1、 IEC 60794-3-21 Edition 2.0 2015-11 INTER NA TIONA L STA NDA R D Optical fibre cables Part 3-21:Outdoor cables Product specification for optical self-supporting aerial telecommunication cables for use in premises cabling IEC 60794-3-21:2015-11(en)c olourinsideInternational Electrotechnical Commissio
2、n THIS PUBLICATION IS COPYRIGHT PROTECTED Copyr ight 2015 IEC,Geneva,Switzer land All r ights r eserved.Unless otherwise specif ied,no par t of this publication may be reproduced or utilized in any f orm or by any means,electr onic or mechanical,including photocopying and microfilm,without permissio
3、n in writing f rom 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 f or fur
4、 ther information.IEC Central Office Tel.:+41 22 919 02 11 3,r ue de Varemb Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzer land www.iec.ch About the IEC The Inter national Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standar
5、ds f or all electr ical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sur e that you have the latest edition,a corrigenda or an amendment might have been published.IEC Catalogue-webstore.iec.c
6、h/cat alogue The stand-alone application for consulting the entir e bibliographical information on IEC International Standards,Technical Specifications,Technical Reports and other documents.Available for PC,Mac OS,Android Tablets and iPad.IEC publicat ions search-w w w.iec.ch/sear chpub The advanced
7、 search enables to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdraw n publications.IEC Just Published-webstore.iec.ch/just published Stay up to date on all new IEC publications.Just Published detail
8、s all new publications released.Available online and also once a month by email.Electropedia-www.electropedia.org The worlds leading online dictionar y of electronic and electrical terms containing more than 30 000 terms and definitions in English and French,with equivalent terms in 15 additional la
9、nguages.A lso k now n as the International Electrotechnical V ocabular y (IEV)online.IEC Glossar y -st d.iec.ch/glossar y More than 60 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries hav
10、e been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC Cust omer Ser v ice Centre-webst ore.iec.ch/csc If you wish to give us y our feedback on this publication or need fur ther assistance,please contact the Customer Service Centre:csciec.ch.International Electrotechnical Commis
11、sion IEC 60794-3-21 Edition 2.0 2015-11 INTER NA TIONA L STA NDA R D Optical fibre cables Part 3-21:Outdoor cables Product specification for optical self-supporting aerial telecommunication cables for use in premises cabling INTER NATIONA L ELECTROTECHNICA L COMMISSION ICS 33.180.10 ISBN 978-2-8322-
12、3001-5 Registered t rademark of t he Int ernational Electrot echnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.c olourinsideInternational Electrotechnical Commission 2 IEC 60794-3-21:2015 IEC 2015 CONTENTS FOREWORD.3 1 Scope.5 2 Normative ref ere
13、nces.5 3 General requirements.5 4 Particular requirements.6 4.1 General.6 4.2 Environmental requirements Temperature cycling.6 4.3 Transmission requirements.6 4.3.1 Attenuation of cabled f ibre.6 4.3.2 Fibre bandwidth requirements.7 4.3.3 Polarization mode dispersion(PMD)requirements.7 Table 1 Multi
14、mode maximum cable attenuation coef f icient(dB/km).6 Table 2 Single-mode maximum cable attenuation coef f icient(dB/km).7 Table 3 Minimum multimode f ibre bandwidth(MHzkm).7 International Electrotechnical Commission IEC 60794-3-21:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ _ _ _ _
15、OPTICAL FIBRE CABLES Part 3-21:Outdoor cables Product specification f or optical self-supporting aerial telecommunication cables f or use in premises cabling FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrote
16、chnical committees(IEC National Committees).The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other activities,IEC publishes International Standards,Technical Specifications,Technical Reports,Publicly Available Specifications(PAS)and Guides(hereafter referred to as“IEC Publication(s)”).Their preparation is entrusted to technical committees;any IEC National Committee interes
