SIST EN 300 720-1 V1.2.1:2003
(Main)ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Ultra-High Frequency (UHF) on-board communications systems and equipment; Part 1: Technical characteristics and methods of measurement
- Abstract
Editorial modifications resultng from the adoption of ETS 300 720-2. and includion of technical changes noted at ERM#10
- 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
SIST EN 300 720-1 V1.2.1:2003 is the Slovenian adoption of ETSI EN 300 720-1 Version 1.2.1. It specifies the minimum technical characteristics and the measurement methods for UHF on-board communications systems and equipment used in the maritime mobile service, so designers, manufacturers and test labs know what to build, test and document.
What does SIST EN 300 720-1 V1.2.1:2003 specify?
SIST EN 300 720-1 V1.2.1:2003 covers the technical characteristics and methods of measurement for UHF on-board maritime communications equipment operating on frequencies allocated by the ITU Radio Regulations, appendix 20. The document is organized into clauses 1 to 9 and Annex A.
| Annex | What it covers |
|---|---|
| Annex A | Adjacent channel power measurement, including the power measuring receiver specification |
The scope is practical: it tells you which channels the equipment may use, how it should behave on board ships, and how conformity testing is to be carried out.
What are the key requirements of SIST EN 300 720-1 V1.2.1:2003?
SIST EN 300 720-1 V1.2.1:2003 sets requirements for construction, channel use, controls, safety, transmitter performance, receiver performance, and environmental robustness. In practice, it defines both the product behavior and the test setup needed to prove that behavior.
Main technical points
- Construction and shipboard use - Clause 4.1 requires good engineering practice and suitability for use on board ships. The equipment colour shall be neither orange nor yellow. This matters because the unit must be fit for marine installation and not use colors that could confuse safety marking or emergency equipment.
- Frequencies and channel access - Clause 4.2 limits operation to the listed single-frequency simplex channels and two-frequency simplex channels in the 457 MHz and 467 MHz bands. Independent selection of transmit and receive frequencies is not allowed, and the equipment shall include at least one single-frequency simplex channel at 457,525 MHz. This keeps the set aligned with the maritime channel plan.
- Controls and switching - Clause 4.3 requires a channel selector, on/off control with visible indication, push-to-talk, and audio volume control. Clause 4.4 limits channel changeover to 5 seconds and transmit-receive changeover to 0,3 seconds. That means the user interface must be simple and the radio must switch quickly enough for operational use.
- Safety provisions - Clause 4.5 requires protection against excessive current or voltage, reverse polarity protection, resistance to open-circuit or short-circuit antenna conditions for at least 5 minutes, and a declared compass safe distance. This is important for ship installations where power and antenna faults can occur.
- Modulation and channel spacing - Clause 4.6 specifies phase modulation, G3E, with 25 kHz channel spacing. That defines the radio system type and the occupied channel plan.
- Test conditions and uncertainty - Clauses 5 and 6 define normal and extreme test conditions, the test power source, 50 Ω test connections, normal test modulation, artificial antenna, test channels, and measurement uncertainty handling. Test reports therefore need to show both the conditions used and the uncertainty of each measurement.
- Environmental performance - Clause 7 covers drop, dry heat and damp heat tests, followed by a performance check. The equipment must still meet the performance check after these stresses, which shows whether it survives handling and harsh ambient conditions.
- Transmitter and receiver limits - Clauses 8 and 9 cover frequency error, carrier power, deviation, modulation characteristics, adjacent channel power, residual modulation, transient behavior, spurious emissions, sensitivity, selectivity, blocking, and audio distortion. These are the core acceptance checks for radio performance.
What terms does SIST EN 300 720-1 V1.2.1:2003 define?
SIST EN 300 720-1 V1.2.1:2003 defines a small set of key terms and abbreviations used throughout the measurement clauses.
- modulation index - The ratio between frequency deviation and modulation frequency.
- emf - Electro-Motive Force, used for expressing test signal levels.
- RF - Radio Frequency, the radio spectrum used by the equipment.
