1、 INTERNATIONAL STANDARD IEC62273-1 First edition2007-02 Methods of measurement for radio transmitters Part 1:Performance characteristics of terrestrial digital television transmitters Reference number IEC 62273-1:2007(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONL
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8、:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONAL STANDARD IEC62273-1 First edition2007-02 Methods of measurement for radio transmitters Part 1:Performance characteristics of terrestri
9、al digital television transmitters IEC 2007 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 Electrotechnica
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11、N Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62273-1 IEC:2007(E)CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms,definitions and abbreviations.7 4 General conditions of measurement.9 4.1 Temperature and humidity.9 4.2 Conditions for
12、 primary power supply.9 4.3 Output power.9 4.4 Test load.9 4.5 Auxiliary equipment.9 4.6 Test equipment and test signals.10 5 General characteristics.10 5.1 Frequency.10 5.2 Output power.11 5.3 Spurious domain emission.14 5.4 Out-of-band domain emission.14 5.5 Occupied bandwidth.15 5.6 Power consump
13、tion.16 6 Transmitted signal characteristics.16 6.1 Intermodulation(shoulders).16 6.2 Modulation error ration(MER).17 6.3 Bit error ratio(BER).17 6.4 Equivalent noise degradation.18 6.5 Phase noise.19 7 Protection against atmospheric discharge.20 8 Acoustic noise.20 9 Safety.20 Annex A(normative)Eye
14、-height characteristics.21 Annex B(normative)Characteristic frequency.22 Annex C(normative)Frequency drift.25 Annex D(normative)Attenuation of the measuring coupler.26 Annex E(normative)Spurious emissions/out-of-band emissions.28 Annex F(normative)DVB-T shoulder attenuation measurement.32 Annex G(no
15、rmative)Modulation error ratio(MER)measurement.36 Annex H(normative)Bit error rate(BER)measurement.38 Bibliography.39 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62273-1 IEC:2007(E)3 Figure 1 Measuring set-up for output power.12 Fi
16、gure 2 Measuring set-up for spurious emission,out-of-band emission and bandwidth.15 Figure A.1 Transmitter eye diagram for jitter.21 Figure B.1 Measurement.23 Figure B.2 Frequency spectrum analysis.24 Figure D.1 Measurement.26 Figure D.2 Relative coupling.27 Figure D.3 Coupling attenuation.27 Figure E.1 Attenuation curve.29 Figure E.2 Out-of-band and spurious emissions.30 Figure E.3 Output filter.30 Figure E.4 High-frequency spectrum.31 Figure E.5 Superimpose curve.31 Figure F.1 Measurement.32 F
