1、NORMEINTERNATIONALEINTERNATIONALSTANDARDCEIIEC712Deuxime ditionSecond edition1993-06Systme cassette bande vido balayagehlicodal utilisant la bande magntiquede 19 mm(3%in),dappellation format-UHelical-scan video-tape cassette systemusing 19 mm(3/a in)magnetic tape,known as U-formatIECNumro de rfrence
2、Reference numberCEI/IEC 712:1993LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Numros des publicationsDepuis le 1er janvier 1997,les publications de la CEIsont numrotes partir de 60000.Publications consolidesLes versions consolides de
3、 certaines publications dela CEI incorporant les amendements sont disponibles.Par exemple,les numros ddition 1.0,1.1 et 1.2indiquent respectivement la publication de base,lapublication de base incorporant lamendement 1,et lapublication de base incorporant les amendements 1et 2.Validit de la prsente
4、publicationLe contenu technique des publications de la CEI estconstamment revu par la CEI afin quil reflte ltatactuel de la 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 e
5、tdes travaux en o,urs entrepris par le comit techniquequi a tabli cette publication,ainsi que la liste despublications tablies,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)*Bufietin de la
6、 CEIDisponible la fois au site web de la CEI*et comme priodique imprimTerminologie,symboles graphiqueset littrauxEn ce qui concerne la terminologie gnrale,le lecteurse reportera la CEI 60050:Vocabulaire lectro-technique International(VEI).Pour les symboles graphiques,les symboles littrauxet les sign
7、es d sage gnral approuvs par la CEI,lelecteur consulterG la CEI 60027:Symboles littraux utiliser en lectrotechnique,la CEI 60417:Symbolesgraphiques utilisables sur le matriel.Index,relev etcompilation des feuilles individuelles,et la CEI 60617:Symboles graphiques pour schmas.NumberingAs from 1 Janua
8、ry 1997 all IEC publications areissued with a designation in the 60000 series.Consolidated publicationsConsolidated versions 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-por
9、ating amendment 1 and the base publicationincorporating amendments 1 and 2.Validity of this publicationThe technical content 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
10、the publication is available in the IEC catalogue.Information on the subjects under consideration andwork in progress undertaken 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 o
11、f IEC publicationsPublished yearly with regular updates(On-line catalogue)*IEC BulletinAvailable both at the IEC web site*andas a printed periodicalTerminology,graphical and lettersymbolsFor general terminology,readers are referred toIEC 60050:International Electrotechnical Vocabulary(IEV).For graph
12、ical symbols,and letter symbols and signsapproved by the IEC for general use,readers arereferred to publications IEC 60027: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 symbol
13、s for diagrams.*Voir adresse site web sur la page de titre.?*See web site address on title page.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.NORMEINTERNATIONALEINTERNATIONALSTANDARDCEII EC712Deuxime ditionSecond edition1993-06Systme
14、 cassette bande vido balayagehlicodal utilisant la bande magntiquede 19 mm(3/a in),dappellation format-UHelical-scan video-tape cassette systemusing 19 mm(34 in)magnetic tape,known as U-format CEI 1993 Droits de reproduction rservs Copyright all rights reservedAucune partie de cette publication ne p
15、eut tre reproduite niutilise sous quelque fourre que ce soit et par aucun pro-cd,lectronique ou mcanique,y compris la photocopie etles microfilms,sans laccord crit de lditeur.No part of this publication may be reproduced or utilized inany form or by any means,electronic or mechanical,including photo
16、copying and microfilm,without permissionin writing from the publisher.Bureau Central de la Commission Electrotechnique Internationale 3,rue de Varemb Genve,SuisseCommission Electrotechnique InternationaleInternational Electrotechnical CommissionMewayHapoaHaa 3neinporexHuecKaa KoMHccun?CODE PRIXPRICE CODEPour prix,voir catalogue en vigueurFor price,see current catalogueIECXLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2?712CEI:199
