conformance Test specifications
Table (HS-RTT)
The HS Requirements and conformance Test specifications Table (HS-RTT) in table A.1 serves a number of purposes,
as follows:
• it provides a statement of all the requirements in words and by cross reference to (a) specific clause(s) in the
present document or to (a) specific clause(s) in (a) specific referenced document(s);
• it provides a
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.WHPH577(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 Directive45.020Železniška tehnika na splošnoRailway engineering in general33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:EN 302 608 Version 1.1.1SIST EN 302 608 V1.1.1:2009en01-marec-2009SIST EN 302 608 V1.1.1:2009SLOVENSKI
STANDARD
ETSI EN 302 608 V1.1.1 (2008-11)Harmonized European Standard (Telecommunications series) Electromagnetic compatibilityand Radio spectrum Matters (ERM);Short Range Devices (SRD);Radio equipment for Eurobalise railway systems;Harmonized EN covering the essential requirementsof article 3.2 of the R&TTE Directive SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 2
Reference DEN/ERM-TG28-0418 Keywords radio, SRD, testing ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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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.
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DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 3 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 SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 4 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 ETSI EN 302 608 V1.1.1 (2008-11) 5 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]. SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 6 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. SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 7 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)". SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 8 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 SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 9 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. fo -5 kHzfo -200 kHz fo -500 kHzfo +5 kHzfo +200 kHz fo +500 kHz+42 dBµA/m+5 dBµA/m-1 dBµA/mfo = 27.095 MHz 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. SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 10 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 9 kHz ≤ f < 150 kHz 44 dBµA/m at 9 kHz decreasing with logarithm of frequency to 19 dBµA/m at 150 kHz 150 kHz ≤ f < 30 MHz 54 dBµA/m at 150 kHz decreasing with logarithm of frequency to 4 dBµA/m at 30 MHz 30 MHz ≤ f ≤ 1 GHz 79 dBµV/m at 30 MHz decreasing with logarithm of 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). SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 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.
-3 9 7 5 1 3 -23 -13 7 17 Field Strength
[dBμA/m] 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). SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 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 9 kHz ≤ f < 150 kHz 44 dBµA/m at 9 kHz decreasing with logarithm of frequency to 19 dBµA/m at 150 kHz 150 kHz ≤ f < 30 MHz 54 dBµA/m at 150 kHz decreasing with logarithm of frequency to 4 dBµA/m at 30 MHz 30 MHz ≤ f ≤ 1 GHz 79 dBµV/m at 30 MHz decreasing with logarithm of 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 temperature and humidity within the following ranges: • Temperature +15 °C to +35 °C; SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 13 • Relative humidity 20 % to 75 %. 5.3.2 Normal Test Power Source 5.3.2.1 Mains Voltage The normal test voltage for equipment to be connected to the mains shall be the nominal mains voltage. For the purpose of the present document, the nominal voltage shall be the declared voltage, or any of the declared voltages, for which the equipment was designed. The frequency of the test power source corresponding to the AC mains shall be between 49 Hz and 51 Hz. 5.3.2.2 Other Power Sources For operation from other power sources, the normal test voltage shall be that declared by the equipment provider and agreed by the test laboratory. Such values shall be stated in the test report. 5.4 Requirements for the Test Modulation The OBE is un-modulated (CW) during testing. If the OBE has implemented the optional down-link modulation (binary ASK), then testing shall occur with a modulated OBE as well. The Eurobalise is Tele-powered and the specified FSK modulation applies. The information content shall be representative of normal use. The manufacturer shall provide the means to operate the transmitter during the tests. 