SIST EN 300 674 V1.1.1:2003
(Main)ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Road Transport and Traffic Telematics (RTTT); Technical characteristics and test methods for Dedicated Short Range Communication (DSRC) transmission equipment (500 kbit/s / 250 kbit/s) operating in the 5,8 GHz Industrial, Scientific and Medical (ISM) band
- Abstract
To standardise the Radio part i.e. layer 1 including the physical aspects of Medium Access Control (MAC) of the equipment transmitting and receiving the communication protocols for DRSC, as defined by CEN 278 for RTTT. This ETS, together with ETS 300 683, is intended to become a harmonised standard, the reference of which is intended to be cited in the Official Journal of the European Communities referencing the EMC Directive. Close cooperation with CEN 278 required.
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
- Mandate
- M/270
SIST EN 300 674 V1.1.1:2003 is the Slovenian adoption of ETSI EN 300 674 V1.1.1. It specifies radio characteristics and test methods for Dedicated Short Range Communication (DSRC) transmission equipment used in Road Transport and Traffic Telematics (RTTT) in the 5,8 GHz Industrial, Scientific and Medical (ISM) band. The document is aimed at type approval, manufacturers, test laboratories and anyone selecting or verifying Road Side Units (RSUs), On Board Units (OBUs) and transponders.
What does SIST EN 300 674 V1.1.1:2003 specify?
SIST EN 300 674 V1.1.1:2003 specifies the radio part, meaning layer 1 and the physical aspects of Medium Access Control (MAC), for DSRC equipment that sends and receives the communication protocols defined for RTTT. It focuses on efficient use of the radio spectrum and on the measurements needed to verify the limits stated in the standard.
The standard applies to 5,8 GHz Short Range Devices (SRDs) used for data transmission in the 5 725 MHz to 5 875 MHz ISM band. It covers equipment with an RF output connection or an integral antenna, and it applies to both RSUs and OBUs with transceivers and transponders.
The document is organized into clauses 1 to 10, followed by four normative annexes.
| Annex | What it covers |
|---|---|
| Annex A | Radiated measurement sites and arrangements |
| Annex B | General measurement methods for conducted and radiated tests |
| Annex C | Receiver measurement methods using messages |
| Annex D | Subclauses relevant to compliance with EC Directives |
What are the key requirements of SIST EN 300 674 V1.1.1:2003?
SIST EN 300 674 V1.1.1:2003 combines general type-test conditions with transmitter, receiver and OBU limits. In practice, it tells a laboratory what to test, how to set up the test, and which declared characteristics from the manufacturer must be checked.
General test setup and equipment presentation
Clause 4 requires the applicant to provide suitable production models, the needed documentation, operating manuals, antennas, and the declared frequency ranges, power requirements and operating conditions. This matters because the lab must test the equipment variant that will actually be placed on the market.
Clause 4 also requires visible, legible and durable marking, including the applicant name or trade mark and the type designation. Controls that could increase interference must not be easily accessible, and any receiver data squelch must be overridable for some tests.
Test conditions and signals
Clause 5 sets normal tests and, where required, extreme tests. Normal conditions are a temperature of +15 C to +35 C and relative humidity of 20 % to 75 %. Extreme tests use the declared temperature category and declared supply conditions, so the equipment is checked in realistic environmental stress.
Clause 6 defines the test signals used in the measurements. The standard uses bit-stream signals D-M0, D-M1, D-M2 and D-M2', plus message-based signals D-M3, D-M4 and D-M4'. For a reader, this means the transmitter and receiver are tested with known patterns that simulate normal traffic and interference situations.
RSU transmitter requirements
Clause 7 covers RSU transmitter parameters. The transmitter maximum equivalent isotropically radiated power (eirp) is limited to 2 W. The frequency error is limited to ± 5 ppm, and the transmitter spectrum mask is checked against declared classes A, B or C.
Clause 7 also sets modulation depth limits of 0.5 to 0.9 and eye-pattern limits for pulse amplitude and pulse width. Spurious emissions are measured by conducted and radiated methods, so the equipment must not create unwanted emissions that disturb other services.
