Bsi bs en 61753 051 3 2013

BS EN 61753-051-3:2013 BSI Standards Publication Fibre optic interconnecting devices and passive components — Performance standard Part 051-3: Single-mode fibre, plug style fixed attenuators for category U — Uncontrolled environment BRITISH STANDARD BS EN 61753-051-3:2013 National foreword This British Standard is the UK implementation of EN 61753-051-3:2013 It is identical to IEC 61753-051-3:2013 It supersedes BS EN 61753-051-3:2002 which is withdrawn The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconnecting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 2013 Published by BSI Standards Limited 2013 ISBN 978 580 56297 ICS 33.180.20; 33.180.99 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 May 2013 Amendments issued since publication Amd No Date Text affected BS EN 61753-051-3:2013 EN 61753-051-3 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM May 2013 ICS 33.180.20 Supersedes EN 61753-051-3:2002 English version Fibre optic interconnecting devices and passive components Performance standard Part 051-3: Single-mode fibre, plug style fixed attenuators for category U Uncontrolled environment (IEC 61753-051-3:2013) Dispositifs d'interconnexion et composants passifs fibres optiques Norme de performance Partie 051-3: Affaiblisseurs fixes de type fiche pour fibres unimodales en catégorie U Environnement non-contrôlé (CEI 61753-051-3:2013) Lichtwellenleiter – Verbindungselemente und passive Bauteile – Betriebsverhalten Teil 051-3: LichtwellenleiterDämpfungsglieder mit Einmoden-Pigtail in Steckverbinderbauform für die Kategorie U Unkontrollierte Umgebung (IEC 61753-051-3:2013) This European Standard was approved by CENELEC on 2013-03-13 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 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels © 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 61753-051-3:2013 E BS EN 61753-051-3:2013 EN 61753-051-3:2013 -2- Foreword The text of document 86B/3543/FDIS, future edition of IEC 61753-051-3, 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 61753-051-3:2013 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 latest date by which the national standards conflicting with the document have to be withdrawn (dop) 2013-12-13 (dow) 2014-03-13 This document supersedes EN 61753-051-3:2002 The specific technical changes from EN 61753-051-3:2002 are to reconsider test details and requirement and the constitution of the standard 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 Endorsement notice The text of the International Standard IEC 61753-051-3:2013 was approved by CENELEC as a European Standard without any modification -3- BS EN 61753-051-3:2013 EN 61753-051-3:2013 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 Publication Year Title EN/HD Year IEC 60793-2-50 - Optical fibres Part 2-50: Product specifications - Sectional specification for class B single-mode fibres EN 60793-2-50 - IEC 61300-2-1 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-1: Tests - Vibration (sinusoidal) EN 61300-2-1 - IEC 61300-2-2 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-2: Tests - Mating durability EN 61300-2-2 - IEC 61300-2-6 - Fibre optic interconnecting devices and EN 61300-2-6 passive components - Basic test and measurement procedures Part 2-6: Tests - Tensile strength of coupling mechanism - IEC 61300-2-9 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-9: Tests - Shock EN 61300-2-9 - IEC 61300-2-12 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-12: Tests - Impact EN 61300-2-12 - IEC 61300-2-14 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-14: Tests - High optical power EN 61300-2-14 - IEC 61300-2-17 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-17: Tests - Cold EN 61300-2-17 - IEC 61300-2-18 - Fibre optic interconnecting devices and EN 61300-2-18 passive components - Basic test and measurement procedures Part 2-18: Tests - Dry heat - High temperature endurance - BS EN 61753-051-3:2013 EN 61753-051-3:2013 -4- IEC 61300-2-22 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-22: Tests - Change of temperature EN 61300-2-22 - IEC 61300-2-26 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-26: Tests - Salt mist EN 61300-2-26 - IEC 61300-2-27 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-27: Tests - Dust - Laminar flow EN 61300-2-27 - IEC 61300-2-46 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2-46: Tests - Damp heat cyclic EN 61300-2-46 - IEC 61300-3-2 - Fibre optic interconnecting devices and EN 61300-3-2 passive components - Basic test and measurement procedures Part 3-2: Examinations and measurements Polarization dependent loss in a single-mode fibre optic device - 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 