5.5 Choice of Equipment for Test Suites The tests shall be carried out on one or more production models or equivalent preliminary models, as appropriate. If testing is performed on (a) preliminary model(s), then the corresponding production models shall be identical to the tested models in all respects relevant for the purposes of the present document. If equipment has several optional features that are considered to affect directly the RF parameters, then tests need only be performed on the equipment configured with the considered worst case combination of features as declared by the manufacturer. The test shall be performed as a radiated test using the radiated measurement procedures. The provider shall provide one or more samples of the equipment, as appropriate for testing. Additionally, technical documentation and operating manuals, sufficient to make the test, shall be supplied. 5.6 Measuring Receiver The term "measuring receiver" refers to a spectrum analyser. The bandwidth and detector type of the measuring receiver are given in table 4. Table 4: Measuring receiver Frequency: (f) Detector type Spectrum analyzer bandwidth 9 kHz ≤ f < 150 kHz Quasi Peak 300 Hz 150 kHz ≤ f < 30 MHz Quasi Peak 10 kHz 30 MHz ≤ f ≤ 1 GHz Quasi Peak 100 kHz
ETSI ETSI EN 302 608 V1.1.1 (2008-11) 14 6 Measurement Uncertainty The interpretation of the results recorded in the test report for the measurements described in the present document shall be as follows: • the measured value related to the corresponding limit shall be used to decide whether an equipment meets the requirements of the present document; • the value of the measurement uncertainty for the measurement of each parameter shall be separately included in the test report; • the value of the measurement uncertainty should be, for each measurement, equal to or lower than the figures in table 5. Table 5: Absolute measurement uncertainties: maximum values Parameter Uncertainty Radiated field strength ±6 dB Temperature ±1 °C Humidity ±10 %
For the test methods, according to the present document, the measurement uncertainty figures shall be calculated in accordance with TR 100 028 [3], and shall correspond to an expansion factor (coverage factor) k = 1,96 or k = 2 (which provide confidence levels of respectively 95 % and 95,45 % in the case where the distributions characterizing the actual measurement uncertainties are normal (Gaussian). Table 5 is based on such expansion factors. The particular expansion factor used for the evaluation of the measurement uncertainty shall be stated. TR 102 273 [1] provides further information concerning the usage of test sites. 7 Test Procedures for Essential Radio Test Suites 7.1 OBE Transmitter Mask See clause 5.1 for the test conditions. The measurements of the transmitter radiated H-field shall be made on one of the test sites specified in annex B. Any measured values shall be at least 6 dB above the ambient noise level. The OBE transmitter spectrum within the frequency range 27,095 MHz ± 500 kHz shall be determined and recorded. The OBE Tele-powering signal (CW) is measured as follows. Step 1 The H-field strength should be measured at 10 m distance by using quasi peak detector and a 10 kHz resolution bandwidth. The result shall be recorded in the test report as the total field strength. Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test report. The H-field is measured with a shielded loop antenna connected to a measurement receiver. The measuring bandwidth and detector type of the measurement receiver shall be in accordance with clause 5.6. The spectrum analyser or equivalent shall be configured as follows unless otherwise stated: • Resolution bandwidth: 10 kHz. • Video bandwidth: Not less than the resolution bandwidth. SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 15 • Detector mode: Quasi-peak. For equipment where the optional OBE down-link modulation is implemented (binary ASK modulation), the following measurement shall be conducted: Step 2 The spectrum of the transmitter is measured also with modulation in the same way as described in step 1 above. The result shall be recorded in the test report. 7.2 OBE Unwanted Emissions See clause 5.1 for the test conditions. The measuring receiver shall be tuned over the frequency range 9 kHz to 1 GHz, excluding the frequency range 27,095 MHz ± 500 kHz on which the transmitter is intended to operate. At each frequency at which a relevant spurious signal is detected, the OBE under test and the test antenna shall be rotated until maximum field strength is indicated on the measuring receiver. This level shall be noted. For measuring equipment calibrated in dBμV/m, the reading should be reduced by 51,5 dB to be converted to dBμA/m, or vice-versa. The OBE unwanted emissions are measured as follows. Step 1 The H-field strength is measured at 10 m distance by using quasi peak detector and the resolution bandwidth as given in table 4 of clause 5.6. The results shall be recorded in the test report as the total field strength. Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test report. The H-field is measured with a shielded loop antenna connected to a measurement receiver below 30 MHz. In the frequency range from 30 MHz to 300 MHz a dipole or bi-conical antenna shall be used. Above 300 MHz a log-periodic antenna shall be used. The measuring bandwidth and detector type of the measurement receiver shall be in accordance with clause 5.6. The spectrum analyser shall be configured as follows unless otherwise stated: • Resolution bandwidth: 300 Hz, 10 kHz or 100 kHz in accordance with table 4 in clause 5.6. • Video bandwidth: Not less than the resolution bandwidth. • Detector mode: Quasi-peak. For equipment where the optional OBE down-link modulation is implemented (binary ASK modulation), the following measurement shall be conducted: Step 2 The spectrum of the transmitter is measured also with modulation in the same way as described in step 1 above. The result shall be recorded in the test report. 7.3 Eurobalise Transmitter Mask See clause 5.1 for the test conditions. The measurements of the transmitter radiated H-field shall be made on one of the test sites specified in annex B. Any measured values shall be at least 6 dB above the ambient noise level. The Eurobalise transmitter spectrum centred at 4,234 MHz shall be measured down to a field strength value of -23 dBµA/m at a distance of 10 m and be recorded. During the measurement, the Eurobalise will be Tele-powered. However, a two step approach as defined below is also allowed. 1) Measure and record the maximum value(s) of the transmitter spectrum at a distance of 10 m. SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 16 2) Perform another relative measurement at a shorter distance in order to verify the overall shape of the spectrum. The H-field strength is measured at 10 m distance (or using the two-step approach above) by using quasi peak detector and a 10 kHz resolution bandwidth. The result is recorded in the test report as the total field strength. Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test report. The H-field is measured with a shielded loop antenna connected to a measurement receiver. The measuring bandwidth and detector type of the measurement receiver shall be in accordance with clause 5.6. The spectrum analyser or equivalent shall be configured as follows unless otherwise stated: • Resolution bandwidth: 10 kHz. • Video bandwidth: Not less than the resolution bandwidth. • Detector mode: Quasi-peak. 7.4 Eurobalise Unwanted Emissions See clause 5.1 for the test conditions. The measuring receiver shall be tuned over the frequency range 9 kHz to 1 GHz, except for the in-band frequency ranges as defined in clauses 7.1 and 7.3. At each frequency at which a relevant spurious signal is detected, the Eurobalise under test and the test antenna shall be rotated until maximum field strength is indicated on the measuring receiver. This level shall be noted. For measuring equipment calibrated in dBμV/m, the reading should be reduced by 51,5 dB to be converted to dBμA/m, or vice-versa. The Eurobalise unwanted emissions are measured as follows.
Step 1 The H-field strength is measured at 10 m distance by using quasi peak detector and the resolution bandwidth as given in table 4 of clause 5.6. The results are recorded in the test report as the total field strength. Where a measurement distance of 10 m is not practical, e.g. due to physical size of the equipment including the antenna or with use of special field cancelling antenna, then other distances may be used. When another distance is used, the distance used and the field strength value measured shall be stated in the test report. In this case, the measured value at actual test distance shall be extrapolated to 10 m according to annex D, and these calculations shall be stated in the test report. The H-field is measured with a shielded loop antenna connected to a measurement receiver below 30 MHz. In the frequency range from 30 MHz to 300 MHz a dipole antenna shall be used. Above 300 MHz a log-periodic antenna shall be used. The measuring bandwidth and detector type of the measurement receiver shall be in accordance with clause 5.6. The spectrum analyser shall be configured as follows unless otherwise stated: • Resolution bandwidth: 300 Hz, 10 kHz or 100 kHz in accordance with table 4 in clause 5.6. • Video bandwidth: Not less than the resolution bandwidth. • Detector mode: Quasi-peak. SIST EN 302 608 V1.1.1:2009

ETSI ETSI EN 302 608 V1.1.1 (2008-11) 17 Annex A (normative): HS Requirements and conformance Test specifications Table (HS-RTT) The HS Requirements and conformance Test specifications Table (HS-RTT) in table A.1 serves a number of purposes, as follows: • it provides a statement of all the requirements in words and by cross reference to (a) specific clause(s) in the present document or to (a) specific clause(s) in (a) specific referenced document(s); • it provides a statement of all the test procedures corresponding to those requirements by cross reference to (a) specific clause(s) in the present document or to (a) specific clause(s) in (a) specific referenced document(s); • it qualifies each requirement to be either: - Unconditional: meaning that the requirement ap
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