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1、a Date: 18 September 2008 Origin: European Latest date for receipt of comments: 31 December 2008 Project no.: 2007/03228 Responsible committee: GEL/86/1 Optical fibres and cables Interested committees: Title: Draft BS EN 60793-2-40 Optical fibres - Part 40: Product specifications - Sectional specifi
2、cation for category A 4 multimode fibres Supersession information: If this document is published as a standard, the UK implementation of it will supersede BSEN60793-2-40 : 2006 and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secr
3、etary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 31 December 2008. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowl
4、edgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. El
5、ectronic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email . British, International and foreign standards are also available from BSI Customer
6、 Services. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via t
7、he British Standards Online Service on the BSI web site http:/. Direct tel: 020 8996 7009 Responsible Committee Secretary: Committee Service Centre (BSI) E-mail: Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 V
8、ersion 8.0 DPC: 08/30174652 DC Licensed CopyChinese University of Hong Kong, 21/10/2008 08:53, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on European discussions in which the UK took an active part. Your comments on this draft are welcome and will assist in the preparatio
9、n of the consequent British Standard. If no comments are received to the contrary, then the UK will approve this draft and implement it as a British Standard. Comment is particularly welcome on national legislative or similar deviations that may be necessary. Even if this draft standard is not appro
10、ved by the UK, if it receives the necessary support in Europe, the UK will be obliged to publish the official English Language text unchanged as a British Standard and to withdraw any conflicting standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or
11、 positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically,
12、 to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adh
13、ere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/ Template for comments and secretariat o
14、bservations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submi
15、tted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete ref
16、erence to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed CopyChinese University of Hong Kong, 21/10/2008 08:53, Uncontrolled Copy, (c) BSI FORM CDV (IEC) 2005-09-23 86A/1237/CDV COMMITTEE DRAFT FOR VOTE (CDV) PROJET DE COM
17、IT POUR VOTE (CDV) Project number IEC 60793-2-40 Ed. 3.0 Numro de projet IEC/TC or SC: SC86A CEI/CE ou SC: Secretariat / Secrtariat France Submitted for parallel voting in CENELEC Soumis au vote parallle au CENELEC Date of circulation Date de diffusion 2008-09-12 Closing date for voting (Voting mand
18、atory for P-members) Date de clture du vote (Vote obligatoire pour les membres (P) 2009-02-13 Also of interest to the following committees Intresse galement les comits suivants ISO/IEC JTC1 SC25, IEC SC65C, IEC TC100, ITU SG6 Supersedes document Remplace le document 86A/1195/CD and 86/1211A/CC Propo
19、sed horizontal standard Norme horizontale suggre Other TC/SCs are requested to indicate their interest, if any, in this CDV to the TC/SC secretary Les autres CE/SC sont requis dindiquer leur intrt, si ncessaire, dans ce CDV lintention du secrtaire du CE/SC Functions concerned Fonctions concernes Saf
20、ety Scurit EMC CEM Environment Environnement Quality assurance Assurance qualit CE DOCUMENT EST TOUJOURS LTUDE ET SUSCEPTIBLE DE MODIFICATION. IL NE PEUT SERVIR DE RFRENCE. LES RCIPIENDAIRES DU PRSENT DOCUMENT SONT INVITS PRSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES DROITS DE PROPRIT DONT
21、ILS AURAIENT VENTUELLEMENT CONNAISSANCE ET FOURNIR UNE DOCUMENTATION EXPLICATIVE. THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS
22、 OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Titre : Title : IEC 60793-2-40 Ed 3.0: Optical fibres Part 40: Product specifications Sectional specification for category A4 multimode fibres Note dintroduction La version franaise sera diffuse ultrieurement Introductory note French
23、version will be circulated later ATTENTION VOTE PARALLLE CEI CENELEC Lattention des Comits nationaux de la CEI, membres du CENELEC, est attire sur le fait que ce projet de comit pour vote (CDV) de Norme internationale est soumis au vote parallle. Les membres du CENELEC sont invits voter via le systm
24、e de vote en ligne du CENELEC. ATTENTION IEC CENELEC PARALLEL VOTING The attention of IEC National Committees, members of CENELEC, is drawn to the fact that this Committee Draft for Vote (CDV) for an International Standard is submitted for parallel voting. The CENELEC members are invited to vote thr