RSU receiver requirements
Clause 8 sets RSU receiver performance. Maximum usable sensitivity must be at least as good as the value declared by the manufacturer, and the tests can use bit streams or correctly coded messages. The receiver is also checked for error behaviour at high wanted input levels and for degradation under unwanted signals.
Clause 8 includes co-channel rejection, adjacent channel selectivity, spurious response rejection, blocking or desensitisation, intermodulation response rejection, and receiver spurious emissions. For procurement or approval work, these tests show how well the RSU keeps working near strong wanted and unwanted signals.
OBU requirements
Clause 9 sets OBU sensitivity and access protection requirements. The OBU sensitivity limit is better than -43 dBm in boresight and at ± 35 degrees under normal and extreme conditions. The OBU must not respond to incorrect D-M4' test signals or to the specified interference fields, but it must still respond correctly afterwards.
Clause 9.3 defines transponder conversion gain, and later subclauses cover OBU radiated behavior. This is important for vehicle equipment because the unit must answer only the intended roadside interrogation.
Clause 10 covers measurement uncertainty, so the test report must show the uncertainty for each measured parameter.
What terms does SIST EN 300 674 V1.1.1:2003 define?
- assigned frequency band - the frequency band in which the device is authorized to operate.
- Road Side Unit (RSU) - equipment intended for use in a fixed location.
- On Board Unit (OBU) - a device normally fixed in a vehicle that responds to an interrogating signal.
- transceiver OBU - an OBU with local Rx and Tx 5,8 GHz frequency generation.
- transponder - an OBU without its own 5,8 GHz frequency generation.
- successful message ratio - the proportion of transmitted messages received correctly under test conditions.
- equivalent isotropically radiated power (eirp) - the peak transmitter power expressed as radiated power relative to an isotropic antenna.
Who uses SIST EN 300 674 V1.1.1:2003?
Manufacturers of RTTT and DSRC equipment use this standard to design RSUs, OBUs and transponders that can be type tested. Accredited test laboratories use it to set up frequency, power, sensitivity and spurious-emission measurements.
Certification and regulatory bodies use it for type approval and for checking declared operating ranges, antennas and test reports. Buyers, quality managers and system integrators use it when they need equipment for road-side communication, vehicle installations or other RTTT applications in the 5,8 GHz band.
Which standards are used with SIST EN 300 674 V1.1.1:2003?
The standard cites these references and uses them in testing or environmental classification:
- ENV 12253 - DSRC physical layer at 5,8 GHz.
- ERC/DEC/(92)02 - designated frequency bands for coordinated introduction of RTT systems.
- CEPT/ERC Recommendation 70-03 - SRD use framework and limits.
- CISPR 16-1 - measuring apparatus and methods for radio disturbance.
- ETR 028 - measurement uncertainty for mobile radio equipment.
- ITU-T Recommendation O.153 - basic parameters for error performance measurements.
- IEC 721-3-4 and IEC 721-3-5 - environmental severity categories for stationary and ground-vehicle use.
- The foreword also pairs this standard with ETS 300 683 for the EMC Directive harmonized standard framework.
What does the SIST EN 300 674 V1.1.1:2003 document contain?
The document contains detailed test setups, calibration steps and limit tables for RSU transmitters, RSU receivers and OBUs. It includes figures for conducted and radiated arrangements, receiver sensitivity setups, co-channel rejection, adjacent channel selectivity and spurious-emission measurements.
It also provides table-based limits for transmitter frequencies, temperature categories, spectrum-mask classes, eye-pattern values, receiver rejection limits and OBU interference tests. Annex A gives radiated test sites, Annex B gives measurement method guidance, Annex C gives message-based receiver methods, and Annex D identifies clauses relevant to EC Directive compliance.
