1、Elements of electrical and optical connection Test methods Part 61 1 : Optical elements - Effectiveness of cable attachment - Cable torsion The European Standard EN 2591-61 1:2001 has the status ofa British Standard ICs 49.060 BS EN 2591-61 112001 A present to the responsible European committee any
2、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. - A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cr oss-r e fer
3、enc e s 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 Cat
4、alogue. 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. Summary of pages This document co
5、mprises a front cover, an inside front 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. O BSI 14 December 2001 ISBN O 580 38073 4 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-61 1 Nove
6、mber 2001 ICs 49.060 English version Aerospace series - Elements of electrical and optical connection - Test methods - Part 61 1 : Optical elements - Effectiveness of cable attachment - Cable torsion Srie arospatiale - Organes de connexion lectrique et optique - Mthodes dessais - Partie 611: Organes
7、 optiques - Efficacit de lattache du cble - Torsion du cble Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prfverfahren - Teil 61 1: Optische Elemente - Wirksamkeit der Leitungsbefestigung - Verdrehung This European Standard was approved by CEN on 4 June 2001 CEN members are bo
8、und to comply with the CENKENELEC 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 references concerning such national standards may be obtained on application to the M
9、anagement 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 into its own language and notified to the Management Centre has the same status as t
10、he 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, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATIO
11、N EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2591-611:2001 E EN 2591-61 1 :2001 (E) Foreword This Euro
12、pean Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA) . After inquiries 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 countr
13、ies of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, 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
14、 to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spa
15、in, Sweden, Switzerland and the United Kingdom. 2 EN 2591-61 1 :2001 (E) 1 Scope 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 togethe
16、r with EN 2591-100. 2 Normative 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 amen
17、dments 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. EN 2591-100 EN 2591-601 EN 2591-602 EN 2591-6101 Aerospace series - Elements of
18、 electrical and optical connection - Test methods - Part 100: General 1) Aerospace series - Elements of electrical and optical connection - Test methods - Part 601 : Optical elements - Insertion loss Aerospace series - Elements of electrical and optical connection - Test methods - Part 602: Optical
19、elements -Variation of attenuation and optical discontinuity Aerospace series - Elements of electrical and optical connection - Test methods - Part 61 O1 : Optical elements -Visual examination 3 Preparation of specimens 3.1 Specimens shall be fitted with normal accessories and terminated in accordan
20、ce with the product standard. All cavities shall 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. 3.2 Unless otherwise indicated in the
21、 technical specification, the following details 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
22、loss. 4 Apparatus See EN 2591-602 plus: - a test set-up capable 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 3 EN 2591-61 1 :2001 (E) I 1 Key 1 Rotation of
23、 cable 2 3 Specimen 4 Rotating clamp for cable 5 6 Moveable support 7 Load i =free length of cable Fixed mated male and female connectors Figure 1 5 Method The torsion test shall be carried out on the cable or cable bundle on a free connector (see figure 1). 5.1 Procedure The variation of attenuatio
24、n (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 then be returned to the star
25、ting 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 i shall be 15 times the cable or cable bundle diameter, but not greater than 100 mm. 4 EN 2591-61 1 :2001 (E) N number of contacts of the same size i
26、n the optical connection element N5 5N60 5.2 Number of contacts to be measured Mi ni m um percentage to be measured: % 1 O0 50 5.3 Final measurement and requirements - EN 2591-6101 -Visual examination - EN 2591-601 - Insertion loss 5 BS EN 2591-61 112001 BSI 389 Chiswick High Road Lon don w4 4AL BSI
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