SIST EN 60728-1-2:2014

Cable networks for television signals, sound signals and interactive services - Part 1-2: Performance requirements for signals delivered at the system outlet in Operation (IEC 60728-1-2:2014)

Standard provides the requirements and describes the implementation guidelines of RF cabling for two-way home networks. This standard is applicable to any home network that distributes signals provided by CATV/MATV/SMATV cable networks (including individual receiving systems) having a coaxial cable output. This standard also applies to home networks where some part of the distribution network uses wireless links, for example instead of the receiver cord. This part of IEC 60728 is therefore applicable to RF cabling for two-way home networks with wired cords or wireless links inside a room and primarily intended for television and sound signals operating between about 5 MHz and 3 000 MHz. The frequency range is extended to 6 000 MHz for distribution techniques that replace wired cords with a wireless two-way communication inside a room (or a small number of adjacent rooms) that uses the 5 GHz to 6 GHz band.

Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 1-2: Leistungsanforderungen an Signale der Teilnehmeranschlussdose im realen Betrieb (IEC 60728-1-2:2014)

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 1-2: Exigences de performance relatives aux signaux délivrés à la prise terminale en fonctionnement (CEI 60728-1-2:2014)

L'IEC 60728-1-2:2014 décrit les exigences minimales de qualité en fonctionnement des signaux à la prise d'abonné ou à la borne d'entrée du terminal et décrit les critères d'addition des dégradations, celles présentes dans les signaux reçus, et celles produites par le réseau de distribution par câbles CATV/MATV/SMATV, ceci comprenant les systèmes de réception individuels. Elle s'applique aux réseaux de distribution par câbles pour les signaux de télévision, de radiodiffusion sonore et des services interactifs fonctionnant entre environ 5 MHz et 3 000 MHz. La bande de fréquences est étendue à 6 000 MHz pour les techniques de distribution domestique où des cordons filaires sont remplacés par une communication bidirectionnelle sans fil à l'intérieur d'une pièce (ou d'un nombre restreint de pièces adjacentes) utilisant la bande de fréquences de 5 GHz à 6 GHz. Cette deuxième édition annule et remplace la première édition parue en 2009, dont elle constitue une révision technique. Elle inclut les modifications suivantes: mise à jour des exigences de qualité de l'Article 7 afin d'inclure les exigences pour les signaux DVB-T2.

Kabelska omrežja za televizijske in zvokovne signale ter interaktivne storitve - 1-2. del: Tehnične zahteve za signale na izhodu delujočega sistema (IEC 60728-1-2:2014)

Standard določa zahteve in opisuje izvedbene smernice RF-okablenja za dvosmerna domača omrežja. Ta standard se uporablja za katero koli domače omrežje, ki distribuira signale, ki jih posredujejo kabelska omrežja CATV/MATV/SMATV (vključno s posamičnimi sistemi za sprejem) s koaksialnim kabelskim izhodom. Ta standard se uporablja tudi za domača omrežja, pri katerih del razdelilnega omrežja uporablja brezžične povezave, na primer namesto sprejemnega kabla. Ta del standarda IEC 60728 se torej uporablja za radiofrekvenčne kable za dvosmerna domača omrežja z žičnimi kabli ali brezžičnimi povezavami znotraj sobe ter je namenjen predvsem za televizijske in zvokovne signale s frekvenco med približno 5 MHz in 3000 MHz. Frekvenčni razpon se poveča na 6000 MHz pri distribucijskih tehnikah, ki nadomeščajo žične kable z brezžično dvosmerno komunikacijo znotraj sobe (ali manjšega števila sosednjih sob), ki uporablja pas med 5 GHz in 6 GHz.

