BS EN 61300-3-51:2014 BSI Standards Publication Fibre optic interconnecting devices and passive components — Basic test and measurement procedures Part 3-51: Examinations and measurements — Pin gauge withdrawal force for rectangular ferrule multi-fibre connectors BRITISH STANDARD BS EN 61300-3-51:2014 National foreword This British Standard is the UK implementation of EN 61300-3-51:2014 It is identical to IEC 61300-3-51:2014 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 79343 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 December 2014 Amendments/corrigenda issued since publication Date Text affected EUROPEAN STANDARD EN 61300-3-51 NORME EUROPÉENNE EUROPÄISCHE NORM November 2014 ICS 33.180.20 English Version Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-51: Examinations and measurements - Pin gauge withdrawal force for rectangular ferrule multi-fibre connectors (IEC 61300-3-51:2014) Dispositifs d'interconnexion et composants passifs fibres optiques - Procédures fondamentales d'essais et de mesures - Partie 3-51: Examens et mesures - Force d'extraction d'une broche calibrée pour des connecteurs multifibres férule rectangulaire (CEI 61300-3-51:2014) Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und Messverfahren Teil 3-51: Untersuchungen und Messungen - PrüfstiftAusziehkraft von rechteckigen Ferrulen von Mehrfachfasersteckverbindern (IEC 61300-3-51:2014) This European Standard was approved by CENELEC on 2014-11-14 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 61300-3-51:2014 E BS EN 61300-3-51:2014 EN 61300-3-51:2014 -2- Foreword The text of document 86B/3817/FDIS, future edition of IEC 61300-3-51, 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 61300-3-51:2014 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) 2015-08-14 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-11-14 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 61300-3-51:2014 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 61300-3-49 NOTE Harmonized as EN 61300-3-49 BS EN 61300-3-51:2014 EN 61300-3-51:2014 -3- 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 Year Title EN/HD Year IEC 61300-3-1 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-1: Examinations and measurements - Visual examination EN 61300-3-1 - IEC 61754-5 - Fibre optic connector interfaces Part 5: Type MT connector family EN 61754-5 - IEC 61754-7-1 - Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces Part 7-1: Type MPO connector family One fibre row EN 61754-7-1 - IEC 61754-7-2 - Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces Part 7-2: Type MPO connector family Two fibre rows EN 61754-7-2 - IEC 61754-10 - Fibre optic connector interfaces EN 61754-10 Part 10: Type Mini-MPO connector family - IEC 61754-18 - Fibre optic connector interfaces Part 18: Type MT-RJ connector family - EN 61754-18 –2– BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 CONTENTS Scope Normative references General description 3.1 General 3.2 Test conditions Apparatus 4.1 Fixture 4.2 Pin gauge chuck 4.3 Plug gauge chuck 4.4 Pin gauge 4.5 Plug gauge 4.6 Weight 4.7 Tensile testing machine Procedure 5.1 Method A: Method using the weight (Figure 3) 5.2 Method B: Method using the tensile testing machine (Figure 4) 10 Details to be specified 12 Annex A (informative) Experimental verification of the interchangeability between the pin gauge insertion force and the pin gauge withdrawal force 13 A.1 General 13 A.2 Measurement system 13 A.3 Measurement sample 13 A.4 Measurement procedure 14 A.5 Measurement results 14 A.6 Conclusion 15 Annex B (informative) Experimental verification of compatibility of Method A (method using the weight) and Method B (method using the tensile testing machine) 16 Bibliography 17 Figure – Pin gauge Figure – Plug gauge for guide pin holes Figure – Method A for examination of pin gauge/plug gauge withdrawal force (method using the weight) 10 Figure – Method B for examination of pin gauge/plug gauge withdrawal force (method using the tensile testing machine) 11 Figure A.1 – Measurement system 13 Figure A.2 – Insertion/withdrawal force measurement results 14 Figure B.1 – Relation between the withdrawal force values measured by Method A and Method B 16 BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 –3– Table – Test conditions Table – Dimensions of the pin gauge Table – Dimensions for plug gauge for guide pin holes Table A.1 – Guide hole pitch of measurement samples 14 –6– BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS – BASIC TEST AND MEASUREMENT PROCEDURES – Part 3-51: Examinations and measurements – Pin gauge withdrawal force for rectangular ferrule multi-fibre connectors Scope This part of IEC 61300 is intended to describe the procedure required to measure the pin gauge withdrawal force for rectangular ferrule multi-fibre connectors This measurement can be used as an alternative to the measurement of the pin gauge insertion force, both of which evaluate the fit of the pin gauge(s) into the guide pin hole(s) of the female-type connector The experimental verification of interchangeability between them is shown in Annex A For the male-type connector, IEC 61300-3-49 is applied to evaluate how securely the guide pins are retained in the guide holes 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 61754-5, Fibre optic interconnecting devices and passive components – Fibre optic connector interfaces – Part 5: Type MT connector family IEC 61754-7-1, Fibre optic interconnecting devices and passive components – Fibre optic connector interfaces – Part 7-1: Type MPO connector family – One fibre row IEC 61754-7-2, Fibre optic interconnecting devices and passive components – Fibre optic connector interfaces – Part 7-2: Type MPO connector family – Two fibre rows