1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-617:2002 Elements of electrical and optical connection Test methods Part 617: Optical elements Temperature cycling The European Standard EN 2591-617:2002 has the status of a British Standard ICS 49.060 BS EN 2591-617:2002 This British Standard, having bee
2、n prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 July 2002 BSI 12 July 2002 ISBN 0 580 40046 8 National foreword This British Standard is the official English language versio
3、n of EN 2591-617:2002. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Subcommittee ACE/6/10, Aerospace Fibre optic systems and equipment, which has the responsibility to: A list of organizations represen
4、ted on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Corresponde
5、nce Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. 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 i
6、tself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate t
7、hem in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd
8、 No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN2591617 June2002 ICS49.060 Englishversion AerospaceseriesElementsofelectricalandopticalconnection TestmethodsPart617:OpticalelementsTemperature cycling SriearospatialeOrganesdeconnexionlectriqueet optiqueMthodesdessaisPartie617:Orga
9、nesoptiques Cycledetemprature LuftundRaumfahrtElektrischeundoptische VerbindungselementePrfverfahrenTeil617:Optische ElementeZyklischeTemperaturbeanspruchung ThisEuropeanStandardwasapprovedbyCENon8February2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatethecondition
10、sforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversio
11、ninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxem
12、bourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENna
13、tionalMembers. Ref.No.EN2591617:2002EEN2591617:2002(E) 2 Foreword Thisdocument(EN2591617:2002)hasbeenpreparedbytheEuropeanAssociationofAerospace Manufacturers(AECMA). AfterenquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociation
14、sandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyDecember2002,andconflictingnationalstandardsshallbe withdrawnatthelatestbyDecember2002. Acco
15、rdingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,Switzerlanda
16、ndtheUnitedKingdomEN2591617:2002(E) 3 1 Scope Thisstandardspecifiesamethodofcheckingtheabilityofopticalconnectionelements(includingpermanent connections)andfibreopticcouplerstowithstandtemperaturecycling. ItshallbeusedtogetherwithEN2591100. 2 Normativereferences ThisEuropeanStandardincorporatesbydat
17、edorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevis
18、ion.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN2591100 AerospaceseriesElementsofelectricalandopticalconnectionTestmethods Part100:General 1) EN25916101 AerospaceseriesElementsofelectricalandopticalconnectionsTestmethods Part6101:OpticalelementsVisualexamination EN25916
19、02 AerospaceseriesElementsofelectricalandopticalconnectionsTestmethods Part602:OpticalelementsVariationofattenuationandopticaldiscontinuity 3 Preparationofspecimens 3.1 Specimenshallbefittedwithnormalaccessoriesandterminatedinaccordancewiththeproduct standard.Cavitieswithunterminatedcontactsshallhav
20、efillerplugsfitted(whereapplicable). 3.2 Unlessotherwiseindicatedinthetechnicalspecificationthefollowingdetailsshallbespecified: typeandlengthofcable/fibre; maximumpermittedvariationofattenuation; high/lowtemperatures; durationofextremetemperaturesandratesofchange; numberofcycles. 4 Apparatus LightL
21、aunchSystem(LLS)asdefinedinEN2591100 LightDetectorSystem(LDS)asdefinedinEN2591100 Climaticchambercapableoftemperaturecontrolof 3C 1) PublishedasAECMAPrestandardatthedateofpublicationofthisstandardEN2591617:2002(E) 4 5 Method 5.1 Initialmeasurements Measurethevariationofattenuation(EN2591602,methodA)
22、continuouslythroughoutthetest; Placethespecimeninclimaticchamber(attimet 0 ) BringthetemperatureleveltoT A valueduringperiod(t 1 - t 0 ) MaintainatT A temperatureduringperiod(t 2 - t 1 ) ChangethetemperaturetoT B duringperiod(t 3 - t 2 ) MaintainaT B temperatureduringperiod(t 4 - t 3 ) Changethetemp
23、eraturetoambienttemperatureduringperiod(t 5 - t 4 ) Maintainatambienttemperatureduringperiod(t 6 - t 5 ).Thesephasesconstituteonebasiccycle(see figure1)whoseparametersaregivenintheproductspecification Unlessotherwisespecifiedintheproductstandard: rateoftemperaturevariation:5C/min; ( t 2 - t 1 )=(t 4
24、 - t 3 )=(t 6 - t 5 )=30min. 5.2 Finalmeasurementsandrequirements Thespecimenshallbeexaminedinaccordancewiththetest:EN25916101Visualexamination Figure1Basiccycle t 0 t 1 t 2 t 3 t 4 t 5 t 6 T A T B ambiant temperatureblankBS EN 2591-617:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Stand
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