General Information

• Status: Published
• Publication Date: 12-Oct-2014
• ICS: 33.060.40 - Cabled distribution systems
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 05-Sep-2014
• Due Date: 10-Nov-2014
• Completion Date: 13-Oct-2014
• Ref Project: EN 60728-1-2:2014 - Cable networks for television signals, sound signals and interactive services - Part 1-2: Performance requirements for signals delivered at the system outlet in operation

Relations

• Replaces: SIST EN 60728-1-2:2009 - Cable networks for television signals, sound signals and interactive services - Part 1-2: Performance requirements for signals delivered at the system outlet in operation (IEC 60728-1-2:2009)
• Effective Date: 16-Oct-2012
• Replaces: SIST EN 60728-1-2:2009 - Cable networks for television signals, sound signals and interactive services - Part 1-2: Performance requirements for signals delivered at the system outlet in operation (IEC 60728-1-2:2009)
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60728-1-2:2014
01-december-2014
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SIST EN 60728-1-2:2009
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Ta slovenski standard je istoveten z: EN 60728-1-2:2014
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
SIST EN 60728-1-2:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60728-1-2:2014

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SIST EN 60728-1-2:2014


EUROPEAN STANDARD EN 60728-1-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
August 2014
ICS 33.120.10; 33.160; 35.110 Supersedes EN 60728-1-2:2009
English Version
Cable networks for television signals, sound signals and
interactive services - Part 1-2: Performance requirements for
signals delivered at the system outlet in Operation
(IEC 60728-1-2:2014)
Réseaux de distribution par câbles pour signaux de Kabelnetze für Fernsehsignale, Tonsignale und interaktive
télévision, signaux de radiodiffusion sonore et services Dienste - Teil 1-2: Leistungsanforderungen an Signale der
interactifs - Partie 1-2: Exigences de performance relatives Teilnehmeranschlussdose im realen Betrieb
aux signaux délivrés à la prise terminale en fonctionnement (IEC 60728-1-2:2014)
(CEI 60728-1-2:2014)
This European Standard was approved by CENELEC on 2014-04-11. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60728-1-2:2014 E

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SIST EN 60728-1-2:2014
EN 60728-1-2:2014 - 2 -
Foreword
The text of document 100/2246/FDIS, future edition 2 of IEC 60728-1-2, prepared by Technical Area 5
“Cable networks for television signals, sound signals and interactive services” of IEC/TC 100 “Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 60728-1-2:2014.

The following dates are fixed:
• latest date by which the document has to be (dop) 2015-02-28
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-04-11
• latest date by which the national
standards conflicting with the
document have to be withdrawn

This document supersedes EN 60728-1-2:2009.

EN 60728-1-2:2014 includes the following significant technical changes with respect to
EN 60728 1-2:2009:
- update of performance requirements in Clause 7 to include those for DVB-T2 signals.

This standard is to be used in conjunction with EN 60728-1:2014.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.

Endorsement notice
The text of the International Standard IEC 60728-1-2:2014 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 60728-10 NOTE Harmonized as EN 60728-10.

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SIST EN 60728-1-2:2014
- 3 - EN 60728-1-2:2014
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu

Publication Year Title EN/HD Year

IEC 60050-705 -  International Electrotechnical Vocabulary - -
(IEV) -
Chapter 705: Radio wave propagation
IEC 60050-712 -  International Electrotechnical Vocabulary - -
(IEV) -
Chapter 712: Antennas
IEC 60050-725 -  International Electrotechnical Vocabulary - -
(IEV) -
Chapter 725: Space radiocommunications
IEC 60728-1 2014 Cable networks for television signals, EN 60728-1 2014
sound signals and interactive services -
Part 1: System performance of forward
paths
IEC 60728-1-1 2014 Cable networks for television signals EN 60728-1-1 2014
sound signals and interactive services -
Part 1-1: RF cabling for two way home
networks
IEC 60728-3 2010 Cable networks for television signals, EN 60728-3 2011
sound signals and interactive services -
Part 3: Active wideband equipment for
cable networks
IEC 60966-2-4 -  Radio frequency and coaxial cable EN 60966-2-4 -
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 EN 60966-2-5 -
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

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SIST EN 60728-1-2:2014
EN 60728-1-2:2014 - 4 -
Publication Year Title EN/HD Year