IEC 61754-10, Fibre optic interconnecting devices and passive components – Fibre optic connector interfaces – Part 10: Type Mini-MPO connector family IEC 61754-18, Fibre optic interconnecting devices and passive components – Fibre optic connector interfaces – Part 18: Type MT-RJ connector family _ To be published BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 3.1 –7– General description General This measurement method is applied for optical connectors specified in IEC 61754-5, IEC 61754-7-1, IEC 61754-7-2, IEC 61754-10 and IEC 61754-18 Two methods using weights or a tensile testing machine are described in this standard The optical connector is held using a fixture For the measurement for a single guide pin hole, the pin gauge is placed in a pin gauge chuck and the weight or the tensile testing machine is connected to the pin gauge chuck For the measurement for two guide pin holes, the plug gauge is placed in a plug gauge chuck and the weight or the tensile testing machine is connected to the plug gauge chuck By using the plug gauge, it is possible to check not only the size of each guide pin hole but also the relative position and the relative angle between two guide pin holes 3.2 Test conditions For a precise measurement such as design verification, the test conditions shall be controlled accurately as required in Table Table – Test conditions 4.1 Temperature °C Relative humidity % RH 22,0 – 24,0 50,0 ± 10,0 Apparatus Fixture The measurement shall not be affected by the connector fixture The position and direction of the connector during the test shall not change as the test is repeated The connector shall be placed in the fixture so that the front face of the connector housing is retained by the fixture as shown in Figure and Figure 4.2 Pin gauge chuck The pin gauge chuck shall have a pin gauge retention force much greater than the required connector pin gauge withdrawal force, typically more than 200 N when using a tensile testing machine The connection of the pin gauge to the weight or the tensile testing machine chuck shall not affect the measurement 4.3 Plug gauge chuck The plug gauge chuck shall have a plug gauge retention force much greater than the required connector plug gauge withdrawal force, typically more than 200 N, when using a tensile testing machine The connection of the plug gauge to the weight or the tensile testing machine chuck shall not affect the measurement 4.4 Pin gauge Figure and Table show the pin gauge and dimensions of the pin gauge The pin gauge shall have the required dimensions as specified in IEC 61754-5 ∅BA –8– 0,000 BB ∅A BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 BC B IEC Figure – Pin gauge Table – Dimensions of the pin gauge Dimensions mm Reference A B a BA BB BC 4.5 b Remarks Minimum Maximum 0,698 0,699 10,8 11,2 0,2 0,4 0,2 0,5 6,0 – a Typical dimensions b Surface roughness R z = 0,1 µm for the length of dimension BC Plug gauge Figure and Table show the plug gauge and its dimensions The plug gauge shall have the required dimensions as specified in IEC 61754-5 C ∅A ∅BA W D ∅0,001 W BB BC U 0,000 IEC Figure – Plug gauge for guide pin holes BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 –9– Table – Dimensions for plug gauge for guide pin holes Dimensions mm Reference Maximum A 0,698 0,699 C 4,599 4,600 D a 6,3 6,5 U a 2,4 2,5 0,2 0,4 0,2 0,5 6,0 6,5 BA BB BC 4.6 Remarks Minimum b a Typical dimensions b Surface roughness R z = 0,1 µm for the length of dimension BC For two pins Weight The weight to be used depends on the test to be carried out The weight measurement is used for pass/fail tests including final inspection 4.7 Tensile testing machine The tensile testing machine shall be able to record (and/or hold) the maximum value during the measurement The tensile testing machine measurement is used for design verification testing 5.1 Procedure Method A: Method using the weight (Figure 3) The following steps shall be taken: a) Prepare the device under test (DUT) according to the manufacturer’s instructions and check the appearance in accordance with IEC 61300-3-1 b) Place the DUT in the fixture c) Place the pin gauge or the plug gauge in the chuck d) Insert the pin gauge or the plug gauge into the guide pin hole(s) of the connector by more than 5,5 mm e) Fix the weight to the chuck Adjust the total weight of the jig and the weight to the specified value f) Apply the weight slowly Be sure that the force is applied along the axis of the guide pin hole(s) g) Wait for the specified duration Record if the pin gauge or the plug gauge is withdrawn by the specified force Unless otherwise specified, the maximum duration shall be 15 s BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 – 10 – Fixture Fixture DUT (optical connector) DUT (optical connector ) Pin gauge Plug gauge Pin gauge chuck Plug gauge chuck Weight Weight IEC IEC Figure 3a – Measurement for single hole Figure 3b – Measurement for two holes Figure – Method A for examination of pin gauge/plug gauge withdrawal force (method using the weight) 5.2 Method B: Method using the tensile testing machine (Figure 4) The following steps shall be taken: a) Prepare the device under test according to the manufacturer’s instructions and check the appearance in accordance with IEC 61300-3-1 b) Place the DUT in the fixture c) Place the pin gauge or the plug gauge in the chuck d) Insert the pin gauge or the plug gauge into the guide pin hole(s) of the connector by more than 5,5 mm e) Connect the chuck to the tensile testing machine f) Apply tension using the tensile testing machine The weight of the chuck should be factored in Be sure that the force is applied along the axis of the guide pin hole(s) g) Measure and record the maximum value when the pin gauge or the plug