1、 INTERNATIONAL STANDARD IEC62272-2 First edition2007-03 Digital radio mondiale(DRM)Part 2:Digital radio in the bands below 30 MHz Methods of measurement for DRM transmitters Reference number IEC 62272-2:2007(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED
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8、9 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 IEC62272-2 First edition2007-03 Digital radio mondiale(DRM)Part 2:Digital radio in the bands below 30 MHz Methods of measurement for DR
9、M 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 Electrotechnical Commission,3,rue d
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11、NGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62272-2 IEC:2007(E)CONTENTS FOREWORD.3 1 Scope.5 2 Normative references.5 3 Terms,definitions and abbreviations.6 3.1 Terms and definitions.6 3.2 Abbreviations.6 4 General conditions of operation.7 5 General conditions of
12、 measurement.7 5.1 Input and output measurement arrangements.7 5.2 Temperature and humidity.8 5.3 Conditions for primary power supply.8 5.4 Output power.8 6 General characteristics.8 6.1 Output power.8 6.2 Frequency.9 7 Transmission performance characteristics.11 7.1 Spurious emissions.11 7.2 Out-of
13、-band emissions(spectrum mask).12 7.3 Modulation error ratio(MER).13 7.4 Bit error ratio(BER).13 8 Protection against atmospheric discharge.14 9 Acoustic noise.15 10 Safety.15 Annex A(informative)Measuring arrangements.16 Annex B(informative)Out-of-band emission limits for DRM transmitters.18 Annex
14、C(informative)Additional measuring details.20 Figure 1 Spectrum occupancy for 9 kHz channels.10 Figure 2 Spectrum occupancy for 10 kHz channels.10 Figure 3 PRBS generator.14 Figure A.1 Arrangement A.16 Figure A.2 Arrangement B.16 Figure A.3 Arrangement C.17 Figure A.4 Arrangement D.17 Figure B.1 Out
15、-of-band emission limits (upper half only of a symmetrical spectrum mask shown).18 Table B.1 Out-of-band emission limits.18 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62272-2 IEC:2007(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION
16、_ DIGITAL RADIO MONDIALE(DRM)Part 2:Digital radio in the bands below 30 MHz Methods of measurement for DRM transmitters FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National Committees).The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other activities,IEC