IEC 60966-2-6 - Radio frequency and coaxial cable EN 60966-2-6 -
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
ITU-R -  Methodology for the subjective assessment - -
Recommendation of the quality of television pictures
BT.500
ITU-R -  Subjective quality of television pictures in - -
Recommendation relation to the main impairments of the
BT.654 analogue composite television signal
ITU-R -  Radio-frequency protection ratios for AM - -
Recommendation vestigial sideband terrestrial television
BT.655 systems interfered with by unwanted
analogue vision signals and their
associated sound signals
ITU-T -  Transmission performance of television - -
Recommendation circuits designed for use in international
J.61 connections
ITU-T -  Insertion of test signals in the field-blanking - -
Recommendation interval of monochrome and colour
J.63 television signals
ETSI EN 300 421 -  Digital Video Broadcasting (DVB): Framing - -
structure, channel coding and modulation
for 11/12 GHz satellite services
ETSI EN 300 429 -  Digital Video Broadcasting (DVB): Framing - -
structure, channel coding and modulation
for cable systems
ETSI EN 300 473 -  Digital Video Broadcasting (DVB): Satellite - -
Master Antenna Television (SMATV)
distribution systems
ETSI EN 300 744 -  Digital Video Broadcasting (DVB): Framing - -
structure, channel coding and modulation
for digital terrestrial television
ETSI EN 302 307 -  Digital Video Broadcasting (DVB);Second - -
generation framing structure, channel
coding and modulation systems for
Broadcasting, Interactive Services, News
Gathering and other broadband satellite
applications (DVB-S2)
ETSI EN 302 755 -  Digital Video Broadcasting (DVB); Frame - -
structure channel coding and modulation
for a second generation digital terrestrial
television broadcasting system (DVB-T2)

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SIST EN 60728-1-2:2014



IEC 60728-1-2

®


Edition 2.0 2014-03




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Cable networks for television signals, sound signals and interactive services –

Part 1-2: Performance requirements for signals delivered at the system outlet in

operation




Réseaux de distribution par câbles pour signaux de télévision, signaux de

radiodiffusion sonore et services interactifs –


Partie 1-2: Exigences de performance relatives aux signaux délivrés à la prise

terminale en fonctionnement












INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX W


ICS 33.120.10; 33.160; 35.110 ISBN 978-2-8322-1436-7



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 60728-1-2:2014
– 2 – IEC 60728-1-2:2014 © IEC 2014
CONTENTS

FOREWORD . 4
INTRODUCTION . 6
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, symbols and abbreviations . 10
3.1 Terms and definitions . 10
3.2 Abbreviations . 17
4 Methods of measurement . 18
5 Subjective quality of television pictures in relation to the main impairments of the
analogue composite television signal . 19
5.1 Subjective quality scale. 19
5.2 Subjective quality and objective parameters . 20
6 Summation of the impairments . 23
6.1 Impairments to be summed . 23
6.2 Summation laws . 23
6.2.1 General . 23
6.2.2 Voltage addition . 23
6.2.3 Power addition . 24
6.3 Examples . 24
7 Performance requirements in operation . 24
7.1 General . 24
7.2 Impedance . 25
7.3 Performance requirements at the terminal input . 25
7.3.1 Definition . 25
7.3.2 Signal level . 25
7.3.3 Other parameters . 25
7.4 Performance requirements at system outlets . 25
7.4.1 Minimum and maximum carrier levels . 25
7.4.2 Mutual isolation between system outlets . 26
7.4.3 Isolation between individual outlets in one household . 26
7.4.4 Isolation between forward and return path . 26
7.4.5 Long-term frequency stability of distributed carrier signals at
any system outlet. 26
7.4.6 Carrier level differences at system outlet . 26
7.4.7 Frequency response within a television channel . 26
7.4.8 Random noise at system outlet . 26
7.4.9 Interference to television channels. 29
Annex A (normative) RF carrier to noise ratio . 31
A.1 AM-VSB modulated signals . 31
A.1.1 General . 31
A.1.2 Definition . 31
A.1.3 TV receiver IF filtering process . 31
A.1.4 Equivalent noise bandwidth . 31
A.1.5 AM demodulation process . 32
A.2 FM modulated signals . 33

