BS EN 61300-2-35:2014 BSI Standards Publication Fibre optic interconnecting devices and passive components — Basic test and measurement procedures Part 2-35: Tests — Cable nutation BRITISH STANDARD BS EN 61300-2-35:2014 National foreword This British Standard is the UK implementation of EN 61300-2-35:2014 It is identical to IEC 61300-2-35:2014 It supersedes BS EN 61300-2-35:1997 which is withdrawn The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconnecting devices and passive components 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 application © The British Standards Institution 2014 Published by BSI Standards Limited 2014 ISBN 978 580 75736 ICS 33.180.20 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2014 Amendments/corrigenda issued since publication Date Text affected BS EN 61300-2-35:2014 EUROPEAN STANDARD EN 61300-2-35 NORME EUROPÉENNE EUROPÄISCHE NORM July 2014 ICS 33.180.20 Supersedes EN 61300-2-35:1997 English Version Fibre optic interconnecting devices and passive components Basic test and measurement procedures - Part 2-35: Tests Cable nutation (IEC 61300-2-35:2014) Dispositifs d'interconnexion et composants passifs fibres optiques - Procédures fondamentales d'essais et de mesures - Partie 2-35: Essais - Nutation du câble (CEI 61300-2-35:2014) Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und Messverfahren - Teil 235: Prüfungen - Kabelnutation (IEC 61300-2-35:2014) This European Standard was approved by CENELEC on 2014-04-11 CENELEC 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 references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members Ref No EN 61300-2-35:2014 E BS EN 61300-2-35:2014 EN 61300-2-35:2014 -2- Foreword The text of document 86B/3703/FDIS, future edition of IEC 61300-2-35, prepared by SC 86B "Fibre optic interconnecting devices and passive components" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61300-2-35:2014 The following dates are fixed: – latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-01-11 – latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-04-11 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights This document supersedes EN 61300-2-35:1997 Endorsement notice The text of the International Standard IEC 61300-2-35:2014 was approved by CENELEC as a European Standard without any modification In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 61753-1 NOTE Harmonized as EN 61753-1 -3- BS EN 61300-2-35:2014 EN 61300-2-35:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies NOTE When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies NOTE Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu Publication IEC 61300-3-1 Year - IEC 61300-3-3 - IEC 61300-3-4 - Title Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-1: Examinations and measurements - Visual examination Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-3: Examinations and measurements - Active monitoring of changes in attenuation and return loss Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-4: Examinations and measurements Attenuation EN/HD EN 61300-3-1 Year - EN 61300-3-3 - EN 61300-3-4 - –2– BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 CONTENTS Scope Normative references Terms and definitions General description Apparatus 6 5.1 Design of the apparatus 5.2 Optical measurements Procedure 6.1 Preconditioning 6.2 Initial examinations and measurements 6.3 Conditioning 10 6.4 Recovery 10 6.5 Final examinations and measurements 10 Severity 10 Details to be specified 11 Annex A (informative) Example for a test set-up 12 Bibliography 13 Figure – Test apparatus with vertical rotating DUT Figure – Test apparatus with horizontal rotating DUT Figure – Test apparatus with rotating deflection unit Figure A.1 – Example for a test set-up 12 Table – Severities 10 BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 –5– FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS – BASIC TEST AND MEASUREMENT PROCEDURES – Part 2-35: Tests – Cable nutation Scope This part of IEC 61300 details procedures for determining the suitability of a fibre optic device to withstand nutation that may occur during operation, service, storage and/or transport The test is intended to indicate the performance of such devices when exposed to torsion and bending as a combined load Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-1: Examinations and measurements – Visual examination IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of changes in attenuation and return loss IEC 61300-3-4, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-4: Examinations and measurements – Attenuation Terms and definitions For the purposes of this document, the terms and definitions contained in the IEC 61300 series, some of which have been repeated here for convenience, and the following terms and definitions apply 3.1 deflection unit rotating element with a cable feed through, able to describe a circle without transmitting substantial torque to the cable 3.2 fixed clamping device clamping device which prevents the device under test (DUT) moving during the test 3.3 fixed plate plate with a cable feed through able to constrain any movement and twist of the cable in relation to the DUT –6– BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 3.4 weight element which applies the required tensile force to the cable end 3.5 nutation combined flexing-rotation movements with tensile force 3.6 pulley swivel pulley 3.7 rotating clamping device clamping device, able to describe a circle without transmitting axial rotation to the DUT General description The purpose of environmental testing is to demonstrate that the DUT, under defined environmental conditions, is able to survive without irreversible or reversible failures according to the requirements The specimen is placed on the apparatus