1、STD-BSI BS EN bL3-2-27-ENGL 1997 Lb2LIbb7 Ob48205 77T D BRITISH STANDARD Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2.29. Tests - Low air pressure The European Standard EN 61300-2-29 : 1997 has the status of a British Standard ICs 33.180.2
2、0 NO COPYING WTHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW i-7 BS EN 1997 1995 61300-2-29 : IEC 61300-2-29 : BS EN 61300-2-29 : 1997 This British Standard, having been prepared under the direction of the Electrotechnicai Sector Board, was published under the authority of the Standards B
3、oard and comes into effect on 15 October 1997 National foreword This British Standard is the English language version of EN 61300-2-29 : 1997. It is identical with IEC 61300-2-29 : 1995. The UK participation in its preparation was entrusted by Technical Committee EPIB6, Fibre optics, to Subcommittee
4、 EPL/86/2, Interconnecting devices and passive components, which has the responsibility to. - aid enquiren to understand the text; - present to the responsible internationalEuropean committee any enquiries on the interpretation, or proposals for change, and keep the TJK interests informed; - monitor
5、 related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtajned on request to its secretary. Rom 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, EC 27-1 has been
6、 renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identien from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists nonnative referenc
7、es to intemational publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled International Standasds Correspondence Index, or by using the Find
8、 facility of the BSI standardc Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5, a blank page, an inside back cover and a
9、back cover. Amendments issued since publication I Text affected AmdNo. Date O BSI 1997 ISBN O 580 28578 2 STD.BS1 BS EN bL300-2-29-ENGL L777 Lb24bb9 b48207 5b2 m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 6 I 300-2-29 August 1997 ICC 33.1 80.20 English version Fibre opt,G interconnecting d
10、evices anLi passive components Basic test and measurement procedures Part 2-29: Tests - Low air pressure (IEC 61 300-2-29:i 995) Dispositifs dinterconnexion et composants passifs fibres optiques Mthodes fondamentales dessais et de mesures Partie 2-29: Essais - Basse pression Lichtweiienieiter - Verb
11、indungseiemente und passive Bauteile - Grundlegende Prf- und Meverfahren Teil 2-29: Prfungen: Niedriger Luftdruck atmosphrique (IEC 61 300-2-29:1995) (CE1 61 300-2-29: 1 995) This European Standard was approved by CENELEC on 1997-07-01. CENELEC members are bound to comply with the CENICENELFC Intern
12、al Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographiical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC me
13、mber. This 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. CENEL
14、EC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnicai Standardization C
15、omit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 1997 CENELEC - Ali rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61300-2-29:1997 E I ST
16、D-BSI BS EN bL300-2-27-ENGL 1997 Lb24bb9 Ob48208 4T9 S Page 2 EN 61300-2-29 : 1997 Foreword The text of the International Standard IEC 61 300-2-29:1995, prepared by SC 868, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the formal vote and wa
17、s approved by CENELEC as EN 61 300-2-29 on 1997-07-01 without any modification. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1998-06-0 1 - latest date by which the nation
18、al standards conflicting with the EN have to be withdrawn (daw) 1998-06-01 Annexes designated “normative“ are part of the body of the standard. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 61 300-2-29: 1995
19、 was approved by CENELEC as a European Standard without any modification. STD-BSI BS EN bL300-2-27-ENGL 1997 SB Lb24bb9 b48207 335 Page 3 EN 61300-2-29 : 1997 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS - BASIC TEST AND MEASUREMENT PROCEDURES - Part 2-29: lests - Low air pressure 1 Ge
20、neral 1.1 Scope and object The purpose of this part of IEC 1300 is to determine the effect on a fibre optic device of reduced air pressure, such as might be encountered at high altitudes. 1.2 General description This procedure is conducted in accordance with IEC 68-2-13, test M. The specimen is intr
21、oduced into the chamber at standard atmosphere and temperature conditions. The pressure within the chamber is then reduced to the specified value and maintained for the required duration, after which the ait pressure will be returned to normal. 1.3 Normative reference The following normative documen
