1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58components Basic test and measurement proceduresPart 3-18: Examinations and measurements Keying acc
2、uracy of an angled endface connectorThe European Standard EN 61300-3-18:2006 has the status of a British StandardICS 33.180.20Fibre optic interconnecting devices and passive BRITISH STANDARDBS EN61300-3-18:2006BS EN 61300-3-18:2006This British Standard was published under the authority of the Standa
3、rds Policy and Strategy Committee on 31 July 2006 BSI 2006ISBN 0 580 49020 3request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International S
4、tandards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Stand
5、ard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last
6、issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizations represented on this subcommittee can be obtained on aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change,
7、and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.National forewordThis British Standard is the official English language version of EN 61300-3-18:2006. It is identical with IEC 61300-3-18:2005. It supersedes BS EN 61300-3-18:1997 w
8、hich is withdrawn.The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Interconnecting devices and passive components, which has the responsibility to: EUROPEAN STANDARD EN 61300-3-18 NORME EUROPENNE EUROPISCHE NORM May 2006 CEN
9、ELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved wor
10、ldwide for CENELEC members. Ref. No. EN 61300-3-18:2006 E ICS 33.180.20 Supersedes EN 61300-3-18:1997English version Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-18: Examinations and measurements - Keying accuracy of an angled endface conn
11、ector (IEC 61300-3-18:2005) Dispositifs dinterconnexion et composants passifs fibres optiques -Mthodes fondamentales dessais et de mesures Partie 3-18: Examens et mesures -Prcision du dtrompage dun connecteur face terminale avec angle (CEI 61300-3-18:2005) Lichtwellenleiter - Verbindungselemente und
12、 passive Bauteile - Grundlegende Prf- und Messverfahren Teil 3-18: Untersuchungen und Messungen - Genauigkeit der Auenzentrierung eines Steckverbinders mit schrger Endflche (IEC 61300-3-18:2005) This European Standard was approved by CENELEC on 2006-03-01. CENELEC members are bound to comply with th
13、e 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 Central Secretariat o
14、r 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 Central Secretariat has the same status as the offic
15、ial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania,
16、Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 86B/2215/FDIS, future edition 2 of IEC 61300-3-18, prepared by SC 86B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC paralle
17、l vote and was approved by CENELEC as EN 61300-3-18 on 2006-03-01. This European Standard supersedes EN 61300-3-18:1997. Specific changes from EN 61300-3-18:1997 are the clause structure and the figure layout throughout the whole document. The following dates were fixed: latest date by which the EN
18、has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of t
19、he International Standard IEC 61300-3-18:2005 was approved by CENELEC as a European Standard without any modification. _ EN 61300-3-18:2006 2 CONTENTS 1 Scope and object4 2 Normative references .4 3 General description 4 4 Apparatus 5 5 Procedure 6 6 Details to be specified 7 EN 61300-3-18:2006 3 FI
20、BRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 3-18: Examinations and measurements Keying accuracy of an angled endface connector 1 Scope and object This part of IEC 61300 describes a method to measure the angular rotational misalignment of the fe
21、rrule mating surface of an angled endface connector and its design orientation angle with respect to its key. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references
22、, the latest edition of the referenced document (including any amendments) applies. ISO 2538: Geometrical Product Specifications (GPS) Series of angles and slopes on prisms 3 General description The angle is defined as the angle between two planes. One plane passes through the axis of the ferrule an
23、d the axis of symmetry of the key of the angled endface connector plug (plane A). The second plane passes through the axis of the ferrule and the normal to the ferrule mating surface at the axis of the ferrule or in case of convex polished ferrules, the normal to the tangent plane at the axis of the
24、 ferrule endface, plane B (see Figure 1). Plane A Plane B Axis of symmetry of key Key Ferrule Axis of ferrule Normal to ferrule mating surface IEC 2534/05 Figure 1 Definition of angle EN 61300-3-18:2006 4 In this method, a visible light He-Ne beam aligned along the ferrule axis is reflected by the f
25、errule mating surface to impinge upon a screen as a spot pattern. The screen is normal to and surrounding the ferrule axis. In the case of a flat polished ferrule endface, the spot pattern is typically a small visible, approximately uniformly illuminated circle showing little additional divergence o
26、f the laser beam (see Figure 2). In the case of a convex polished ferrule endface, the pattern is typically a small ring (Airy disk) located at the centre of a large visible circle of beam diverged from the original laser beam (see Figure 2). This small ring results from Fraunhofer diffraction of th
27、e He-Ne beam reflected from the convex ferrule endface containing a fibre or fibre hole as a centrally located aperture. Flat polished ferrule Convex polished ferrule Circle Circle Ring Airy disk Figure 2 Typical spot pattern The angle is determined by measuring the angular positioning of the centre
28、 of the visible circle or ring with respect to the orientation of the key. This measurement procedure is corrected for centering by referencing two reflections (corresponding to two keyed positions of the connector holder located at 180 with respect to each other) to the orientation of the key. The
29、measurement results will be affected by the surface finish of the ferrule mating surface. This surface shall be polished to a sufficient level to form a well-defined specular reflection of the He-Ne beam. 4 Apparatus The apparatus consists of the following elements: a connector holder consisting of
30、a V-groove or precision alignment sleeve and two slots wherein the connector key can be fitted before and after the connector rotation of 180 (see Figure 3) (according to ISO 2538, the preferred angle for a V-groove is 108); IEC 2535/05EN 61300-3-18:2006 5 Slot Slot Key Ferrule IEC 2536/05 Figure 3
31、Example of connector holder a screen perpendicular to the axis of the V-groove or precision sleeve; a He-Ne laser whose beam is aligned to be coincident with the axis of the V-groove or precision sleeve and thus impinges on the ferrule mating surface. 5 Procedure The procedure consists of the follow
32、ing steps. a) Place the ferrule in the V-groove or precision sleeve, fitting the connector key into one slot of the connector holder. b) Illuminate the ferrule mating surface with the He-Ne beam. c) Observe the beam spot pattern on the screen and adjust the position of the ferrule to obtain maximum
33、visibility in the interference pattern (see Figure 4). Slot Key Ferrule Slot Connector holder with V-groove or precision sleeve and two slots L (See NOTE) He-Ne laser Screen Spot pattern IEC 2537/05 NOTE For convex polished ferrules, a suitable length L may be between 20 cm and 50 cm, and may be rec
34、orded in the test results. Figure 4 Example of set-up for measuring angle EN 61300-3-18:2006 6 d) Record the position of the centre of the beam spot pattern. e) Rotate the connector 180. Place the ferrule in the V-groove or precision sleeve, fitting the connector key into the second slot. Record the
35、 second position of the centre of the beam spot pattern. f) Find the displacement line passing through two centres of the beam spot patterns before and after the connector rotation on the screen. Also find the reference line on the screen and in parallel with a line passing through two centres of th
36、e slots of the connector holder. g) The angle is the angle between the displacement line and the reference line. h) The angular misalignment is the difference between this measured and the design target for . 6 Details to be specified The following details, as applicable, shall be specified in the r
37、elevant specification: surface roughness of ferrule mating surface; clearance between key and slot; allowable angular misalignment. _ EN 61300-3-18:2006 7 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced d
38、ocuments are indispensable for the application of this document. 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 modifica
39、tions, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year ISO 2538 1)Geometrical Product Specifications (GPS) - Series of angles and slopes on prisms EN ISO 2538 20032)1)Undated reference. 2)Valid edition at date of issue. EN 61300-3-18:2006 8 blankBS EN BSI389 Chiswic
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