1、INTERNATIONAL STANDARD IEC 60489-2 1991 AMENDMENT 1 1999-07 Amendment 1 Methods of measurement for radio equipment used in the mobile services Part 2: Transmitters employing A3E, F3E or G3E emissions Amendement 1 Mthodes de mesure applicables au matriel de radiocommunication utilis dans les services
2、 mobiles Partie 2: Emetteurs utilisant les missions A3E, F3E ou G3ECommission Electrotechnique InternationaleInternational Electrotechnical Commission For price, see current catalogue IEC 1999 Copyright - all rights reserved International Electrotechnical Commission 3, rue de Varemb Geneva, Switzerl
3、and Telefax: +41 22 919 0300 e-mail: inmailiec.ch IEC web site http:/www.iec.ch PRICE CODE T2 604892Amend.1 IEC:1999(E) FOREWORD ThisamendmenthasbeenpreparedbyIECtechnicalcommittee102:Equipmentusedinradio communicationsformobileservicesandforsatellitecommunicationsystems. Thetextofthisamendmentisbas
4、edonthefollowingdocuments: FDIS Reportonvoting 102/43/FDIS 102/52/RVD Fullinformationonthevotingfortheapprovalofthisamendmentcanbefoundinthereporton votingindicatedintheabovetable. Abilingualversionofthisamendmentmaybeissuedatalaterdate. Page3 CONTENTS Insert,afterclause12,thefollowingnewclause13: 1
5、3 Modulationsensitivity. Renumbertheexistingclause13andamenditstitleasfollows: 14 Totaldistortionfactor . Renumberclause14asclause15. Insertthefollowingnewclause16. 16 Compressorcharacteristics . Renumbertheexistingclauses15,16,17and18,as17,18,19and20,respectively. APPENDICES DeleteappendicesBandD.
6、RenameappendixCasappendixB.604892Amend.1IEC:1999(E) 3 Page5 PREFACE Add,inthelistofquotedpublications,after602446(1976)thefollowing: 602447(1979): Part7:Cabinetradiationatfrequenciesabove1GHz Add,under604891(1983)thefollowing: Amendment1(1996) Amendment2 1) Withregardtoamendment2,addthefollowingfoot
7、note: Add,under604893(1988)thefollowing: ITUTRecommendationO.41(1994):Psophometerforuseontelephonetypecircuits Page7 SECTION1:GENERAL,SUPPLEMENTARYDEFINITIONSANDCONDITIONS OFMEASUREMENT 5.4 Limitationofthemeasuringaudiofrequencyband Replace,onpage11,thissubclausebythefollowing: Becausesomeproperties
8、,forexamplenoiseandaudiofrequencyharmonicdistortion,depend upontheaudiofrequencybandwidthofthetestequipment,reproducibleresultscanbe obtainedonlywhenthebandofaudiofrequenciesoccupiedbythedemodulatedsignalis restrictedtospecifiedlimits. Thisrestrictionmaybeaccomplishedbymeansofabandlimitingfilterprec
9、edinganyaudio frequencymeasuringdeviceandadaptedtothetypeofsignalstobetransmitted.Thefiltermay beincorporatedwithinthemeasuringequipment.Whenmeasuringresidualhumandnoise, onlythelowpassportionofthefilterneedbespecified(seeappendixA). Page13 SECTION2:METHODSOFMEASUREMENT 8.3.2 Methodofmeasurementatth
10、eantennaterminals Add,onpage15,thefollowingsentenceto8.3.2a): Ifthebandrejectionfilterexhibitsunwantedattenuation(certaintypesofbandrejectionfilters, suchasthoseconstructedwithtransmissionlinesorcavities,canhaveunwantedattenuation atoddmultiplesofthecentrefrequencyoftherejectionbandwidth),forthemeas
11、urementof spuriouscomponentsatandabovethesecondharmonicofthecarrierfrequency,theband rejectionfiltershallbereplacedbyahighpassfilterwhosecutofffrequencyisapproximately 1,5timesthecarrierfrequency. 1) Tobepublished.4 604892Amend.1 IEC:1999(E) Page17 Replace,infigure2,thetextoflegend8bythefollowing: b
