EN 61300-2-39-1997 en Fibre Optic Interconnecting Devices and Passive Components Basic Test and Measurement Procedures Part 2-39 Tests - Susceptibility to External Magnetic Fields《.pdf

1、BRITISH STANDARD BS EN 1997 1997 61300-2-39 : IEC 61300-2-39 : Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2. Tests Section 39. Susceptibility to external magnetic fields The European standard EN 61300-239 : 1997 has the status of a British

2、 Standard ICs 33.180.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 61300-239 : 1997 Amd. No. Date This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authorily of the Standards Board and comes

3、 into effect on 15 July 1997 Text affected O BSI 1997 ISBN O 580 27698 1 National foreword This British Standard is the English language version of EN 61300-239 : 1997. It is identical with EC 61300-239 : 1997. The UK participation in its preparation was entmsted by Technical Committee EPM6, Fibre o

4、ptics, to Subcommittee EPU86/2, Interconnecting devices and passive components, which has the responsibility to: - aid enquirem to understand the text; - present to the responsible intedonal/European committee any enquiries on the inteqretation, or proposals for change, and keep the UK interests inf

5、ormed; - monitor related intedonal and European developments and promulgate themintheuK. A list of organizations represented on this subcommittee can be obtained on request to its secrehy. Cross-references Attention is dram to the fact that annex ZA lists normative references to international public

6、ations with their corresponding European publications. The British Standards which implement these internationai 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 Standar

7、ds Electronic 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 nont cover, the EN title page, pages 2 to 7, a blank page, an inside back cover and a back cover. .L v; EUROPEAN ST

8、ANDARD NORME EUROPENNE EUROPISCHE NORM EN 6 1 300-2-39 April 1997 ICs 33.1 80.20 English version Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-39: Tests - Susceptibility to external magnetic fields (IEC 61 300-2-39:1997) Dispositifs dintercon

9、nexion et composants passifs fibres optiques Mthodes fondamentales dessais et de mesures Teil 2-39: Prfungen Partie 2-39: Essais - Sensibilit aux champs magntiques externes Fremdfelder Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prf- und Meverfahren Strempfindlichkeit

10、 magnetischer (CE1 61 300-2-39: 1 997) (IEC 61 300-2-39: 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 this European Standard the status of a national standa

11、rd 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 other

12、 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 electrotechnicai committees of Austria, Belgium, Denmark, Finland, France, Germany,

13、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

14、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 61 300-2-39:1997 E Page 2 EN 61300-2-39 : 1997 Foreword The text of document 868/843/FDIS, future edition 1 of IEC 61300-2-39, prepare

15、d 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 61 300-2-39 on 1997-03-1 1. The following dates were fixed: - latest date by which the EN has to be implemented at nat

16、ional level by publication of an identical national standard or by endorsement (dp) 1997-1 2-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (daw) 1997-1 2-01 Annexes designated “normative“ are part of the body of the standard. In this standard, annex ZA

17、 is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 61 300-2-39:1997 was approved by CENELEC as a European Standard without any modification. Zb24bb9 Ob2bOb7 594 Page 3 EN 61300-2-39 : 1997 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE C

18、OMPONENTS - BASIC TEST AND MEASUREMENT PROCEDURES - Part 2-39: Tests - Susceptibility to external magnetic fields 1 General 1 .i Scope and object This part of IEC 1300 describes the test to measure a components susceptibility to a change in optical performance when an external magnetic field is exer

19、ted on it. 1.2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this part of IEC 1300. At the time of publication, the edition indicated was valid. All normative documents are subject to revision, and parties to

20、agreements based on this part of IEC 1300 are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 1300-1: 1995, fibre optic interconnecting d

21、evices and passive components - Basic test and measurement procedures - Part I: General and guidance 2 General description The test should be performed in a laboratory shielded from external magnetic fields or where the ambient magnetic intensity and direction are known. As the direction of an exter

22、nal 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 direction of the external magnetic field being exerted on the component. For the purpose of simplifying the

23、 illustration, this procedure only gives a measuring method for configuration A devices, .e. devices containing integral fibre optic pigtails without connectors (as specified in the generic specifications). 3 Apparatus The apparatus consists of the following elements: Page 4 EN 61300-2-39 : 1997 3.1

24、 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 a spectrally broadband source combined with an interference filter or monoch

25、romator. 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 incoherent; power output stability; pigtail fibre type (if any). 3.2 Excitation unit E

26、 This unit consists of a passive optical system which transmits the optical power to the component with the required launch conditions. Unless othewise specified, the launch conditions shall be in accordance with annex B of IEC 1300-1. It shall be compatible with the component being measured, and sh

27、all 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 is pigtailed to it, shall have a diameter and acceptance angle which is equal

28、 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 the detail specification, including: maximum sensitivity; linearity; peak an

29、d range of wavelength sensitivity; amount of power reflected; range of wavelength sensitivity; stability; pigtail fibre type (if any). 3.4 Temporary joint TJ This is a method, device, or mechanical fixture for temporarily aligning two fibre ends into a reproducible, low loss joint. It may, for examp

30、le, be a precision 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 temporary joint shall be compatible with the measurement precision required. 3.5 Fibre lengths Li , L2 Where fibr

31、e lengths are indicated in the illustrations accompanying the test methods in this standard, these lengths shall be specified in the detail specification. = lb24bb Ob2bUb9 3b7 Page 5 EN 61300-2-39 : 1997 3.6 External magnetic field unit (Ad) with controller The dimension of the test area within the

32、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 continually by the controller. The external magnetic induction s

33、hall 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 used to maintain the DUT securely in position during the tes

34、t. 4 Procedure 4.1 Configure the test Set-up as shown in figure 1. Controller E4 TJ c+ Figure 1 - Measurement Set-up 4.2 maintaining the external magnetic induction B=O, measure and record the power level, Po. After ensuring the quality of the TJs and the stability of the system making and 4.3 Regul

35、ate the controller of the electromagnet to ensure the external magnetic induction, 8, 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 power le

36、vel Pl(F). 4.4 Maintain a constant condition as in 4.3 except that the direction of the external magnetic induction, B, is reversed (.e. in direction R) by the controller. Measure and record power level PI(R). 4.5 following formula: The variation in attenuation caused by the external magnetic induct

37、ion, B, is given by the Aa = a(F) - a(R) When the external magnetic induction, B, is in the direction F, a(F) is given by: When the external magnetic induction, B, is in the direction R, a(R) is given by: Page 6 EN 61300-2-39 : 1997 5 Details to be spec Fiei - Optical source S type, wavelength, and

38、stability - Launch conditions - Detector D type, spectral response, dynamic range - Fibre type and length LI, L2, and L3 - P re-cond i tion i ng procedure - Performance requirements - Deviations from test procedure - Level, direction, stability, uniformity and duration of the external magnetic induc

39、tion. H Lb24bb7 Ob2b07L TL5 Page 7 EN 61300-2-39 : 1997 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative refere

40、nces 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 it by amendment or revision. For undated references the l

41、atest edition of the publication referred to applies (including amendments). NOTE: When an international publication has been modified by common modifications, indicated by (mod), the relevant ENRID applies. Year Title EN/HD - Year Publication - IEC 1300-1 1995 Fibre optic interconnecting devices an

42、d passive components - Basic test and measurement procedures Part 1: General and guidance BS EN 1997 1997 61300-2-39 : IEC 61300-2-39 : BSI 389 Chiswic, High Road London w4 4AL BSI - British Standards Institution !SI is the independent national body responsible for preparing British Standards. It re

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