IEC_61108-4-2004.pdf

INTERNATIONAL STANDARD IEC61108-4 First edition2004-07 Maritime navigation and radiocommunication equipment and systems Global navigation satellite systems(GNSS)Part 4:Shipborne DGPS and DGLONASS maritime radio beacon receiver equipment Performance requirements,methods of testing and required test results Reference number IEC 61108-4:2004(E)Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Publication numberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editionsThe IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,thebase publication incorporating amendment 1 and the base publication incorporatingamendments 1 and 2.Further information on IEC publicationsThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating tothis publication,including its validity,is available in the IEC Catalogue ofpublications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publicationsThe on-line catalogue on the IEC web site(http:/www.iec.ch/searchpub/cur_fut.htm)enables you to search by a variety of criteria including text searches,technicalcommittees and date of publication.On-line information is also available onrecently issued publications,withdrawn and replaced publications,as well ascorrigenda.IEC Just Published This summary of recently issued publications(http:/www.iec.ch/online_news/justpub/jp_entry.htm)is also available by email.Please contact the CustomerService Centre(see below)for further information.Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-INTERNATIONAL STANDARD IEC61108-4 First edition2004-07 Maritime navigation and radiocommunication equipment and systems Global navigation satellite systems(GNSS)Part 4:Shipborne DGPS and DGLONASS maritime radio beacon receiver equipment Performance requirements,methods of testing and required test results IEC 2004 Copyright-all rights reserved No part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch W For price,see current cataloguePRICE CODE Commission Electrotechnique InternationaleInternational Electrotechnical Commission Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2 61108-4 IEC:2004(E)CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms,definitions and abbreviations.7 3.1 Definitions.7 3.2 Abbreviations.7 4 Performance requirements.7 4.1 Introduction.7 4.2 Composition.8 4.3 Functional requirements.8 4.4 Protection.9 4.5 Integrity.9 4.6 Interfaces.10 4.7 IEC 61162-1,IEC 61162-2 implementation.10 4.8 IEC 61162-3 implementation.10 4.9 Display and control.10 4.10 Installation.10 5 Technical characteristics.11 5.1 Carrier frequency.11 5.2 Frequency tolerance.11 5.3 Message types.11 5.4 Data transmission rate.11 5.5 Dynamic range.11 5.6 Maximum bit error ratio.11 5.7 Receiver selectivity and stability.11 5.8 Automatic frequency selection.12 5.9 Protection ratios.12 6 Methods of testing and required test results.13 6.1 General conditions of measurement and test signals.13 6.2 Operational tests.14 6.3 Protection of external connections.18 6.4 Integrity.18 6.5 Technical tests.18 6.6 Additional functionality tests.20 Annex A(normative)Simulation of noise situations for the test of shipborne DGPS maritime radio beacon receiver equipment.21 A.1 Parameters describing noise.21 A.2 Noise models.22 A.3 Test procedures.26 Annex B(informative)Methodology for measuring WER.27 B.1 Recording the RTCM data stream.27 B.2 Analysing the RTCM data stream.27 B.3 Caution.27 Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permi