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1、BRITISH STANDARD BS EN 180000:1996 Harmonized system of quality assessment for electronic components Generic specification: Fibre optic attenuators The European Standard EN 180000:1995 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:43:51 GMT+00:00 2006
2、, Uncontrolled Copy, (c) BSI BS EN 180000:1996 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1996 BSI 02-2000 The following BSI references relate to the
3、work on this standard: Committee reference EPL/86 announced in BSI News September 1995 ISBN 0 580 25210 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee EPL/86, Fibre optics, upon which the following bodies were represen
4、ted: BECCAMA (BEAMA Electrical Cable and Conductor Accessory Manufacturers Association) British Approvals Service for Cables British Cable Makers Confederation British Telecommunications plc Department of Trade and Industry (National Physical Laboratory) ERA Technology Ltd. Federation of the Electro
5、nics Industry Fibreoptic Industry Association (FIA) Ministry of Defence National Supervising Inspectorate (BSI PC) Optical Sensors Collaborative Association Society of Cable Television Engineers Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun
6、Oct 29 10:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 180000:1996 BSI 02-2000i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 1800005 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:43:51 GMT+00
7、:00 2006, Uncontrolled Copy, (c) BSI BS EN 180000:1996 ii BSI 02-2000 National foreword This British Standard has been prepared by Technical Committee EPL/86, and is the English language version of EN 180000:1995, Generic specification: Fibre optic attenuators, published by the Electronic Components
8、 Committee (CECC) of the European Committee for Electrotechnical Standardization (CENELEC). Cross-references Publication referred toCorresponding British Standard CECC 00114-I:1990aBS EN 100114 Rule of procedure 14. Quality assessment procedures BS EN 100114-1/Issue 2:1994 Approval of manufacturers
9、and other organizations CECC 00114-II:1992bBS CECC 00114 Rule of procedure 14. Quality assessment procedures BS CECC 00114-2:1995 Qualification approval of electronic components CECC 00109:1974BS CECC 00109:1991 Rule of Procedure 9 Certified test records IEC 68-2-3:1969BS 2011 Environmental testing
10、BS 2011-2.1 Tests BS 2011-2.1 Ca:1977 Test Ca. Damp heat, steady state IEC 68-2-5:1975BS 2011-2.1 Sa:1977 Test Sa. Simulated solar radiation at ground level IEC 68-2-6:1982BS 2011-2.1 Fc:1983 Test Fc. Vibration (sinusoidal) IEC 68-2-10:1984BS 2011-2.1J:1989 Test J and guidance. Mould growth IEC 68-2
11、-11:1981BS 2011-2.1 Ka:1982 Test Ka. Salt mist IEC 68-2-13:1983BS 2011-2.1 M:1984 Test M. Low air pressure IEC 68-2-14:1984BS 2011-2.1 N:1985 Test N. Change of temperature IEC 68-2-17:1978BS 2011-2.1 Q:1981 Test Q. Sealing IEC 68-2-30:1980BS 2011-2.1 Db:1981 Test Db and guidance. Damp heat, cyclic (
12、12 + 12 hour cycle) IEC 68-2-9:1975Part 2.2 Guidance BS 2011-2 Sa:1977 Test Sa. Guidance for solar radiation IEC 68-1:1982BS EN 60068 Environmental testing BS EN 60068-1:1995 General and guidance BS EN 60068-2 Test methods IEC 68-2-1:1974cBS EN 60068-2-1:1993 Tests A. Cold IEC 68-2-2:1974BS EN 60068
13、-2-2:1993 Tests B. Dry heat IEC 68-2-7:1983BS EN 60068-2-7:1993 Test Ga and guidance. Acceleration, steady state IEC 68-2-27:1972dBS EN 60068-2-27:1993 Environmental testing procedures. Tests. Test Ea and guidance. Shock IEC 68-2-29:1968eBS EN 60068-2-29:1993 Environmental testing procedures. Tests.