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Frequently Asked Questions
SIST EN 300 674 V1.1.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Road Transport and Traffic Telematics (RTTT); Technical characteristics and test methods for Dedicated Short Range Communication (DSRC) transmission equipment (500 kbit/s / 250 kbit/s) operating in the 5,8 GHz Industrial, Scientific and Medical (ISM) band". This standard covers: To standardise the Radio part i.e. layer 1 including the physical aspects of Medium Access Control (MAC) of the equipment transmitting and receiving the communication protocols for DRSC, as defined by CEN 278 for RTTT. This ETS, together with ETS 300 683, is intended to become a harmonised standard, the reference of which is intended to be cited in the Official Journal of the European Communities referencing the EMC Directive. Close cooperation with CEN 278 required.
To standardise the Radio part i.e. layer 1 including the physical aspects of Medium Access Control (MAC) of the equipment transmitting and receiving the communication protocols for DRSC, as defined by CEN 278 for RTTT. This ETS, together with ETS 300 683, is intended to become a harmonised standard, the reference of which is intended to be cited in the Official Journal of the European Communities referencing the EMC Directive. Close cooperation with CEN 278 required.
SIST EN 300 674 V1.1.1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.060.99 - Other equipment for radiocommunications; 33.100.01 - Electromagnetic compatibility in general; 35.240.60 - IT applications in transport. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 674 V1.1.1:2003 is associated with the following European legislation: EU Directives/Regulations: 2005-01-1864; Standardization Mandates: M/270. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 300 674 V1.1.1:2003 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.ELWVElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Road Transport and Traffic Telematics (RTTT); Technical characteristics and test methods for Dedicated Short Range Communication (DSRC) transmission equipment (500 kbit/s / 250 kbit/s) operating in the 5,8 GHz Industrial, Scientific and Medical (ISM) band35.240.60Uporabniške rešitve IT v transportu in trgoviniIT applications in transport and trade33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 300 674 Version 1.1.1SIST EN 300 674 V1.1.1:2003en01-december-2003SIST EN 300 674 V1.1.1:2003SLOVENSKI
STANDARD
EN 300 674 V1.1.1 (1999-02)European Standard (Telecommunications series)Electromagnetic compatibilityand Radio spectrum Matters (ERM);Road Transport and Traffic Telematics (RTTT);Technical characteristics and test methods forDedicated Short Range Communication (DSRC)transmission equipment (500 kbit/s / 250 kbit/s) operating inthe 5,8 GHz Industrial, Scientific and Medical (ISM) bandSIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)2ReferenceDEN/ERM-RP08-0105 (68o00ico.PDF)Keywordsdata, radio, RTTT, testingETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frIndividual copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: editor@etsi.frCopyright NotificationNo 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 1999.All rights reserved.SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)3ContentsIntellectual Property Rights.7Foreword.7Introduction.81Scope.92References.93Definitions, symbols and abbreviations.103.1Definitions.103.2Symbols.103.3Abbreviations.114General.114.1Presentation of equipment for testing purposes.114.1.1Choice of model for testing.124.1.2Choice of operating frequencies.124.1.3Testing of equipment with or without a permanent external RF port.124.1.4Equipment with a permanent internal RF port.124.1.5Equipment with a temporary RF port.124.1.6Antennas.124.2Mechanical and electrical design.124.2.1General.124.2.2Controls.134.2.3Marking.134.2.3AEquipment identification.134.2.4Receiver data squelch.134.3Declarations by the applicant.134.4Auxiliary test equipment.134.5Interpretation of the measurement results.135Test conditions, power sources and ambient temperatures.135.1Normal and extreme test conditions.135.2External test power source.145.3Normal test conditions.145.3.1Normal temperature and humidity.145.3.2Normal test power source.145.3.2.1Mains voltage.145.3.2.2Regulated lead-acid battery power sources.145.3.2.3Other power sources.145.4Extreme test conditions.155.4.1Extreme temperatures.155.4.1.1Procedure for tests at extreme temperatures.155.4.1.1.1Procedure for equipment designed for continuous transmit operation.155.4.1.1.2Procedure for equipment designed