gauge is withdrawn Rate of application shall be approximately 25 mm/min when the rate is not otherwise specified BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 – 11 – Fixture Fixture DUT (optical connector) DUT (optical connector) Pin gauge Plug gauge Pin gauge chuck Plug gauge chuck Tensile testing machine Tensile testing machine IEC Figure 4a – Measurement for single hole IEC Figure 4b – Measurement for two holes Figure – Method B for examination of pin gauge/plug gauge withdrawal force (method using the tensile testing machine) – 12 – BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 Details to be specified The following details, as applicable, shall be stated in the relevant specification: – DUT preparation; – Acceptable value of withdrawal force; – Allowable withdrawing time of method using weight; – Deviations from this test method; – Measurement uncertainty BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 – 13 – Annex A (informative) Experimental verification of the interchangeability between the pin gauge insertion force and the pin gauge withdrawal force A.1 General The pin gauge insertion force for rectangular ferrule is specified in standards such as IEC 61754-5 However, the measurement is so demanding that in many cases it needs some specially fabricated equipment to be carried out with enough accuracy and repeatability Therefore, less demanding pin gauge withdrawal force is recommended as an alternative to the pin gauge insertion force To verify the interchangeability between the pin gauge insertion force and the pin gauge withdrawal force, the following experiment was conducted A.2 Measurement system MPO-holder DUT (MPO) Plug gauge Plug gauge holder Digital force gauge Y X Z XY-alignment stage Z-slidable stage IEC Figure A.1 – Measurement system The measurement system is shown in Figure A.1 The plug gauge is attached to the sensor head of the digital force gauge and aligned with the MPO connector The digital force gauge is fixed on the Z-slidable stage and the MPO-holder is attached on the XY-alignment stage The MPO holder and the plug gauge holder have some looseness to allow the MPO and the plug gauge to make slight angular movement for precise alignment of their axes A.3 Measurement sample Measurement samples are prepared so that they represent the dimensions of the centre of the specification and the edge of the specification, respectively BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 – 14 – Table A.1 – Guide hole pitch of measurement samples Guide hole pitch a Sample A mm Sample B mm 4,601 4,603 a Specification for the guide hole pitch: 4,600 ±0,003 A.4 Measurement procedure The following steps shall be taken: a) Set the DUT on the MPO holder b) Align the guide holes with the plug gauge using the XY-alignment stage c) Move the Z-slidable stage and insert the plug gauge into the guide holes d) Read and record the peak value of force gauge for each 0,5 mm insertion until the insertion length reaches to 5,5 mm e) Move the Z-slidable stage and withdraw the plug gauge from the guide holes f) Read and record the peak value of force gauge for each 0,5 mm withdrawal until the plug gauge is completely withdrawn Repeat step a) to f) five times A.5 Measurement results Sample A 3,5 Force (N) 3,0 Inserting Withdrawing 2,5 2,0 1,5 Insertion force N Withdrawal force N 1,0 Average 0,855 0,818 0,5 Standard 0,053 0,059 n 5 Insertion force N Withdrawal force N Average 1,716 1,746 1,5 Standard 0,107 0,075 1,0 n 5 0,0 0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0 5,5 Insertion / withdrawal length (mm) Sample B 3,5 Force (N) 3,0 Inserting Withdrawing 2,5 2,0 0,5 0,0 0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0 5,5 Insertion / withdrawal length (mm) Figure A.2 – Insertion/withdrawal force measurement results BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 A.6 – 15 – Conclusion For both samples and each insertion length, the measured values of the withdrawal force are almost the same as the corresponding values of the insertion force In addition, the repeatability of the measurements is high enough and the fluctuations between repeated insertion/withdrawal are small enough compared to the specified maximum value (3,4 N) According to these results, the withdrawal force measurement can be used as an alternative to the insertion measurement BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 – 16 – Annex B (informative) Experimental verification of compatibility of Method A (method using the weight) and Method B (method using the tensile testing machine) The pin gauge withdrawal force is measured by Methods A and B for several combinations of MT ferrules and guide plugs In order to obtain a wide range of withdrawal force values, some non-specification ferrules are also measured Figure B.1 shows the relation between the values measured by each method The dotted lines at 3,4 N on both axes represent the maximum allowable values Each value measured by one of the methods shows a close alignment with the corresponding value measured by the other method From this result, the two methods can be considered as compatible with each other in the specified region of the allowable withdrawal force (N) Method (tensile machine) Withdrawal force Method (weight) IEC Figure B.1 – Relation between the withdrawal force values measured by Method A and Method B BS EN 61300-3-51:2014 IEC 61300-3-51:2014 © IEC 2014 – 17 – Bibliography IEC 61300-3-49, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-49: Examinations and measurements – Guide pin retention force for rectangular ferrule multi-fibre connectors _ This page deliberately left blank 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 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