IEC IEC62153-4-11 Edition 1.0 2009-08 INTERNATIONAL STANDARD colour inside Metalliccommunicationcabletestmethods Part 4-11:Electromagnetic compatibility (EMC)-Couplingattenuation or screening attenuation of patch cords, coaxial cable assemblies, pre-connectorized cables -Absorbing clamp method IEC 62153-4-11:2009(E) THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright2009IEC, Geneva, Switzerland or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, IEC Central Office 3, rue de Varembe CH-1211 Geneva 20 Switzerland Email: [email protected] Web: www.iec.ch About the IEC International Standards for all electrical, electronic and related technologies. AboutIECpublications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. Catalogue of IEC publications: www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical commttee,.). It also gives information on projects, withdrawn and replaced publications. IEC Just Published: www.iec.ch/online_news/justpub Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available on-line and also by email. T Electropedia: www.electropedia.org The world's leading online dictionary of electronic and electrical terms containing more than 20 o00 terms and definitions in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary online Customer Service Centre: www.iec.ch/webstore/custserv Centre FAQ or contact us: Email: [email protected] Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC IEC62153-4-11 Edition 1.0 2009-08 INTERNATIONAL STANDARD colour inside MUSENT THIS LOCANONG Metalliccommunicationcabletestmethods- Part 4-11: Electromagnetic compatibility (EMC)- Coupling attenuation or screening attenuation of patch cords,coaxial cable assemblies, pre-connectorized cables-Absorbing clamp method INTERNATIONAL ELECTROTECHNICAL COMMISSION N PRICE CODE ICS 33.100; 33.120.10 ISBN 2-8318-1055-9 ? Register -2- 62153-4-11 IEC:2009(E) CONTENTS FOREWORD.. Scope 2 Normative references .5 3 Terms and definitions Test method 4.1 Equipment 5 4.1.1 General. 4.1.2 Balun requirements ... 4.1.3 Test head and extension cable requirements.... 4.1.4 Impedance matching.... 8 4.2 Test sample.... 4.2.1 Length of the patch cords under test . 8 4.2.2 Length of extension cables connected to patch cord under test . 4.2.3 4.2.4 Preparationofextensioncableandtesthead 4.3 Calibration procedure 4.4 Test set-up 4.4.1 General 4.4.2 Test set-up verification. 11 4.5 Measuring procedure 5 Expression of test results 12 Test report. 12 6 6.1 General 6.2 Evaluation of test results... Figure 1 - Measurement of surface wave at near end of patch cord . ..6 Figure 2 - Termination of extension cables... ..9 Figure 3 - Test set-up for a near end measurement of a double-ended patch cord .... Figure 4 - Test set-up for a near end measurement of a single-ended patch cord .... Figure 5 - Test set-up for a near end measurement of a double-ended patch cord .... 11 Figure 6 - Validation test set-up .. 12 Figure 7- Typical measurement of an unscreened balanced patch cord 14 Figure 8-Typical measurement of a screened balanced patch cord. 14 Table 1-Balun performance characteristics (30 MHz to 1 GHz) -3- 62153-4-11*IEC:2009(E) INTERNATIONALELECTROTECHNICALCOMMISSION METALLIC COMMUNICATIONCABLETESTMETHODS- Part4-11:Electromagneticcompatibility(EMC)- coaxial cable assemblies,pre-connectorized cables- Absorbing clamp method FOREWORD all national electrotechnical committees (IEC National Committ