12、andrejectionfilterorhighpassfilter(ifneeded) Page19 8.4.3 Methodofmeasurement Add,attheendof8.4.3e),thefollowingnote: NOTEThepermissibleinputlevelwhichdoesnotdegradethereceiverperformancecanbecalculatedfrom P rt =P t A P r +S 10dBm where P rt isthepermissiblereceiverinputlevel,indecibels(dBm); P t i
13、sthecarrierpoweroftransmitterundertest,indecibelspermetre(dBm); A istheattenuationrecordedinstepe),indecibels(dB); P r isthereferencesensitivityofthetestreceiver,indecibelspermetre(dBm); S istheselectivityofthereceiver,indecibels(dB). Page29 Add,before8.5.7a),thefollowingnote1: NOTE1Thismethodofmeas
14、urementcanbeappliedtothetransmitterthathasamodulatingsignalwhichis superimposedonthespeechsignalandcannotbeturnedoff(e.g.continuoustonecontrolledsquelchsystems). Add,to8.5.7b),thefollowingnote2: NOTE2Inthecaseoftransmittersthathaveamodulatingsignalwhichissuperimposedonthespeechsignal andcannotbeturn
15、edoff(e.g.continuoustonecontrolledsquelchsystems),operatethetransmitterinmodulated conditionatthepowerlevelspecifiedbythemanufacturer(whichmaycorrespondtothecarrierpowermeasuredas describedin8.2). Page33 9 Radiatedradiofrequencypower Replacethetextofthisclausebythefollowing: Thesemeasurementsareusua
16、llymadeonlyontransmittershavingintegralantennas. 9.1 General Theradiatedradiofrequencypoweroutputofatransmittermaycontain averageradiatedcarrierpower(see9.2); maximumeffectiveradiatedcarrierpower(see9.3); RFM(randomfieldmeasurement)radiatedcarrierpower(see9.4); RFCDradiatedcarrierpower(see9.5); modu
17、lationcomponentsdeterminingtransmissionquality(seeclauses12,13,14and16);604892Amend.1IEC:1999(E) 5 othermodulationcomponents(ponentscontributingtotheadjacentchannelpower) (see9.8); spuriousnarrowbandwidthcomponents(see9.6); noise,bothinsidetheband(seeclause18)andoutsidetheband,whereitiscalled spurio
18、ustransmitternoise(see9.7); intertransmitterintermodulationproducts(seeclause11),and cabinetradiation(see9.9). Themeasuredlevelsmaybeduetotheradiationfromtheantenna,audiolines,controllines, powermainsorfromthecabinet.Thesemeasurementsgenerallyrequiretheuseofatest siteoranRFCD.Guidesfortheuseofsuchte
19、stsitesandRFCDsaregiveninIEC604891, annexA. 9.2 Averageradiatedcarrierpowerfortransmitterswithintegralantennas 9.2.1 Definition Averageoftheradiatedcarrierpowersineightdirectionsdistributedat45anglesinthe horizontalplane. NOTETheaverageradiatedcarrierpowercanbemeasuredinOATS(openareatestsites)orinLR
20、TS(low reflectiontestsites)orinAC(anechoicchambers).MeasuredvaluesinOATSmaydifferfromthevaluesmeasured intheothertwotestsitesbecauseofthegroundreflectedwaveeffect. 9.2.2 Methodofmeasurement a) Choosethetestsiteandthemeasuringdistancesuitableforthefrequency,theenvironmental conditions,therequiredmeas
21、urementerrorandtransmitterdimensions,fromthose describedinannexAofIEC604891. b) Placetheequipmentundertestasillustratedinasubclauseforthechosentestsiteinthe abovementionedannex. c) Measurethenormaldirectionradiatedpowerbythebasicmeasuringproceduredescribed inthesubclause. NOTEThenormaldirectionofthe
