BS-EN-60793-2-50-2008.pdf
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1、Optical fibres Part 2-50: Product specifications Sectional specification for class B single-mode fibres BS EN 60793-2-50:2008 raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI British Standards Licensed CopyChinese University of Hong Kong, 11/04/2
2、009 07:53, Uncontrolled Copy, (c) BSI National foreword This British Standard is the UK implementation of EN 60793-2-50:2008. It is identical to IEC 60793-2-50:2008. It supersedes BS EN 60793-2-50:2004 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee G
3、EL/86, Fibre optics, to Subcommittee GEL/86/1, Optical fibres and cables. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct
4、application. Compliance with a British Standard cannot confer immunity from legal obligations. BSI 200 ISBN 978 0 580 57362 0 ICS 33.180.10 Amendments issued since publication Amd. No. Date Text affected BRITISH STANDARDBS EN 60793-2-50:2008 9 This British Standard was published under the authority
5、of the Standards Policy and Strategy Committee on 31 January 2009. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:53, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 60793-2-50 NORME EUROPENNE EUROPISCHE NORM November 2008 CENELEC European Committee for Electrotechnical Standardization
6、Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60793-2-50:2008 E ICS
7、 33.180.10 Supersedes EN 60793-2-50:2004 English version Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres (IEC 60793-2-50:2008) Fibres optiques - Partie 2-50: Spcifications de produits - Spcification intermdiaire pour les fibres unimodales d
8、e classe B (CEI 60793-2-50:2008) Lichtwellenleiter - Teil 2-50: Produktspezifikationen - Rahmenspezifikation fr Einmodenfasern der Kategorie B (IEC 60793-2-50:2008) This European Standard was approved by CENELEC on 2008-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulat
9、ions which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This
10、European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members
11、are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
12、Spain, Sweden, Switzerland and the United Kingdom. BS EN 60793-2-50:2008 Licensed CopyChinese University of Hong Kong, 11/04/2009 07:53, Uncontrolled Copy, (c) BSI EN 60793-2-50:2008 - 2 - Foreword The text of document 86A/1164/CDV, future edition 3 of IEC 60793-2-50, prepared by SC 86A, Fibres and
13、cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60793-2-50 on 2008-10-01. This European Standard supersedes EN 60793-2-50:2004 + corrigendum July 2004. Compared to EN 60793-2-50:2004, this EN 60793-2-50:2008 aligns the requirements
14、 with the relevant ITU-T Recommendations, including tightening the tolerances of many parameters; provides a means for defining the requirements of sub-categories; now includes two sub-categories for B1.2 fibres; now includes three sub-categories for B4 fibres; replaces the traditional method of spe
15、cifying chromatic dispersion coefficient by limiting curves vs. wavelength for two of the sub-categories for B4 fibres; adds a new category, B5, which corresponds to the fibres defined in ITU-T Recommendation G.656; adds a new category, B6, which corresponds to the fibres defined in ITU-T Recommenda
16、tion G.657; adds an informative annex that maps the nomenclature of the IEC fibre specifications to that of the ITU-T fibre recommendations; adds a clause for definitions; adds a clause for abbreviations; removes the dates from the normative references. The following dates were fixed: latest date by
17、 which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-10-01 Annex ZA has been added by CENELEC. _ Endorsement notice
18、 The text of the International Standard IEC 60793-2-50:2008 was approved by CENELEC as a European Standard without any modification. _ BS EN 60793-2-50:2008 Licensed CopyChinese University of Hong Kong, 11/04/2009 07:53, Uncontrolled Copy, (c) BSI - 3 - EN 60793-2-50:2008 Annex ZA (normative) Normat
19、ive references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced do
20、cument (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60793-1-1 -1) Optical fibres - Part 1-1: Measurement methods and test procedures - Genera
21、l and guidance EN 60793-1-1 20082) IEC 60793-1-20 -1) Optical fibres - Part 1-20: Measurement methods and test procedures - Fibre geometry EN 60793-1-20 20022) IEC 60793-1-21 -1) Optical fibres - Part 1-21: Measurement methods and test procedures - Coating geometry EN 60793-1-21 20022) IEC 60793-1-2
22、2 -1) Optical fibres - Part 1-22: Measurement methods and test procedures - Length measurement EN 60793-1-22 20022) IEC 60793-1-30 -1) Optical fibres - Part 1-30: Measurement methods and test procedures - Fibre proof test EN 60793-1-30 20022) IEC 60793-1-31 -1) Optical fibres - Part 1-31: Measuremen
23、t methods and test procedures - Tensile strength EN 60793-1-31 20022) IEC 60793-1-32 (mod) -1) Optical fibres - Part 1-32: Measurement methods and test procedures - Coating strippability EN 60793-1-32 20032) IEC 60793-1-33 -1) Optical fibres - Part 1-33: Measurement methods and test procedures - Str
24、ess corrosion susceptibility EN 60793-1-33 20022) IEC 60793-1-34 -1) Optical fibres - Part 1-34: Measurement methods and test procedures - Fibre curl EN 60793-1-34 20062) IEC 60793-1-40 (mod) -1) Optical fibres - Part 1-40: Measurement methods and test procedures - Attenuation EN 60793-1-40 20032) I
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