1、 IEC 60793-2-20 Edition 3.0 2015-11 INTER NA TIONA L STA NDA R D Optical fibres Part 2-20:Product specifications Sectional specification for categor y A 2 multimode fibres IEC 60793-2-20:2015-11(en)c olourinsideInternational Electrotechnical Commission THIS PUBLICATION IS COPYRIGHT PROTECTED Copyr i
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11、TIONA L STA NDA R D Optical fibres Part 2-20:Product specifications Sectional specification for category A 2 multimode fibres INTER NATIONA L ELECTROTECHNICA L COMMISSION ICS 33.180.10 ISBN 978-2-8322-3020-6 Registered t rademark of t he Int ernational Electrot echnical Commission Warning!Make sure
12、that you obtained this publication from an authorized distributor.c olourinsideInternational Electrotechnical Commission 2 IEC 60793-2-20:2015 IEC 2015 CONTENTS FOREWORD.4 1 Scope.6 2 Normative ref erences.6 3 Specif ications.7 3.1 General.7 3.2 Dimensional requirements.7 3.3 Mechanical requirements
13、.8 3.4 Transmission requirements.8 3.5 Environmental requirements.9 (normative)Specif ications f or sub-category A2a multimode f ibres.10 Annex AA.1 General.10 A.2 Dimensional requirements.10 A.3 Mechanical requirements.10 A.4 Transmission requirements.10 A.5 Environmental requirements.11 (normative
14、)Specif ications f or sub-category A2b multimode f ibres.12 Annex BB.1 General.12 B.2 Dimensional requirements.12 B.3 Mechanical requirements.12 B.4 Transmission requirements.12 B.5 Environmental requirements.13 (normative)Specif ications f or sub-category A2c multimode f ibres.14 Annex CC.1 General
15、.14 C.2 Dimensional requirements.14 C.3 Mechanical requirements.14 C.4 Transmission requirements.14 C.5 Environmental requirements.15 Bibliography.16 Table 1 Relevant dimensional attributes and measurement methods.7 Table 2 Dimensional requirements common to all category A2 f ibres.7 Table 3 Additio
16、nal dimensional attributes required f or each sub-category.8 Table 4 Relevant mechanical attributes and test methods.8 Table 5 Mechanical requirements common to all category A2 f ibres.8 Table 6 Relevant transmission attributes and measurement methods.8 Table 7 Requirements common to all category A2 f ibres.9 Table 8 Relevant environmental attributes and test methods.9 Table A.1 Dimensional requirements specif ic to A2a f ibres.10 Table A.2 Mechanical requirements specif ic to A2a f ibres.10 Tab