IEC 60728-12:2017

Cable networks for television signals, sound signals and interactive services - Part 12: Electromagnetic compatibility of systems

IEC 60728-12:2017(E) applies to the radiation characteristics and immunity to electromagnetic disturbance of cable networks for television signals, sound signals and interactive services and covers the frequency range 0,15 MHz to 3,5 GHz. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) IEC 60728-12 with its methods of measurement and EMC performance requirements is explicitly dedicated to “under operating conditions (in situ)” to ensure the ongoing EMC integrity of cable networks.
b) The first intermediate frequency range (1st IF range) for satellite signal transmission was extended to cover now frequencies from 950 MHz up to 3 500 MHz.
c) The method of measurement and the requirements for in-band immunity were extended taking into account the new EMC environment due to the allocation of broadband wireless services in the frequency band 694 MHz to 862 MHz. As a consequence, the limits of in-band immunity were specified for analogue and additionally for digital signals in this frequency range.
d) The substitution method of measurement (power method) was deleted.
e) EMC measurements below 30 MHz were deleted.
f) New Annex D “Measurements at other distances than the standard distance of 3 m”.
g) New Annex E “GPS based leakage detection system for cable networks”.

General Information

• Status: Published
• Publication Date: 18-Jun-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.060.40 - Cabled distribution systems
• ICS: 33.100.01 - Electromagnetic compatibility in general
• Technical Committee: TA 5 - Cable networks for television signals, sound signals and interactive services
• Drafting Committee: WG 2 - TC 100/WG 2
• Current Stage: PPUB - Publication issued
• Start Date: 16-Jun-2017
• Completion Date: 19-Jun-2017

Relations

• Revises: IEC 60728-12:2001 - Cabled distribution systems for television and sound signals - Part 12: Electromagnetic compatibility of systems
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60728-12 ®
Edition 2.0 2017-06
INTERNATIONAL
STANDARD
Cable networks for television signals, sound signals and interactive services –
Part 12: Electromagnetic compatibility of systems
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 Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
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 corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 60728-12 ®
Edition 2.0 2017-06
INTERNATIONAL
STANDARD
Cable networks for television signals, sound signals and interactive services –

Part 12: Electromagnetic compatibility of systems

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.060.40; 33.100.01 ISBN 978-2-8322-4364-0

– 2 – IEC 60728-12:2017 © IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, symbols and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 10
4 Methods of measurement . 11
4.1 Basic principles . 11
4.2 Radiation from cable networks . 11
4.2.1 General . 11
4.2.2 Field strength method . 11
4.2.3 Subcarrier measurement procedure . 13
4.2.4 GPS based leakage detection system . 13
4.3 Immunity of cable networks . 14
4.3.1 General . 14
4.3.2 Measurement procedure for interference caused by high-power local
outdoor transmitter . 14
5 Performance requirements. 14
5.1 General conditions . 14
5.2 Radiation from cable networks and other sources . 15
5.2.1 General . 15
5.2.2 Measurement of the total radiation . 15
5.2.3 Measurement of narrowband radiation . 15
5.3 Immunity of cable networks . 16
Annex A (informative) Information on legal requirements in some countries . 17
A.1 Legislation in Germany . 17
A.2 Requirements in Germany . 17
A.3 Reference for legislation in Germany . 19
Annex B (informative) Frequency ranges of typical safety of life services . 20
Annex C (informative) Interdependence between the maximum allowable field strength
and the minimum signal level at system outlet . 21
Annex D (normative) Measurements at other distances than the standard distance of
3 m . 23
D.1 Measurement at a reduced distance below 3 m . 23
D.2 Measurement at measurement distances above 3 m . 23
Annex E (informative) GPS based leakage detection system for cable networks . 24
E.1 General . 24
E.2 Automated data collection by driving through the HFC network . 24
E.3 Tagging of the signal . 24
E.4 Post-processing the collected data and visualization of leakages . 24
E.5 On-site location of the leak . 24
Bibliography . 25

Table 1 – Limits of total radiation . 15
Table 2 – Narrowband radiation limits . 15

Table 3 – Maximum expected field strength . 16
Table 4 – Required carrier-to-interference ratio . 16
Table A.1 – Protection of particular frequency ranges according to § 3 of the Order . 18
Table A.2 – Field strength limit values at a 3 m distance from line-bound
telecommunications facilities and networks . 19
Table B.1 – Frequency ranges of typical safety of life services . 20

– 4 – IEC 60728-12:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –

Part 12: Electromagnetic compatibility of systems

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) 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 60728-12 has been prepared by technical area 5: Cable networks
for television signals, sound signals and interactive services, of IEC technical committee 100:
Audio, video and multimedia systems and equipment.
This second edition cancels and replaces the first edition published in 2001. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) IEC 60728-12 with its methods of measurement and EMC performance requirements is
explicitly dedicated to “under operating conditions (in situ)” to ensure the ongoing EMC
integrity of cable networks.
b) The first intermediate frequency range (1st IF range) for satellite signal transmission was
extended to cover now frequencies from 950 MHz up to 3 500 MHz.

c) The method of measurement and the requirements for in-band immunity were extended
taking into account the new EMC environment due to the allocation of broadband wireless
services in the frequency band 694 MHz to 862 MHz. As a consequence, the limits of in-
band immunity were specified for analogue and additionally for digital signals in this
frequency range.
d) The substitution method of measurement (power method) was deleted.
e) EMC measurements below 30 MHz were deleted.
f) New Annex D “Measurements at other distances than the standard distance of 3 m”.
g) New Annex E “GPS based leakage detection system for cable networks”.
The text of this International Standard is based on the following documents:
FDIS Report on voting
100/2895/FDIS 100/2926/RVD
Full information on the voting for the
...