BS EN 3475-808-2002 Aerospace series - Cables electrical aircraft use - Test methods - Cross-talk《航空航天系列 飞行器用电缆 试验方法 交叉谈话》.pdf

《BS EN 3475-808-2002 Aerospace series - Cables electrical aircraft use - Test methods - Cross-talk《航空航天系列 飞行器用电缆 试验方法 交叉谈话》.pdf》由会员分享，可在线阅读，更多相关《BS EN 3475-808-2002 Aerospace series - Cables electrical aircraft use - Test methods - Cross-talk《航空航天系列 飞行器用电缆 试验方法 交叉谈话》.pdf（8页珍藏版）》请在麦多课文档分享上搜索。

1、BRITISH STANDARD AEROSPACE SERIES BS EN 3475-808:2002 Cables, electrical, aircraft use Test methods Part 808: Cross-talk The European Standard EN 3475-808:2002 has the status of a British Standard ICS 49.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 3475-808:2002 Th

2、is British Standard, having been 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 25 June 2002 BSI 25 June 2002 ISBN 0 580 39895 1 National foreword This British Standard is the o

3、fficial English language version of EN 3475-808:2002. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Subcommittee, ACE/6/2, Aerospace Cables, which has the responsibility to: A list of organizations repr

4、esented 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 Corresp

5、ondence 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

6、of itself 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 promulga

7、te them 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

8、 Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3475808 June2002 ICS49.060 Englishversion AerospaceseriesCables,electrical,aircraftuseTest methodsPart808:Crosstalk SriearospatialeCbleslectriquesusage aronautiqueMthodesdessaisPartie808:Diaphonie LuftundRaumfahrtElektrischenLei

9、tungenfrLuftfahrt VerwendungPrfverfahrenTeil808:Nebensprechen ThisEuropeanStandardwasapprovedbyCENon1March2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbi

10、bliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifi

11、edtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEE

12、FORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3475808:2002EEN3475808:2002(E) 2 Foreword Thisdocument(EN3475808:2002)hasbe

13、enpreparedbytheEuropeanAssociationofAerospace Manufacturers(AECMA). AfterenquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStanda

14、rdshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyDecember2002,andconflictingnationalstandardsshallbe withdrawnatthelatestbyDecember2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesa

15、reboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN3475808:2002(E) 3 1 Scope Thisstandardspecifiesmethodsformeasuringthecrosstalk

16、ofacable(multicorecables). ItshallbeusedtogetherwithEN3475100. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subse

17、quentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN3475100 AerospaceseriesCables,electrical,aircraftuseTestmethodsPart100:General 3 Preparationofspecim

18、ens Theseshallbestripped,preparedandconnectedtothemeasuringdevices. 4 Methods Unlessotherwiseindicatedintheproductstandard,themeasurementshallbetakenona10mcablesection, connectedasshowninfigures1and2. Figure1CrosstalkmeasurementMeasurementinasymmetricmode 2EN3475808:2002(E) 4 Figure2Crosstalkmeasure

19、mentMeasurementinsymmetricmode Eachpairshallbeconnectedateachendtoaresistorequivalenttothespecifiedcharacteristicimpedance Z o ofthepair. Connectionsshallbeasshortaspossiblesoastominimizetheinteractionoftheends. TheemittivepairissuppliedbyageneratorGatafrequencyofwhichtheoutputimpedanceisascloseas p

20、ossibletothecharacteristicimpedance Z o ofthepairs. Measure,usinghighinputimpedancevoltmeter(e.g.oscilloscope): thevoltageattheinputoftheemittivepair U 1 ; thevoltageatthegeneratorsideofapairnexttotheemittivepair(nearendcrosstalk) U 2 ; thevoltageattheendremotefromthegeneratorofapairnexttotheemittiv

21、epair(farendcrosstalk) U 3 . Nearendcrosstalkattenuationisequalto 20 2 1 lg U U ,indecibels Farendcrosstalkattenuationisequalto 20 1 lg 3 U U ,indecibels 5 Requirement Thenearendandfarendcrosstalkattenuationvaluesshallbeabovethevaluesspecifiedintheproduct standard,inthebandindicated. 2BS EN 3475-808

22、:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Sta

23、ndards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while usi

24、ng this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers a

25、utomatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI webs

26、ite at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and

27、international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: info

28、bsi-. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-.

29、 Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- Further information about BSI is available on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the

30、 publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior writte

31、n permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.