EN 61300-3-3 - IEC 61300-3-4 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-4: Examinations and measurements Attenuation EN 61300-3-4 - IEC 61300-3-6 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-6: Examinations and measurements Return loss EN 61300-3-6 - IEC 61300-3-7 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-7: Examinations and measurements Wavelength dependence of attenuation and return loss of single mode components EN 61300-3-7 - IEC 61300-3-28 - Fibre optic interconnecting devices and EN 61300-3-28 passive components - Basic test and measurement procedures Part 3-28: Examinations and measurements Transient loss IEC 61754 Series Fibre optic connector interfaces EN 61754 Series IEC 61755 Series Fibre optic connector optical interfaces EN 61755 Series IEC/TR 62627-02 2010 Fibre optic interconnecting devices and passive components Part 02: Report of round robin test results on SC plug style fixed attenuators - - –2– BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 CONTENTS Scope Normative references Test Test report Performance requirements 5.1 5.2 5.3 Annex A Sample size, sequencing and grouping Dimensions Test details and requirements (normative) Reference connector and adaptor 14 Annex B (normative) Sample size and product sourcing requirements 15 Table – Test details and requirements (1 of 7) Table A.1 – Requirements for reference connector and adaptor 14 Table B.1 − Sample size and product sourcing requirements 15 BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 –5– FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS – PERFORMANCE STANDARD – Part 051-3: Single-mode fibre, plug style fixed attenuators for category U – Uncontrolled environment Scope This part of IEC 61753 contains the minimum initial test and measurement requirements and severities which a fibre optic attenuator satisfies in order to be categorized as meeting the requirements of single-mode fibre, plug-style fixed attenuator devices used in uncontrolled environments Optical performances specified in this standard relate to plug-style configurations optical attenuators only 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 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for class B single-mode fibres IEC 61300-2-1, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-1: Tests – Vibration (sinusoidal) IEC 61300-2-2, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-2: Tests – Mating durability IEC 61300-2-6, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-6: Tensile strength of coupling mechanism IEC 61300-2-9, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-9: Tests – Shock IEC 61300-2-12, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-12: Tests – Impact IEC 61300-2-14, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-14: Tests – High optical power IEC 61300-2-17, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-17: Tests – Cold ————————— A fourth edition is due to be published shortly –6– BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 IEC 61300-2-18, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-18: Tests – Dry heat– High temperature endurance IEC 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-22: Tests – Change of temperature IEC 61300-2-26, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-26: Tests –Salt mist IEC 61300-2-27, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-27: Tests – Dust – Laminar flow IEC 61300-2-46, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-46: Tests – Damp heat, cyclic IEC 61300-3-2, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-2: Examination and measurements – Polarization dependent loss in a single-mode fibre optic device IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-3: Examinations and measurement – 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 IEC 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-6: Examinations and measurements – Return loss IEC 61300-3-7, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-7: Examinations and measurements – Wavelength dependence of attenuation and return loss of single mode components IEC 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-28: Examinations and measurements – Transient loss IEC 61754 (all parts), Fibre optic connector interfaces IEC 61755 (all parts), Fibre optic connector optical interfaces IEC/TR 62627-02:2010, Fibre optic interconnecting devices and passive components – Part 02: Report of round robin test results on SC plug style fixed attenuators Test All test methods are in accordance with the IEC 61300 series All tests shall be carried out to validate performance over the required operating wavelength and power range ————————— A third edition is due to be published