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1、 INTERNATIONAL STANDARD IEC 62273-1 First edition 2007-02 Methods of measurement for radio transmitters Part 1: Performance characteristics of terrestrial digital television transmitters Reference number IEC 62273-1:2007(E) Copyright International Electrotechnical Commission Provided by IHS under li
2、cense with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 01:18:21 MSTNo reproduction or networking permitted without license from IHS -,-,- Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For ex
3、ample, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The 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, the base publication incorporating amendment 1 and the base public
4、ation incorporating amendments 1 and 2. Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication, including its validity, is availab
5、le in the IEC Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is a
6、lso available from the following: IEC Web Site (www.iec.ch) Catalogue of IEC publications The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also
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8、ormation. Customer Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 Copyright International Electrotechnical Commission Provided by IHS under l
9、icense with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 01:18:21 MSTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IEC 62273-1 First edition 2007-02 Methods of measurement for radio transmitters Part 1: Performance
10、 characteristics of terrestrial 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 publi
11、sher. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch W For price, see current catalogue PRICE CODE Commission Electrotechnique Internationale Internatio
12、nal Electrotechnical Commission Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 01:18:21 MSTNo reproduction or networking permitted without license from IHS -,-,- 2 62273-1 IEC:2
13、007(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 primary power supply9 4.3 Output power.9 4.4 Test load.9 4.5 Auxiliary equipment.9 4.6 Test equipment and t
14、est 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 emission14 5.5 Occupied bandwidth15 5.6 Power consumption.16 6 Transmitted signal characteristics.16 6.1 Intermodulation (shoulders).16 6.2 Modulation error ration
15、(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 noise20 9 Safety.20 Annex A (normative) Eye-height characteristics .21 Annex B (normative) Characteristic frequency 22 Annex C (normative) Frequency
16、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 (normative) Modulation error ratio (MER) measurement36 Annex H (normative) Bit error rate (BER)
17、measurement38 Bibliography39 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 01:18:21 MSTNo reproduction or networking permitted without license from IHS -,-,- 62273-1 IEC:2007(E
18、) 3 Figure 1 Measuring set-up for output power.12 Figure 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 Measurement23 Figure B.2 Frequency spectrum analysis24 Figure D.1 Measurement26 Figure D.2 Relative co
19、upling 27 Figure D.3 Coupling attenuation.27 Figure E.1 Attenuation curve29 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 Measurement32 Figure F.2 Shoulder attenuation.33 Figure F.3 Analys
20、er setting 33 Figure F.4 Measurement system of intermodulation .34 Figure F.5 Measurement of intermodulation at the upper side of the channel .35 Figure G.1 Measurement .36 Figure H.1 Measurement38 Table 1 Measurement parameters for out-of-band emission .15 Table 2 Measurement parameters for occupie
21、d bandwidth.16 Table 3 Equivalent noise bandwidth.18 Table A.1 Electrical characteristic specifications for ASI link21 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 01:18:21 MS
22、TNo reproduction or networking permitted without license from IHS -,-,- 4 62273-1 IEC:2007(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ METHODS OF MEASUREMENT FOR RADIO TRANSMITTERS Part 1: Performance characteristics of terrestrial digital television transmitters FOREWORD 1) The International Ele
23、ctrotechnical 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
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25、ational Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardizatio
26、n (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representat
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31、roperty damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited
32、in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying
33、any or all such patent rights. International Standard IEC 62273-1 has been prepared by IEC technical committee 103: Transmitting equipment for radio communication The text of this standard is based on the following documents: FDIS Report on voting 103/63/FDIS 103/65/RVD Full information on the votin
34、g for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The list of all the publications of the IEC 62273 series, under the general title Methods of measurement for rad
35、io transmitters, can be found on the IEC website. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 01:18:21 MSTNo reproduction or networking permitted without license from IHS -,-
36、,- 62273-1 IEC:2007(E) 5 The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfir
37、med, withdrawn, replaced by a revised edition, or amended. A bilingual edition of this document may be issued at a later date. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 01:
38、18:21 MSTNo reproduction or networking permitted without license from IHS -,-,- 6 62273-1 IEC:2007(E) METHODS OF MEASUREMENT FOR RADIO TRANSMITTERS Part 1: Performance characteristics of terrestrial digital television transmitters 1 Scope This part of IEC 62273 gives the conditions for measuring the
39、 performance parameters of terrestrial digital transmitters and for facilitating the comparison of measurements which are carried out by different personnel. It contains details of specially selected methods for determining the most important performance parameters of digital transmitters. The measu
40、rement methods described apply to a limited number of performance parameters, i.e. those which can give rise to ambiguous interpretation due to the use of different methods and conditions. They are neither restrictive nor mandatory: measurements can be chosen for each particular case. If necessary,
41、additional tests can be carried out but they shall comply with those standards which have been established by other study groups, subcommittees of the IEC or other international or suitably accredited organizations. No limits have been assigned to quantify acceptable ranges of performance parameters
42、. These are judged to be properly included in the technical specifications for individual transmitters; however, the terms and the manner used to quantify them should ideally be those described in a future IEC publication. The measurement methods described in this standard are intended for type appr
43、oval tests. However they can equally well apply to acceptance tests measurements and quality control tests either in factories or on site. Test signals are used to measure performance parameters for both digital and analogue terrestrial transmitters. Their electronic characteristics and their associ
44、ated performance parameters are widely understood. The test signals are measured after they have gone through the transmitter equipment to determine if their degradation is within the required quality criteria. This standard does not go into any detail regarding MPEG 2 signals or DVB processes nor d
45、oes it deal with digital signal processing. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any ame
46、ndments) applies. IEC 60215, Safety requirements for radio transmitting equipment IEC 60244-1, Methods of measurement for radio transmitters Part 1: General characteristics for broadcast transmitters ITU-R Recommendation BT.1306-3, Error correction, data framing, modulation and emission methods for
47、digital terrestrial television broadcasting. ITU-R:2004, Radio Regulations Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 01:18:21 MSTNo reproduction or networking permitted wit
48、hout license from IHS -,-,- 62273-1 IEC:2007(E) 7 ETS 30 0744, Digital video broadcasting Framing structure, channel coding and modulation for digital terrestrial television. ETSI 101 290, Digital video broadcasting (DVB) Measurement guidelines for DVB system 3 Terms, definitions and abbreviations For the purposes of this document, the following terms, definitions and abb