IEC-TR-62064-1999.pdf
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1、TECHNICAL REPORT IEC TR 62064 First edition 1999-07 Radio-frequency cables Relationship between surface transfer impedance and screening attenuation (A background to the recommended limits contained in IEC 61196-1, clause 14) Cblages pour frquences radiolectriques Relation entre limpdance de transfe
2、rt en surface et laffaiblissement dcran Reference number IEC/TR 62064:1999(E) Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/06/2007 06:27:50 MSTNo reproduction or networking permit
3、ted without license from IHS -,-,- Numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. Consolidated publications Consolidated versions of some IEC publications including amendments are available. For example, edition numbers 1.0, 1.1 and 1.2 refer
4、, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2. Validity of this publication The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects
5、current technology. Information relating to the date of the reconfirmation of the publication is available in the IEC catalogue. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publ
6、ications issued, is to be found at the following IEC sources: IEC web site* Catalogue of IEC publications Published yearly with regular updates (On-line catalogue)* IEC Bulletin Available both at the IEC web site* and as a printed periodical Terminology, graphical and letter symbols For general term
7、inology, readers are referred to IEC 60050: International Electrotechnical Vocabulary (IEV). For graphical symbols, and letter symbols and signs approved by the IEC for general use, readers are referred to publications IEC 60027: Letter symbols to be used in electrical technology, IEC 60417: Graphic
8、al symbols for use on equipment. Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols for diagrams. * See web site address on title page. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=l
9、istmgr, listmgr Not for Resale, 03/06/2007 06:27:50 MSTNo reproduction or networking permitted without license from IHS -,-,- TECHNICAL REPORT IEC TR 62064 First edition 1999-07 Radio-frequency cables Relationship between surface transfer impedance and screening attenuation (A background to the reco
10、mmended limits contained in IEC 61196-1, clause 14) Cblages pour frquences radiolectriques Relation entre limpdance de transfert en surface et laffaiblissement dcran PRICE CODE IEC 1999 Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any me
11、ans, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission3, rue de Varemb Geneva, Switzerland Telefax: +41 22 919 0300e-mail: inmailiec.ch IEC web site http:/www.iec.ch G For price, see current cat
12、alogue Commission Electrotechnique Internationale International Electrotechnical Commission Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/06/2007 06:27:50 MSTNo reproduction or net
13、working permitted without license from IHS -,-,- 2 TR 62064 IEC:1999(E) CONTENTS Page FOREWORD . 3 Clause 1Scope 4 2General 4 3Correlation between measured screening attenuation as and measured surface transfer impedances at 30 MHz and 300 MHz 6 4Recommended limits for surface transfer impedance and
14、 screening attenuation . 6 5Reference documents 14 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/06/2007 06:27:50 MSTNo reproduction or networking permitted without license from IH
15、S -,-,- TR 62064 IEC:1999(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RADIO-FREQUENCY CABLES RELATIONSHIP BETWEEN SURFACE TRANSFER IMPEDANCE AND SCREENING ATTENUATION (A background to the recommended limits contained in IEC 61196-1, clause 14) FOREWORD 1)The IEC (International Electrotechnical
16、Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end a
17、nd in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizati
18、ons liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2)The formal decisions or agreements of the IEC on technical
19、 matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees. 3)The documents produced have the form of recommendations for international use and are published in the
20、form of standards, technical reports, technical specifications or guides and they are accepted by the National Committees in that sense. 4)In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possibl
21、e in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5)The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment decl
22、ared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of this technical report may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical com
23、mittees is to prepare International Standards. However, a technical committee may propose the publication of a technical report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. Technical reports do not
24、necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful by the maintenance team. IEC 62064, which is a technical report, has been prepared by subcommittee 46A: Coaxial cables, of IEC technical committee 46: Cables, wires, waveguides, R.F. connectors
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