shortly BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 –7– Test report Fully documented test reports and supporting evidence shall be prepared and shall be available for inspection as evidence that the tests have been carried out and complied with 5.1 Performance requirements Sample size, sequencing and grouping The sample size to be used for the tests shall be as defined in Annex B Test groups shall be performed as shown in Annex B 5.2 Dimensions Dimensions of mechanical interface for mating, plug and receptacle size shall comply with both the IEC 61754 series and the IEC 61755 series Other dimensions shall comply with those given in appropriate manufacturer's drawings When implementing this standard be aware that there have been problems when using a rigid interface component with SC plug style adaptors and plugs See Clause of IEC/TR 62627-02:2010 5.3 Test details and requirements Table defines the performance requirements and test details for plug style fixed attenuators Table – Test details and requirements (1 of 7) No Tests Insertion loss Requirements Details Passband: 260 nm-1 360 nm and/or 460 nm – 625 nm Method: IEC 61300-3-4, test sample configuration according to IEC 61300-34 substitution method For nominal values ≤ dB the tolerance shall be ≤ ± 0.75 dB around the nominal insertion loss value Launch patchcord length: ≥ m Only the fundamental mode shall propagate at the attenuator interface and at the detector Other requirements: This test shall be performed against a reference plug and reference adaptora, b This test shall be performed twice, reversing the sample Launch conditions: The wavelength of the source shall be longer than cut-off wavelength of the fibre Optical source wavelength: 310 nm ± 10 nm, 550 nm ± 10 nm and 625 nm ± 10 nm Test every sample with the three wavelengths Source power stability: Within ± 0,05 dB over the measuring period or at least h Total uncertainty: ≤ ± 0,1 dB For nominal values > dB the tolerance shall be ≤ ± 15 % around the nominal insertion loss value –8– BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 Table (2 of 7) No Tests Return loss Requirements ≥ 35 dB ≥ 40 dB ≥ 50 dB ≥ 60 dB mated for for for for attenuator attenuator attenuator attenuator Grade Grade Grade Grade Details T R U V ≥ 55 dB for attenuator Grade V unmated Polarization dependent loss Polarization mode dispersion High optical power ≤ 0,3 dB at 550 nm The samples shall be terminated onto single-mode fibres as per IEC 60793-2-50, Type B1.1, in either coated fibres (primary and secondary) or reinforced cable format ≤0,2 ps Over the specified operating wavelength range Method: IEC 61300-3-6 measurement method 1, OCWR (performed against a reference plug and reference adaptor a,b ) measurement with a branching device Optical source wavelength: 310 nm ± 10 nm, 550 nm ± 10 nm and 625 nm ± 10 nm Test every sample with the three wavelengths Other requirements: This test shall be performed twice, reversing the sample Both measurements shall be within the specified limits Total uncertainty: ≤ ± 0,5 dB Method: IEC 61300-3-2, all polarization method Optical source wavelength: 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm Test every sample with one wavelength, Total uncertainty: ≤ ± 0,05 dB over the dynamic range to be measured IEC 61300-3-32, MPS method Method: Optical source Wavelength: 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm Test every sample with one wavelength, changing wavelength for each sample Total uncertainty: Before and after the test the insertion loss shall meet the requirements of test Method: ≤± 0,05 dB over the dynamic range to be measured IEC 61300-2-14 Test temperature: 25 °C ± °C Before and after the test the return loss shall meet the requirements of test Optical source Wavelength: 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm During the test insertion loss and return loss shall be monitored Test every sample with one wavelength, changing wavelength for each sample Test duration: h at each power level Power increments: For nominal insertion loss ≤ dB: 100 mW power increments For nominal insertion loss> dB: 10 mW continuous power increments The above increments are applied up to the maximum allowed power input of: - 10 dBm for 1,25 mm ferrule; - 20 dBm for 2,5 mm ferrule BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 –9– Table (3 of 7) No Tests Vibration Requirements Before and after the test the insertion loss shall meet the requirements of test Before and after the test the return loss shall meet the requirements of test The insertion loss change during the test shall be within ± 0,5 dB of the initial value Details Method: IEC 61300-2-1 During the test the change in insertion loss shall be measured by