22、equipmentundertestisusuallytheoperationsideandisspecifiedbythe manufacturer.ThenormaldirectionmaybethespecificdirectionusedforRFCDcalibrationmeasurements. d) Rotatetheequipmentundertest45clockwiseandmeasurethisdirectionradiatedpower bythesameprocedureasinstepc). e) Repeatstepd)untilvalueshavebeenobt
23、ainedforeightazimuthpositions. 9.2.3 Presentationofresults Calculatetheaverageofeightvaluesmeasuredinstepd).Recordmeasurementconditionsof thetestsite. 9.3 Maximumeffectiveradiatedcarrierpower 9.3.1 Maximumeffectiveradiatedcarrierpowerinthehorizontalplane 9.3.1.1 Definition Maximumeffectiveradiatedca
24、rrierpowerinthehorizontalplane. NOTEThemaximumradiatedcarrierpowercanbemeasuredinOATS,LRTSorAC.MeasuredvaluesinOATS maydifferfromthevaluesmeasuredintheothertwotestsitesbecauseofthegroundreflectedwaveeffect.6 604892Amend.1 IEC:1999(E) 9.3.1.2 Methodofmeasurementforthemaximumeffectiveradiatedcarrierpo
25、wer inthehorizontalplane a) Choosethetestsiteandthemeasuringdistancesuitableforthefrequency,theenvironmental conditions,therequiredmeasurementerrorandtransmitterdimensions,fromthose describedinannexAofIEC604891. b) Placethetransmitterundertestasillustratedinasubclauseforthechosentestsiteinthe abovem
26、entionedannex.Calibratethetestsite. c) Measurethenormaldirectionradiatedpowerbythebasicmeasuringprocedurefor radiationmeasurementdescribedintheabovementionedsubclause. NOTEThenormaldirectionoftheequipmentundertestisusuallytheoperationsideandisspecifiedbythe manufacturer.Thenormaldirectionmaybethespe
27、cificdirectionusedforRFCDcalibrationmeasurements. d) Rotatethetransmitterundertestinthehorizontalplaneandfindthedirectionwhichhasthe maximumindicationonthepowermeasuringdevice.Notethemaximumindication. 9.3.1.3 Presentationofresults Calculatethemaximumeffectiveradiatedcarrierpowerinthehorizontalplane
28、andrecordthe directioninstepd). 9.3.2 Maximumeffectiveradiatedcarrierpoweronasphericalsurface 9.3.2.1 Definition Maximumvalueofeffectiveradiatedcarrierpowerobservedonaclosedsurfacesurrounding anantenna. NOTEThemaximumradiatedcarrierpowercanbemeasuredinLRTSorinAC. 9.3.2.2 Methodofmeasurementforthemax
29、imumeffectiveradiatedcarrierpower onasphericalsurface Followtheproceduredescribedinitemsa)toc)of9.3.1.2. d) Rotatethetransmitterundertestinthehorizontalplaneandfindthedirectionwhichhasthe maximumindicationontheselectivemeasuringdevice. e) Rotatethetransmitterundertest90 intheverticalplanekeepingthed
30、irectionfoundin stepd)tothemeasuringantenna. f) Orientthemeasuringantennasothatitishorizontallypolarized.Rotatethetransmitter undertestinthehorizontalplaneandnotethemaximumindication.Thiswillbethe directionwhichhasthemaximumradiatedcarrierpoweronasphericalsurface. g) Ifanotherdirectionoffersmoreradi
31、atedcarrierpower,confirmitforthatdirectionby repeatingstepd)tostepf). 9.3.2.3 Presentationofresults Calculatethemaximumeffectiveradiatedcarrierpowerinstepf)andrecordthedirectionin stepd)asthehorizontalplanedirectionandthedirectioninstepf)astheverticalplane direction. 9.4 RFM(randomfieldmeasurement)r
32、adiatedcarrierpower 9.4.1 Definition Medianofradiatedcarrierpowermeasurementstakenalongarandompathinarandomfield. NOTETheRFMradiatedcarrierpowercanbemeasuredintheRFMsite.604892Amend.1IEC:1999(E) 7 9.4.2 Methodofmeasurement a) ConfirmtheconstructionparameteroftheRFMsiteandpositionthetransmitterundert
