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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-611:2001 Elements of electrical and optical connection Test methods Part 611: Optical elements Effectiveness of cable attachment Cable torsion The European Standard EN 2591-611:2001 has the status of a British Standard ICS 49.060 NO COPYING WITHOUT BSI PE
2、RMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 18:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2591-611:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was pu
3、blished under the authority of the Standards Policy and Strategy Committee on 14 December 2001 BSI 14 December 2001 ISBN 0 580 38073 4 National foreword This British Standard is the official English language version of EN 2591-611:2001. The UK participation in its preparation was entrusted to Techni
4、cal Committee ACE/6, Aerospace Avionic Electrical and Fibre Optic Technology, to Subcommittee ACE/6/10, Aerospace - Fibre Optic Systems and Equipment, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-referenc
5、es The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogu
6、e. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text;
7、present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside fro
8、nt cover, the EN title page, pages 2 to 5 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 18:06:16 GMT+00:00 2006, Uncontr
9、olled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-611 November 2001 ICS 49.060 English version Aerospace series - Elements of electrical and optical connection - Test methods - Part 611: Optical elements - Effectiveness of cable attachment - Cable torsion Srie arospatiale
10、 - Organes de connexion lectrique et optique - Mthodes dessais - Partie 611: Organes optiques - Efficacit de lattache du cble - Torsion du cble Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prfverfahren - Teil 611: Optische Elemente - Wirksamkeit der Leitungsbefestigung - Verd
11、rehung This European Standard was approved by CEN on 4 June 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical
12、references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. 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 CEN member
13、 into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
14、 Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN natio
15、nal Members. Ref. No. EN 2591-611:2001 E Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 18:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2591-611:2001 (E) 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries
16、 and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national s
17、tandard, either by publication of an identical text or by endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn at the latest by May 2002. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bo
18、und to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 18:06:16
19、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2591-611:2001 (E) 3 1Scope This standard specifies a method of checking the effectiveness of cable attachment in the torsion mode for optical connection elements (including permanent connections) and fibre optic couplers. It shall be used together with
20、EN 2591-100. 2Normative references 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 publications are listed hereafter. For dated references, subsequent amendments t
21、o 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. EN 2591-100Aerospace series Elements of electrical and optical connection Test methods
22、Part 100: General 1) EN 2591-601Aerospace series Elements of electrical and optical connection Test methods Part 601: Optical elements Insertion loss EN 2591-602Aerospace series Elements of electrical and optical connection Test methods Part 602: Optical elements Variation of attenuation and optical
23、 discontinuity EN 2591-6101Aerospace series Elements of electrical and optical connection Test methods Part 6101: Optical elements Visual examination 3Preparation of specimens 3.1Specimens shall be fitted with normal accessories and terminated in accordance with the product standard. All cavities sh
24、all be fitted with their terminated contacts. If not yet at standard test conditions, the specimens shall be subjected to standard test conditions and stabilized at these conditions for 24 h as defined in EN 2591-100. 3.2Unless otherwise indicated in the technical specification, the following detail
25、s shall be specified: type and length of cable/fibre; number of cycles if not 100; load to be applied; number of contacts to be installed in optical connection element; maximum permissible variation of attenuation; maximum value of insertion loss. 4Apparatus See EN 2591-602 plus: a test set-up capab
26、le of applying the torsional loads required by the test specification. A typical arrangement is shown in figure 1. ? 1) Published as AECMA Prestandard at the date of publication of this standard Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 18:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BS
27、I EN 2591-611:2001 (E) 4 Key 1Rotation of cable 2L ? free length of cable 3Specimen 4Rotating clamp for cable 5Fixed mated male and female connectors 6Moveable support 7Load Figure 1 5Method The torsion test shall be carried out on the cable or cable bundle on a free connector (see figure 1). 5.1Pro
28、cedure The variation of attenuation (EN 2591-602 Method A) shall be monitored throughout the test. Unless otherwise stated in the product standard, the following test shall apply: the cable or cable bundle shall be rotated first at 90 in one direction then at 180 in the opposite direction. It shall
29、then be returned to the starting position (90). This defines one cycle; the number of cycles shall be 100; the cyclic rate shall be 25 cycles/min to 35 cycles/min. Dimension L shall be 15 times the cable or cable bundle diameter, but not greater than 100 mm. Licensed Copy: sheffieldun sheffieldun, n
30、a, Thu Nov 02 18:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2591-611:2001 (E) 5 5.2Number of contacts to be measured See table 1. Table 1 N number of contacts of the same size in the optical connection element Minimum percentage to be measured: % N ? 5100 5 ? N ? 6050 5.3Final measurement a
31、nd requirements EN 2591-6101 Visual examination EN 2591-601 Insertion loss Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 02 18:06:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2591-611:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent
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