- SINAD - signal+noise+distortion/noise+distortion, a receiver performance measure used in several sensitivity and interference tests.
- UHF - Ultra-High Frequency, the band family covered by the standard.
- dBA - Acoustic level in dB relative to 2 × 10^-5 Pa.
Who uses SIST EN 300 720-1 V1.2.1:2003?
SIST EN 300 720-1 V1.2.1:2003 is used by radio equipment manufacturers, test laboratories, quality teams, and buyers specifying shipboard communications equipment. It is also relevant to marine system integrators and certification teams that need to check channel use, RF performance, environmental endurance, labeling, and documentation against a common test method.
What changed in SIST EN 300 720-1 V1.2.1:2003 from the previous edition?
SIST EN 300 720-1 V1.2.1:2003 includes editorial modifications resulting from the adoption of ETS 300 720-2 and technical changes noted at ERM#10.
Which standards are used with SIST EN 300 720-1 V1.2.1:2003?
SIST EN 300 720-1 V1.2.1:2003 references these documents for channel allocation, measurement practice and related test methods:
- ITU Radio Regulations, appendix 20 - Defines the maritime on-board communication bands and channel characteristics used by the equipment.
- ETSI ETR 028 - Provides the measurement uncertainty approach used when interpreting test results.
- ITU-T Recommendation P.53 - Supplies the psophometric telephone filtering network used for SINAD measurements.
- ISO 694 - Provides the method for determining the compass safe distance.
- Part 2: Harmonized EN under article 3.2 of the R&TTE Directive - The companion part named in the foreword.
What does the SIST EN 300 720-1 V1.2.1:2003 document contain?
SIST EN 300 720-1 V1.2.1:2003 contains the detailed test framework behind the requirements: connection arrangements, test signals, extreme-temperature procedures, environmental test methods, and transmitter and receiver measurement methods. It also gives the numerical limits for channel performance, deviation, spurious emissions, sensitivity, selectivity, blocking, and audio distortion.
Annex A provides a worked measurement method for adjacent channel power and specifies the required behavior of the power measuring receiver, including its IF filter selectivity and attenuation characteristics. That annex is the practical reference for labs that need to measure adjacent channel power in a repeatable way.
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Frequently Asked Questions
SIST EN 300 720-1 V1.2.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Ultra-High Frequency (UHF) on-board communications systems and equipment; Part 1: Technical characteristics and methods of measurement". This standard covers: Editorial modifications resultng from the adoption of ETS 300 720-2. and includion of technical changes noted at ERM#10
Editorial modifications resultng from the adoption of ETS 300 720-2. and includion of technical changes noted at ERM#10
SIST EN 300 720-1 V1.2.1:2003 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; 47.020.70 - Navigation and control equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 720-1 V1.2.1:2003 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.ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Ultra-High Frequency (UHF) on-board communications systems and equipment; Part 1: Technical characteristics and methods of measurement47.020.70Navigacijska in krmilna opremaNavigation and control equipment33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 300 720-1 Version 1.2.1SIST EN 300 720-1 V1.2.1:2003en01-december-2003SIST EN 300 720-1 V1.2.1:2003SLOVENSKI