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SIST EN 60728-1-2:2014
IEC 60728-1-2:2014 © IEC 2014 – 3 –
Annex B (informative) Examples of summation of impairments. 34
B.1 Voltage addition . 34
B.2 Power addition . 34
Bibliography . 36

Figure 1 – CATV/MATV/SMATV cable network – Performance requirements . 7
Figure 2 – Examples of location of HNI for various home network types . 14
Figure 3 – Signal to echo ratio (dB) versus echo delay (µs) . 22
Figure A.1 – Example of a TV receiver IF filter (systems B and G) . 31
Figure A.2 – Example of a demodulated TV signal (systems B and G) . 32

Table 1 – Methods of measurement of IEC 60728-1 applicable in operation . 19
Table 2 – Impairment units versus subjective quality . 20
Table 3 – Impairment grade versus un-weighted white noise . 21
Table 4 – Impairment grade versus differential gain . 21
Table 5 – Impairment grade versus differential phase . 21
Table 6 – Impairment grade versus short time linear distortion (2T pulse) . 21
Table 7 – Impairment grade versus chrominance-luminance gain inequality . 21
Table 8 – Impairment grade versus chrominance-luminance delay inequality . 22
Table 9 – Impairment grade versus echo rating (1 µs echo delay) . 22
Table 10 – Correction factors to be applied for delays different from 1 µs . 22
Table 11 – Carrier-to-noise ratios at system outlet (analogue television) in operation . 27
Table 12 – RF signal-to-noise ratios at system outlet (digital television) in operation . 27
Table 13 – Carrier-to-noise ratios at system outlet (sound radio) in operation . 29
Table B.1 – Examples of voltage addition . 34
Table B.2 – Examples of power addition . 35

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SIST EN 60728-1-2:2014
– 4 – IEC 60728-1-2:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –

Part 1-2: Performance requirements for signals
delivered at the system outlet in operation

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 60728-1-2 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 2009, and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• update of performance requirements in Clause 7 to include those for DVB-T2 signals.
This International Standard is to be used in conjunction with IEC 60728-1:2014.

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SIST EN 60728-1-2:2014
IEC 60728-1-2:2014 © IEC 2014 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
100/2246/FDIS 100/2282/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.
A list of all parts of the IEC 60728 series, published 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 stability 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.