33、est asillustratedinannexAofIEC604891. b) MeasuretheRFMradiatedcarrierpowerbythebasicmeasuringproceduredescribedinthe abovementionedannex. 9.4.3 Presentationofresults RecordtheRFMradiatedcarrierpower,thepathlengthandtheDDDvaluemeasuredinstepb). NOTETheDDDvalueexpressesthemeasuringerrororrepeatability
34、inthetestsiteevaluationmeasurement describedintheabovementionedannex. 9.5 RFCD(radiofrequencycouplingdevice)radiatedcarrierpower 9.5.1 Definition SignallevelattheoutputofanRFCD,inwhichthetransmitterundertestoperates,calibrated bythespecificdirectionradiatedcarrierpowerinatestsite. 9.5.2 Methodofmeas
35、urement a) ChoosetheRFCDforthefrequencyandsizeofthetransmitterundertestfromthose describedinannexAofIEC604891. b) CalibrateorconfirmthecalibrationvaluefortheoutputsignalleveloftheRFCD.The calibrationshouldbeperformedwiththecalibrationmethodforthechosenRFCDdescribed inthesubclauseoftheabovementioneda
36、nnex. c) Placethetransmitterundertestinthespecifiedpositionandinthespecifieddirectionand activatethetransmitter. d) MeasuretheoutputleveloftheRFCD. 9.5.3 Presentationofresults CalculatetheRFCDradiatedcarrierpowerfromtherelationofthevaluesinstepb)and stepd).Recordtheposition,thedirectionofthetransmit
37、terundertestintheRFCD,andthe calibrationvalue. 9.6 Radiatedspuriousnarrowbandwidthcomponents Themethodsofmeasurementfortheradiatedspuriousnarrowbandwidthcomponentsare principallythesameasthoseoftheradiatedcarrierpowerdescribedin9.2to9.5.Theonly differenceforradiatedspuriousmeasurementisthepresenceof
38、averyhighlevelcarrier. Therefore,themeasurementconditionsarethesameasthecombinationoftheaboveradiated carrierpowermeasurementandthemeasurementoftheterminalspuriousnarrowbandwidth radiofrequencycomponentsin8.3. Thedifferentkindsofradiatedspuriousnarrowbandwidthcomponentsareasfollows: averageradiateds
39、puriousnarrowbandwidthcomponents; maximumradiatedspuriousnarrowbandwidthcomponents; RFMradiatedspuriousnarrowbandwidthcomponents; RFCDradiatedspuriousnarrowbandwidthcomponents. 9.7 Radiatedspurioustransmitternoise 9.7.1 Definition Continuousspectrumofnoisecomponentsradiatedbytransmitterswithintegral
40、antennas. NOTEFormoregeneralinformation,see8.4.1.8 604892Amend.1 IEC:1999(E) 9.7.2 Methodofmeasurement ThismethodusestheRFCDornearfieldcouplingofthetransmitterandthetestantennain theFaradaycage(ifnecessary)andtheoutputoftheRFCD,orthetestantennaismeasured withthesamemethodasforoneoftheterminalradiofr
41、equencypowers,forexample8.4.The methodusestheratiomeasurement,andthecouplingoftheRFCDorthecouplingofthe transmitterandthetestantennaiscalculatedfromtheradiatedcarrierpowermeasuredas describedin9.2. 9.8 Radiatedadjacentchannelpower 9.8.1 Definition Thatpartofthetotalpower,underdefinedconditionsofmodu
42、lation,whichfallswithina specifiedbandwidthcentredonthecentrefrequencyofeitheroftheadjacentchannelsradiated fromtransmitterswithintegralantennas. 9.8.2 Methodofmeasurement ThismethodusestheRFCDornearfieldcouplingofthetransmitterandthetestantennain theFaradaycage(ifnecessary),andtheoutputoftheRFCDorthetestantennaismeasured withthesamemethodforoneoftheterminalradiofrequencypowers,forexample8.5.The methodusestheratiomeasurement,andthecouplingoftheRFCDorthecouplingofthe transmitterandthetestantennaiscalculatedfromtheradiatedca
