1、BRITISH STANDARD BS EN 61300-3-27: 1997 IEC 61300-3-27: 1997 Fibre optic interconnecting devices and passive components Basictest and measurement procedures Part 3: Examinations and measurements Section 27: Measurement method for the hole location of a multiway connector plug The European Standard E
2、N61300-3-27:1997 has the status of a British Standard ICS 33.180.20BSEN61300-3-27:1997 This British Standard, having been prepared under the directionof the ElectrotechnicalSector Board,was published under theauthorityof the StandardsBoardand comes intoeffecton 15September1997 BSI 10-1999 ISBN 0 580
3、 27707 0 National foreword This British Standard is the English language version of EN61300-3-27:1997. It is identical with IEC61300-3-27:1997. The UK participation in its preparation was entrusted by Technical Committee EPL/86, Fibre optics, to Subcommittee EPL/86/2, Interconnecting devices and pas
4、sive 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 European development
5、s and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. From1January1997, all IEC publications have the number60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. For a period of time du
6、ring 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 normally include an annex which lists normative references to international publications with their corr
7、esponding 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 Electronic C
8、atalogue. 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 obligations. Summary of pages This document
9、comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages2 to6 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 inside front cover. Amendments issued sinc
10、e publication Amd. No. Date CommentsBSEN61300-3-27:1997 BSI 10-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 61300-3-27 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61300-3-27 July 1997 ICS 33.180.20 English version Fibre optic interconnecting devic
11、es 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 61300-3-27:1997) Dispositifs dinterconnexion et composantspassifs fibres optiques Mthodesfondamentales dessais et de mes
12、ures Partie 3-27: Examens et mesures Mthodedemesure pour la localisation dutrousur une fiche de connecteur multivoies (CEI 61300-3-27:1997) Lichtwellenleiter Verbindungselemente undpassive Bauteile Grundlegende Prf- und Meverfahren Teil3-27:Untersuchungen und Messungen Memethode zur Bestimmung der S
13、teckposition eines Mehrfachsteckverbinders (IEC 61300-3-27:1997) This European Standard was approved by CENELEC on 1997-03-11. 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 stand
14、ard 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 versions (English, French, German). A version in any othe
15、r 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 Austria, Belgium, Denmark, Finland, France, Germany,
16、 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 Secreta
17、riat: 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 61300-3-27:1997 EEN61300-3-27:1997 BSI 10-1999 2 Foreword The text of document86B/849/FDIS, future edition1 of IEC61300-3-27, prepared by
18、 SC86B, Fibre optic interconnecting devices and passive components, of IEC TC86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN61300-3-27 on1997-03-11. The following dates were fixed: Endorsement notice The text of the International Standard IEC61300-3
19、-27:1997 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword 2 1 General 3 1.1 Scope and object 3 1.2 General description 3 2 Apparatus 3 3 Procedure 4 4 Details to be specified 6 Figure 1 Definition of distance L and position deviation P i 3 Figure 2 Exam
20、ple of set-up for connectors hole location measurement 4 Figure 3 Example of guide-hole location measurement 5 Figure 4 Determination of intended fibre-hole centre 5 Figure 5 Example of fibre-hole location measurement 6 latest date by which the EN has to be implemented at national level by publicati
21、on of an identical national standard or by endorsement (dop) 1998-02-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1998-02-01EN61300-3-27:1997 BSI 10-1999 3 1 General 1.1 Scope and object The object of this part of IEC61300 is to measure the hole l
22、ocation of a multiway connector plug which has multiple fibre holes for arraying fibres and two guide holes for positioning two alignment pins. The following dimensions on the endface of the plug shall be accurately measured to satisfy the specified mechanical and optical performance of the connecto
23、r: distance between two guide-hole centres L; position deviation of each fibre-hole centre P i . 1.2 General description The distance L is defined as the distance between the centre of one guide hole and the centre of the other guide hole. The position deviation P iis defined as the position deviati
24、on 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 the plug mating centre on the line between the two guide-hole centres (seeFigure 1). These dimensions are measured by a non-contact measurement ins
25、trument using an image processing technique. 2 Apparatus The apparatus consists of the following elements: Microscope 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 D
26、M Computer CPU. Figure 1 Definition of distance L and position deviation P iEN61300-3-27:1997 4 BSI 10-1999 3 Procedure In the following method, calculations on hole location are carried out sequentially for each hole location measurement. The calculations may be performed at the end of all the meas
27、urements. 3.1 Configure the measurement set-up as shown in Figure 2. 3.2 Energize the measurement set-up for a sufficient time to achieve stability. 3.3 Mount the plug appropriately on the translation stage S so that the guide-hole axis of the plug is perpendicular to the X, Y-plane of the stage. 3.
28、4 Illuminate the guide holes and the fibre holes. 3.5 Record the original position of the stage using the distance-measuring unit DM. Set (X, Y) co-ordinate on the monitor screen using the image processing unit (I). When moving the stage, the origin of (X, Y) co-ordinate on the monitor screen change
29、s by the distance corresponding to the stage movement. 3.6 Move the translation stage so that the image of target guide hole can be observed on the monitor. 3.7 Record (X, Y) positions of more than three points on a circumference of one guide-hole image. Calculate the centre position (X p1 , Y p1 )
30、of the circle obtained by fitting a circle to the data points (seeFigure 3). Figure 2 Example of set-up for connectors hole location measurementEN61300-3-27:1997 BSI 10-1999 5 3.8 Repeat steps3.6 and3.7 for the other guide-hole. Calculate the centre position (X p2 , Y p2 ) of the other circle. 3.9 T
31、he distance between two guide-hole centres L is calculated by the following equation: 3.10 Next, determine the plug mating centre (X c , Y c ) and each intended fibre-hole centre (X di , Y di ) from the following calculation. The plug mating centre (X c , Y c ) is calculated as the mid point between
32、 two guide-hole image centres, (X p1 , Y p1 ) and (X p2 , Y p2 ). The intended fibre-hole centre (X di , Y di ) is defined as a point separated by a designated distance from the plug mating centre (X c , Y c ). The intended fibre-hole centre should be on the axis of the guide-hole centres (seeFigure
33、 4). 3.11 Move the translation stage so that the image of target fibre-hole can be observed on the monitor. 3.12 Record (X, Y) positions of more than three points on a circumference of each fibre hole image. Calculate the centre position (X fi , Y fi ) of the circle obtained by fitting a circle to t
34、he data points (seeFigure 5). Figure 3 Example of guide-hole location measurement Figure 4 Determination of intended fibre-hole centreEN61300-3-27:1997 6 BSI 10-1999 3.13 The position deviation of each fibre-hole centre P iis calculated by the following equation. 4 Details to be specified The follow
35、ing details, as applicable, shall be specified in the detail specification: Video resolution Distance measurement resolution Ambient temperature Allowable distance between two guide-hole centres L and position deviation of each fibre-hole centreP i . Figure 5 Example of fibre-hole location measureme
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