SIST EN 302 609 V1.1.1:2009
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Short Range Devices (SRD) - Radio equipment for Euroloop railway systems - Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Short Range Devices (SRD) - Radio equipment for Euroloop railway systems - Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
The present document covers the technical requirements for radio transmitters and receivers used in the Euroloop transmission system. The system is only used in railway systems. It applies to the following two equipment units as is shown in figure 1:
The On-Board Equipment (OBE) receiving the Euroloop signal and the OBE comprises a receiver fitted with a dedicated antenna.
The Track-Side Equipment (Euroloop) transmitting the Euroloop signal that is always installed in an inner or outer foot of a rail. The Euroloop comprises DSSS-BPSK-modulated transmitter fitted with a dedicated antenna. It is always switched on but is only transmitting in the presence of a train. The present document is intended to cover the provisions of Directive 1999/5/EC [i.6] (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".
Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) - Naprave kratkega dosega (SRD) - Radijska oprema za železniške sisteme Euroloop - Harmonizirani EN, ki zajema bistvene zahteve člena 3.2 direktive R&TTE
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Electromagnetic compatibility and Radio spectrum Matters (ERM) - Short Range Devices (SRD) - Radio equipment for Euroloop 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 302 609 Version 1.1.1SIST EN 302 609 V1.1.1:2009en01-marec-2009SIST EN 302 609 V1.1.1:2009SLOVENSKI
STANDARD
SIST EN 302 609 V1.1.1:2009
ETSI EN 302 609 V1.1.1 (2008-11)Harmonized European Standard (Telecommunications series) Electromagnetic compatibilityand Radio spectrum Matters (ERM);Short Range Devices (SRD);Radio equipment for Euroloop railway systems;Harmonized EN covering the essential requirementsof article 3.2 of the R&TTE Directive SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 2
Reference DEN/ERM-TG28-0419 Keywords radio, SRD, testing ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http://portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2008. All rights reserved.
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 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 3 Contents Intellectual Property Rights . 5 Foreword . 5 Introduction . 5 1 Scope . 6 2 References . 7 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 OBE unwanted emissions . 9 4.1.1 Definition . 9 4.1.2 Test procedure . 9 4.1.3 Limit . 9 4.2 Euroloop field strength . 9 4.2.1 Definition . 9 4.2.2 Test procedure . 9 4.2.3 Limit . 9 4.3 Euroloop transmitter mask . 9 4.3.1 Definition . 9 4.3.2 Test procedure . 9 4.3.3 Limit . 10 4.4 Maximum allowable measurement uncertainty . 10 5 Test conditions . 10 5.1 Test conditions . 10 5.2 Test power source . 10 5.3 Normal test conditions . 11 5.3.1 Normal temperature and humidity . 11 5.3.2 Normal test power source . 11 5.3.2.1 Mains voltage . 11 5.3.2.2 Other power sources . 11 5.4 Requirements for the Euroloop test modulation . 11 5.5 Choice of equipment for test suites . 11 5.5.1 Choice of model . 11 5.6 Measuring receiver . 12 6 Measurement uncertainty . 12 7 Test procedures for essential radio test suites . 12 7.1 OBE unwanted emissions . 12 7.2 Euroloop transmitter conducted measurements . 13 7.3 Euroloop field strength measurements . 13 Annex A (normative): HS Requirements and conformance Test specifications Table (HS-RTT) . 15 Annex B (informative): The EN title in the official languages . 17 Annex C (normative): Radiated measurement . 18 Annex D (normative): Field strength measurements along the Euroloop . 19 SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 4 Annex E (informative): E-fields in the near field at low frequencies . 20 Annex F (normative): H-field measurements and limits at 3 m and 30 m . 22 F.1 Limits for measurements at 30 m distance . 22 F.2 Limits for measurements at 3 m distance . 23 Annex G (informative): Bibliography . 24 History . 25
SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 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 a mandate from the European Commission issued under Council Directive 98/34/EC [i.5] (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.6] 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.6] are given in annex A. The Euroloop transmission system operates in accordance with ERC Recommendation 70-03, annex 4. These specifications are complementary with the system and interoperability requirements for these devices established under Commission Decision 2004/447/EC [i.7].
