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
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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