1、BRITISH STANDARD BS EN 61300-2-39: 1997 IEC 61300-2-39: 1997 Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part2: Tests Section39: Susceptibility to external magnetic fields The European Standard EN61300-2-39:1997 has the status of a British Standar
2、d ICS33.180.20BSEN61300-2-39:1997 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of theStandards Board and comes into effect on 15 July1997 BSI09-1999 ISBN 0 580 27598 1 National foreword This British Standard is
3、the English language version of EN61300-2-39:1997. It is identical with IEC61300-2-39:1997. The UK participation in its preparation was entrusted by Technical Committee EPL/86, Fibre optics, to Subcommittee EPL/86/2, Interconnecting devices and passive components, which has the responsibility to: ai
4、d enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UKinterests informed; monitor related international and European developments and promulgate them in the UK. A list of organizati
5、ons represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that Annex ZA lists normative references to international publications with their corresponding European publications. The British Standards which implement these interna
6、tional or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions o
7、f 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 comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2
8、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 since publication Amd. No. Date CommentsBSEN61300-2-39:1997 BSI 09-1999 i Contents Page Natio
9、nal foreword Inside front cover Foreword 2 Text of EN61300-2-39 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN61300-2-39 April1997 ICS33.180.20 English version Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part2-39: Tests Susceptibili
10、ty to external magnetic fields (IEC61300-2-39:1997) Dispositifs dinterconnexion et composants passifs fibres optiques Mthodes fondamentales dessais et de mesures Partie2-39: Essais Sensibilit aux champs magntiques externes (CEI61300-2-39:1997) Lichtwellenleiter Verbindungselemente und passive Bautei
11、le Grundlegende Prf- und Meverfahren Teil2-39: Prfungen Strempfindlichkeit magnetischer Fremdfelder (IEC61300-2-39:1997) This European Standard was approved by CENELEC on1997-03-11. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin
12、g 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 ve
13、rsions (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
14、of Austria, Belgium, Denmark, Finland, France, Germany, 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 Europisch
15、es Komitee fr Elektrotechnische Normung Central Secretariat: 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.EN61300-2-39:1997EEN61300-2-39:1997 BSI 09-1999 2 Foreword The text of document86B/843/
16、FDIS, future edition1 of IEC61300-2-39, prepared by 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 EN61300-2-39 on1997-03-11. The following dates were fixed: Annexes designate
17、d “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC61300-2-39:1997 was approved by CENELEC as a European Standard without any modification. Contents Page Forewor
18、d 2 1 General 3 2 General description 3 3 Apparatus 3 4 Procedure 4 5 Details to be specified 5 Annex ZA (normative) Normative references tointernational publications with their corresponding European publications 6 Figure 1 Measurement set-up 4 latest date by which the ENhas to be implemented atnat
19、ional level by publication of an identical national standard or by endorsement (dop)1997-12-01 latest date by which the national standards conflicting with the EN haveto be withdrawn (dow)1997-12-01EN61300-2-39:1997 BSI 09-1999 3 1 General 1.1 Scope and object This part of IEC1300 describes the test
20、 to measure a components susceptibility to a change in optical performance when an external magnetic field is exerted on it. 1.2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this part of IEC1300. At the time
21、of publication, the edition indicated was valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC1300 are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. Members of IEC and IS
22、O maintain registers of currently valid International Standards. IEC1300-1:1995, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part1: General and guidance. 2 General description The test should be performed in a laboratory shielded from external mag
23、netic fields or where the ambient magnetic intensity and direction are known. As the direction of an external magnetic field is indeterminate with respect to the direction of a component in an actual system, it is essential to specify measurement procedures which can control both the intensity and d
24、irection of the external magnetic field being exerted on the component. For the purpose of simplifying the illustration, this procedure only gives a measuring method for configuration A devices, i.e.devices containing integral fibre optic pigtails without connectors (asspecified in the generic speci