National transposition dates Date of adoption of this EN: 28 October 2008 Date of latest announcement of this EN (doa): 31 January 2009 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 July 2009 Date of withdrawal of any conflicting National Standard (dow): 31 July 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.2]. The Euroloop communication system is defined by the specifications of the UNISIG consortia [i.3]. SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 6 1 Scope The present document covers the technical requirements for radio transmitters and receivers used in the Euroloop transmission system. The system is only used in railway systems. It applies to the following two equipment units as is shown in figure 1: • The On-Board Equipment (OBE) receiving the Euroloop signal and the OBE comprises a receiver fitted with a dedicated antenna. • The Track-Side Equipment (Euroloop) transmitting the Euroloop signal that is always installed in an inner or outer foot of a rail. AntennaTrain Control SystemLine side Electronic UnitInterlockingEuroloop cablewake-up Receiver Transmitter Figure 1: Euroloop situation on railway track The Euroloop comprises DSSS-BPSK-modulated transmitter fitted with a dedicated antenna. It is always switched on but is only transmitting in the presence of a train. These radio equipment types are capable of operating at the following frequencies as given below in table 1. Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands OBE receive centre frequency 13,547 MHz Euroloop receiver centre frequency 27,095 MHz Euroloop transmit centre frequency 13,547 MHz Euroloop transmit modulation BPSK, DSSS chip rate 4,516 MHz
The present document is intended to cover the provisions of Directive 1999/5/EC [i.6] (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. SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 7 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. 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 100 028 (2001) (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics". [2] ERTMS/ETCS - CLASS 1, SUBSET-044 FFFIS for Euroloop. 2.2 Informative references The following referenced documents are not essential to the use of the ETSI deliverable 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] ETSI TR 102 273 (2001) (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". [i.2] 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.3] 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.4] ETSI EN 302 608 (V1.1.1): "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". [i.5] 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. SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 8 [i.6] 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.7] 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. 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 euroloop: wayside transmission unit that uses the magnetic transmission technology NOTE: Its main function is to transmit signals through the air gap. The Euroloop is a single device mounted on the track, which communicates with a train passing over it. magnetic transmission technology: method that uses magnetic coupling in the air gap between a transmitter and a receiver NOTE: In the Euroloop transmission system context, it considers systems using the 13,547 MHz for Uplink (track to train) transmission. rf carrier: fixed radio frequency prior to modulation uplink: transmission link from the Euroloop to the OBE 3.2 Symbols For the purposes of the present document, the following symbols apply: f Frequency fH Highest frequency of the power envelope fL Lowest frequency of the power envelope Ω ohm R Distance λ wavelength 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: BPSK Binary Phase Shift Keying dB deciBel DSSS Direct Sequence Spread Spectrum OBE On-Board Equipment R&TTE Radio and Telecommunications Terminal Equipment RF Radio Frequency RMS Root Mean Square SRD Short Range Device VSWR Voltage Standing Wave Ratio SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 9 4 Technical requirements specification 4.1 OBE unwanted emissions 4.1.1 Definition This test only applies to the OBE. NOTE: Eurobalise-OBU tele-powering is used for wake-up of the Euroloop. The Eurobalise OBE transmitter mask is defined in EN 302 608 [i.4]. 4.1.2 Test procedure This test is performed using a radiated measurement for frequencies below 30 MHz and a conducted measurement for frequencies from 30 MHz to 1 000 MHz (see clause 7.1). 4.1.3 Limit The spurious components between 9 kHz and 10 MHz shall not exceed a generated H-field at a distance of 10 m of 5,5 dBµA/m at 9 kHz descending 3 dB/oct. and -22 dBµA/m between 10 MHz and 30 MHz measured in 10 kHz bandwidth. The spurious components above 30 MHz shall not exceed the conducted power of 2 nW into 50 Ω resistive load. 4.2 Euroloop field strength 4.2.1 Definition This test only applies to the Euroloop transmitter. 4.2.2 Test procedure This test is performed using a radiated measurement (see clause 7.3). 4.2.3 Limit The transmitted magnetic field strength shall not exceed -7 dBµA/m at 10 m distance within the frequency range of 11,1 MHz to 16,0 MHz measured in a bandwidth of 10 kHz spatially averaged over any 200 m length of the loop. 4.3 Euroloop transmitter mask 4.3.1 Definition This test only applies to Euroloop transmitters. 4.3.2 Test procedure This test is performed using conducted measurement (see clause 7.2). SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 10 4.3.3 Limit The measured spectrum (field strength) shall not exceed the relative frequency mask values of figure 2. 1101001.10340302010010Frequency, MHzRelative Magnitude, dBc11,1MHz0dBc16,0MHz0dBc7,3MHz-23dBc23MHz-23dBc30MHz-35dBc1000MHz-40dBc1,0MHz-37dBc Figure 2: Euroloop transmitter spectrum and spurious mask The limit at 1 MHz shall also apply for frequencies below 1 MHz. 4.4 Maximum allowable measurement uncertainty See clause 6, table 3. 5 Test conditions 5.1 Test conditions Testing shall be made under normal test conditions. NOTE: The Euroloop system components (OBE as well as the Euroloop) 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 to 5.6. 5.2 Test power source The OBE and Euroloop equipment shall be tested using the appropriate test power source. The test power source used shall be stated in the test report. 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 clauses 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. SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 11 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 %. The test conditions are only for the test equipment and not for the installed Euroloop system. 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 Euroloop test modulation The applied DSSS code during tests shall be the Euroloop test-code #15 specified in SUBSET-044 [2]. The manufacturer shall provide the means to operate the transmitter during the tests. 5.5 Choice of equipment for test suites 5.5.1 Choice of model 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 tests shall be performed as radiated - and conducted test using the appropriate measurement procedures. The manufacturer 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. SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 12 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 2 unless otherwise specified. Table 2: Measuring receiver Frequency: (f) Detector type Spectrum analyzer bandwidth 9 kHz ≤ f < 150 kHz RMS 300 Hz 150 kHz ≤ f < 30 MHz RMS 10 kHz 30 MHz ≤ f ≤ 1 000 MHz RMS 100 kHz
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 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 3. Table 3: Absolute measurement uncertainties: maximum values Parameter Uncertainty Radiated field strength ±6 dB Conducted RF power ±1,25 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 [1] 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 4 is based on such expansion factors. The particular expansion factor used for the evaluation of the measurement uncertainty shall be stated. TR 102 273 [i.1] provides further information concerning the usage of test sites. 7 Test procedures for essential radio test suites 7.1 OBE unwanted emissions
For the test conditions, see clause 5.1. The emissions shall be measured over the frequency range 1 MHz to 1 000 MHz. At each frequency at which a relevant spurious signal is detected the OBE under test and the test antenna shall be rotated around the vertical axle until maximum field strength is indicated on the measuring receiver. This level shall be noted. SIST EN 302 609 V1.1.1:2009
ETSI ETSI EN 302 609 V1.1.1 (2008-11) 13 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 spectrum analyser shall be configured as follows unless otherwise stated: • Resolution bandwidth: In accordance with table 2 in clause 5.6. • Video bandwidth: Not less than the resolution bandwidth. • Detector mode: Quasi Peak. The OBE unwanted emissions are measured: Step 1 For frequencies below 30 MHz the H-field strength shall be measured at 10 m distance by using Quasi Peak detector and the resolution bandwidth as given in table 2 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 cas
...