22、t contains provisions which, through reference in this text, constitute provisions of this part of IEC 1300. At the time of publication, the edition indicated was valid. All normative documents are subject to revision, and parties to agreements based on this pari of IEC 1300 are encouraged to invest
23、igate the possibility of applying the most recent edition of the normative document indicated below. Members of IEC and IS0 maintain registers - _. - * * of currently valid International Standards. zo IEC 68-2-1 3: i 983, Environmental testing - Part 2: Tests - Test M: tow air pressure 2 Apparatus T
24、he apparatus consists of an environmental chamber in accordance with IEC 68-2-13, test M. 3 Procedure Conduct the test in accordance with IEC 68-2-13, test M. 4 Severity The severity consists of the combination of the air pressure and duration. The severity shall be specified in the detail specifica
25、tion. Durah 30 min 16h 5 Details to be specified The following details, as applicable, shall be specified in the detail specification: Air pressure kPa 1 25 2 40 4 55 8 70 15 e4 Air pressure Duration Specimen optically functioning or non-functioning Specimen mated or unmated Pre-conditioning procedu
26、re Recovery procedure Initial examinations and measurements and performance requirements Examinations and measurements during test and performance requirements Final examinations and measurements and performance requirements Deviations from test procedure Additional passflail criteria Annex ZA (norm
27、ative) Normative references to international publications with their corresponding European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publicati
28、ons are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendm
29、ents). NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant ENRID applies. Publicatipn mfm IEC 60068-2-1 3 1983 Basic environmental testing procedures HO 323.2.1 3 S1 1987 Patt 2: Tests - Test M: Low air pressure STD-BSI BS EN bL300-2-29-
30、ENGL 1997 H Lb24bb9 Ob48232 72T IB BS EN 61300-2-29 : I 1997 IEC 61300-2-29 : I BSI - British Standards Institution 1995 I SI is the independent national body responsible for preparing British Standards. It resents the UK view on standards in Europe and at the international level. It is icorporated
31、by Royal Charter. :ontract requirements . British Standard does not purport to include all the necessary provisions of a ontract. Users of British Standards are responsible for their correct application. levisions iritish Standards are updated by amendment or revision. Users of British Standards hou
32、ld make sure that they possess the latest amenments or editions. ; is the constant aim of BSI to improve the quality of our products and services. We Jould be grateful if anyone finding an inaccuracy or ambiguity while using this iritish Standard would inform the Secretary of the responsible technic
33、al committee, he identity of which can be found on the inside front cover. Tel O181 996 9000; Fax: 1181 996 7400. SI offers members an individual updating service called PLUS which ensures that ubscribers automatically receive the latest editions of standards. guying standards Irdeis for all BSI, in
34、ternational and foreign standards publications should be ddressed to Customer Services, Sales Department at Chiswick Tel O181 996 7000; pax: O181 996 7001. n response to orders for international standards, it is BSI poky to supply the BSI mplementation of those that have been published as British St
35、andards, unless )therwise requested. dormation on standards 3SI provides a wide range of information on national, European and international ;tandards through its Library, the Standardline Database, the BSI Information rechnology Service (BITS) and its Technical Help to Exporters Service. Contact th
36、e nformation Department at Chiswick Tel O181 996 7111; Fax: O181 996 7048. Subscribing members of BSI are kept up to date with standards developments and *eceive substantial discounts on the purchase price of standards. For details of hese and other benefits contact Customer Services, Membership at
37、Chiswick Fel 0181 996 7002; Fax: 0181 996 7001. Copyright Zopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be repr
38、oduced, stored in a retrieval system or transmitted in any form or by any means - electronic, photocopying, recording or otherwise - without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and s
39、ize, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager, BSI, 389 Chiswick High Road, London W4 4AL. BSI 389 Chiswick High Road London w4 4AL