and subjected to a flexing rotation which is maintained at a given temperature and relative humidity for a specified duration, as specified in the relevant specification 5.1 Apparatus Design of the apparatus The apparatus performs a flexing rotation, substantially without torque, of the cable adjacent to the DUT in a conical path, with the axis of the cone being parallel with the longitudinal axis of the specimen During the rotation a tensile force is applied to the cable Either the DUT or the deflection unit may rotate, depending on the design of the apparatus Examples of the test apparatus are given in Figure 1, Figure and Figure BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 –7– x DUT x a x b Deflection angle A x r Swivel pulley Weight Tensile force R IEC 0412/14 Figure – Test apparatus with vertical rotating DUT The test apparatus in Figure consists at least of the following elements: a) rotating clamping device; b) pulley; c) weight for the tensile force The size of the pulley should not create additional attenuation during the rotation of the connector The design and size of the pulley should not cause a change in the load at the connector The maximum radius of the pulley depending on the allowed variation of the cone angle should be calculated with the following equation: rmax = 18 L Aπ where L is conical path length; A is the deflection angle (°) ; ±10% allowable tolerance of conical path length was assumed –8– Rotating clamping device BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 DUT Deflection angle A Tensile force R Weight IEC 0413/14 Figure – Test apparatus with horizontal rotating DUT The test apparatus in Figure consists of at least the following elements: 1) rotating clamping device; 2) fixed plate; 3) weight for the tensile force The cable should be able to move freely and be driven to rotate such that its absolute orientation is maintained BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 –9– Fixed clamping device DUT Deflection angle A Deflection unit Weight Tensile force R IEC 0414/14 Figure – Test apparatus with rotating deflection unit The test apparatus in Figure consists of at least the following elements: i) fixed clamping device; ii) deflection unit; iii) weight for the tensile force The cable should be able to move freely and be driven to rotate such that its absolute orientation is maintained 5.2 Optical measurements Where active monitoring is specified, measuring equipment specified in IEC 61300-3-3 shall be connected to the specimen for monitoring optical performance during the test The optical source and detector used to measure changes in attenuation shall comply with those specified in IEC 61300-3-4 6.1 Procedure Preconditioning Maintain the specimen under standard atmospheric conditions (room temperature condition) for a minimum of h Clean the specimen according to the manufacturer’s instructions 6.2 Initial examinations and measurements Complete initial examinations and measurements as required by the relevant specification BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 – 10 – 6.3 Conditioning A tensile force is applied to the cable of the terminated assembly The mated connector assembly is held by the adaptor installed in the clamping device The force is applied at the deflection angle to the connector axis The test procedure consists of the following tasks and shall be performed in the following order: a) set up the apparatus to obtain the required deflection angle; b) fix the specimen to the clamping device; c) route the cable and apply the required tensile force to the cable end; d) run the required number of cycles of rotation (360°) at a rate of 10 cycles per minute 6.4 Recovery Allow the specimen to remain under standard atmospheric conditions for a period of 10 6.5 Final examinations and measurements On completion of the test, remove all fixtures Clean the mechanical and optical alignment parts of the specimen according to the manufacturer’s instructions Take final measurements as required by the relevant specification If specified, visually examine the specimen in accordance with IEC 61300-3-1 and take any measurements specified to ensure that there is no permanent damage Severity The severity consists of the combination of the number of cycles of rotation, the deflection angle and the tensile force applied to the cable The severity shall be specified in the relevant specification The severities according to Table may be used for the procedure Table – Severities Tensile force, R N Deflection angle A ° Rotation angle ° Number of cycles Category 10 45 360 100 I BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 – 11 – Details to be specified The following details, as applicable, shall be specified in the relevant specification: a) description of the DUT; b) cable type; c) tensile force; d) deflection angle; e) number of cycles; f) specific mounting structures; g) specimen optically functioning; h) initial examinations and measurements and performance requirements; i) examinations and measurements during test and performance requirements; j) final examinations and measurements and performance requirements; k) deviations from test procedure; l) additional pass/fail criteria – 12 – BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 Annex A (informative) Example for a test set-up An example of a real test set-up is shown in Figure A.1 IEC Figure A.1 – Example for a test set-up 0215/14 BS EN 61300-2-35:2014 IEC 61300-2-35:2014 © IEC 2014 – 13 – Bibliography IEC 61753-1, Fibre optic interconnecting devices and passive components performance standard – Part 1: General and guidance for performance standards _ This page deliberately left blank This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT 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