STANDARD
ETSIEN300720-1V1.2.1(2000-08)EuropeanStandard(Telecommunicationsseries)ElectromagneticcompatibilityandRadioSpectrumMatters(ERM);Ultra-HighFrequency(UHF)on-boardcommunicationssystemsandequipment;Part1:TechnicalcharacteristicsandmethodsofmeasurementSIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)2ReferenceREN/ERM-RP01-038-1Keywordsmaritime,radioETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Definitions,symbolsandabbreviations.73.1Definitions.73.2Symbols.73.3Abbreviations.74Generalrequirements.84.1Construction.84.2Frequencies.84.3Controls.84.4Switchingtime.94.5Safetyprecautions.94.6Classofemissionandmodulationcharacteristics.94.7Battery.94.8Loudspeakerandmicrophone.94.9Labelling.94.10Equipmentdocumentation.95Testconditions,powersourcesandambienttemperatures.105.1Normalendextremetestconditions.105.2Testpowersource.105.3Normaltestconditions.105.3.1Normaltemperatureandhumidity.105.3.2Normaltestvoltage.105.4Extremetestconditions.105.4.1Extremetemperatures.105.4.1.1Upperextremetemperature.105.4.1.2Lowerextremetemperature.105.4.2Extremetestpowersupplyvalues.115.4.2.1Upperextremetestvoltage.115.4.2.2Lowerextremetestvoltage.115.5Procedurefortestsatextremetemperatures.116Generalconditionsofmeasurement.126.1Testconnections.126.2Arrangementsfortestsignals.126.2.1Testsignalsappliedtothetransmitterinput.126.2.2Testsignalsappliedtotheantennaterminal.126.3Receivermuteorsquelchfacility.126.4Normaltestmodulation.126.5Artificialantenna.126.6Testchannels.126.7Measurementuncertaintyandinterpretationofthemeasuringresults.136.7.1Measurementuncertainty.136.7.2Interpretationofthemeasurementresults.137Environmentaltests.147.1Procedure.147.2Performancecheck.147.3Droptestontoahardsurface.147.3.1Definition.147.3.2Methodofmeasurement.147.3.3Requirement.15SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)47.4Temperaturetests.157.4.1General.157.4.2Dryheat.157.4.2.1Methodofmeasurement.157.4.2.2Requirement.157.4.3Dampheat.157.4.3.1Methodofmeasurement.157.4.3.2Requirement.168Transmitter.168.1Frequencyerror.168.1.1Definition.168.1.2Methodofmeasurement.168.1.3Limits.168.2Carrierpower.168.2.1Definition.168.2.2Methodofmeasurement.168.2.3Limit.168.3Frequencydeviation.168.3.1Definition.168.3.2Maximumfrequencydeviation.178.3.2.1Methodofmeasurement.178.3.2.2Limit.178.3.3Frequencydeviationatmodulationfrequenciesabove3kHz.178.3.3.1Methodofmeasurement.178.3.3.2Limits.178.4Limitationcharacteristicsofthemodulator.188.4.1Definition.188.4.2Methodofmeasurement.188.4.3Limit.188.5Sensitivityofthemodulator,includingmicrophone.188.5.1Definition.188.5.2Methodofmeasurement.188.5.3Limit.188.6Audiofrequencyresponse.188.6.1Definition.188.6.2Methodofmeasurement.188.6.3Limit.198.7Audiofrequencyharmonicdistortionoftheemission.198.7.1Definition.198.7.2Methodofmeasurement.208.7.3Limit.208.8Adjacentchannelpower.208.8.1Definition.208.8.2Methodofmeasurement.208.8.3Limit.208.9Residualmodulationofthetransmitter.208.9.1Definition.208.9.2Methodofmeasurement.208.9.3Limit.218.10Transientfrequencybehaviourofthetransmitter.218.10.1Definition.218.10.2Methodofmeasurement.218.10.3Limits.228.11Conductedspuriousemissionsconveyedtotheantenna.248.11.1Definition.248.11.2Methodofmeasurement.248.11.3Limit.248.12Cabinetradiationandconductedspuriousemissionsotherthanthoseconveyedtotheantenna.248.12.1Definitions.248.12.2Methodofmeasurement.24SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)58.12.3Limits.259Receiver.269.1Harmonicdistortionandratedaudiofrequencyoutputpower.269.1.1Definition.269.1.2Methodsofmeasurement.269.1.3Limits.269.2Audiofrequencyresponse.269.2.1Definition.269.2.2Methodofmeasurement.279.2.3Limits.279.3Maximumusablesensitivity.289.3.1Definition.289.3.2Methodofmeasurement.299.3.3Limits.299.4Co-channelrejection.299.4.1Definition.299.4.2Methodofmeasurement.299.4.3Limit.299.5Adjacentchannelselectivity.309.5.1Definition.309.5.2Methodofmeasurement.309.5.3Limits.309.6Spuriousresponserejection.309.6.1Definition.309.6.2Methodofmeasurement.309.6.3Limit.319.7Intermodulationresponse.319.7.1Definition.319.7.2Methodofmeasurement.319.7.3Limit.319.8Blockingordesensitization.319.8.1Definition.319.8.2Methodofmeasurement.319.8.3Limit.329.9Conductedspuriousemissionsconveyedtotheantenna.329.9.1Definition.329.9.2Methodofmeasurement.329.9.3Limit.329.10Radiatedspuriousemissions.329.10.1Definition.329.10.2Methodofmeasurements.339.10.3Limit.33AnnexA(normative):Adjacentchannelpowermeasurement.34A.1Methodofmeasurement.34A.2Powermeasuringreceiverspecification.34A.2.1IFfilter.34A.2.2Attenuationindicator.36A.2.3RMSvalueindicator.36A.2.4Oscillatorandamplifier.36History.37SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeElectromagneticcompatibilityandRadiospectrumMatters(ERM).Thepresentdocumentispart1ofamulti-partEuropeanStandard,thetitlesofwhichare:Part1:"Technicalcharacteristicsandmethodsofmeasurement".Part2:"HarmonizedENunderarticle3.2oftheR&TTEDirective".NationaltranspositiondatesDateofadoptionofthisEN:14July2000DateoflatestannouncementofthisEN(doa):31October2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30April2001DateofwithdrawalofanyconflictingNationalStandard(dow):30April2001SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)71ScopeThepresentdocumentspecifiestheminimumtechnicalcharacteristicsrequiredforUHFradioequipmentandsystemsoperatingonfrequenciesallocatedtothemaritimemobileservicesbytheITURadioRegulations,appendix20[1].2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,subsequentrevisionsdoapply.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ITURadioRegulations,appendix20:"Characteristicsofequipmentusedforon-boardcommunicationinthebandsbetween450and470MHz".[2]ETSIETR028:"RadioEquipmentandSystems(RES);Uncertaintiesinthemeasurementofmobileradioequipmentcharacteristics".[3]ITU-TRecommendationP.53(1988):"Psophometers(apparatusfortheobjectivemeasurementofcircuitnoise)".[4]ISO694:"Positioningofmagneticcompassesinships".3Definitions,symbolsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermanddefinitionapplies:modulationindex:ratiobetweenthefrequencydeviationandthemodulationfrequency3.2SymbolsForthepurposesofthepresentdocument,thefollowingsymbolapplies:dBAacousticlevelindBrelativeto2×10-5Pa3.3AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:emfElectro-MotiveForceRFRadioFrequencySINADsignal+noise+distortion/noise+distortionUHFUltraHighFrequencySIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)84Generalrequirements4.1ConstructionThemechanicalandelectricalconstructionandfinishoftheequipmentshallconforminallrespectstogoodengineeringpracticeandtheequipmentshallbesuitableforuseonboardships.Theequipment'scolourshallbeneitherorangenoryellow.4.2FrequenciesTheequipmentshalloperateeitheronsingle-frequencyortwo-frequencysimplexchannelsonthosefrequenciesspecifiedinappendix20oftheRadioRegulations[1].Table1:SinglefrequencysimplexchannelsChanneldesignatorFrequencyChannelA467,525MHzChannelB467,550MHzChannelC467,575MHzChannelD457,525MHzChannelE457,550MHzChannelF457,575MHzTable2:Two-frequencysimplexchannelsforusewithrepeateronlyChanneldesignatorTransmitfrequencyReceivefrequencyChannelG467,525MHz457,525MHzChannelH467,550MHz457,550MHzChannelJ467,575MHz457,575MHzIndependentselectionoftransmittingandreceivingfrequenciesshallnotbepossible.Theequipmentshallbefittedwithatleastonesingle-frequencysimplexchannel,thefrequencyofwhichshallbe457,525MHz.Itshallnotbepossibletotransmitduringchannel-switchingoperations.4.3ControlsTheequipmentshallhavethefollowingcontrols:-achannelselectorwhichshallindicatethedesignatorofthechanneltowhichtheequipmentisset;-on/offswitchfortheequipmentwithvisualindicationthattheequipmentisswitchedon;-amanualnon-locking,push-to-talkswitchtooperatethetransmitter;-anaudio-frequencypowervolumecontrol.Theusershallnothaveaccesstoanycontrolwhich,ifwronglyset,mightimpairthetechnicalcharacteristicsoftheequipment.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)94.4SwitchingtimeThechannelswitchingarrangementsshallbesuchthatthetimenecessarytochangeoverfromusingoneofthechannelstousinganyotherchanneldoesnotexceed5seconds.Thetimenecessarytochangeoverfromtransmissiontoreceptionandviceversa,shallnotexceed0,3seconds.4.5SafetyprecautionsProvisionshallbemadeforprotectingequipmentfromtheeffectsofexcessivecurrentorvoltage.Meansshallbeincorporatedtopreventreversalofpolarityofthebatterypowersupply.Equipmentwithanantennasocketshallnotbedamagedbytheeffectofopen-circuitorshort-circuitoftheantennasocketforaperiodofatleast5minutes.ThemanufacturershalldeclarethecompasssafedistanceaccordingtoISO694[4],MethodB.4.6ClassofemissionandmodulationcharacteristicsTheequipmentshallusephasemodulation,G3E(frequencymodulationwithapre-emphasisof6dB/octave).Theequipmentshallbedesignedtooperatewithachannelspacingof25kHz.4.7BatteryThebatterymaybeanintegralpartoftheequipment.Primaryand/orsecondarybatteriesmaybeused.Provisionsshallbemadeforreplacingthebatteryeasily.Iftheequipmentisfittedwithsecondarybatteries,asuitablebatterychargershallberecommendedbythemanufacturer.4.8LoudspeakerandmicrophoneTheequipmentshallbeprovidedwithamicrophoneandaloudspeakerwhichmaybecombined.Inthetransmitconditiontheoutputofthereceivershallbemuted.4.9LabellingAllcontrolsshallbeclearlylabelled.Thelabellingshallinclude:-thenameofthemanufacturerandhistrademark;-thetypenumberandserialnumberoftheequipment;and-thecompasssafedistance.4.10EquipmentdocumentationForthepurposeofconformancetestinginaccordancewiththepresentdocument,adequatetechnicalandoperationaldocumentationshallbesuppliedwiththeequipment.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)105Testconditions,powersourcesandambienttemperatures5.1NormalendextremetestconditionsTestsshallbemadeundernormaltestconditionsandalso,wherestated,underextremetestconditions.5.2TestpowersourceUnlessotherwisestated,thebatteryoftheequipmentshallbereplacedbyatestpowersourcecapableofproducingnormalandextremetestvoltagesasspecifiedinsubclauses5.3.2and5.4.2.Thevoltageofthepowersourceshallbemeasuredattheinputterminaloftheequipment.Duringtesting,thepowersourcevoltageshallbemaintainedwithinatoleranceof±3%relativetothevoltagelevelatthebeginningofeachtest.5.3Normaltestconditions5.3.1NormaltemperatureandhumidityThenormaltemperatureandhumidityconditionsfortestsshallbeacombinationoftemperatureandhumiditywithinthefollowinglimits:-temperature:+15°Cto+35°C;-relativehumidity:20%to75%.5.3.2NormaltestvoltageThenormaltestvoltageshallbethenominalvoltageofthebatteryasdeclaredbythemanufacturer.5.4Extremetestconditions5.4.1Extremetemperatures5.4.1.1UpperextremetemperatureTestsattheupperextremetemperatureshallbemadeat+55°C.5.4.1.2LowerextremetemperatureTestsatthelowerextremetemperatureshallbemadeat-20°C.