1、BRITISH STANDARD BS EN 186270:1998 Incorporating Corrigendum No. 1 Harmonized system of quality assessment for electronic components Sectional specification: Connector sets for optical fibres and cables Type LSH The European Standard EN 186270:1997 has the status of a British Standard ICS 33.180.20B
2、SEN 186270:1998 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comes intoeffect on 15 March 1998 BSI 04-1999 ISBN 0 580 29353 X National foreword This British Standard is the English lan
3、guage version of EN186270:1997 published by the Electronic Components Committee (CECC) of the European Committee for Electrotechnical Standardization (CENELEC). The UK participation in its preparation was entrusted by Technical Committee EPL/86, Fibre optics, to Subcommittee EPL/86/2, Interconnectin
4、g devices and passive components, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Eur
5、opean developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to interna
6、tional publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facilit
7、y of the BSI Standards Electronic Catalogue. 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 obligatio
8、ns. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 9 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the insid
9、e front cover. Amendments issued since publication Amd. No. Date Comments 10049 May 1998 Indicated by a sideline in the marginBSEN 186270:1998 BSI 04-1999 i Content Page National foreword Inside front cover Foreword 2 Text of EN 186270 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 18
10、6270 November 1997 Descriptors: Quality, electronic components, connectors English version Sectional specification: Connector sets for optical fibres and cables Type LSH Spcification intermdiaire: Jeux de connecteurs pour fibres et cbles optiques Type LSH Rahmenspezifikation: Steckverbinder fr Licht
11、wellenleiter und Lichtwellenleiterkabel Typ LSH This European Standard was approved by CENELEC on 1994-10-16. 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 a
12、lteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made b
13、y translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany,
14、Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretar
15、iat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 186270:1997 EEN 186270:1997 BSI 04-1999 2 Foreword This European Standard was prepared by the Technical Committee CENELEC TC86BXA (former
16、WG 26 of CLC/TC CECC), Fibre optic connectors. The text of the draft based on document CECC(Secretariat)3552 was submitted to the formal vote; together with the voting report, circulated as document CECC(Secretariat)3623, it was approved as EN 186270 on 1994-10-16. The following dates were fixed: Co
17、ntents Page Foreword 2 CECC Specification system 3 1 General 4 1.1 Scope 4 1.2 Related documents 4 1.3 Definitions 4 1.4 Safety 4 1.5 Marking 5 2 Requirements 5 2.1 Classification 5 2.2 Reference components 7 2.3 Gauges 7 2.4 Mounting requirements 7 3 Quality assessment procedures 7 3.1 Qualificatio
18、ns approval 7 3.2 Quality conformance inspection 8 3.3 Delayed deliveries 9 Figure 1 Plug mating face single limit dimensions 6 Figure 2 Adaptor mating face single limit dimensions 7 latest date by which the EN has to be implemented at national level by publication of an identical national standard
19、or by endorsement (dop) 1998-08-15 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1999-08-15EN186270:1997 BSI 04-1999 3 Document numbering for fibre optic connector specifications follows 2.2(1) of CECC 00700, Sect. IV, in order to permit the issue of
20、more than nine sectional specifications (SSs). The approved numbering system applicable to fibre optic connector specifications is illustrated in the following diagram:EN 186270:1997 4 BSI 04-1999 1 General 1.1 Scope This SS covers a family of single way fibre optic connector sets which are classifi
21、ed as type LSH. Type LSH is a connector set of plug-adaptor-plug configuration. It features a locked latch push-pull coupling mechanism and a cylindrical butting ferrule. The optical alignment mechanism may be a split sleeve or a rigid bore contained within the adaptor. This specification contains t
22、he requirements for type LSH connector sets. Detail specifications (DSs) shall be prepared using the following proforma general blank detail specifications (BDS). For example: EN 186000-1 Environmental category V When completed, the DSs applicable to this SS shall be numbered in accordance with CECC
23、00700(SectionIV) Issue1, clause 4.2, as follows. For example: CECC 86 275-XXX Type LSH Environmental category V 1.2 Related documents The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions ind
24、icated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of CECC, IEC and ISO maintain registers of currently valid Internationa
25、l Standards. References made to a specific clause or subclause of a standard includes all subclauses to the reference unless otherwise specified. EN 186000-1, Generic specification GS for connector sets for optical fibres and cables. Part 1. IEC 825, Radiation safety of laser products, equipment cla
26、ssification, requirements and users guide. ISO 128, Technical drawings General principles of presentation. ISO 8015, Technical drawings; fundamental tolerancing principle. 1.3 Definitions All necessary definitions are given in EN186000-1. 1.4 Safety 1.4.1 Optical fibre connectors, when used as part
27、of an optical fibre system, may emit/produce potentially hazardous radiation. The manufacturers of connectors are not obliged to mark them as such, but sufficient information should be made available in the manufacturers literature to enable the system designer to assess the degree of hazard. This i
28、nformation shall be given prominence in the DS. 1.4.2 The assembly instructions, included in the connector package, shall give a prominent warning to the assembler, of the necessary work practices. 1.4.3 The responsibility for the safe application of the connector lies with the system design enginee
29、r, who should refer to IEC825. As there is no safety guide for light emitting diodes (LEDs), IEC825 shall apply to systems using these also. 1.4.4 DSs should give the following information in a prominent position: WARNING “Care should be taken when handling small diameter optical fibre, to prevent i
30、t puncturing the skin, especially in the eye area.EN186270:1997 BSI 04-1999 5 Direct viewing of the end of an optical fibre or a terminated optical fibre, while it is propagating energy, is not recommended unless prior assurance has been obtained as to the safe level of the energy output”. 1.5 Marki
31、ng See 2.6 of EN186000-1. 2 Requirements The requirements specified in Section 2 and Section 3 of EN186000-1 apply. The requirements for connector sets components covered by this specification are as specified herein and in the relevant DS. 2.1 Classification The connector sets covered by this speci
32、fication are classified as: The single limit (maximum or minimum) mating face dimensions for connector set configurations are given in Figure 1, Figure 2 and Figure 3, which use 90 projection method according to ISO128. The applicable configuration, arrangement, style, variants, climatic category an
33、d assessment levels shall be specified in the DS. Type: type LSH coupling mechanism: locked latch push-pull configurations: plug/adaptor/plug plug/socket. Arrangements: kit pigtail patchcord. Environmental categories: The DS-writer shall select the appropriate BDS for chosen environmental category.