ETSI EN 302 609 V1.1.1 (2008-11)
Harmonized European Standard (Telecommunications series)
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short Range Devices (SRD);
Radio equipment for Euroloop railway systems;
Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive
---------------------- Page: 1 ----------------------
2 ETSI EN 302 609 V1.1.1 (2008-11)
Reference
DEN/ERM-TG28-0419
Keywords
radio, SRD, testing
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2008.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI EN 302 609 V1.1.1 (2008-11)
Contents
Intellectual Property Rights . 5
Foreword . 5
Introduction . 5
1 Scope . 6
2 References . 7
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 OBE unwanted emissions . 9
4.1.1 Definition . 9
4.1.2 Test procedure . 9
4.1.3 Limit . 9
4.2 Euroloop field strength . 9
4.2.1 Definition . 9
4.2.2 Test procedure . 9
4.2.3 Limit . 9
4.3 Euroloop transmitter mask . 9
4.3.1 Definition . 9
4.3.2 Test procedure . 9
4.3.3 Limit . 10
4.4 Maximum allowable measurement uncertainty . 10
5 Test conditions . 10
5.1 Test conditions . 10
5.2 Test power source . 10
5.3 Normal test conditions . 11
5.3.1 Normal temperature and humidity . 11
5.3.2 Normal test power source . 11
5.3.2.1 Mains voltage . 11
5.3.2.2 Other power sources . 11
5.4 Requirements for the Euroloop test modulation . 11
5.5 Choice of equipment for test suites . 11
5.5.1 Choice of model . 11
5.6 Measuring receiver . 12
6 Measurement uncertainty . 12
7 Test procedures for essential radio test suites . 12
7.1 OBE unwanted emissions . 12
7.2 Euroloop transmitter conducted measurements . 13
7.3 Euroloop field strength measurements . 13
Annex A (normative): HS Requirements and conformance Test specifications Table (HS-
RTT) . 15
Annex B (informative): The EN title in the official languages . 17
Annex C (normative): Radiated measurement . 18
Annex D (normative): Field strength measurements along the Euroloop . 19
ETSI
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4 ETSI EN 302 609 V1.1.1 (2008-11)
Annex E (informative): E-fields in the near field at low frequencies . 20
Annex F (normative): H-field measurements and limits at 3 m and 30 m . 22
F.1 Limits for measurements at 30 m distance . 22
F.2 Limits for measurements at 3 m distance . 23
Annex G (informative): Bibliography . 24
History . 25
ETSI
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5 ETSI EN 302 609 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 a mandate from the European Commission issued
under Council Directive 98/34/EC [i.5] (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.6] 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.6] are given in annex A.
The Euroloop transmission system operates in accordance with ERC Recommendation 70-03, annex 4.
These specifications are complementary with the system and interoperability requirements for these devices established
under Commission Decision 2004/447/EC [i.7].
National transposition dates
Date of adoption of this EN: 28 October 2008
Date of latest announcement of this EN (doa): 31 January 2009
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 July 2009
Date of withdrawal of any conflicting National Standard (dow): 31 July 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.2].
The Euroloop communication system is defined by the specifications of the UNISIG consortia [i.3].
ETSI
---------------------- Page: 5 ----------------------
6 ETSI EN 302 609 V1.1.1 (2008-11)
1 Scope
The present document covers the technical requirements for radio transmitters and receivers used in the Euroloop
transmission system. The system is only used in railway systems.
It applies to the following two equipment units as is shown in figure 1:
• The On-Board Equipment (OBE) receiving the Euroloop signal and the OBE comprises a receiver fitted with a
dedicated antenna.
• The Track-Side Equipment (Euroloop) transmitting the Euroloop signal that is always installed in an inner or
outer foot of a rail.
Interlocking
Train Control
System
Line side Electronic Unit
wake-up
Transmitter
Antenna
Receiver
Euroloop cable
Figure 1: Euroloop situation on railway track
The Euroloop comprises DSSS-BPSK-modulated transmitter fitted with a dedicated antenna. It is always switched on
but is only transmitting in the presence of a train.
These radio equipment types are capable of operating at the following frequencies as given below in table 1.
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
OBE receive centre frequency 13,547 MHz
Euroloop receiver centre frequency 27,095 MHz
Euroloop transmit centre frequency 13,547 MHz
Euroloop transmit modulation BPSK, DSSS chip rate 4,516 MHz
The present document is intended to cover the provisions of Directive 1999/5/EC [i.6] (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.
ETSI
---------------------- Page: 6 ----------------------
7 ETSI EN 302 609 V1.1.1 (2008-11)
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.
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 100 028 (2001) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[2] ERTMS/ETCS - CLASS 1, SUBSET-044 FFFIS for Euroloop.
2.2 Informative references
The following referenced documents are not essential to the use of the ETSI deliverable 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] ETSI TR 102 273 (2001) (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".
[i.2] 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.3] 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.4] ETSI EN 302 608 (V1.1.1): "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".
[i.5] 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.
ETSI
---------------------- Page: 7 ----------------------
8 ETSI EN 302 609 V1.1.1 (2008-11)
[i.6] 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.7] 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.