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SIST EN 60728-1-2:2014
– 6 – IEC 60728-1-2:2014 © IEC 2014
INTRODUCTION
Standards and deliverables of the IEC 60728 series deal with cable networks including
equipment and associated methods of measurement for headend reception, processing and
distribution of television and sound signals, and for processing, interfacing and transmitting all
kinds of data signals for interactive services using all applicable transmission media. These
signals are typically transmitted in networks by frequency-multiplexing techniques.
This includes for instance
• regional and local broadband cable networks,
• extended satellite and terrestrial television distribution systems,
• individual satellite and terrestrial television receiving systems,
and all kinds of equipment, systems and installations used in such cable networks, distribution
and receiving systems.
The extent of this standardization work is from the antennas and/or special signal source
inputs to the headend or other interface points to the network up to the terminal input of the
customer premises equipment.
The standardization work will consider coexistence with users of the RF spectrum in wired
and wireless transmission systems.
The standardization of any user terminals (i.e. tuners, receivers, decoders, multimedia
terminals, etc.) as well as of any coaxial, balanced and optical cables and accessories thereof
is excluded.
The reception of television signals inside a building requires an outdoor antenna and a
distribution network to convey the signal to the TV receivers. In a building divided into
apartment blocks, the signals received by the antennas are distributed by the MATV/SMATV
cable network up to the home network interface (HNI). The television signals are then
distributed (inside the home) by home networks (HN) of various types up to the system outlet
or terminal input. The cable network can support two way operation, from the system outlet
(or terminal input) towards the headend.
The home network can use coaxial cables, balanced pair cables, fibre optic cables (glass or
plastic) and also wireless links inside a room (or a small number of adjacent rooms) to replace
wired cords.
IEC 60728-1-2 (this standard) deals with the requirements to be fulfilled at the system outlet
or terminal input, when the CATV/MATV/SMATV system is in operation.
These performance requirements for signals at the system outlet or terminal input in operation
are derived from considerations of the characteristics of the received signals at the input of
the headend (see Clause 6 of IEC 60728-1:2014) and the summation of the impairments
produced by the headend, the CATV/MATV/SMATV network and the home network, when the
requirements given in IEC 60728-1:2014 and IEC 60728-1-1 are fulfilled.
This standard gives the guidelines for calculation of the operational characteristics at system
outlet, taking into account the performance requirements of the CATV/MATV/SMATV network,
of the home networks and of the received signals, given in the International Standards
IEC 60728-1:2014 and 60728-1-1.
Figure 1 shows the main sections of a general CATV/MATV/SMATV system, indicating the
parts of the IEC 60728-1 series where the relevant performance requirements are indicated.

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SIST EN 60728-1-2:2014
IEC 60728-1-2:2014 © IEC 2014 – 7 –
• The requirements for the signals received at the headend are given in Clause 6 of
IEC 60728-1:2014.
• The requirements for the CATV/MATV/SMATV cable network, assuming an unimpaired
input signal at the input of the headend, up to the system outlet are given in
IEC 60728-1:2014, Clause 5.
• The requirements for the CATV/MATV/SMATV cable network up to the home network
interface (HNI) are given in IEC 60728-1:2014, Clause 7, assuming an unimpaired input
signal at the input of the headend.
• The specific requirements from HNI to the system outlet or terminal input are given in
IEC 60728-1-1:2014, Clause 5, assuming an unimpaired input signal at the HNI.
• The requirements at the system outlet in operation are given in Clause 7 of this standard.
The expression in operation means that the received signals, with their impairments, are
applied to the headend input of the CATV/MATV/SMATV cable network. The requirements at
the system outlet in operation are derived, therefore, by summing the impairments of the
various cascaded parts of the system and of the input signal.
When a change of signal format from analogue to analogue (e.g. from FM to AM-VSB) or from
digital to digital (e.g. from QPSK to QAM) or from digital to analogue (e.g. from DVB-S/S2 to
AM-VSB or DVB-T to AM-VSB) is made at the headend, the summation of the impairments
that produce a relaxation of requirements at system outlet does not apply. Such a case will be
the equivalence of unimpaired signals applied at the headend input. Therefore, the
requirements at system outlet given in IEC 60728-1:2014 apply.

Performance requirements,
see Clause 7 (in operation)
Antenna system
(or other feeding network)
Satellite
Terrestrial
antenna
antenna
HNI
CATV/MATV/SMATV
System
oulet
Distribution Home network Terminal
Headend
network (HN) equipment
Headend
input
Performance requirements, see Performance requirements, see
Clause 7 of IEC 60728-1:2014 Clause 5 of IEC 60728-1-1:2014
(unimpaired input signals) (unimpaired input signals)
Performance
requirements, see
Performance requirements, see
Clause 6 of IEC
Clause 5 of IEC 60728-1:2014
60728-1:2014
(unimpaired input signals)
IEC  0732/14

Diagram of the main sections of a CATV/MATV/SMATV cable network and the relevant parts
of the IEC 60728-1 series where the requirements are indicated.
Figure 1 – CATV/MATV/SMATV cable network – Performance requirements
This standard also provides references for the basic methods of measurement of the
operational characteristics of the downstream cable network in order to assess its
performance.
All requirements refer to the performance limits to be achi
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