1、NORME?CEIINTERNATIONALE?IECINTERNATIONAL?60244-3BSTAN DARDPremire ditionFirst edition1972-01Deuxime complment la Publication 60244-3(1972)Mthodes de mesure applicables auxmetteurs radiolectriquesTroisime partie:Modulation utile et modulation parasite Modulation parasiteSecond supplement to Publicati
2、on 60244-3(1972)Methods of measurement for radio transmittersPart 3:Wanted and unwanted modulation Unwanted modulation,including hum andnoise modulationIECNumro de rfrenceReference numberCEI/IEC 60244-3B:1972LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED B
3、Y BOOK SUPPLY BUREAU.Numros des publicationsDepuis le 1er janvier 1997,les publications de la CEIsont numrotes partir de 60000.Publications consolidesLes versions consolides de certaines publications dela CEI incorporant les amendements sont disponibles.Par exemple,les numros ddition 1.0,1.1 et 1.2i
4、ndiquent respectivement la publication de base,lapublication de base incorporant lamendement 1,et lapublication de base incorporant les amendements 1et 2.Validit de la prsente publicationLe contenu technique des publications de la CEI estconstamment revu par la CEI afin quil reflte ltatactuel de la
5、technique.Des renseignements relatifs la date de reconfir-mation de la publication sont disponibles dans leCatalogue de la CEI.Les renseignements relatifs des questions ltude etdes travaux en cours entrepris par le comit techniquequi a tabli cette publication,ainsi que la liste despublications tabli
6、es,se trouvent dans les documents ci-dessous:Site web de la CEI*Catalogue des publications de la CEIPubli annuellement et mis jourrgulirement(Catalogue en ligne)*Bulletin de la CEIDisponible la fois au site web de la CEI*et comme priodique imprimTerminologie,symboles graphiqueset littrauxEn ce qui c
7、oncerne la terminologie gnrale,le lecteurse reportera la CEI 60050:Vocabulaire Electro-technique International(VEI).Pour les symboles graphiques,les symboles littrauxet les signes dusage gnral approuvs par la CEI,lelecteur consultera la CEI 60027:Symboles littraux utiliser en lectrotechnique,la CEI
8、60417:Symbolesgraphiques utilisables sur le matriel.Index,relev etcompilation des feuilles individuelles,et la CEI 60617:Symboles graphiques pour schmas.NumberingAs from 1 January 1997 all IEC publications areissued with a designation in the 60000 series.Consolidated publicationsConsolidated version
9、s of some IEC publicationsincluding amendments are available.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,tothe base publication,the base publication incor-porating amendment 1 and the base publicationincorporating amendments 1 and 2.Validity of this publicationThe technical conten
10、t of IEC publications is keptunder constant review by the IEC,thus ensuring thatthe content reflects current technology.Information relating to the date of the reconfirmationof the publication is available in the IEC catalogue.Information on the subjects under consideration andwork in progress under
11、taken by the technicalcommittee which has prepared this publication,as wellas the list of publications issued,is to be found at thefollowing IEC sources:IEC web site*Catalogue of IEC publicationsPublished yearly with regular updates(On-line catalogue)*IEC BulletinAvailable both at the IEC web site*a
12、ndas a printed periodicalTerminology,graphical and lettersymbolsFor general terminology,readers are referred toIEC 60050:International Electrotechnical Vocabulary(IEV).For graphical symbols,and letter symbols and signsapproved by the IEC for general use,readers arereferred to publications IEC 60027:
13、Letter symbols tobe used in electrical technology,IEC 60417:Graphicalsymbols for use on equipment.Index,survey andcompilation of the single sheets and IEC 60617:Graphical symbols for diagrams.*Voir adresse site web sur la page de titre.?*See web site address on title page.LICENSED TO MECON Limited.-
14、RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.CODE PRIXPRICE CODEPNORME?CEIINTERNATIONALE?IECINTERNATIONAL?60244-3BSTAN DARD?Premire ditionFirst edition1972-01Deuxime complment la Publication 60244-3(1972)Mthodes de mesure applicables auxmetteurs radiolectriqu
15、esTroisime partie:Modulation utile et modulation parasite Modulation parasiteSecond supplement to Publication 60244-3(1972)Methods of measurement for radio transmittersPart 3:Wanted and unwanted modulation Unwanted modulation,including hum andnoise modulation IEC 1972 Droits de reproduction rservs C
16、opyright-all rights reservedAucune partie de cette publication ne peut tre reproduite ni?No part of this publication may be reproduced or utilized inutilise sous quelque forme que ce soit et par aucun?any form or by any means,electronic or mechanical,procd,lectronique ou mcanique,y compris la photo-?including photocopying and microfilm,without permission incopie et les microfilms,sans laccord crit de lditeur.?writing from the publisher.International Electrotechnical Commission?3,rue de Varemb Ge