25、ough the CENELEC online voting system. Copyright 2008 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or
26、 “mirror“ the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC. Licensed CopyChinese University of Hong Kong, 21/10/2008 08:53, Uncontrolled Copy, (c) BSI 60793-2-40 Ed. 3/CDV IEC FORM CDV (IEC) 2005-09-23 2 CONTENTS Page 1 Scop
27、e and object .6 2 Normative references .7 3 Specifications.7 3.1 Dimensional requirements7 3.2 Mechanical requirements .9 3.3 Transmission requirements 11 3.4 Environmental requirements.11 Annex A (normative) Family specifications for A4a multimode fibres14 A.1 General.14 A.2 Dimensional requirement
28、s14 A.3 Mechanical requirements .14 A.4 Transmission requirements 14 A.5 Environmental requirements.15 Annex B (normative) Family specifications for A4b multimode fibres 16 B.1 General.16 B.2 Dimensional requirements16 B.3 Mechanical requirements .16 B.4 Transmission requirements 16 B.5 Environmenta
29、l requirements.17 Annex C (normative) Family specifications for A4c multimode fibres 18 C.1 General.18 C.2 Dimensional requirements18 C.3 Mechanical requirements .18 C.4 Transmission requirements 18 C.5 Environmental requirements.19 Annex D (normative) Family specifications for A4d multimode fibres
30、20 D.1 General.20 D.2 Dimensional requirements20 D.3 Mechanical requirements .20 D.4 Transmission requirements 20 D.5 Environmental requirements.21 Annex E (normative) Family specifications for A4e multimode fibres 22 E.1 General.22 E.2 Dimensional requirements22 E.3 Mechanical requirements .22 E.4
31、Transmission requirements 22 E.5 Environmental requirements.23 Annex F (normative) Family specifications for A4f multimode fibres24 F.1 General.24 F.2 Dimensional requirements24 F.3 Mechanical requirements .24 F.4 Transmission requirements 24 F.5 Environmental requirements.25 Annex G (normative) Fam
32、ily specifications for A4g multimode fibres 26 G.1 General.26 Licensed CopyChinese University of Hong Kong, 21/10/2008 08:53, Uncontrolled Copy, (c) BSI 60793-2-40 Ed. 3/CDV IEC FORM CDV (IEC) 2005-09-23 3 G.2 Dimensional requirements26 G.3 Mechanical requirements .26 G.4 Transmission requirements 2
33、6 G.5 Environmental requirements.27 Annex H (normative) Family specifications for A4h multimode fibres 28 H.1 General.28 H.2 Dimensional requirements28 H.3 Mechanical requirements .28 H.4 Transmission requirements 28 H.5 Environmental requirements.29 Annex I (normative) Mode Scramblers for A4a to A4
34、d Fibres (based on IEC 794-1-1, 1999) 30 I.1 General.30 Annex J (informative) Additional transmission requirements for A4a multimode fibres for wavelengths below 650 nm .31 J.1 General.31 This annex contains additional transmission requirements according to Annex A applicable to A4a fibres, which ar
35、e intended to use with wavelengths below 650 nm. PMMA based fibres have the lowest attenuation at wavelengths around 520 nm and 560 nm. The market availability of powerful transceivers based on GaN-LEDs make it more and more attractive to use the optical window around 520 nm for the design of improv
36、ed transmission systems. The following requirements should be fulfilled in order to support the design and use of such systems .31 J.2 Transmission requirements 31 Licensed CopyChinese University of Hong Kong, 21/10/2008 08:53, Uncontrolled Copy, (c) BSI 60793-2-40 Ed. 3/CDV IEC FORM CDV (IEC) 2005-
37、09-23 4 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRES Part 40: Product specifications Sectional specification for category A4 multimode fibres FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrot
38、echnical 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 Specificati
39、ons, 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 interested in the subject dealt with may participate in this preparatory work. International,
40、 governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decis
41、ions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for intern
42、ational use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In ord
43、er to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be cle
44、arly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability sha
45、ll attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including leg
46、al fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this pub
47、lication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. I International Standard IEC 60793-2-40 has been prepared by subcommittee 86A: Fi
48、bres and cables, of IEC technical committee 86: Fibre optics. This third edition cancels and replaces the second edition published in 2006 and constitutes a technical revision, of edition 2 which defines a enhanced A4a fibre named A4a.2 while the existing A4a fibre has been renamed A4a.1. The text o
49、f this standard is based on the following documents: FDIS Report on voting XX/XX/FDIS XX/XX/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. Annexes A, B, C, D, E, F, G and H form an integral part