1、NORMEINTERNATIONALECEIIECINTERNATIONALSTANDARD61188-1-2Premire ditionFirst edition1998-04Cartes imprimes et cartes imprimes quipes Conception et utilisation Partie 1-2:Prescriptions gnriques Impdance contrlePrinted boards and printed board assemblies Design and use Part 1-2:Generic requirements Cont
2、rolled impedanceNumro de rfrenceReference numberCEI/IEC 61188-1-2:1998LICENSED 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.Publication
3、s consolidesLes versions consolides de 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 am
4、endements 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 technique.Des renseignements relatifs la date dereconfirmation de la publication sont disponibles dansle Catalogue de la CEI.Les renseigne
5、ments relatifs des questions ltude etdes travaux en cours 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 jour rgulireme
6、nt(Catalogue en ligne)*Bulletin de la CEIDisponible la fois au site web de la CEI*etcomme priodique imprimTerminologie,symboles graphiqueset littrauxEn ce qui concerne la terminologie gnrale,le lecteurse reportera la CEI 60050:Vocabulaire Electro-technique International(VEI).Pour les symboles graphi
7、ques,les symboles littrauxet les signes dusage gnral approuvs par la CEI,lelecteur consultera 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
8、 pour schmas.*Voir adresse site web sur la page de titre.NumberingAs from 1 January 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
9、 and 1.2 refer,respectively,tothe base publication,the base publicationincorporating amendment 1 and the base publicationincorporating amendments 1 and 2.Validity of this publicationThe technical content of IEC publications is kept underconstant review by the IEC,thus ensuring that thecontent reflec
10、ts current technology.Information relating to the date of the reconfirmation ofthe 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 publicat
11、ions 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*and as aprinted periodicalTerminology,graphical and lettersymbolsFor general terminology,readers ar
12、e 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:Letter symbols tobe used in electrical technology,IEC 60417:Graphicalsymbols for use on equipment.
13、Index,survey andcompilation of the single sheets and IEC 60617:Graphical symbols for diagrams.*See web site address on title page.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.NORMEINTERNATIONALECEIIECINTERNATIONALSTANDARD61188-1-2Pr
14、emire ditionFirst edition1998-04Cartes imprimes et cartes imprimes quipes Conception et utilisation Partie 1-2:Prescriptions gnriques Impdance contrlePrinted boards and printed boards assemblies Design and use Part 1-2:Generic requirements Controlled impedance Commission Electrotechnique Internation
15、ale International Electrotechnical CommissionPour prix,voir catalogue en vigueurFor price,see current catalogue IEC 1998 Droits de reproduction rservs Copyright-all rights reservedAucune partie de cette publication ne peut tre reproduite niutilise sous quelque forme que ce soit et par aucunprocd,lec
16、tronique ou mcanique,y compris la photo-copie et les 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 photocopying and microfilm,without permission inwriting from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chCODE PRIXPRICE CODEXLICENSED TO MECON Limited.-RANCHI/BANGALOREFO
