IEC 62272-2:2007

Digital radio mondiale (DRM) - Part 2: Digital radio in the bands below 30 MHz - Methods of measurement for DRM transmitters

IEC 62272-2:2007 describes the methods of measurement to assess the performance characteristics of digital modulated radio transmitters in the bands below 30 MHz for sound and/or data broadcasting in the LF, MF and HF bands, and to facilitate the comparison of measurements which are carried out by different personnel. This bilingual version (2012-05) corresponds to the monolingual English version, published in 2007-03.

Digital radio mondiale (DRM) - Partie 2: Radiodiffusion numérique sur des bandes inférieures à 30 MHz - Méthodes de mesure applicables aux émetteurs DRM

La CEI 62272-2:2007 décrit les méthodes permettant de mesurer les performances des émetteurs radioélectriques à modulation numérique transmettant du son et/ou des données sur les bandes inférieures à 30 MHz, sur les ondes courtes, moyennes, et longues, et de faciliter la comparaison de mesures réalisées par différentes personnes. La présente version bilingue (2012-05) correspond à la version anglaise monolingue publiée en 2007-03.

General Information

• Status: Published
• Publication Date: 12-Mar-2007
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.060.20 - Receiving and transmitting equipment
• Technical Committee: TC 103 - Transmitting and receiving equipment for radiocommunication
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jul-2007
• Completion Date: 13-Mar-2007

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 62272-2
First edition
2007-03
Digital radio mondiale (DRM) –
Part 2:
Digital radio in the bands below 30 MHz –
Methods of measurement for DRM transmitters
Reference number
Publication numbering
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INTERNATIONAL IEC
STANDARD 62272-2
First edition
2007-03
Digital radio mondiale (DRM) –
Part 2:
Digital radio in the bands below 30 MHz –
Methods of measurement for DRM 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 de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale R
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 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 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-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 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-of-band emission limits (upper half only of a symmetrical spectrum
mask shown).18

Table B.1 – Out-of-band emission limits .18

62272-2 © IEC:2007(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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 publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National 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 Standardization (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 representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property 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 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 any or all such patent rights.
International Standard IEC 62272-2 has been prepared by IEC technical committee 103:
Transmitting equipment for radiocommunication.
The text of this standard is based on the following documents:
FDIS Report on voting
103/64/FDIS 103/66/RVD
Full information on the voting 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.

– 4 – 62272-2 © IEC:2007(E)
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
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

62272-2 © IEC:2007(E) – 5 –
DIGITAL RADIO MONDIALE (DRM) –

Part 2: Digital radio in the bands below 30 MHz –
Methods of measurement for DRM transmitters

1 Scope
This part of IEC 62272 describes the methods of measurement to assess the performance
characteristics of digital modulated radio transmitters in the bands below 30 MHz for sound
and/or data broadcasting in the LF, MF and HF bands, and to facilitate 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 radio transmitters. The measurement 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.
The measurement methods described in this standard are intended to be used for type
approval tests, quality control tests or acceptance test measurements in factories and on site.
Fewer or additional measurements may be carried out by agreement between customer and
supplier. Any additional test should comply with standards which have been established by
other study groups, subcommittees of the IEC or other international or suitably accredited
organizations.
This standard does not specify limiting values for acceptable performance as these are usually
given in the equipment specification or in requirements laid down by the responsible regulation
bodies. However, some values are quoted, where appropriate, for guidance in the presentation
of the results.
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 amendments) applies.
IEC 60244-1, Methods of measurement for radio transmitters – Part 1: General characteristics
for broadcast transmitters
IEC 60244-15, Methods of measurement for radio transmitters – Part 15: Amplitude-modulated
transmitters for sound broadcasting
IEC 60215, Safety requirements for radio transmitting equipment
ITU Radio Regulations
ITU-R Recommendation V.663, Use of certain terms linked with physical quantities

– 6 – 62272-2 © IEC:2007(E)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
DRM standard
digital modulation standard for frequencies in the bands below 30 MHz for the purposes of
audio and data broadcasting
3.1.2
DRM transmitters
sound broadcasting transmitters operating in the bands below 30 MHz and incorporating digital
modulation in accordance with IEC 62272-1
3.1.3
power definitions
nominal outpu
...

IEC 62272-2 ®
Edition 1.0 2007-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Digital radio mondiale (DRM) –
Part 2: Digital radio in the bands below 30 MHz – Methods of measurement for
DRM transmitters
Digital radio mondiale (DRM) –
Partie 2: Radiodiffusion numérique sur des bandes inférieures à 30 MHz –
Méthodes de mesure applicables aux émetteurs DRM

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IEC 62272-2 ®
Edition 1.0 2007-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Digital radio mondiale (DRM) –

Part 2: Digital radio in the bands below 30 MHz – Methods of measurement for

DRM transmitters
Digital radio mondiale (DRM) –

Partie 2: Radiodiffusion numérique sur des bandes inférieures à 30 MHz –

Méthodes de mesure applicables aux émetteurs DRM

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 33.060.20 ISBN 978-2-88912-904-1

– 2 – 62272-2  IEC:2007
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 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-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 . 14
10 Safety . 15

Annex A (informative) Measuring arrangements . 16
Annex B (informative) Out-of-band emission limits for DRM transmitters . 18
Annex 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-of-band emission limits (upper half only of a symmetrical spectrum
mask shown) . 18

Table B.1 – Out-of-band emission limits . 18

62272-2  IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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 publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National 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 Standardization (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 representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property 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 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 any or all such patent rights.
International Standard IEC 62272-2 has been prepared by IEC technical committee 103:
Transmitting equipment for radiocommunication.
This bilingual version (2012-05) corresponds to the monolingual English version, published in
2007-03.
The text of this standard is based on the following documents:
FDIS Report on voting
103/64/FDIS 103/66/RVD
Full information on the voting 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.

– 4 – 62272-2  IEC:2007
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
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print th
...