14、 Test Eb and guidance. Bump IEC 695-2-2:1980fBS 6458 Fire hazard testing for electrotechnical products BS 6458-2 Test methods BS 6458-2.2:1993 Needle-flame test a Superseded by EN 100114-1:1994. b Superseded by CECC 00114-II:1994. c Superseded by IEC 68-2-1:1990. d Superseded by IEC 68-2-27:1987. e
15、Superseded by IEC 68-2-29:1987. f Superseded by IEC 695-2-2:1991. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 180000:1996 BSI 02-2000iii A British Standard does not purport to include all the necessary provisions of a contract. Use
16、rs of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Publication referred toCorresponding British Standard IEC 825:1984aBS EN 60825 Safety of laser products BS EN 60825-1:1994 Equipment cl
17、assification, requirements and users guide BS EN 60825-2:1995 Safety of laser products. Safety of optical fibre communication systems BS EN 186000 Harmonized system of quality assessment for electronic components. Generic specification. Connector sets for optical fibres and cables CECC 86000bBS EN 1
18、86000-1:1994 Requirements, test methods and qualification approval procedures IEC 73:1987cBS EN 60073:1993 Specification for coding of indicating devices and actuators by colours and supplementary means IEC 129BS 308 Engineering drawing practice BS 308-2:1985 Recommendations for dimensioning and tol
19、erancing of size ISO 1101BS 308-3:1990 Recommendations for geometrical tolerancing ISO/R 286-1BS EN 20286 ISO system of limits and fits BS EN 20286-1:1993 ISO system of limits and fits. Bases of tolerances, deviations and fits ISO 370:1975BS 2856:1973 Precise conversion of inch and metric sizes on e
20、ngineering drawings a Superseded by IEC 825:1989. b Superseded by EN 186000-1:1993. c Superseded by IEC 73:1991. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, the EN title page, pages 2 to 78, an inside back cover and a back cover. This standard has be
21、en updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldu
22、n, na, Sun Oct 29 10:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 180000 June 1995 Supersedes CECC 80000:1994 English version Generic specification: Fibre optic attenuators Spcification gnrique: Attnuateurs de fibres optiques Fachgrundspezifik
23、ation: Lichtwellenleiter (LWL) Dmpfungsglieder This European Standard was approved by CENELEC on 1995-03-06. 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 standard without any al
24、teration. 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 language made by
25、 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, Greece, Iceland,
26、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 Secretariat: rue de Stass
27、art 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN 180000:1995 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 180000:1995 BSI 02-2000 2 Foreword At the request of Working Group CLC/TC CECC/WG 27, the text of
28、 CECC 80000:1994, Issue 1, was submitted to the formal vote for conversion into a European Standard. It was approved by CENELEC as EN 180000 on 1995-03-06. The following date was fixed: Contents Page Foreword2 Section 1. General 1.1Scope5 1.2Related documents5 1.3Definitions6 Section 2. Requirements
29、 2.1Classification9 2.1.1Type9 2.1.2Style9 2.1.3Variant10 2.1.4Climatic category11 2.1.5Assessment level11 2.2Minimum mandatory test sequence12 2.3Documentation12 2.3.1Symbols12 2.3.2Specification system12 2.3.3Drawings13 2.3.4Measurements14 2.3.5Test data sheets14 2.3.6Instructions for use14 2.4Des
30、ign and construction14 2.4.1Materials14 2.4.2Workmanship14 2.5Quality15 2.6Performance15 2.7Identification and marking15 2.7.1Variant identification number15 2.7.2Component marking15 2.7.3Package marking15 2.8Packaging15 Section 3. Quality assessment procedures 3.1Primary stage of manufacture16 3.2S
31、tructural similarity16 3.3Qualification approval procedures16 3.3.1Fixed sample procedure16 3.3.2Lot-by-lot and periodic procedure16 3.3.3Sample size16 3.3.4Preparation of specimens16 3.3.5Qualification testing17 3.3.6Qualification failures17 3.3.7Maintenance of qualification approval17 3.3.8Qualifi
32、cation report17 3.4Quality conformance inspection17 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-03-01 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:43:51 GMT+00:00 2006, Uncontrolled Copy
33、, (c) BSI EN 180000:1995 BSI 02-20003 Page 3.4.1Lot-by-lot inspection17 3.4.2Periodic inspection18 3.5Certified records of released lots18 3.6Delayed deliveries18 3.7Delivery release before completion of group B tests18 3.8Alternative test methods19 3.9Unchecked parameters19 Section 4. Measurement a
