IEC 60728-2:2010

Cable networks for television signals, sound signals and interactive services - Part 2: Electromagnetic compatibility for equipment

IEC 60728-2:2010(E) applies to the radiation characteristics and immunity to electromagnetic disturbance of EM active equipment (active and passive equipment) for the reception, processing and distribution of television, sound and interactive multimedia signals as dealt with in the IEC 60728 series. It specifies requirements for maximum allowed radiation, minimum immunity and minimum screening effectiveness and describes test methods for conformance testing. It cancels and replaces the first edition published in 2002, of which it constitutes a technical revision and includes the following significant technical changes with respect to the previous edition:
- updated scope, added some new terms and definitions;
- added methods of measurement and performance requirements for telecom signal ports of multimedia network equipment;
- updated methods of measurement for immunity and emissions;
- applicability of EMC performance requirements and methods of measurement to different types of equipment.

General Information

• Status: Published
• Publication Date: 20-Jan-2010
• ICS: 33.160.99 - Other audio, video and audiovisual equipment
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 10-Jan-2018

Relations

• Revised: IEC 60728-2:2018 - Cable networks for television signals, sound signals and interactive services - Part 2: Electromagnetic compatibility for equipment
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60728-2


®

Edition 2.0 2010-01



INTERNATIONAL



STANDARD





Cable networks for television signals, sound signals and interactive services –
Part 2: Electromagnetic compatibility for equipment




IEC 60728-2:2010(E)

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IEC 60728-2


®

Edition 2.0 2010-01



INTERNATIONAL



STANDARD





Cable networks for television signals, sound signals and interactive services –
Part 2: Electromagnetic compatibility for equipment



INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 33.060.40, 33.100 ISBN 978-2-88910-262-4
® Registered trademark of the International Electrotechnical Commission

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– 2 – 60728-2 © IEC:2010(E)



CONTENTS

FOREWORD.5


INTRODUCTION.7

1 Scope.8

2 Normative references .10


3 Terms, definitions, symbols and abbreviations.11

3.1 Terms and definitions .11

3.2 Symbols .16

3.3 Abbreviations .17
4 Methods of measurements.17
4.1 General operating conditions.17
4.2 Disturbance voltages from equipment.18
4.2.1 Disturbance voltages from equipment in the frequency range from
9 kHz to 30 MHz.18
4.2.2 Disturbance voltages from equipment at the AC mains frequency and
its harmonics .18
4.2.3 Measurement of input terminal disturbance voltage .18
4.3 Radiation from active equipment .19
4.3.1 Introduction .19
4.3.2 General measurement requirements .19
4.3.3 Methods of measurements.20
4.4 Immunity of active equipment .29
4.4.1 General .29
4.4.2 Performance criterion .29
4.4.3 Measurement of the external immunity to ambient fields.30
4.4.4 Internal immunity (immunity to unwanted signals) .36
4.5 Screening effectiveness of passive equipment .41
4.5.1 Introduction .41
4.5.2 General measurement requirements .41
4.5.3 Methods of measurements.41
4.6 Electrostatic discharge immunity test for active equipment .42
4.7 Electrical fast transient/burst immunity test for AC power ports .43
4.8 Methods of measurement for telecom signal ports of multimedia network
equipment .43

5 Performance requirements .43
5.1 General .43
5.1.1 Emission performance requirements.43
5.1.2 Immunity performance requirements.43
5.2 Disturbance voltages from equipment.43
5.2.1 Limits of mains terminal disturbance voltage.43
5.2.2 Limits of input terminal disturbance voltages .43
5.3 Radiation.44
5.3.1 Radiation from active equipment.44
5.3.2 Local oscillator power at the outdoor unit input .44
5.4 Immunity of active equipment .45
5.4.1 External immunity to electromagnetic fields .45
5.4.2 Internal immunity.45
5.4.3 Immunity of outdoor units to image frequency signals.50