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)115.4.2Extremetestpowersupplyvalues5.4.2.1UpperextremetestvoltageTheupperextremetestvoltageshallbedeclaredbythemanufacturerandshallnotbelowerthanthefollowing:-whenusingprimarybatteries,thevoltagecorrespondingtothevoltagethatafreshbatterygivesattheupperextremetemperaturewhenloadedwithaloadequaltothatoftheequipmentinthemutedreceivecondition;-whenusingsecondarybatteries,thevoltagecorrespondingtothevoltagethatafullychargedbatterygivesattheupperextremetemperaturewhenloadedwithaloadequaltothatoftheequipmentinthemutedreceivecondition.5.4.2.2LowerextremetestvoltageThelowerextremetestvoltageshallbedeclaredbythemanufacturerandshallnotbehigherthanthefollowing:-whenusingprimarybatteries,0,85timesthevoltagethatafreshbatterygivesatthelowerextremetemperaturewhenloadedwithaloadequaltothatoftheequipmentinthemutedreceivecondition;-whenusingsecondarybatteries,0,85timesthevoltagethatafullychargedbatterygivesatthelowerextremetemperaturewhenloadedwithaloadequaltothatoftheequipmentinthemutedreceivecondition.5.5ProcedurefortestsatextremetemperaturesTheequipmentshallbeplacedinthetestchamberatnormaltemperature.Themaximumrateifrisingorreducingthetemperatureofthechambershallbe1°C/minute.Theequipmentshallbeswitchedoffduringthetemperature-stabilisingperiods.Beforeconductingtestsatextremetemperatures,theequipmentinthetestchambershallhavereachedthermalequilibriumandbesubjectedtotheextremetemperatureforaperiodof10to16hours.Fortestsatthelowerextremetemperature,theequipmentshallthenbeswitchedontothestandbyorreceiveconditionforoneminute,afterwhichtherelevanttestsshallbeperformed.Fortestsatthehigherextremetemperature,theequipmentshallthenbeswitchedoninthehighpowertransmitconditionforhalfanhour,afterwhichtherelevanttestsshallbeperformed.Thetemperatureofthechambershallbemaintainedattheextremetemperaturesforthewholedurationoftheperformancetests.Attheendofthetest,andwiththeequipmentstillinthechamber,thechambershallbebroughttoroomtemperatureinnotlessthanonehour.Theequipmentshallthenbeexposedtonormalroomtemperatureandhumidityfornotlessthanthreehoursoruntilmoisturehasdispersed,whicheveristhelonger,beforethenexttestiscarriedout.Alternatively,observingthesameprecautions,theequipmentmaybereturneddirectlytotheconditionsrequiredforthestartofthenexttests.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)126Generalconditionsofmeasurement6.1TestconnectionsForthepurposeoftesting,suitableconnectionstothefollowingtestpointsshallbemadeavailable:-theantennaterminal(for50Ωconnection);-thetransmitteraudioinput(s);-thereceiveraudiooutput(s);-thepush-to-talkswitch;-thebatteryterminalsfortestpowersourceconnections.6.2Arrangementsfortestsignals6.2.1TestsignalsappliedtothetransmitterinputForthepurposeoftests,thetransmitterinternalmicrophoneshallbedisconnectedandanaudiofrequencysignalgeneratorshallbeappliedtothetransmitteraudioinputterminals.6.2.2TestsignalsappliedtotheantennaterminalTestsignalgeneratorsshallbeconnectedtotheantennaterminalinsuchawaythattheimpedancepresentedtothereceiverinputis50Ω,irrespectiveofwhetheroneormoretestsignalsareappliedsimultaneously.Thelevelsofthetestsignalsshallbeexpressedintermsoftheemf.Theeffectsofanyintermodulationproductandnoiseproductinthetestsignalgeneratorsshouldbenegligible.Thenominalfrequencyofthereceiveristhecarrierfrequencyoftheselectedchannel.6.3ReceivermuteorsquelchfacilityUnlessotherwisespecified,thereceiversquelchfacilityshallbemadeinoperativeforthedurationofthetests.6.4NormaltestmodulationFornormaltestmodulation,themodulationfrequencyshallbe1kHzandthefrequencydeviationshallbe±3kHz.6.5ArtificialantennaWhentestsareconductedwithanartificialantenna,thisshallbea50Ωnon-reactive,non-radiatingload.6.6TestchannelsForequipmentoperatinginboththe457MHzand467MHzbands,testsshallbecarriedoutatthehighestandlowestchannelswithinthefrequencyrangeoftheequipment,unlessotherwisestated.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)136.7Measurementuncertaintyandinterpretationofthemeasuringresults6.7.1MeasurementuncertaintyTable3:Absolutemeasurementuncertainties:maximumvaluesParameterMaximumuncertaintyRFfrequency±1x10-7RFpower±0,75dBMaximumfrequencydeviation:-within300Hzto6kHzofmodulationfrequency:-within6kHzto25kHzofmodulationfrequency:±5%±3dBDeviationlimitation±5%Adjacentchannelpower±5dBAudiooutputpower±0,5dBAmplitudecharacteristicsofreceiverlimiter±1,5dBSensitivityat20dBSINAD±3dBTwo-signalmeasurement±4dBThree-signalmeasurement±3dBConductedspuriousemissionoftransmitter±4dBConductedemissionofreceiver±3dBRadiatedemissionoftransmitter±6dBRadiatedemissionofreceiver±6dBTransmittertransienttime±20%Transmittertransientfrequency±250Hz6.7.2InterpretationofthemeasurementresultsTheinterpretationoftheresultsrecordedinatestreportforthemeasurementsdescribedinthepresentdocumentshallbeasfollows:-themeasuredvaluerelatedtothecorrespondinglimitwillbeusedtodecidewhetheranequipmentmeetstherequirementsofthepresentdocument;-thevalueofthemeasurementuncertaintyforthemeasurementofeachparametershallbeincludedinthetestreport;-therecordedvalueofthemeasurementuncertaintyshallbe,foreachmeasurement,equaltoorlowerthanthefiguresintable3.Forthetestmethods,accordingtothepresentdocument,themeasurementuncertaintyfiguresshallbecalculatedinaccordancewithETR028[2]andshallcorrespondtoanexpansionfactor(coveragefactor)k=1,96ork=2(whichprovideconfidencelevelsofrespectively95%and95,45%inthecasewherethedistributionscharacterizingtheactualmeasurementuncertaintiesarenormal(Gaussian)).Table3isbasedonsuchexpansionfactors.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)147Environmentaltests7.1ProcedureEnvironmentaltestsshallbecarriedoutbeforeanyothertestsofthesameequipmentinrespecttotheotherrequirementsofthepresentdocumentareperformed.Thetestsshallbecarriedoutintheordertheyappearinthepresentdocument.Unlessotherwisestated,theequipmentshallbeconnectedtoanelectricalpowersourceduringtheperiodsforwhichitisspecifiedthatelectricaltestsshallbecarriedout.Thesetestsshallbeperformedusingnormaltestvoltageandononechannelonly.7.2PerformancecheckForthepurposeofthepresentdocument,theterm"performancecheck"shallbetakentomean:-forthetransmitter:-carrierfrequency:-withthetransmitterconnectedtoanartificialantenna(seesubclause6.5),thetransmittershallbekeyedwithoutmodulation.Thecarrierfrequencyshallbewithin±2,3kHzofthenominalcarrierfrequency;-outputpower:-withthetransmitterconnectedtoanartificialantenna(seesubclause6.5),thetransmittershallbekeyedwithoutmodulation.Withtheoutputpowerswitchsetatmaximum,theoutputpowershallbebetween0,4Wand4W;-forthereceiver:-maximumusablesensitivity:-atestsignalatthenominalfrequencyofthereceivermodulatedwithnormaltestmodulation(seesubclause6.4)shallbeappliedtothereceiverinput.TheleveloftheinputsignalshallbeadjusteduntiltheSINADattheoutputofthereceiveris20dBandtheoutputpowerisatleasttheratedoutputpower(seesubclause9.1.3).Theleveloftheinputsignalshallbelessthan+12dBµV.7.3Droptestontoahardsurface7.3.1DefinitionTheimmunityagainsttheeffectsofdroppingistheabilityoftheequipmenttomaintainthespecifiedmechanicalandelectricalperformanceafterbeingsubjectedtoaseriesofdropsonahardwoodentestsurface.7.3.2MethodofmeasurementThehardwoodentestsurfaceshallconsistofapieceofsolidhardwoodwithaminimumthicknessof15cmandamassof30kgormore.Thetestshallconsistofaseriesof6drops,oneoneachsurfaceoftheequipment.Duringthetesttheequipmentshallbefittedwithasuitablesetofbatteriesandantennabutitshallbeswitchedoff.Thetestshallbecarriedoutundernormaltemperatureandhumidityconditions.Theheightofthelowestpartoftheequipmentundertestrelativetothetestsurfaceatthemomentofreleaseshallbe1m.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)15Iftheequipmentistobeusedwith,forexample,aseparatemicrophoneand/orloudspeaker,thetestshallbecarriedoutforthoseaccessoriesseparately.Followingthetest,theequipmentshallbesubjectedtoaperformancecheck.7.3.3RequirementTherequirementfortheperformancecheckshallbemet.7.4Temperaturetests7.4.1GeneralThemaximumrateofraisingorreducingthetemperatureofthechamberinwhichtheequipmentisbeingtestedshallbe1°C/minute.7.4.2Dryheat7.4.2.1MethodofmeasurementTheequipmentshallbeplacedinachamberofnormaltemperature.Thetemperatureshallthenberaisedtoandmaintainedat+70°C(±3°C)foraperiodofatleast10hours.Afterthisperiodanyclimaticcontroldeviceprovidedintheequipmentmaybeswitchedonandthechambercooledto55°C(±3°C).Thecoolingofthechambershallbecompletedwithin30minutes.Theequipmentshallthenbeswitchedonandshallbekeptworkingcontinuouslyforaperiodoftwohours.Thetransmittershallbekeyedwithadutycycleofoneminutetransmissionandfourminutesreception.Theequipmentshallbesubjectedtoaperformancecheckduringthetwo-hourperiod.Thetemperatureofthechambershallbemaintainedat+55°C(±3°C)duringthetwo-hourperiod.Attheendofthetest,andwiththeequipmentstillinthechamber,thechambershallbebroughttoroomtemperatureinnotlessthanonehour.Theequipmentshallthenbeexposedtonormalroomtemperatureandhumidityfornotlessthanthreehoursbeforethenexttestiscarriedout.7.4.2.2RequirementTherequirementfortheperformancecheckshallbemet.7.4.3Dampheat7.4.3.1MethodofmeasurementTheequipmentshallbeplacedinachamberatnormalroomtemperatureandhumiditywhich,steadily,overaperiodthreehours(±30minutes),shallbeheatedfromroomtemperatureto+40°C(±3°C)andshallduringthisperiodbebroughttoarelativehumidityof93%(±2%)sothatexcessivecondensationisavoided.30minuteslatertheequipmentshallbeswitchedon,andshallthenbekeptworkingcontinuouslyforaperiodoftwohours.Thetransmittershallbekeyedwithadutycycleofoneminutetransmissionandfourminutesreception.Theequipmentshallbesubjectedtoaperformancecheckduringthetwo-hourperiod.Thetemperatureandrelativehumidityofthechambershallbemaintainedat+40°C±3°Cand93%±2%duringthetwo-hour,30minutesperiod.Attheendofthetest,andwiththeequipmentstillinthechamber,thechambershallbebroughttoroomtemperatureinnotlessthanonehour.Theequipmentshallthenbeexposedtonormalroomtemperatureandhumidityfornotlessthanthreehours,oruntilmoisturehasdispersed,whicheverislonger,beforethenexttestiscarriedout.SIST EN 300 720-1 V1.2.1:2003
ETSIETSIEN300720-1V1.2.1(2000-08)167.4.3
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