CISPR TR 31:2024
(Main)Description of the radio services database
Description of the radio services database
CISPR TR 31: 2024, which is a Technical Report, covers the rationale behind the database containing the characteristics of radio services. The database is a "living document " in the format of a spreadsheet file in the EMC Zone of the IEC web site: https://www.iec.ch/emc/radio-services-database . As new input for the IEC Radio Services Database arrives, this Technical Report provides guidance and support for the systematic collation of data on those radio services which are relevant for determination of CISPR limits according to CISPR TR 16-4-4. All interested parties are invited to contribute with relevant data to the database, e.g., via the National Committees represented in CISPR/H. The objective of the database is to register those characteristics which are relevant for derivation and specification of limits for disturbances from electric and/or electronic equipment, systems and installations. Committees responsible for generic and/or product emission EMC standards use this information together with CISPR TR 16-4-4.
This third edition cancels and replaces the second edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) A new Clause 3 covers a line of essential definitions of radio parameters, the knowledge of which is necessary to get qualified input data for inclusion of essential requirements in the present radio services database (RSD) maintained by CISPR and IEC.
b) The radio parameters and conditions of use of radio receivers listed in Table 1 of this edition of CISPR TR 31 are provided now with instructive advice in its new Subclauses 5.1 and 5.2, on selection of data for input to the RSD and retrieval of that data for consideration and use with the limits setting model as in CISPR TR 16-4-4 which was missing in the previous edition of CISPR TR 31.
c) Finally, another new informative Annex B informs, to the extent necessary, on the principles of ITU-R on determination of data for the minimum usable field strength (to be inserted in Column (E) of the RSD) and of the associated tolerable disturbance at the antenna of the radio reception system or other self-contained radio receiver (also to be used as input with the limits-setting model in CISPR TR 16-4-4), which concerns only parties who are concerned with designing and projecting of radio-communication/broadcast networks and with coverage planning of related radio services. Knowledge of these fundamental principles also by CISPR experts will ensure that only valid data will get future input to the RSD maintained by CISPR and IEC.
DESCRIPTION DE LA BASE DE DONNEES DES SERVICES RADIO
General Information
Relations
Standards Content (Sample)
CISPR TR 31 ®
Edition 3.0 2024-11
TECHNICAL
REPORT
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Description of the radio services database
All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.
IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and once
containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.
Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
CISPR TR 31 ®
Edition 3.0 2024-11
TECHNICAL
REPORT
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Description of the radio services database
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.10 ISBN 978-2-8327-0034-1
– 2 – CISPR TR 31:2024 © IEC 2024
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions. 5
3.2 Abbreviated terms . 7
4 Global advice on usage of the database . 8
4.1 General . 8
4.2 Input to the database . 8
4.3 Use of data from the database for limits determination . 8
5 Outline of the database and explanations to its content . 8
5.1 Outline of the database . 8
5.2 Additional information on the characteristics used in the radio service
database . 10
Annex A (informative) Reporting Form . 13
Annex B (informative) Determination of the minimum usable field strength and
associated tolerable disturbance field strength from sources other than radio
equipment, at the antenna of radio stations according to the radio standards and
recommendations of ITU-R . 15
B.1 Determination of the minimum usable field strength . 15
B.2 Determination of the maximum value (limit) for unwanted emanations of EMI
sources other than radio equipment . 16
Bibliography . 17
Figure A.1 – Example for entries of data in the Radio Services Database based on the
principles defined in Clause 5 . 14
Table 1 – Terms used in the headers of the database and explanations on their
purpose . 9
Table A.1 – Reporting form . 13
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DESCRIPTION OF THE RADIO SERVICES DATABASE
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
CISPR 31 has been prepared by CISPR subcommittee H: Limits for the protection of radio
services, of IEC technical committee CISPR: International special committee on radio
interference. It is a Technical Report.
This third edition cancels and replaces the second edition published in 2012. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) A new Clause 3 covers a line of essential definitions of radio parameters, the knowledge of
which is necessary to get qualified input data for inclusion of essential requirements in the
present radio services database (RSD) maintained by CISPR and IEC.
– 4 – CISPR TR 31:2024 © IEC 2024
b) The radio parameters and conditions of use of radio receivers listed in Table 1 of this edition
of CISPR TR 31 are provided now with instructive advice in its new Subclauses 5.1 and 5.2,
on selection of data for input to the RSD and retrieval of that data for consideration and use
with the limits setting model as in CISPR TR 16-4-4 which was missing in the previous
edition of CISPR TR 31.
c) Finally, another new informative Annex B informs, to the extent necessary, on the principles
of ITU-R on determination of data for the minimum usable field strength (to be inserted in
Column (E) of the RSD) and of the associated tolerable disturbance at the antenna of the
radio reception system or other self-contained radio receiver (also to be used as input with
the limits-setting model in CISPR TR 16-4-4), which concerns only parties who are
concerned with designing and projecting of radio-communication/broadcast networks and
with coverage planning of related radio services. Knowledge of these fundamental principles
also by CISPR experts will ensure that only valid data will get future input to the RSD
maintained by CISPR and IEC.
The text of this Technical Report is based on the following documents:
Draft Report on voting
CIS/H/509/DTR CIS/H/520/RVDTR
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Report is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
DESCRIPTION OF THE RADIO SERVICES DATABASE
1 Scope
This Technical Report covers the rationale behind the database containing the characteristics
of radio services. The database is a "living document " in the format of a spreadsheet file in the
EMC Zone of the IEC web site:
https://www.iec.ch/emc/radio-services-database
As new input for the IEC Radio Services Database arrives, this Technical Report provides
guidance and support for the systematic collation of data on those radio services which are
relevant for determination of CISPR limits according to CISPR TR 16-4-4. All interested parties
are invited to contribute with relevant data to the database, e.g., via the National Committees
represented in CISPR/H.
The objective of the database is to register those characteristics which are relevant for
derivation and specification of limits for disturbances from electric and/or electronic equipment,
systems and installations. Committees responsible for generic and/or product emission EMC
standards use this information together with CISPR TR 16-4-4.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated refer
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.