IEC IEC60793-1-34 Edition3.02021-02 REDLINEVERSION INTERNATIONAL STANDARD colour inside Opticalfibres Part1-34:Measurementmethodsandtestprocedures-Fibrecurl THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright2021IEC,Geneva,Switzerland orbyanymeans,electronic ormechanical, including photocopying andmicrofilm,withoutpermission inwritingfrom eitherIECorIEC'smemberNational Committee in thecountryof the requester.If youhaveanyquestionsabout IE yourlocalIECmemberNational Committeeforfurtherinformation. IECCentralOffice Tel.:+41229190211 3,ruedeVarembe [email protected] CH-1211Geneva20 www.iec.ch Switzerland About theIEC The International Electrotechnical Commission(IEC)is the leadingglobal organizationthatprepares andpublishes InternationalStandardsforallelectrical,electronicandrelatedtechnologies. AboutIECpublications latestedition,acorrigendumoranamendmentmighthavebeenpublished. IECpublicationssearch-webstore.iec.ch/advsearchform IEC onlinecollection-oc.iec.ch The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the variety criteria (reference number, technical publicationspreviews. Witha subscriptionyouwill always of text, committee,...).Italsogives informationonprojects,replaced have access to up to date content tailored to your needs. and withdrawn publications. Electropedia-www.electropedia.org IECJust Published-webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology, Stayuptodateon all newIECpublications.JustPublished details all new publications released.Available online and and French,with equivalent terms in 18 additional languages. once a month by email. Alsoknown as the International Electrotechnical Vocabulary (IEV)online IECCustomer ServiceCentre-webstore.iec.ch/csc If youwishtogiveus yourfeedback on this publication or needfurtherassistance,please contact theCustomerService Centre:[email protected]. IEC IEC60793-1-34 Edition3.02021-02 REDLINEVERSION INTERNATIONAL STANDARD colour inside Opticalfibres- Part1-34:Measurementmethodsandtestprocedures-Fibrecurl INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.180.10 ISBN 978-2-8322-9430-7 Warning! Make sure that you obtained this publication from an authorized distributor. ? Registered trademark of the International Electrotechnical Commission