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
euroloop: wayside transmission unit that uses the magnetic transmission technology
NOTE: Its main function is to transmit signals through the air gap. The Euroloop is a single device mounted on
the track, which communicates with a train passing over it.
magnetic transmission technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver
NOTE: In the Euroloop transmission system context, it considers systems using the 13,547 MHz for Uplink
(track to train) transmission.
rf carrier: fixed radio frequency prior to modulation
uplink: transmission link from the Euroloop to the OBE
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
f Highest frequency of the power envelope
H
f Lowest frequency of the power envelope
L
Ω ohm
R Distance
λ wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
BPSK Binary Phase Shift Keying
dB deciBel
DSSS Direct Sequence Spread Spectrum
OBE On-Board Equipment
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
RMS Root Mean Square
SRD Short Range Device
VSWR Voltage Standing Wave Ratio
ETSI
---------------------- Page: 8 ----------------------
9 ETSI EN 302 609 V1.1.1 (2008-11)
4 Technical requirements specification
4.1 OBE unwanted emissions
4.1.1 Definition
This test only applies to the OBE.
NOTE: Eurobalise-OBU tele-powering is used for wake-up of the Euroloop. The Eurobalise OBE transmitter
mask is defined in EN 302 608 [i.4].
4.1.2 Test procedure
This test is performed using a radiated measurement for frequencies below 30 MHz and a conducted measurement for
frequencies from 30 MHz to 1 000 MHz (see clause 7.1).
4.1.3 Limit
The spurious components between 9 kHz and 10 MHz shall not exceed a generated H-field at a distance of 10 m of
5,5 dBµA/m at 9 kHz descending 3 dB/oct. and -22 dBµA/m between 10 MHz and 30 MHz measured in 10 kHz
bandwidth.
The spurious components above 30 MHz shall not exceed the conducted power of 2 nW into 50 Ω resistive load.
4.2 Euroloop field strength
4.2.1 Definition
This test only applies to the Euroloop transmitter.
4.2.2 Test procedure
This test is performed using a radiated measurement (see clause 7.3).
4.2.3 Limit
The transmitted magnetic field strength shall not exceed -7 dBµA/m at 10 m distance within the frequency range of
11,1 MHz to 16,0 MHz measured in a bandwidth of 10 kHz spatially averaged over any 200 m length of the loop.
4.3 Euroloop transmitter mask
4.3.1 Definition
This test only applies to Euroloop transmitters.
4.3.2 Test procedure
This test is performed using conducted measurement (see clause 7.2).
ETSI
---------------------- Page: 9 ----------------------
10 ETSI EN 302 609 V1.1.1 (2008-11)
4.3.3 Limit
The measured spectrum (field strength) shall not exceed the relative frequency mask values of figure 2.
10
11,1MHz 16,0MHz
0dBc 0dBc
0
10
7,3MHz
20
-23dBc 23MHz
-23dBc
30MHz
30
-35dBc 1000MHz
1,0MHz -40dBc
-37dBc
40
3
.
1 10 100 1 10
Frequency, MHz
Figure 2: Euroloop transmitter spectrum and spurious mask
The limit at 1 MHz shall also apply for frequencies below 1 MHz.
4.4 Maximum allowable measurement uncertainty
See clause 6, table 3.
5 Test conditions
5.1 Test conditions
Testing shall be made under normal test conditions.
NOTE: The Euroloop system components (OBE as well as the Euroloop) 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 to 5.6.
5.2 Test power source
The OBE and Euroloop equipment shall be tested using the appropriate test power source.
The test power source used shall be stated in the test report.
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 clauses 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.
ETSI
Relative Magnitude, dBc
---------------------- Page: 10 ----------------------
11 ETSI EN 302 609 V1.1.1 (2008-11)
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 %.
The test conditions are only for the test equipment and not for the installed Euroloop system.
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 Euroloop test modulation
The applied DSSS code during tests shall be the Euroloop test-code #15 specified in SUBSET-044 [2].
The manufacturer shall provide the means to operate the transmitter during the tests.
5.5 Choice of equipment for test suites
5.5.1 Choice of model
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 tests shall be performed as radiated - and conducted test using the appropriate measurement procedures.
The manufacturer 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.
ETSI
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12 ETSI EN 302 609 V1.1.1 (2008-11)
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 2 unless otherwise specified.
Table 2: Measuring receiver
Frequency: (f) Detector type Spectrum analyzer bandwidth
9 kHz ≤ f < 150 kHz RMS 300 Hz
RMS 10 kHz
150 kHz ≤ f < 30 MHz
RMS 100 kHz
30 MHz ≤ f ≤ 1 000 MHz
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 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 3.
Table 3: Absolute measurement uncertainties: maximum values
Parameter Uncertainty
Radiated field strength ±6 dB
Conducted RF power ±1,25 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 [1] 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 4 is based on such expansion factors.
The particular expansion factor used for the evaluation of the measurement uncertainty shall be stated.
TR 102 273 [i.1] provides further information concerning the usage of test sites.
7 Test procedures for essential radio test suites
7.1 OBE unwanted emissions
For the test conditions, see clause 5.1.
The emissions shall be measured over the frequency range 1 MHz to 1 000 MHz.
At each frequency at which a relevant spurious signal is detected the OBE under test and the test antenna shall be
rotated around the vertical axle until maximum field strength is indicated on the measuring receiver. This level shall be
noted.
ETSI
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13 ETSI EN 302 609 V1.1.1 (2008-11)
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 spectrum analyser shall be configured as follows unless otherwise stated:
• Resolution bandwidth: In accordance with table 2 in clause 5.6.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi Peak.
The OBE unwanted emissions are measured:
Step 1 For frequencies below 30 MHz the H-field strength shall be measured at 10 m distance by using Quasi
Peak detector and the resolution bandwidth as given in table 2 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 s
...