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60728-2 © IEC:2010(E) – 3 –


5.5 Screening effectiveness of passive equipment .50

5.6 Electrostatic discharge immunity test for active equipment .50

5.7 Electrical fast transient/burst immunity test for AC power ports .50

5.8 Performance requirements for telecom signal ports of multimedia network
equipment .51

5.9 Applicability of EMC performance requirements and methods of
measurement to different types of equipment .51

Bibliography.53



Figure 1 – Measurement set-up for radiation measurements in the frequency range

5 MHz to 30 MHz using the coupling unit method.21
Figure 2 – Absorbing clamp method (30 MHz to 950 MHz) .23
Figure 3 – Example of general measurement set-up .24
Figure 4 – Example of measurement set-up for measurements on the input port of
active equipment.24
Figure 5 – Measurement set-up for the "substitution" radiation method – First
measurement step .26
Figure 6 – Measurement set-up for the substitution radiation method – Second
measurement step .27
Figure 7 – Frequency allocation for out-of-band immunity measurement of active
equipment with nominal frequency range below 950 MHz for AM applications
(Example: VHF broadband amplifier; bandwidth 40 MHz to 450 MHz) .30
Figure 8 – Frequency allocation for out-of-band immunity measurement of active
equipment with nominal frequency range above 950 MHz for FM applications
(Example: IF amplifier; bandwidth 950 MHz to 1750 MHz) .31
Figure 9 – Frequency allocation for in-band immunity measurement of active
equipment with nominal frequency range below 950 MHz for AM applications
(Example: broadband amplifier; bandwidth 40 MHz to 862 MHz) .34
Figure 10 – Frequency allocation for in-band immunity measurement of active
equipment with nominal frequency range above 950 MHz for FM applications
(Example: IF amplifier; bandwidth 950 MHz to 3000 MHz) .34
Figure 11 – Measurement set-up for internal immunity test .36
Figure 12 – Levels of wanted and unwanted signals for the internal immunity of FSS
receiving outdoor units.39
Figure 13 – Levels of wanted and unwanted signals for the internal immunity of BSS
receiving outdoor units.40

Figure 14 – Levels of unwanted signals for the internal immunity of active equipment
in Band I (47 MHz to 68 MHz) .46
Figure 15 – Levels of unwanted signals for the internal immunity of active equipment
in Band II (87,5 MHz to 108 MHz) .47
Figure 16 – Levels of unwanted signals for the internal immunity of active equipment
in Band III (174 MHz to 230 MHz) .48
Figure 17 – Levels of unwanted signals for the internal immunity of active equipment
in Band IV/V (470 MHz to 862 MHz).49

Table 1 – Port structure of different network equipment .9
Table 2 – Limits of mains terminal disturbance voltage .43
Table 3 – Limits of input terminal disturbance voltages .44
Table 4 – Limits of radiated disturbance power .44
Table 5 – Limits of local oscillator terminal power .44

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Table 6 – Limits of out-of-band immunity (lowest level/field strength for compliance

with performance criterion, given in 4.4.2) .45

Table 7 – Limits of in-band immunity (lowest level/field strength for compliance with

performance criterion, given in 4.4.2).45


Table 8 – Test specification for internal immunity.46

Table 9 – Limits of immunity to image frequency signals in terms of image

suppression ratio .50

Table 10 – Limits of screening effectiveness of passive equipment within the nominal

frequency ranges .50

Table 11 – Test specifications for electrostatic discharge immunity test for active

equipment.50
Table 12 – Test specifications for electrical fast transient/burst immunity test .51
Table 13 – Port types and environmental conditions for EMC performance
requirements and methods of measurement.51
Table 14 – Emission parameters.51
Table 15 – Immunity and screening effectiveness parameters.52

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60728-2 © IEC:2010(E) – 5 –


INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________



CABLE NETWORKS FOR TELEVISION SIGNALS,

SOUND SIGNALS AND INTERACTIVE SERVICES –



Part 2: Electromagnetic compatibility for equipment





FOREWORD

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International Standard IEC 60728-2 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 2002, of which it
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– updated scope, added some new terms and definitions;
– added methods of measurement and performance requirements for telecom signal ports of
multimedia network equipment;
– updated methods of measurement for immunity and emissions;

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– 6 – 60728-2 © IEC:2010(E)


– applicability of EMC performance requirements and methods of measurement to different

types of equipment.