transient loss test method IEC 61300-3-28 Frequency range: 10 Hz to 55 Hz Constant vibration amplitude: Number of cycles: 0,75 mm Number of axes: orthogonal Sweep rate: oct/min Optical source Wavelength: 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm 15 Test every sample with one wavelength, changing wavelength for each sample Strength of coupling mechanism Before and after the test the insertion loss shall meet the requirements of test Before and after the test the return loss shall meet the requirements of test The insertion loss change during the test shall be within ± 0,5 dB of the initial value Specimen optically functioning: Method: Yes IEC 61300-2-6 Magnitude of the load: 40 N, at a rate of N/s Load application point: 0,2 m from the optical interface Duration of the load: 120 s Optical source wavelength: 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm Test every sample with one wavelength, changing wavelength for each sample Specimen optically functioning: Yes BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 – 10 – Table (4 of 7) No Tests Mating durability Requirements Before and after the test the insertion loss shall meet the requirements of test Before and after the test the return loss shall meet the requirements of test Details Method: IEC 61300-2-2 Number of mating cycles: 500, all parts (connector-attenuatoradaptor-connector) shall be demated and mated 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm Optical source wavelength: The insertion loss change during the test shall be within ± 0,5 dB of the initial value Test every sample with one wavelength, changing wavelength for each sample Specimen optically functioning: Yes Other specifications: Preconditioning procedure: clean plug and adaptor according to manufacturer’s instructions In situ conditioning procedure: clean the mechanical and optical alignment parts of the moving connector according to the manufacturer instructions after cycle 24, 74, 124, and 174 Clean both the moving and stationary connectors and adaptor according to the manufacturer instructions after cycle 49, 99, 149, and 199 No additional cleaning or recleaning is allowed 10 Impact Cold Recovery procedure: the mechanical and optical alignment parts of the specimen may be cleaned according to manufacturer instructions up to times after the final mating cycle IEC 61300-2-12, Method A Before and after the test the insertion loss shall meet the requirements of test Method: Before and after the test the return loss shall meet the requirements of test Drop height: 1,5 m Specimen optically functioning: No Method: IEC 61300-2-17: During the test the change in insertion loss shall be measured by test method IEC 61300-3-3 Temperature: –25 °C ± °C Duration of the exposure: 96 h Specimen shall be unmated during the test, dust covers in place During the test the maximum allowed change in insertion loss is: ≤ 0,5 dB for attenuator ≤ dB ≤ 10% for attenuators > dB Before and after the test the insertion loss requirements of test No shall be met Before and after the test the return loss requirement of test No shall be met Optical source wavelength: 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm Test every sample with one wavelength, changing wavelength for each sample Maximum sampling interval during the test: Specimen optically functioning: 1h Yes BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 – 11 – Table (5 of 7) No 11 Tests Dry heat Requirements During the test the maximum allowed change in insertion loss is: ≤ 0,5 dB for attenuator ≤ dB ≤ 10 % for attenuators > dB Method: Before and after the test the insertion loss requirements of test No shall be met Duration of the exposure: Optical source Wavelength: Before and after the test the return loss requirement of test No shall be met 12 Damp heat (cyclic) Details During the test the maximum allowed change in insertion loss is: ≤ 0,5 dB for attenuator ≤ dB ≤ 10 % for attenuators > dB Temperature: Maximum sampling interval during the test: Specimen optically functioning: Method: IEC 61300-2-18 During the test the change in insertion loss shall be measured by test method IEC 61300-3-3 + 70 °C ± °C 96 h 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm Test every sample with one wavelength, changing wavelength for each sample 1h Yes IEC 61300-2-46 During the test the change in Insertion Loss shall be measured by test method IEC 61300-3-3 Before and after the test the insertion loss requirements of test No shall be met High temperature: +55 °C ± °C Low temperature: +25 °C ± °C Before and after the test the return loss requirement of test No shall be met Humidity: >95 % RH ± % RH Number of cycles: Duration of each cycle: 24 h Optical source wavelength: 