1、TECHNICALREPORTIEC TR 62064First edition1999-07Radio-frequency cables Relationship between surface transferimpedance and screening attenuation(A background to the recommended limitscontained in IEC 61196-1,clause 14)Cblages pour frquences radiolectriques Relation entre limpdance de transfert en surf
2、aceet laffaiblissement dcranReference numberIEC/TR 62064:1999(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.NumberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.Consolidated publicat
3、ionsConsolidated versions of some IEC publications including amendments areavailable.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to thebase publication,the base publication incorporating amendment 1 and the basepublication incorporating amendments 1 and 2.Validity of this publicat
4、ionThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to the date of the reconfirmation of the publication is availablein the IEC catalogue.Information on the subjects under consideration
5、and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is to be found at the following IEC sources:IEC web site*Catalogue of IEC publicationsPublished yearly with regular updates(On-line catalogue)*IEC BulletinAvailable
6、 both at the IEC web site*and as a printed periodicalTerminology,graphical and letter symbolsFor general terminology,readers are referred to IEC 60050:InternationalElectrotechnical Vocabulary(IEV).For graphical symbols,and letter symbols and signs approved by the IEC forgeneral use,readers are refer
7、red to publications IEC 60027:Letter symbols to beused in electrical technology,IEC 60417:Graphical symbols for use on equipment.Index,survey and compilation of the single sheets and IEC 60617:Graphical symbolsfor diagrams.*See web site address on title page.LICENSED TO MECON Limited.-RANCHI/BANGALO
8、REFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TECHNICALREPORTIECTR 62064First edition1999-07Radio-frequency cables Relationship between surface transferimpedance and screening attenuation(A background to the recommended limitscontained in IEC 61196-1,clause 14)Cblages pour
9、frquences radiolectriques Relation entre limpdance de transfert en surfaceet laffaiblissement dcranPRICE CODE IEC 1999 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,witho
10、ut permission in writing from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chNFor price,see current catalogue Commission Electrotechnique Internationale International Electrotechnical Co
11、mmissionLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TR 62064 IEC:1999(E)CONTENTSPageFOREWORD.3Clause1Scope.42General.43Correlation between measured screening attenuation as and measured surface transferimpedances at 30 MHz and 30
12、0 MHz.64Recommended limits for surface transfer impedance and screening attenuation.65Reference documents.14LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TR 62064 IEC:1999(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_RADIO-FREQUENCY
13、 CABLES RELATIONSHIP BETWEEN SURFACETRANSFER IMPEDANCE AND SCREENING ATTENUATION(A background to the recommended limits containedin IEC 61196-1,clause 14)FOREWORD1)The IEC(International Electrotechnical Commission)is a worldwide organization for standardization comprisingall national electrotechnica
14、l committees(IEC National Committees).The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields.Tothis end and in addition to other activities,the IEC publishes International Standards.Their preparation isentrust
15、ed to technical committees;any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work.International,governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation.The IEC collaborates closely with the Internation
16、al Organizationfor Standardization(ISO)in accordance with conditions determined by agreement between the twoorganizations.2)The formal decisions or agreements of the IEC on technical matters express,as nearly as possible,aninternational consensus of opinion on the relevant subjects since each technical committee has representationfrom all interested National Committees.3)The documents produced have the form of recommendations for international use and are published in the formof standards,techni