Final draft ETSI EN 302 609 V1.1.1 (2008-08)
Harmonized European Standard (Telecommunications series)
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short Range Devices (SRD);
Radio equipment for Euroloop railway systems;
Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive
---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
Reference
DEN/ERM-TG28-0419
Keywords
radio, SRD, testing
ETSI
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Siret N° 348 623 562 00017 - NAF 742 C
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Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
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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
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If you find errors in the present document, please send your comment to one of the following services:
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Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2008.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .5
1 Scope.6
2 References.7
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 OBE unwanted emissions.9
4.1.1 Definition.9
4.1.2 Test procedure.9
4.1.3 Limit.9
4.2 Euroloop field strength.9
4.2.1 Definition.9
4.2.2 Test procedure.9
4.2.3 Limit.9
4.3 Euroloop transmitter mask.9
4.3.1 Definition.9
4.3.2 Test procedure.9
4.3.3 Limit.10
4.4 Maximum allowable measurement uncertainty.10
5 Test conditions .10
5.1 Test conditions.10
5.2 Test power source.10
5.3 Normal test conditions.11
5.3.1 Normal temperature and humidity.11
5.3.2 Normal test power source .11
5.3.2.1 Mains voltage.11
5.3.2.2 Other power sources.11
5.4 Requirements for the Euroloop test modulation.11
5.5 Choice of equipment for test suites .11
5.5.1 Choice of model.11
5.6 Measuring receiver.12
6 Measurement uncertainty .12
7 Test procedures for essential radio test suites .12
7.1 OBE unwanted emissions.12
7.2 Euroloop transmitter conducted measurements.13
7.3 Euroloop field strength measurements .13
Annex A (normative): HS Requirements and conformance Test specifications Table (HS-
RTT).15
Annex B (informative): The EN title in the official languages .17
Annex C (normative): Radiated measurement.18
Annex D (normative): Field strength measurements along the Euroloop .19
ETSI
---------------------- Page: 3 ----------------------
4 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
Annex E (informative): E-fields in the near field at low frequencies.20
Annex F (normative): H-field measurements and limits at 3 m and 30 m .22
F.1 Limits for measurements at 30 m distance.22
F.2 Limits for measurements at 3 m distance.23
Annex G (informative): Bibliography.24
History .25
ETSI
---------------------- Page: 4 ----------------------
5 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
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 a mandate from the European Commission issued
under Council Directive 98/34/EC [i.5] (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.6] 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.6] are given in annex A.
The Euroloop transmission system operates in accordance with ERC Recommendation 70-03, annex 4.
These specifications are complementary with the system and interoperability requirements for these devices established
under Commission Decision 2004/447/EC [i.7].
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.2].
The Euroloop communication system is defined by the specifications of the UNISIG consortia [i.3].
ETSI
---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
1 Scope
The present document covers the technical requirements for radio transmitters and receivers used in the Euroloop
transmission system. The system is only used in railway systems.
It applies to the following two equipment units as is shown in figure 6:
• The On-Board Equipment (OBE) receiving the Euroloop signal and the OBE comprises a receiver fitted with a
dedicated antenna.
• The Track-Side Equipment (Euroloop) transmitting the Euroloop signal that is always installed in an inner or
outer foot of a rail.
Interlocking
Train Control
System
Line side Electronic Unit
wake-up
Transmitter
Antenna
Receiver
Euroloop cable
Figure 1: Euroloop situation on railway track
The Euroloop comprises DSSS-BPSK-modulated transmitter fitted with a dedicated antenna. It is always switched on
but is only transmitting in the presence of a train.
These radio equipment types are capable of operating at the following frequencies as given below in table 1.
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
OBE receive centre frequency 13,547 MHz
Euroloop receiver centre frequency 27,095 MHz
Euroloop transmit centre frequency 13,547 MHz
Euroloop transmit modulation BPSK, DSSS chip rate 4,516 MHz
The present document is intended to cover the provisions of Directive 1999/5/EC [i.6] (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.
ETSI
---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
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.
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 100 028 (2001) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[2] ERTMS/ETCS - CLASS 1, SUBSET-044 FFFIS for Euroloop.
2.2 Informative references
The following referenced documents are not essential to the use of the ETSI deliverable 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] ETSI TR 102 273 (2001) (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".
[i.2] 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.3] 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.4] ETSI EN 302 608 (V1.1.1): "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".
[i.5] 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.
ETSI
---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
[i.6] 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.7] 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.
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
euroloop: wayside transmission unit that uses the magnetic transmission technology
NOTE: Its main function is to transmit signals through the air gap. The Euroloop is a single device mounted on
the track, which communicates with a train passing over it.
magnetic transmission technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver
NOTE: In the Euroloop transmission system context, it considers systems using the 13,547 MHz for Uplink
(track to train) transmission.
rf carrier: fixed radio frequency prior to modulation
uplink: transmission link from the Euroloop to the OBE
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
f Highest frequency of the power envelope
H
f Lowest frequency of the power envelope
L
Ω ohm
R Distance
λ wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
BPSK Binary Phase Shift Keying
dB deciBel
DSSS Direct Sequence Spread Spectrum
OBE On-Board Equipment
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
RMS Root Mean Square
SRD Short Range Device
VSWR Voltage Standing Wave Ratio
ETSI
---------------------- Page: 8 ----------------------
9 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
4 Technical requirements specification
4.1 OBE unwanted emissions
4.1.1 Definition
This test only applies to the OBE.
NOTE: Eurobalise-OBU tele-powering is used for wake-up of the Euroloop. The Eurobalise OBE transmitter
mask is defined in EN 302 608 [i.4].