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm Test every sample with one wavelength, changing wavelength for each sample Maximum sampling interval during the test: 1h Specimen optically functioning: Yes BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 – 12 – Table (6 of 7) No 13 Tests Requirements Change of temperature During the test the maximum allowed change in insertion loss is: ≤ 0,5 dB for attenuator ≤ dB ≤ 10 % for attenuators > dB Before and after the test the insertion loss requirements of test No shall be met Before and after the test the return loss requirement of test No shall be met 14 Dust Salt mist IEC 61300-2-22 (Test Nb): During the test the change in insertion loss shall be measured by test method IEC 61300-3-3 High temperature: +70 °C ± °C Low temperature: –25 °C ± °C Number of cycles: 12 Rate of temperature change: °C/min Duration at extreme temperatures: 1h Optical source wavelength: 310 nm ± 10 nm 550 nm ± 10 nm 625 nm ± 10 nm Test every sample with one wavelength, changing wavelength for each sample Maximum sampling interval during the test: 15 Specimen optically functioning: Yes Before and after the test the insertion loss shall meet the requirements of test Method: IEC 61300-2-27 Temperature: +35 °C ± °C Before and after the test the return loss shall meet the requirements of test Humidity: +60 % RH ± % RH Dust type: Talc Before and after the test Specimen tested in mated position Dust particle diameter: < 150 µm No significant difference either in the visual aspect or in the strength coupling mechanism shall be noticed 15 Details Method: Before and after the test the insertion loss shall meet the requirements of test Before and after the test the return loss shall meet the requirements of test Before and after the test specimen tested in mated position Dust concentration: 10,6 g/m ± 7,1 g/m Test duration: 10 Specimen optically functioning: No Method: IEC 61300-2-2 Temperature: Salt solution (NaCl) concentration: pH +35 °C ± °C 5%±1% Test duration: 96 h Specimen optically functioning: No Between 6,5 and 7,2 BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 – 13 – Table (7of 7) No 16 Tests Shock Requirements Before and after the test the insertion loss shall meet the requirements of test Before and after the test the return loss shall meet the requirements of test Before and after the test specimen tested in mated position Details Method: IEC 61300-2-9 Acceleration force: 500 g Time: 1ms duration, half sine pulse No of shocks: axes in directions, shocks per axis, 12 shocks total Specimen optically functioning: No a Reference connector and adaptor definition is given in Annex A b Clean connectors, plugs and adaptors according to manufacturer's instructions, prior to every mating, in all tests unless otherwise specified – 14 – BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 Annex A (normative) Reference connector and adaptor Table A.1 gives reference connector and adaptor references Table A.1 – Requirements for reference connector and adaptor Ferrule outer diameter 2,499 mm ± 0,000 mm 1,249 mm ± 0,000 mm Eccentricity of fibre core centre to ferrule centre ≤ 0,3 µm ≤ 0,3 µm Deviation of axis of fibre to axis of ferrule ≤ 0,2° ≤ 0,2° Eccentricity of spherically polished ferrule endface ≤ 50 µm ≤ 50 µm Visual examination of fibre end surface with x200 magnification No defects in core zone No defects in core zone Insertion loss between two reference plugs ≤ 0,2 dB ≤ 0,2 dB Visual examination Every 50 mating Every 50 mating Reference adaptors should give 0,2 dB maximum insertion loss when used with two reference plugs BS EN 61753-051-3:2013 61753-051-3 © IEC:2013 – 15 – Annex B (normative) Sample size and product sourcing requirements Table B.1 gives sample size and product sourcing requirements Table B.1 − Sample size and product sourcing requirements No Test Sample size Source N/A Dimensional 10 New Insertion loss 52 New Return loss 52 Test Polarization dependence of insertion loss 52 Test Polarization mode dispersion 52 Test Optical power handling and damage threshold characterization Test Vibration (sinusoidal) Test Tensile strength of coupling mechanism Test Mating durability Test Impact Test 10 Cold Test 11 Dry heat Test 12 Damp heat, cyclic Test 13 Change of temperature Test 14 Dust Test 15 Salt mist Test 16 Shock Test Tests to 16 may be performed in any order providing product is sourced as shown in the table _ This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited About us Revisions We bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions Our British Standards and other publications are updated by amendment or revision The knowledge embodied in our standards has been 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