The text of this standard is based on the following documents:


FDIS Report on voting

100/1620/FDIS 100/1640/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.
The list of all the parts of the IEC 60728 series, under the general title Cable networks for
television signals, sound signals and interactive services, can be found on the IEC website.
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.

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60728-2 © IEC:2010(E) – 7 –


INTRODUCTION


Standards of the IEC 60728 series deal with cable networks including equipment and

associated methods of measurement for headend reception, processing and distribution of

television signals, sound signals, interactive services signals, interfaces and their associated

data signals, using all applicable transmission media.


This includes


1
• CATV -networks,

• MATV-networks and SMATV-networks,

• individual receiving networks,
and all kinds of equipment, systems and installations installed in such networks.
The extent of this standardization work is from the antennas, special signal source inputs to
the headend or other interface points to the network up to the terminal input.
The standardization of any user terminals (i.e. tuners, receivers, decoders, terminals, etc.) as
well as of any coaxial, balanced and optical cables and accessories thereof is excluded.


___________
1
 This word encompasses the HFC networks used nowadays to provide telecommunications services, voice,
data, audio and video both broadcast and narrowcast.

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CABLE NETWORKS FOR TELEVISION SIGNALS,

SOUND SIGNALS AND INTERACTIVE SERVICES –



Part 2: Electromagnetic compatibility for equipment








1 Scope


This part of IEC 60728 applies to the radiation characteristics and immunity to
electromagnetic disturbance of EM-active equipment (active and passive equipment) for the
reception, processing and distribution of television, sound and interactive multimedia signals
as dealt with in the following parts of the IEC 60728 series:
– IEC 60728-3 Active wideband equipment for coaxial cable networks
– IEC 60728-4 Passive wideband equipment for coaxial cable networks
– IEC 60728-5 Headend equipment
– IEC 60728-6 Optical equipment
It covers the following frequency ranges:
– Disturbance voltage injected into the mains 9 kHz to 30 MHz
– Radiation from active equipment 5 MHz to 25 GHz
– Immunity of active equipment 150 kHz to 25 GHz
– Screening effectiveness of passive
2
5 MHz to 3 GHz (25 GHz)
equipment
This standard specifies requirements for maximum allowed radiation, minimum immunity and
minimum screening effectiveness and describes test methods for conformance testing.
Due to the fact that cable networks, the former cabled distribution systems for television and
sound signals, are more and more used for interactive services, these networks may
incorporate also equipment, which carry besides the cable network equipment ports also one
or more telecom signal port(s) as well as one Ethernet (IP) port. This equipment should be
named as multimedia network equipment.
The EMC behaviour of cable network equipment, telecommunication network equipment and
multimedia network equipment may be described by the following port structure (see Table 1).

___________
2
 For screening effectiveness of passive equipment no requirements apply at present for the frequency range
3 GHz to 25 GHz. Methods of measurement and limits are investigated for inclusion in a future amendment or
revised edition.