for intermittent transmit operation.155.4.1.2Extreme temperature ranges.165.4.2Extreme test source voltages.165.4.2.1Mains voltage.165.4.2.2Lead-acid battery, regulated power sources.165.4.2.3Power sources using other types of batteries.165.4.2.4Other power sources.166General conditions.176.1Test signals and test modulation.176.1.1Normal test signals (wanted and unwanted signals).176.1.1.1Signals for bit stream measurements.176.1.1.2Signal for messages.176.2Modes of operation of the transmitter.18SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)46.3Encoder for receiver measurements.186.4Facilities for access.186.4.1Analogue access.186.4.2Access points for data stream measurement.196.4.3Coupling arrangements.196.4.3.1Arrangements for measurements with continuous bit streams.196.4.3.2Arrangement for measurements with messages.196.4.4Message received indicator.206.5Test sites and general arrangements for radiated measurements.206.6Artificial antenna.206.7Test fixture.206.7.1Calibration.206.7.2Mode of use.217Methods of measurement and limits for Road Side Unit (RSU) transmitter parameters.217.1Equivalent isotropically radiated power (eirp).217.1.1Definition.217.1.2Method of measurement.227.1.3Limit.227.2Frequency error.227.2.1Definition.227.2.2Method of measurement.227.2.3Limit.237.3Transmitter spectrum mask.237.3.1Definition.237.3.2Method of measurement.237.3.3Limit.247.4Modulation depth.247.4.1Definition.247.4.2Method of measurement.247.4.3Limit.247.5Eye pattern.247.5.1Definition.247.5.2Method of measurement.257.5.3Limit.257.6Spurious emissions.267.6.1Definition.267.6.2Measuring receiver.267.6.3Method of measurement conducted spurious emission.267.6.4Method of measurement cabinet spurious radiation.277.6.5Method of measurement radiated spurious emission.287.6.6Limits.288Methods of measurement and limits for RSU receiver parameters.288.1Maximum useable sensitivity.298.1.1Definition.298.1.2Method of measurements under normal and extreme test conditions.298.1.2.1Test arrangement for equipment with integral antenna.308.1.2.2Test arrangement for equipment with antenna connector.318.1.2.3Test procedure for continuous bit streams.328.1.2.4Test procedure for messages.328.1.3Limits.328.2Error behaviour at high wanted input signals.328.2.1Definition.328.2.2Method of measurement.338.2.3Limit.338.3Degradation measurements.338.3.1Definition.338.3.2General conditions.348.3.3Co-channel rejection.348.3.3.1Definition.34SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)58.3.3.2Method of measurement.348.3.3.3Limit.358.3.4Adjacent channel selectivity.358.3.4.1Definition.358.3.4.2Method of measurement.358.3.4.3Limit.368.3.5Spurious response rejection and blocking / desensitisation.368.3.5.1Definition.368.3.5.2Method of measurement.378.3.5.3Limits.378.3.6Intermodulation response rejection.378.3.6.1Definition.378.3.6.2Method of measurement.388.3.6.3Limits.388.4Spurious emissions.398.4.1Definition.398.4.2Method of measurement - conducted spurious emissions.398.4.3Method of measurement - cabinet radiation.408.4.4Method of measurement - radiated spurious components.408.4.5Limit.409Method of measurements and limits for On Board Units (OBUs).419.1OBU sensitivity.419.1.1Definition.419.1.2Method of measurement.419.1.3Limit.429.2On board unit access.429.2.1Definition.429.2.2Method of measurement.439.2.3Limit.449.3Transponder conversion gain.449.3.1Definition.449.3.2Method of measurement.459.3.3Limits.469.4OBU maximum radiated subcarrier.469.4.1Definition.469.4.2Method of measurement.469.4.3Limits.469.5OBU frequency error.479.5.1Definition.479.5.2Method of measurement.479.5.3Limit.489.6OBU spurious radiation.489.6.1Definition.489.6.2Method of measurement.499.6.3Limits.4910Measurement uncertainty.50Annex A (normative):Radiated measurements.51A.1Test sites and general arrangements for measurements involving the use of radiated fields.51A.1.1Outdoor test site.51A.1.2Standard position.51A.1.3Test antenna.52A.1.4Optional additional indoor site.52A.2Guidance on the use of radiation test sites.52A.2.1Measuring distance.52A.2.2Test antenna.53A.2.3Substitution antenna.53A.2.4Auxiliary cables.53SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)6A.3Further optional alternative indoor test site using a fully anechoic RF chamber.54A.3.1Example of the construction of a shielded anechoic chamber.54A.3.2Influence of parasitic reflections in anechoic chambers.54A.3.3Calibration of the shielded RF anechoic chamber.55Annex B (normative):General description of measurement methods.57B.1Conducted measurements.57B.2Radiated measurements.57Annex C (normative):Receiver methods of