34、Assessment levels: level A level B level C.EN 186270:1997 6 BSI 04-1999 REF. MIN. MAX. Note REF. MIN. MAX. Note A B C D E F G H I J 4,45 0,67 2,4995 6,29 8,88 2,79 2,98 5,98 4,98 4,18 1) K L M N O P Q R S T 45 6,10 12,05 0,90 1,20 1,25 11,05 5,00 4,10 36 2) NOTES: 1) The optical alignment feature ma
35、y be a rigid bore or a resilient alignment sleeve. When a resilient alignment sleeve is used, the dimensional requirement may be replaced by a gauge insertion and/or retention requirement in the DS. 2) Dimension M shown in Figure 1 is given for a plug endface when not mated. It is noticed that a fer
36、rule is movable by a certain axial compression force with direct contacting endfaces and therefore dimension M is variable. This dimension after contacting shall be equal or less than 12 mm. Figure 1 Plug mating face single limit dimensionsEN186270:1997 BSI 04-1999 7 2.2 Reference components Referen
37、ce component(s), if required, shall be defined in the DS. 2.3 Gauges Gauge(s), if required, shall be defined in the DS. 2.4 Mounting requirements Mounting and alignment requirements shall be specified in the DS. 3 Quality assessment procedures The quality assessment procedures of EN186000-1, section
38、 3 apply. 3.1 Qualification approval 3.1.1 Qualification by fixed sample procedure When specified, the fixed sample procedure shall be in accordance with 3.3.1. of EN186000-1. REF. MIN. MAX. Note REF. MIN. MAX. Note A B C D E F G H I J 2,5000 6,31 8,9:2 2,81 3,02 6,00 5,00 4,20 4,40 0,65 1) K L M N
39、O P Q R S T 11,10 5,10 4,50 1,20 36 45 6,00 12,00 0,85 1,18 2) NOTES: 1) The optical alignment feature may be a rigid bore or a resilient alignment sleeve. When a resilient alignment sleeve is used, the dimensional requirement may be replaced by a gauge insertion and/or retention requirement in the
40、DS. 2) Dimension M shown in Figure 1 is given for a plug endface when not mated. It is noticed that a ferrule is movable by a certain axial compression force with direct contacting endfaces and therefore dimension M is variable. This dimension after contacting shall be equal or less than12mm. Figure
41、 2 Adaptor mating face single limit dimensionsEN 186270:1997 8 BSI 04-1999 The relevant BDS contains the minimum test schedules and performance requirements for qualification by the fixed sample procedure. The complete set of mandatory test schedules and performance requirements shall be specified i
42、n the DS. Qualification approval will be granted for the complete range of variants submitted as structurally similar upon successful completion of the tests. 1) Sample size The sample size for qualification by fixed sample procedure shall be as specified in the DS. The specimens shall be variants f
43、or the smallest fibre core diameter specified in the DS. Following completion of the group “0” tests, the specimens for the other groups shall be randomly selected from the group “0” specimens. In addition, the following specimens shall be provided: one specimen of each plug variant to be qualified
44、by structural similarity to the one used for group“0”, one specimen of each alignment device variant to be qualified by structural similarity to the one used for group “0”, one specimen of each housing variant to be qualified by structural similarity to the one used for group “0”. Following completi
45、on of the group “0” tests, the specimens for the other groups shall be randomly selected from the group “0” specimens. 2) Preparation of specimens Test specimens for kit arrangements shall be terminated using the smallest fibre core diameter specified in the DS. The fibre/cable type and lengths to b
46、e used for all arrangements shall be as specified in the DS. 3) Testing The tests shall be conducted in the order given, using the method specified. The specimens shall satisfy the performance requirements of the DS. The additional variant specimens selected shall be tested to all of the group “0” t
47、ests and shall meet the requirements of the DS. 3.1.2 Qualification by lot-by-lot and periodic procedure When specified, the lot-by-lot plus periodic qualification procedure shall be in accordance with 3.3.2. of EN186000-1 (see 3.2.1. and 3.2.2. for test schedules). Qualification approval will be gr
48、anted for the complete range of variants submitted as structurally similar upon successful completion of the tests. 3.2 Quality conformance inspection 3.2.1 Lot-by-Lot inspection The minimum mandatory inspection schedules for lot-by-lot inspection are specified in the relevant BDSs. The complete set
49、 of mandatory test schedules and performance requirements shall be specified in the DS. 3.2.2 Periodic inspection The minimum mandatory periodic test schedules are specified in the relevant BDS. The complete set of mandatory test schedules and performance requirements shall be specified in the DS. Periodic inspection approval will be granted for the complete range of variants submitted as structurally similar upon successfu
