IEC IEC61746-1 Edition 1.02009-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Calibration of optical time-domain reflectometers(OTDR) Part 1:OTDR for single mode fibres Etalonnage des reflectometres optiques dans le domaine temporel (OTDR)- Partie 1:OTDR pour fibres unimodales IE061 746- 12009 12(en (F- 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 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,please contact the address below or ni utlisee sous quelque forme que ce soit et par aucun procede,électronique ou mécanique,y compris la photocopie et les microfilms,sans laccord écrit de IEC ou du Comite national de IEC du pays du demandeur.Si vous avez des questions sur le copyright de llEC ou si vous desirez obtenir des droits supplementaires sur cette publication,utilisez les coordonnées ci-apres ou contactez le Comité national de I'lEC de votre pays de residence IEC Central Office Tel.:+41229190211 3,rue de Varembe Fax:+41229190300 CH-1211 Geneva 20 info @iec.ch Switzerland www.iec.ch Aboutthe IEC 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. Electropedia -www.electropedia.org IEC Catalogue-webstore.iec.ch/catalogue consulting The world's leading online dictionary The stand-alone application for the entire of electronic and EC Standards, electrical terms containing more than 300oo terms and bibliographical information on International definitions in English and French,with equivalent terms in 14 Technical Specifications,Technical Reports and other additional languages.Also known the International documents.Available for PC,Mac OS,Android Tablets and Electrotechnical Vocabulary (IEV)online. iPad. IECpublications search-www.iec.ch/searchpub IEC Glossary- std.iec.ch/glossary The advanced search enables to find IEC publications by a Morethan 55000electrotechnical terminologyentries in variety (reference number,text,technical English and French extracted from the Tems and Definitions committee..).It also gives information on projects,replaced clause of IEC publications i issued since 2002.Some entries and withdrawn publications. IEC Just Published -webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published IEC Customer Service Centre-webstore.iec.ch/csc details all new publications released.Available online and If you wish to give us your feedback on this publication or also once a month by email. need further assistance,please contact the Customer Service Centre: [email protected]. A propos de I'IEC A propos des publications IEc Le contenu technique des publications IEC est constamment revu.Veuillez vous assurer que vous possedez ledition la plus récente,un corrigendum ou amendement peut avoir éte publie. Catalogue lEC-webstore.iec.ch/catalogue Electropedia - www.electropedia.org Application autonome pour consultertous les renseignements Le premier dictionnaire en ligne de termes electroniques et bibliographiques sur les Normes internationales, électriques.ll contient plus de 30000 termes et definitions en Spécifications techniques,Rapportstechniques etautres anglais et en francais,ainsi que les termes équivalents dans documentsde 'EC.Disponiblepour PC,MacOS,tablettes 14 langues additionnelles.Egalement appele Vocabulaire Android et iPad. Electrotechnique Intemational (IEV)en ligne. Recherchedepublications IEC-www.iec.ch/searchpub Glossaire IEC-std.iec.ch/glossary L