4.1.2 Test procedure
This test is performed using a radiated measurement for frequencies below 30 MHz and a conducted measurement for
frequencies from 30 MHz to 1 000 MHz (see clause 7.1).
4.1.3 Limit
The spurious components between 9 kHz and 10 MHz shall not exceed a generated H-field at a distance of 10 m of
5,5 dBµA/m at 9 kHz descending 3 dB/oct. and -22 dBµA/m between 10 MHz and 30 MHz measured in 10 kHz
bandwidth.
The spurious components above 30 MHz shall not exceed the conducted power of 2 nW into 50 Ω resistive load.
4.2 Euroloop field strength
4.2.1 Definition
This test only applies to the Euroloop transmitter.
4.2.2 Test procedure
This test is performed using a radiated measurement (see clause 7.3).
4.2.3 Limit
The transmitted magnetic field strength shall not exceed -7 dBµA/m at 10 m distance within the frequency range of
11,1 MHz to 16,0 MHz measured in a bandwidth of 10 kHz spatially averaged over any 200 m length of the loop.
4.3 Euroloop transmitter mask
4.3.1 Definition
This test only applies to Euroloop transmitters.
4.3.2 Test procedure
This test is performed using conducted measurement (see clause 7.2).
ETSI
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10 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
4.3.3 Limit
The measured spectrum (field strength) shall not exceed the relative frequency mask values of figure 2.
10
11,1MHz 16,0MHz
0dBc 0dBc
0
10
7,3MHz
20
-23dBc 23MHz
-23dBc
30MHz
30
-35dBc 1000MHz
1,0MHz -40dBc
-37dBc
40
3
.
1 10 100 1 10
Frequency, MHz
Figure 2: Euroloop transmitter spectrum and spurious mask
The limit at 1 MHz shall also apply for frequencies below 1 MHz.
4.4 Maximum allowable measurement uncertainty
See clause 6, table 3.
5 Test conditions
5.1 Test conditions
Testing shall be made under normal test conditions.
NOTE: The Euroloop system components (OBE as well as the Euroloop) 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 to 5.6.
5.2 Test power source
The OBE and Euroloop equipment shall be tested using the appropriate test power source.
The test power source used shall be stated in the test report.
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 clauses 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.
ETSI
Relative Magnitude, dBc
---------------------- Page: 10 ----------------------
11 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
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 %.
The test conditions are only for the test equipment and not for the installed Euroloop system.
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 Euroloop test modulation
The applied DSSS code during tests shall be the Euroloop test-code #15 specified in SUBSET-044 [2].
The manufacturer shall provide the means to operate the transmitter during the tests.
5.5 Choice of equipment for test suites
5.5.1 Choice of model
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 tests shall be performed as radiated - and conducted test using the appropriate measurement procedures.
The manufacturer 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.
ETSI
---------------------- Page: 11 ----------------------
12 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
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 2 unless otherwise specified.
Table 2: Measuring receiver
Frequency: (f) Detector type Spectrum analyzer bandwidth
9 kHz ≤ f < 150 kHz RMS 300 Hz
RMS 10 kHz
150 kHz ≤ f < 30 MHz
RMS 100 kHz
30 MHz ≤ f ≤ 1 000 MHz
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 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 3.
Table 3: Absolute measurement uncertainties: maximum values
Parameter Uncertainty
Radiated field strength ±6 dB
Conducted RF power ±1,25 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 [1] 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 4 is based on such expansion factors.
The particular expansion factor used for the evaluation of the measurement uncertainty shall be stated.
TR 102 273 [i.1] provides further information concerning the usage of test sites.
7 Test procedures for essential radio test suites
7.1 OBE unwanted emissions
For the test conditions, see clause 5.1.
The emissions shall be measured over the frequency range 1 MHz to 1 000 MHz.
At each frequency at which a relevant spurious signal is detected the OBE under test and the test antenna shall be
rotated around the vertical axle until maximum field strength is indicated on the measuring receiver. This level shall be
noted.
ETSI
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13 Final draft ETSI EN 302 609 V1.1.1 (2008-08)
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 spectrum analyser shall be configured as follows unless otherwise stated:
• Resolution bandwidth: In accordance with table 2 in clause 5.6.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi Peak.
The OBE unwanted emissions are measured:
Step 1 For frequencies below 30 MHz the H-field strength shall be measured at 10 m distance by using Quasi
Peak detector and the resolution bandwidth as given in table 2 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 f
...
Draft ETSI EN 302 609 V1.1.1 (2007-12)
Harmonized European Standard (Telecommunications series)
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short Range Devices (SRD);
Radio equipment for Euroloop railway systems;
Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 302 609 V1.1.1 (2007-12)
Reference
DEN/ERM-TG28-0419
Keywords
radio, testing, SRD
ETSI
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Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2007.
All rights reserved.
