1、INTERNATIONALSTANDARDIEC62028First edition2002-03General methods of measurementfor digital television receiversReference numberIEC 62028:2002(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numberingAs from 1 January 1997
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8、CATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC62028First edition2002-02General methods of measurementfor digital television receivers IEC 2002 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanic
9、al,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.chXFor price,see current cata
10、loguePRICE CODECommission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62028 IEC:2002(E)CONTENTSFOREWORD.61Scope.72Normative references.73Terms,definitions a
11、nd abbreviations.83.1Terms and definitions.83.2Abbreviations.84Conceptual block diagram of digital television receivers.114.1General.114.1.1Types of receivers.114.1.2Peripheral connectors.114.2Basic common block diagram.114.2.1General.114.2.2Satellite broadcasting system.114.2.3Terrestrial broadcast
12、ing system.114.2.4CATV system.125General notes on measurements.125.1General conditions.125.2Test signals.125.2.1Video test signals.125.2.2Audio test signals.125.2.3Data test signals.125.3RF(radio frequency)television signal.135.3.1General.135.3.2Reference modulation.135.3.3Signal level.135.4Measurin
13、g systems and test instruments.135.4.1Measuring system.135.4.2Base band test signal generators.135.4.3Service data generator.135.4.4Encoders.135.4.5Modulator.145.4.6BER analyzer.145.5Standard measuring conditions.145.5.1Standard input signal levels.145.5.2Standard output signal levels.145.5.3Standar
14、d receiver settings.145.5.4General conditions.145.6Standard viewing conditions.146Assessment of received picture and sound quality.156.1Subjective tests of basic received quality.156.1.1Objectives.156.1.2Methodology.157Methods of measurement of RF signals.177.1General.177.2Method of measurement of R
15、F signal level.20LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62028 IEC:2002(E)3 7.2.1Introduction.207.2.2Equipment required.207.2.3Connection of the equipment.207.2.4Measurement procedure.207.2.5Presentation of the results.217.3Met
16、hod of measurement of carrier to noise ratio(C/N).217.3.1Introduction.217.3.2Equipment required.217.3.3Connection of the equipment.227.3.4Measurement procedure.227.3.5Presentation of the results.227.4Method of measurement of Bit Error Rate(BER).227.4.1Introduction.227.4.2Equipment required.237.4.3Connection of the equipment.237.4.4Measurement procedure.237.4.5Presentation of the results.247.5Method of measurement of BER versus Eb/No.247.5.1Introduction.247.5.2Equipment required.247.5.3Connection