measurements using messages.59C.1General.59C.2Test signals.59C.3Method of measurement for receiver sensitivity.59C.4Method of measurements for receiver degradation.60Annex D (normative):Subclauses of the present document relevant for compliance with theessential requirements EC Council Directives.61History.62SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)7Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by ETSI Technical CommitteeElectromagnetic compatibility and Radio spectrum Matters (ERM).The present document has been produced by ETSI in response to a mandate from the European Commission issuedunder Council Directive 98/34/EC (as amended) laying down a procedure for the provision of information in the field oftechnical standards and regulations.The present document together with ETS 300 683, is intended to become a Harmonized Standard, the reference ofwhich will be published in the Official Journal of the European Communities referencing the Council Directive on theapproximation of the laws of the Member States relating to electromagnetic compatibility ("the EMC Directive")(89/336/EEC as amended).Technical specifications relevant to the EMC Directive are given in annex G.As a result of a meeting between CEN, CEPT, ETSI, and the European Commission on 29 June 1998, the existing workitem was split as follows:-EN 300 674, supporting the CEN TC 278 RTTT system;-ES 200 674-1, supporting RTTT systems with lower data rates;-ES 200 674-2, supporting RTTT systems with higher data rates.National transposition datesDate of adoption of this EN:22 January 1999Date of latest announcement of this EN (doa):30 April 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):31 October 1999Date of withdrawal of any conflicting National Standard (dow):30 April 2002SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)8IntroductionThe present document was drafted on the assumption that type test measurements, performed in an accredited testlaboratory, will be accepted by the various national regulatory authorities in order to grant type approval, provided thenational regulatory requirements are met. This is in compliance with CEPT/ERC Recommendation 70-03 [3].The present document specifies the requirements for a dedicated 5,8 GHz short range microwave link intended for aEuropean wide data communication system for Road Transport and Traffic Telematics (RTTT) applications.RTTT systems for Europe-wide use are specified by CEN. The necessary set of radio parameters for the support ofENV 12253 [1] is included in the present document.The parameters might be subject to changes if necessary and when other RTTT systems specified by CEN require this.The RSU transmitter operates on a non-exclusive basis on frequencies depending on the declared application accordingto ERC/DEC(92)02 [2].A channel spacing of 5 MHz is used for channels 1, 2, 3 and 4, see table 1.Table 1: RTTT transmitter frequencies for 5 MHz channel spacing systemsInitial road toVehicle systemsMulti lane road junctions(options)Channel 15,800 GHz - 2,5 MHzChannel 25,800 GHz + 2,5 MHzChannel 35,810 GHz - 2,5 MHzChannel 45,810 GHz + 2,5 MHzIn order to permit the greatest freedom of design of equipment, whilst protecting other radio services from interference,a balance is required between the permitted range of frequencies on which the equipment may be used, and its frequencystability and modulation characteristics. The present document specifies the operational frequencies and systembandwidths. However, the present document does not fully describe the permitted range of optional frequencies as theseare covered by national regulations. The optional range of frequencies offered should be specified on each type approvalcertificate issued.Clauses 1 and 3 give a general description of the types of equipment covered by the present document and thedefinitions and abbreviations used. Clause 4 gives general requirement in order that type tests may be carried out andany markings on the equipment to be provided by the manufacturer.Clauses 5 and 6 specify the test conditions.Clauses 7 and 8 specify the limits of the parameters which are required to be tested for the RSU transmitters andreceivers 1. These limits have been chosen to minimize harmful interference to and from other equipment and services.These clauses also specify how the equipment is to be tested and the conditions which are applied.Clause 9 specifies the limits of the parameters which are required to be tested for transponders. These limits are chosento restrict the access to and radiation from transponders. Details on the test methods for the transponders