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DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
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3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI
---------------------- Page: 2 ----------------------
3 Draft ETSI EN 302 609 V1.1.1 (2007-12)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .5
1 Scope.6
2 References.6
2.1 Normative references.7
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.8
4.1 OBE unwanted emissions.8
4.1.1 Definition.8
4.1.2 Test procedure.8
4.1.3 Limit.8
4.2 Euroloop field strength.8
4.2.1 Definition.8
4.2.2 Test procedure.9
4.2.3 Limit.9
4.3 Euroloop transmitter mask.9
4.3.1 Definition.9
4.3.2 Test procedure.9
4.3.3 Limit.9
4.4 Maximum allowable measurement uncertainty.9
5 Test conditions .10
5.1 Test conditions.10
5.2 Test power source.10
5.3 Normal test conditions.10
5.3.1 Normal temperature and humidity.10
5.3.2 Normal test power source .10
5.3.2.1 Mains voltage.10
5.3.2.2 Other power sources.10
5.4 Requirements for the Euroloop test modulation.11
5.5 Choice of equipment for test suites .11
5.5.1 Choice of model.11
5.6 Measuring receiver.11
6 Measurement uncertainty .11
7 Test procedures for essential radio test suites .12
7.1 OBE unwanted emissions.12
7.2 Euroloop transmitter conducted measurements.13
7.3 Euroloop field strength measurements .13
Annex A (normative): HS Requirements and conformance Test specifications Table (HS-
RTT).14
Annex B (informative): The EN title in the official languages .16
Annex C (normative): Radiated measurement.17
Annex D (normative): Field strength measurements along the Euroloop .18
ETSI
---------------------- Page: 3 ----------------------
4 Draft ETSI EN 302 609 V1.1.1 (2007-12)
Annex E (informative): E-fields in the near field at low frequencies.19
Annex F (normative): H-field measurements and limits at 3 m and 30 m .21
F.1 Limits for measurements at 30 m distance.21
F.2 Limits for measurements at 3 m distance.22
Annex G (informative): Bibliography.23
History .24
ETSI
---------------------- Page: 4 ----------------------
5 Draft ETSI EN 302 609 V1.1.1 (2007-12)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Public Enquiry phase
of the ETSI standards Two-step Approval Procedure.
The present document has been produced by ETSI in response to a mandate from the European Commission issued
under Council Directive 98/34/EC (as amended) laying down a procedure for the provision of information in the field of
technical standards and regulations.
The present document is intended to become a Harmonized Standard, the reference of which will be published in the
Official Journal of the European Communities referencing the Directive 1999/5/EC of the European Parliament and of
the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual
recognition of their conformity ("the R&TTE Directive ").
Technical specifications relevant to Directive 1999/5/EC are given in annex A.
The Euroloop transmission system operates in accordance with ERC Recommendation 70-03, annex 4.
These specifications are complementary with the system and interoperability requirements for these devices established
under Commission Decision 2004/447/EC.
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 [4].
The Euroloop communication system is defined by the specifications of the UNISIG consortia [5].
ETSI
---------------------- Page: 5 ----------------------
6 Draft ETSI EN 302 609 V1.1.1 (2007-12)
1 Scope
The present document covers the technical requirements for radio transmitters and receivers used in the Euroloop
transmission system. The system is only used in railway systems.
It applies to the following two equipment units:
• The OnBoard Equipment (OBE) receiving the Euroloop signal and the OBE comprises a receiver fitted with a
dedicated antenna.
• The TrackSide Equipment (Euroloop) transmitting the Euroloop signal that is always installed in an inner or
outer foot of a rail.
Interlocking
Train Control
System
Line side Electronic Unit
wake-up
Transmitter
Antenna
Receiver
Euroloop cable
Figure 1: Euroloop situation on railway track
The Euroloop comprises DSSS-BPSK-modulated transmitter fitted with a dedicated antenna. It is always switched on
but is only transmitting in the presence of a train.
These radio equipment types are capable of operating at the following frequencies as given below in table 1.
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
OBE receive centre frequency 13,547 MHz
Euroloop receiver centre frequency 27,095 MHz
Euroloop transmit centre frequency 13,547 MHz
Euroloop transmit modulation BPSK, DSSS chip rate 4,516 MHz
The present document is intended to cover the provisions of Directive 1999/5/EC (R&TTE Directive) article 3.2, which
states that "… radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial/space
radio communications and orbital resources so as to avoid harmful interference".
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the purposes
of the referring document;
- for informative references.
ETSI
---------------------- Page: 6 ----------------------
7 Draft ETSI EN 302 609 V1.1.1 (2007-12)
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.
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 100 028 (2001-12) (all parts): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[2] ERTMS/ETCS - CLASS 1, SUBSET-044 FFFIS for Euroloop.
2.2 Informative references
[3] ETSI TR 102 273 (2001-12) (all parts): "Electromagnetic compatibility and Radio spectrum
Matters (ERM): Improvement of radiated methods of measurement (using test sites) and
evaluation of the corresponding measurement uncertainties".
[4] 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".
[5] 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.
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
euroloop: wayside transmission unit that uses the magnetic transmission technology
NOTE: Its main function is to transmit signals through the air gap. The Euroloop is a single device mounted on
the track, which communicates with a train passing over it.
magnetic transmission technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver
NOTE: In the Euroloop transmission system context, it considers systems using the 13,547 MHz for Uplink
(track to train) transmission.
rf carrier: a fixed radio frequency prior to modulation
uplink: transmission link from the Euroloop to the OBE
ETSI
---------------------- Page: 7 ----------------------
8 Draft ETSI EN 302 609 V1.1.1 (2007-12)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
f Highest frequency of the power envelope
H
f Lowest frequency of the power envelope
L
Ω ohm
R Distance
λ wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
BPSK Binary Phase Shift Keying
dB Decibel
DSSS Direct Sequence Spread Spectrum
OBE On-Board Equipment
R&TTE Radio and Telecommunications Terminal Equipment
RBW Resolution BandWidth
RF Radio Frequency
RMS Root mean square
SRD Short Range Device
4 Technical requirements specification
4.1 OBE unwanted emissions
4.1.1 Definition
This test only applies to the OBE.
NOTE: Eurobalise-OBU tele-powering is used for wake-up the Euroloop.
4.1.2 Test procedure
This test is performed using a radiated measurement for frequencies below 30 MHz and a conducted measurement for
frequencies from 3 MHz to 1 000 MHz (see clause 7.1 OBE unwanted emissions ).