34、nd environmental test procedures 4.1Standard conditions20 4.2Specimen20 4.3Cleaning of optical surfaces20 4.4Measurement procedures20 4.4.1Visual inspection20 4.4.2Dimensions and mass21 4.4.3Examination of product21 4.4.4Flammability22 4.4.5Attenuation value22 4.4.6Return loss29 4.4.7Spectral depend
35、ence of attenuation value and return loss32 4.4.8Polarization dependence of attenuation value and return loss35 4.4.9Modal dependence of attenuation value and return loss35 4.4.10 Change in transmitted optical power35 4.4.11 Maximum input power38 4.5Environmental test procedures39 4.5.1Vibration39 4
36、.5.2Effectiveness of fibre or ferrule retention41 4.5.3Static load42 4.5.4Pulling43 4.5.5Torsion43 4.5.6Strength of coupling mechanism44 4.5.7Bending moment45 4.5.8Bump45 4.5.9Shock46 4.5.10 Crush resistance47 4.5.11 Axial compression48 4.5.12 Impact49 4.5.13 Acceleration50 4.5.14 Drop51 4.5.15 Coup
37、ling proof torque52 4.5.16 Mould growth53 Page 4.5.17 Cold54 4.5.18 Dry heat55 4.5.19 Damp heat (steady state)56 4.5.20 Climatic sequence57 4.5.21 Condensation59 4.5.22 Change of temperature60 4.5.23 Sealing (sealed attenuators)61 4.5.24 Sealing (water immersion)62 4.5.25 Sealing (hermetic)63 4.5.26
38、 Salt mist64 4.5.27 Dust65 4.5.28 Industrial atmosphere (sulphur dioxide)66 4.5.29 Low air pressure67 4.5.30 Solar radiation68 4.5.31 Nuclear radiation68 4.5.32 Mechanical endurance69 4.5.33 High temperature endurance70 4.5.34 Resistance to solvents and contaminating fluids70 4.5.35 Cable nutation72
39、 Annex A (informative) Size measurements74 Annex B (informative) Summary of definitions from IEC Publications74 Figure 1 Configuration A9 Figure 2 Configuration B10 Figure 3 Configuration C10 Figure 4 Configuration D10 Figure 5 Cut-back method Step a25 Figure 6 Cut-back method Step b26 Figure 7 Cut-
40、back method Measurement26 Figure 8 Substitution method Step a26 Figure 9 Substitution method Measurement27 Figure 10 Configuration B27 Figure 11 Configuration C27 Figure 12 Insertion method 3 Measurement28 Figure 13 Return loss Step a29 Figure 14 Return loss Measurement30 Figure 15 Return loss Confi
41、guration A Measurement30 Figure 16 Return loss Configuration B Measurement30 Figure 17 Return loss Configuration C Measurement31 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 180000:1995 4 BSI 02-2000 Page Figure 18 Selective diagram32
42、Figure 19 Cut-back method Step a33 Figure 20 Substitution method Step a33 Figure 21 Insertion method 3 Configuration B34 Figure 22 Insertion method 3 Configuration C34 Figure 23 Insertion method 3 Configuration A35 Figure 24 Measurement set up36 Figure 25 Configuration B37 Figure 26 Configuration C3
43、8 Figure 27 Test set up38 Figure 28 Impact set up49 Figure 29 Drop test set up52 Figure 30 Dust test set up65 Figure 31 Cable nutation test set up72 Table 1 Example of a typical attenuator classification9 Table 2 Climatic category11 Table 3 Minimum mandatory test sequence12 Table 4 Tree level CECC s
44、pecification structure13 Table 5 List of measurement procedures20 Table 6 Attenuation value measurement methods24 Table 7 Wavelength selective element32 Table 8 List of environmental test procedures40 Table 9 Vibration severities41 Table 10 Bump preferred severities46 Table 11 Shock preferred severi
45、ties47 Table 12 Crush resistance preferred severities47 Table 13 Axial compression preferred severities48 Table 14 Impact preferred severities50 Table 15 Acceleration preferred severities51 Table 16 Drop preferred severities52 Table 17 Coupling proof torque preferred severities53 Table 18 Mould grow
46、th preferred severities54 Table 19 Cold preferred severities55 Table 20 Dry heat preferred severities56 Table 21 Damp heat preferred severities57 Page Table 22 Climatic sequence, number of cycles58 Table 23 Change of temperature preferred severities61 Table 24 Air pressure sealing preferred severiti
47、es62 Table 25 Water sealing preferred severities62 Table 26 Salt mist preferred severities64 Table 27 Dust preferred severities66 Table 28 Industrial atmosphere preferred severities66 Table 29 Low air pressure preferred severities67 Table 30 Solar radiation preferred severities68 Table 31 Mechanical
48、 endurance preferred severities69 Table 32 High temperature preferred severities70 Table 33 Resistance to solvents preferred severities71 Table 34 Cable nutation preferred severities73 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 18000
49、0:1995 BSI 02-20005 Section 1. General 1.1 Scope This specification applies to the family of fibre optic attenuators. These have all of the following general features: they are passive in that they contain no optoelectronic or other transducing elements; they have two ports for the transmission of optical power and attenuate the transmitted power in a fixed or variable fashion; the ports are