1、STD-BSI BS EN bL300-3-27-ENGL 1777 lbZYbb7 ObliOLbO 473 BRITISH STANDARD Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3. Examinations and measurements Section 27. Measurement method for the hole location of a multiway connector Plug The Euro
2、pean Standard EN 61300-3-27 : 1997 has the status of a British Standard ICs 33.180.20 BS EN 1997 1997 61300-3-27 : EC 61300-3-27 : NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STD-BSI BS EN bL300-3-27-ENGL 1997 Lb24bb9 ObllOLbL 30T Amd.No. BS EN 61300-3-27 : 1997 Date Text
3、affected National foreword This British Standard is the English ianguage version of EN 61300-327 : 1997. It is identical with IEC 61300-%27 : 1997. The UK participation in its preparation was entrusted by Technical Committee EPLB6, Fibre optics, to Subcommittee EPU86/2, Interconnecting devices and p
4、assive components, which has the responsibility to: - aid enquirers to understand the kxt; - present to the responsible internationallEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed - monitor related international and European devel
5、opments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, ali IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a perio
6、d of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards nody include an annex which lists normative references to international publications with th
7、eir 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 facility of the BSI Standards Electron
8、ic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. This British Standard, having been prepar
9、ed under the direction of the Electrotechnicai Sector Board, was published under the authoris of the Standards Board and comes into effect on 15 September 1997 Q BSI 1997 ISBN O 680 27707 O EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 6 I 300-3-27 July 1997 ICs 33.1 80.20 English version Fib
10、re optic interconnecting devices and passive components Basic test and measurement procedures Part 3-27: Examinations and measurements - Measurement method for the hole location of a multiway connector plug (IEC 61 300-3-27:1997) Dispositifs dinterconnexion et composants passifs fibres optiques Mtho
11、des fondamentales dessais et de mesures Partie 3-27: Examens et mesures Mthode de mesure pour la localisation du trou sur une fiche de connecte-ur multivoies (CE1 61 300-3-27: 1997) Lichtwellenieiter - Verbhdungselemente und passive Bauteile - Grundlegende Prf- und Meverfahren Teil 3-27: Untersuchun
12、gen und Messungen - Memethode zur Bestiminung der Steckposition eines Mehrfachsteckverbinders (IEC 61 300-3-27: 1997) This European Standard was approved by CENELEC on 1997-03-1 1. CENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving
13、 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 or to any CENELEC member. This European Standard exists in three official ver
14、sions 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 official versions. CENELEC members are the national electrotechnical committees of
15、 Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway. Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnicai Standardization Comit Europen de Normalisation Electrotechnique Europisches
16、 Komitee fr Elektrotechnische Normung Centrai Secretariat: rue de Starsart 35, 8 - 1050 Brussds 1997 CENELEC - Ali rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61300-3-27:1997 E Page 2 EN 61300-3-27 : 1997 Foreword The text of document 86B/8
17、49/FDIS, future edition 1 of IEC 61300-3-27, prepared by SC 868, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61 300-3-27 on 1997-03-1 1. The following dates were fixed: - late
18、st date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement with the EN have to be withdrawn - latest date by which the national standards conflicting (dop) 1998-02-01 (dw) 1998-02-01 Endorsement notice The text of the Internatio
19、nal Standard IEC 61 300-3-27: 1 997 was approved by CENELEC as a European Standard without any modification. Page 3 EN 61300-3-27 : 1997 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS - BASIC TEST AND MEASUREMENT PROCEDURES - Part 3-27: Examinations and measurements - Measurement method
20、for the hole location of a multiway connector plug 1 General 1.1 Scope and object The object of this part of IEC 61300 is to measure the hole location of a multiway connector plug which has multiple fibre holes for arraying fibres and two guide holes for positioning two alignment pins. The following
21、 dimensions on the endface of the plug shall be accurately measured to satisfy the specified mechanical and optical performance of the connector: - distance between two guide-hole centres L; - position deviation of each fibre-hole centre Pi. 1.2 General description The distance L is defined as the d
22、istance between the centre of one guide hole and the centre of the other guide hole. The position deviation Pi is defined as the position deviation of an actual fibre-hole centre from the intended fibre-hole centre. The intended fibre-hole centre is a point separated by a designated distance from th
23、e plug mating centre on the line between the two guide-hole centres (see figure 1). These dimensions are measured by a non-contact measurement instrument using an image processing technique. Designed fibre-hole centre Plug mating centre: mid point of L Plug i Guide-hole I i I ! ! i ! i ! i i ! L ! !
24、- i l i ;- ! Designated histance I - IEC 48997 L = Distance between two pin-hole centres P, = Position deviation of each fibre-hole centre Figure 1 - Definition of distance i and position deviation Pi Page 4 EN 61300-3-27 : 1997 2 Apparatus The apparatus consists of the following elements: - Microsc
25、ope with CCD camera (CCD) - Image processing unit I - Monitor M - Light source capable of offering diffuse illumination LAMP - Translation stage S - Stage-driving unit SD - Distance-measuring unit DM - Computer CPU. 3 Procedure In the following method, calculations on hole location are carried out s
26、equentially for each hole location measurement. The calculations may be performed at the end of all the measurements. 3.1 Configure the measurement set-up as shown in figure 2. Monitor (M) I - image processing unit (I) A - Microscope with CCD camera (CCD) Distance-measuring Translation unit (DM) II
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