4.1.3 Limit
The spurious components between 9 kHz and 10 MHz shall not exceed a generated H-field at a distance of 10 m of
5,5 dBµA/m at 9 kHz descending 3 dB/oct. and -22 dBµA/m between 10 MHz and 30 MHz measured in 10 kHz
bandwidth.
The spurious components above 30 MHz shall not exceed the conducted power of 2 nW into 50 Ω resistive load.
4.2 Euroloop field strength
4.2.1 Definition
This test only applies to Euroloop transmitter.
ETSI
---------------------- Page: 8 ----------------------
9 Draft ETSI EN 302 609 V1.1.1 (2007-12)
4.2.2 Test procedure
This test is performed using a radiated measurement (see clause 7.3 Euroloop field strength measurements).
4.2.3 Limit
The transmitted magnetic field strength shall not exceed -7 dBµA/m at 10 m distance within the frequency range of
11,1 MHz to 16,0 MHz measured in a bandwidth of 10 kHz spatially averaged over any 200 m length of the loop.
4.3 Euroloop transmitter mask
4.3.1 Definition
This test only applies to Euroloop transmitters.
4.3.2 Test procedure
This test is performed using conducted measurement (see clause 7.2 Euroloop transmitter conducted measurements).
4.3.3 Limit
The measured spectrum (field strength) shall not exceed the relative frequency mask values of figure 2.
10
11.1MHz 16.0MHz
0dBc 0dBc
0
10
7.3MHz
20
-23dBc 23MHz
-23dBc
30MHz
30
-35dBc 1000MHz
1.0MHz -40dBc
-37dBc
40
3
.
1 10 100 1 10
Frequency, MHz
Figure 2: Euroloop transmitter spectrum and spurious mask
The limit at 1 MHz shall also apply for frequencies below 1 MHz.
4.4 Maximum allowable measurement uncertainty
See clause 6 Measurement uncertainty, table 3.
ETSI
Relative Magnitude, dBc
---------------------- Page: 9 ----------------------
10 Draft ETSI EN 302 609 V1.1.1 (2007-12)
5 Test conditions
5.1 Test conditions
Testing shall be made under normal test conditions.
NOTE: The Euroloop system components (OBE as well as the Euroloop) 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 Test power source to 5.6 Measuring receiver.
5.2 Test power source
The OBE and Euroloop equipment shall be tested using the appropriate test power source.
The test power source used shall be stated in the test report.
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 clauses 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.
ETSI
---------------------- Page: 10 ----------------------
11 Draft ETSI EN 302 609 V1.1.1 (2007-12)
5.4 Requirements for the Euroloop test modulation
The applied DSSS code during tests shall be the Euroloop test-code #15 specified in SUBSET-044 [2].
The manufacturer shall provide the means to operate the transmitter during the tests.
5.5 Choice of equipment for test suites
5.5.1 Choice of model
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 tests shall be performed as radiated - and conducted test using the appropriate measurement procedures.
The manufacturer 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 2 unless otherwise specified.
Table 2: Measuring receiver
Frequency: (f) Detector type Spectrum analyzer bandwidth
RMS 300 Hz
9 kHz ≤ f < 150 kHz
150 kHz ≤ f < 30 MHz RMS 10 kHz
RMS 100 kHz
30 MHz ≤ f ≤ 1 000 MHz
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 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 3.
Table 3: Absolute measurement uncertainties: maximum values
Parameter Uncertainty
Radiated field strength ±6 dB
Conducted RF power ± 1,25 dB
Temperature
±1 °C
Humidity
±10 %
ETSI
---------------------- Page: 11 ----------------------
12 Draft ETSI EN 302 609 V1.1.1 (2007-12)
For the test methods, according to the present document, the measurement uncertainty figures shall be calculated in
accordance with TR 100 028 [1] 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 4 is based on such expansion factors.
The particular expansion factor used for the evaluation of the measurement uncertainty shall be stated.
TR 102 273 [3] provides further information concerning the usage of test sites.
7 Test procedures for essential radio test suites
7.1 OBE unwanted emissions
See clause 5.1 Test conditions for the test conditions.
The emissions shall be measured over the frequency range 1 MHz to 1 000 MHz.
At each frequency at which a relevant spurious signal is detected the OBE under test and the test antenna shall be
rotated around the vertical axle 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 spectrum analyser shall be configured as follows unless otherwise stated:
• Resolution bandwidth: In accordance with table 2 in clause 5.6 Measuring receiver.
• Video bandwidth: Not less than the resolution bandwidth.
• Detector mode: Quasi Peak.
The OBE unwanted emissions are measured:
Step 1 For frequencies below 30 MHz the H-field strength shall be measured at 10 m distance by using Quasi Peak
detector and the resolution bandwidth as given in table 2 of clause 5.6 Measuring receiver. 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 e 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.
Step 2 For frequencies above 30 MHz the dedicated antenna shall be replaced by a non-reactive non radiating
resistive 50 Ω termination. The Voltage Standing Wave Ratio (VSWR) at the 50 Ω connector shall not be
greater than 1,5: 1 over the frequency range of the measurement.
The conducted power into the termination shall be measured.
ETSI
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13 Draft ETSI EN 302 609 V1.1.1 (2007-12)
7.2 Euroloop transmitter conducted measurements
See clause 5.1 Test conditions for the test conditions.
The measurements shall cover the frequency range 9 kHz to 1 000 MHz.
The measurements of the conducted transmitter spectrum shall be carried out in a test lab.
Step 1 The Euroloop transmitter spectrum shall be measured and recorded. The Euroloop transmitter shall be
activated according to the specification of the manufacturer. During spectrum measurements
...
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