25、fications). 3 Apparatus The apparatus consists of the following elements: 3.1 Source S This unit consists of an optical emitter, its fibre pigtail (if any), and associated drive electronics. It may include mechanical or electrical modulation of the optical power. It could, for example, be a laser or
26、 a spectrally broadband source combined with an interference filter or monochromator. The precise characteristics shall be compatible with the measurement requirements, and shall be specified in the detail specification, including: power output; peak wavelength; spectral width; coherent or incoheren
27、t; power output stability; pigtail fibre type (if any). 3.2 Excitation unit E This unit consists of a passive optical system which transmits the optical power to the component with the required launch conditions. Unless otherwise specified, the launch conditions shall be in accordance with annex B o
28、f IEC1300-1. It shall be compatible with the component being measured, and shall be specified in the detail specification. 3.3 Detector D This unit consists of an optical detector, its fibre pigtail (if any), and associated detection electronics. The detector element, or the core of the fibre which
29、is pigtailed to it, shall have a diameter and acceptance angle which is equal to or exceeds respectively the maximum core diameter and numerical aperture of the fibre on the component output. The precise characteristics shall be compatible with the measurement requirements, and shall be specified in
30、 the detail specification, including: maximum sensitivity; linearity; peak and range of wavelength sensitivity; amount of power reflected; range of wavelength sensitivity; stability; pigtail fibre type (if any).EN61300-2-39:1997 4 BSI 09-1999 3.4 Temporary joint TJ This is a method, device, or mecha
31、nical fixture fortemporarily aligning two fibre ends into a reproducible, low loss joint. It may, for example, beaprecision v-groove vacuum chuck, micromanipulator, or a fusion or mechanical splice. A suitable refractive index matching material shall preferably be used. The stability of the temporar
32、y joint shall be compatible with the measurement precision required. 3.5 Fibre lengths L 1 , L 2 Where fibre lengths are indicated in the illustrations accompanying the test methods in this standard, these lengths shall be specified in the detail specification. 3.6 External magnetic field unit (M) w
33、ith controller The dimension of the test area within the magnetic field unit shall be such that the presence of the device under test DUT does not modify the magnetic field and the test conditions. The external magnetic induction B in this area shall be a uniform distribution and be adjusted continu
34、ally by the controller. The external magnetic induction shall be fixed at the level specified in the detail specification. The direction of the magnetic field can be changed, if applicable. Pigtail fibres shall conveniently pass in and out of the test area. A suitable clamping apparatus shall be use
35、d to maintain the DUT securely in position during the test. 4 Procedure 4.1 Configure the test set-up as shown in Figure 1. 4.2 After ensuring the quality of the TJs and the stability of the system making and maintaining the external magnetic induction B=0, measure and record the power level, P 0 .
36、4.3 Regulate the controller of the electromagnet to ensure the external magnetic induction, B, and its direction, F, are as specified in the detail specification. To minimize test error, the fibre ends at the TJ as well as those at the D shall not be displaced during the test. Measure and record the
37、 power level P 1 (F). 4.4 Maintain a constant condition as in4.3 except that the direction of the external magnetic induction, B, is reversed (i.e.in direction R) by the controller. Measure and record power level P 1 (R). 4.5 The variation in attenuation caused by the external magnetic induction, B,
38、 is given by the following formula: %a = a(F)a(R) When the external magnetic induction, B, is in the direction F, a(F) is given by: a(F)=10log (P 1 (F)/P 0 ) When the external magnetic induction, B, is in the direction R, a(R) is given by: a(R)=10log (P 1 (R)/P 0 ) Figure 1 Measurement set-upEN61300
39、-2-39:1997 BSI 09-1999 5 5 Details to be specified Optical source S type, wavelength, and stability Launch conditions Detector D type, spectral response, dynamic range Fibre type and length L 1 , L 2 , and L 3 Pre-conditioning procedure Performance requirements Deviations from test procedure Level,
40、direction, stability, uniformity and duration of the external magnetic induction.EN61300-2-39:1997 6 BSI 09-1999 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates by dated or undated reference, p
41、rovisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in
42、it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). NOTEWhen an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC
43、1300-1 1995 Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part1: General and guidance blankBS EN 61300-2-39: 1997 IEC 61300-2-39: 1997 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body respo
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