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60728-2 © IEC:2010(E) – 9 –


Table 1 – Port structure of different network equipment


Cable network Telecommunication Multimedia network
Port name

equipment network equipment equipment

Enclosure X X X

Earth X X X

AC/DC power supply X X X


Control (e.g. alarm) X X X

Antenna input port X X

RF network port X X

Telecom signal port X X
Ethernet (IP) port  X

Table 1 shows that cable network equipment and telecommunication network equipment have
four common ports and one respectively two individual port each. Multimedia network
equipment carries besides the common ports an antenna input port and/or a RF network port
as well as a telecom signal port.
The electromagnetic compatibility requirements for telecommunication network equipment
only are standardized in EN 300 386 (mainly) and in EN 301 489-4, those for cable network
equipment only are given in this IEC 60728-2.
Equipment for multimedia networks of the above mentioned type has to work under the same
EMC conditions as equipment, which is falling under the cable network and the
telecommunication network EMC-standards. Due to the fact, that this equipment has to work
in close proximity, e.g. in the same operating room, the EMC environmental conditions for all
three types of equipment are the same.
This means that multimedia network equipment has to fulfil the EMC requirements of one of
the above mentioned standards and in addition the EMC requirements, laid down in the other
EMC standard, for the additional port, by which it is connected to the other network.
By this procedure it is ensured that multimedia network equipment fulfils the EMC conditions
of one of the above mentioned networks and will neither disturb the respective other system
nor will be disturbed by the respective other system via the connecting port.
Coaxial cables for cable networks do not fall under the scope of this standard. Reference is
made to the European Standard series EN 50117.

This standard also covers active indoor antennas for which the requirements and the
applicable methods of measurement are limited to the radiation and the electrostatic
discharge phenomena.
Standardisation in the field of electromagnetic compatibility for any broadcast terminals (e.g.
tuners, receivers, decoders, etc.) is covered by the International Standards CISPR 13 and
CISPR 20 and for multimedia terminals by CISPR 22 and CISPR 24.
Requirements for the electromagnetic compatibility of receiver leads are laid down in
IEC 60966-2-4, IEC 60966-2-5 and IEC 60966-2-6.

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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.


CISPR 13, Sound and television broadcast receivers and associated equipment – Radio

disturbance characteristics – Limits and methods of measurement


CISPR 16-1-1, Specification for radio disturbance and immunity measuring apparatus and

methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring

apparatus
CISPR 20, Sound and television broadcast receivers and associated equipment – Immunity
characteristics – Limits and methods of measurement
CISPR 22, Information technology equipment – Radio disturbance characteristics – Limits and
methods of measurement
CISPR 24, Information technology equipment – Immunity characteristics – Limits and methods
of measurement
IEC 60050-161, International Electrotechnical Vocabulary – Chapter 161: Electromagnetic
compatibility
IEC 60617, Graphical symbols for diagrams
IEC 60728 (all parts), Cable networks for television signals, sound signals and interactive
services
IEC 60728-3:2005, Cable networks for television signals, sound signals and interactive
services – Part 3: Active wideband equipment for coaxial cable networks
IEC 60966-2-4, Radio frequency and coaxial cable assemblies – Part 2-4: Detail specification
for cable assemblies for radio and TV receivers – Frequency range 0 MHz to 3 000 MHz,
IEC 61169-2 connectors
IEC 60966-2-5, Radio frequency and coaxial cable assemblies – Part 2-5: Detail specification
for cable assemblies for radio and TV receivers – Frequency range 0 MHz to 1 000 MHz,
IEC 61169-2 connectors

IEC 60966-2-6, Radio frequency and coaxial cable assemblies – Part 2-6: Detail specification
for cable assemblies for radio and TV receivers – Frequency range 0 MHz to 3 000 MHz,
IEC 61169-24 connectors
IEC 61000-3-2, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic
current emissions (equipment input current ≤16 A per phase)
IEC 61000-4-3, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement
techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement
techniques – Electrical fast transient/burst immunity test
IEC 61000-4-6, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement
techniques – Immunity to conducted disturbances, induced by radio-frequency fields

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60728-2 © IEC:2010(E) – 11 –


IEC 61000-6-1:2005, Electromagnetic compatibility (EMC) – Part 6-1: Generic standards –

Immunity for residential, commercial and light-industrial environments


IEC 61079-1:1992, Methods of measurement on receivers for satellite broadcast

transmissions in the 12 GHz band – Part 1: Radio-frequency measurements on outdoor units


EN 300 386 V1.3.3 (2005), Electromagnetic compatibility and Radio spectrum Matters (ERM);

Telecommunication network equipment; ElectroMagnetic Compatibility (EMC) requirements


EN 301 489-4 V1.3.1 (2002) Electromagnetic compatibility and Radio spectrum Matters

(ERM); ElectroMagnetic Compati
...