IEC_61935-1-2009.pdf

IEC 61935-1Edition 3.0 2009-07INTERNATIONAL STANDARD Specification for the testing of balanced and coaxial information technology cabling Part 1:Installed balanced cabling as specified in ISO/IEC 11801 and related standards IEC 61935-1:2009(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs 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,please contact the address below or your local IEC member National Committee for further information.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications 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to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month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.?Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 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 If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 61935-1Edition 3.0 2009-07INTERNATIONAL STANDARD Specification for the testing of balanced and coaxial information technology cabling Part 1:Installed balanced cabling as specified in ISO/IEC 11801 and related standards INTERNATIONAL ELECTROTECHNICAL COMMISSION XEICS 33.120.10 PRICE CODEISBN 2-8318-1051-8 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61935-1 IEC:2009(E)CONTENTS FOREWORD.8 INTRODUCTION.10 1 Scope.11 2 Normative references.12 3 Terms and definitions.13 4 Reference measurement procedures for electrical properties.15 4.1 General.15 4.2 Test equipment considerations.15 4.2.1 General.15 4.2.2 Network analyzer test requirements.15 4.2.3 Termination of conductor pairs.16 4.2.4 Reference loads for calibration.17 4.2.5 Test configurations.17 4.2.6 Coaxial cables and test leads for network analyzers.18 4.2.7 Balun requirements.19 4.2.8 Network analyzer measurement precautions.20 4.2.9 Data reporting and accuracy.21 4.3 DC loop resistance.21 4.3.1 Objective.21 4.3.2 Test method.22 4.3.3 Test equipment and set-up.22 4.3.4 Procedure.22 4.3.5 Test report.22 4.3.6 Uncertainty.23 4.4 Direct current(d.c.)resistance unbalance.23 4.4.1 Objective.23 4.4.2 Test method.23 4.4.3 Test equipment and set-up.23 4.4.4 Procedure.23 4.4.5 Test report.24 4.4.6 Uncertainty.24 4.5 Insertion loss.24 4.5.1 Objective.24 4.5.2 Test method.24 4.5.3 Test equipment and set-up.25 4.5.4 Procedure.25 4.5.5 Test report.26 4.5.6 Temperature correction.26 4.5.7 Uncertainty.26 4.6 Propagation delay and delay skew.26 4.6.1 Objective.26 4.6.2 Test method.26 4.6.3 Test equipment and set-up.27 4.6.4 Procedure.27 4.6.5 Test report.27 4.6.6 Uncertainty.27 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61935-1 IEC:2009(E)3 4.7 Near-end cross-talk(NEXT)and power sum NEXT.28 4.7.1 Objective.28 4.7.2 Test method.28 4.7.3 Test equipment and set-up.28 4.7.4 Procedure.28 4.7.5 Test report.29 4.7.6 Uncertainty.30 4.8 Attenuation to crosstalk ratio,near end(ACR-N)and power sum ACR-N.30 4.8.1 Objective.30 4.8.2 Test method.30 4.8.3 Test equipment and set-up.30 4.8.4 Procedure.30 4.8.5 Test report.30 4.8.6 Uncertainty.30 4.9 Far-end cross-talk(FEXT)and power sum FEXT.31 4.9.1 Objective.31 4.9.2 Test method.31 4.9.3 Test