are alsospecified.Clause 10 specifies the maximum measurement uncertainty values.Annex A provides normative specifications concerning test sites for radiated measurements.Annex B provides normative descriptions of measurement methods for radiated measurements.Annex C provides normative descriptions of alternative measurement methods for receivers.Annex D contains technical specification relevant to the EMC Directives.SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)91ScopeThe present document specifies radio parameters which are necessary for the efficient use of the radio spectrum and forthe purpose of type approval. This includes methods of measurements for verifying the limits stated in the presentdocument.The present document applies to 5,8 GHz Short Range Devices (SRDs) for use in Road Transport Traffic andTelematics (RTTT):-with a Radio Frequency (RF) output connection and specified antenna or with an integral antenna;-for data transmission only;-operating on radio frequencies in the 5 725 MHz to 5 875 MHz Industrial, Scientific and Medical (ISM) band.The applicability of the present document covers both the Road Side Units (RSUs) and the On Board Units (OBUs) withtransceivers and transponders.The present document does not necessarily include all the characteristics which may be required by a user, nor does itnecessarily represent the optimum performance achievable.The present document complies with ERC/DEC/(92)02 [2] and CEPT/ERC Recommendation 70-03 [3]. It is a specificstandard covering various RTTT applications.For non-harmonized parameters, national regulatory conditions may apply regarding the type of modulation,channel / frequency separation, maximum transmitter output power / effective radiated power, equipment marking as acondition of the issue of an individual or general license, or, as a condition of use under license exemption.Additional standards or specifications may be required for equipment such as that intended for connection to the PublicSwitched Telephone Network (PSTN) or other systems.2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.· For a specific reference, subsequent revisions do not apply.· For a non-specific reference, the latest version applies.· A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.[1]ENV 12253 (1997): "Road Transport and Traffic Telematics (RTTT); Dedicated Short-rangeCommunication (DSRC); Physical Layer using Microwave at 5,8 GHz".[2]ERC/DEC/(92)02: "ERC Decision of 22 October 1992 on the frequency bands to be designated forthe co-ordinated introduction of Road Transport Telematic systems(RTT)".[3]CEPT/ERC Recommendation 70-03: "Relating to the use of Short Range Devices (SRD)".[4]CISPR 16-1: "Specification for radio disturbance and immunity measuring apparatus and methods;Part 1: Radio disturbance and immunity measuring apparatus".[5]ETR 028: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in themeasurement of mobile radio equipment characteristics".[6]ITU-T Recommendation O.153 (1992): "Basic parameters for the measurement of errorperformance at bit rates below the primary rate".SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)10[7]IEC 721-3-4 (1995): "Classification of environmental conditions; Part 3: Classification of groupsof environmental parameters and their severities; Section 4: Stationary use at non-weatherprotectedlocations".[8]IEC 721-3-5 (1997): "Classification of environmental conditions; Part 3: Classification of groupsof environmental parameters and their severities; Section 5: Ground vehicle installations".3Definitions, symbols and abbreviations3.1DefinitionsFor the purposes of the present document, the following definitions apply:assigned frequency band: the frequency band within which the device is authorized to operate.Road Side Unit (RSU): equipment intended for use in a fixed location (Fixed Station).integral antenna: an antenna, with or without a connector, designed as an indispensable part of the equipment.integrated antenna: an antenna, without connector, integrated as part of the equipment.successful message ratio: the proportion of transmitted messages that are received correctly under test conditions.On Board Unit (OBU): a device normally fixed in a vehicle which responds to an interrogating signal.portable station: equipment intended to be carried, attached or implanted.operating frequency: the nominal frequency at which equipment is operated; also referred to as the operating centrefrequency. Equipment may be able to operate at more than one operating frequency.operating frequency range: the range of operating frequencies over which the equipment can be adjusted throughswitching or reprogramming.radiated measurements: measurements which involve the absolute measurement of a radiated field.transceiver OBU: On Board Unit (OBU) with local Rx and Tx 5,8 GHz frequency generation.transponder: On Board Unit (OBU) without own 5,8 GHz frequency generation.3.2SymbolsFor the purposes of the present document, the following symbols apply:dBiGain relative to an isotropic antennaEField strengthEoReference field strength, (see subclause A.3.2.)fSTransmitter carrier frequencyfTXDeclared transponder subcarrier frequencylWavelengthppmparts per million (10-6)RDistance, (see subclause A.3.2.)RoReference distance, (see subclause A.3.2.)RxReceiverTxTransmitterSIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)113.3AbbreviationsFor the purposes of the present document, the following abbreviations apply:eirpequivalent isotropically radiated powerEUTEquipment Under TestIFIntermediate FrequencyISMIndustrial, Scientific and MedicalNOTE:The present document covers only the following designated ISM band: 5 725 MHz to 5 875 MHz.OEMOriginal Equipment ManufacturerOBUOn Board UnitPSKPhase Shift KeyingPSTNPublic Switched Telephone NetworkRFRadio FrequencyRSURoad Side UnitRTTTRoad Transport and Traffic TelematicsSRDShort Range DeviceVSWRVoltage Standing Wave Ratio4General4.1Presentation of equipment for testing purposesEach equipment submitted for type testing shall fulfil the requirements of the present document on all frequencies overwhich it is intended to operate.The applicant shall complete the appropriate application form when submitting equipment for type testing. Additionally,technical documentation and operating manuals shall be supplied.The performance of the equipment submitted for testing shall be representative of the performance of the correspondingproduction model. In order to avoid any ambiguity in that assessment, the present document contains instructions for thepresentation of equipment for type testing purposes (this subclause), conditions of testing (see clause 5) andmeasurement methods (see clauses 7, 8 and 9).Stand alone equipment shall be offered by the applicant complete with any ancillary equipment needed for testing. Theapplicant shall declare the frequency range(s), the range of operation conditions and power requirements, as applicable,in order to establish the appropriate test conditions.Test fixtures may be supplied by the applicant (see subclause 6.7).Original Equipment Manufacturers' (OEM) plug-in cards or units may be offered for testing together with a suitable testfixture. Alternatively, complete RTTT equipment may be supplied by the manufacturer to facilitate the tests.To simplify and harmonize the testing procedures between the different test laboratories, measurements shall beperformed, according to the present document, on samples of equipment defined in subclauses 4.1.1 and 4.1.2.These subclauses are intended to give confidence that the requirements set out in the present document have been metwithout the necessity of performing measurements on all optional frequencies.SIST EN 300 674 V1.1.1:2003
ETSIEN 300 674 V1.1.1 (1999-02)124.1.1Choice of model for testingThe applicant shall provide one or more production models of the equipment, as appropriate, for testing.Equipment designed for use with an integral antenna may be supplied with a temporary external / internal or permanentinternal 50 W connector for the purpose of testing, providing the characteristics being measured are not expected to beaffected. The measurements, wherever possible, should be made by use of a direct connection to the equipment undertest (antenna connector or temporary 50 W connector) as stated in the present document, in order to ensure that themeasurement uncertainties are minimized. If applicable, the means to access and/or implement the internal connectorshould be provided by the applicant with the aid of a diagram (see subclause 4.1.4). If a temporary 50 W RF connector isused, this shall be stated on the test report form.4.1.2Choice of operating frequenciesWhere equipment can be adjusted to operate at different operating frequencies other than channels 1 and 2 (see table 1),a minimum of two operating frequencies shall be chosen such that the lower and higher limits of the applicant's declaredoperating ranges of the equipment are covered.4.1.3Testing of equipment with or without a permanent external RF portTo facilitate relative measurements, use may be made of a test fixture as described in subclause 6.7, or the equipmentmay be supplied
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