IEC 60728-1:2014

Cable networks for television signals, sound signals and interactive services - Part 1: System performance of forward paths

IEC 60728-1:2014 is applicable to any cable network (including individual receiving systems) having in the forward path a coaxial cable output and primarily intended for television and sound signals operating between about 30 MHz and 3 000 MHz. It specifies the basic methods of measurement of the operational characteristics of cable network having coaxial cable outputs in order to assess the performance of these systems and their performance limits. This fifth edition cancels and replaces the fourth edition published in 2007 and constitutes a technical revision. It includes the following changes:
- redrafting of measurement procedure and updating of performance requirements to include DVB-T2 signals;
- reference to IEC 60728-1-1 for home networks;
- reference to IEC 60728-1-2 for performance requirements at system outlet in operation.

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 1: Performance des systèmes de voie directe

L'IC 60728-1:2014 est applicable à tout réseau de distribution par câbles (y compris les systèmes de réception individuels) qui comporte, dans la voie directe, une sortie par câble coaxial et destiné principalement aux signaux de télévision et sonores fonctionnant entre environ 30 MHz et 3 000 MHz.
L'IC 60728-1:2014 spécifie les méthodes de mesure de base des caractéristiques de fonctionnement des réseaux de distribution par câbles ayant des sorties en câble coaxial afin d'évaluer la performance de ces systèmes et leurs limites de performance.
L'IC 60728-1:2014 annule et remplace la quatrième édition parue en 2007, et constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- reformulation du mode opératoire de mesure pour inclure les signaux DVB-T2;
- mise à jour des exigences de performance à l’Article 5 pour inclure celles relatives aux signaux DVB-T2;
- mise à jour des exigences de performance à l’Article 6 pour inclure celles relatives aux signaux DVB-T2;
- mise à jour des exigences de performance à l’Article 7 pour inclure celles relatives aux signaux DVB-T2;
- référence à l’IEC 60728-1-1 pour les réseaux domestiques;
- référence à l’IEC 60728-1-2 pour les exigences de performances à la prise terminale en fonctionnement.

General Information

• Status: Published
• Publication Date: 22-May-2014
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.060.40 - Cabled distribution systems
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Drafting Committee: WG 7 - TC 100/TA 5/WG 7
• Current Stage: PPUB - Publication issued
• Start Date: 15-Apr-2014
• Completion Date: 23-May-2014

Relations

• Revises: IEC 60728-1:2007 - Cable networks for television signals, sound signals and interactive services - Part 1: System performance of forward paths
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60728-1 ®
Edition 5.0 2014-05
INTERNATIONAL
STANDARD
Cable networks for television signals, sound signals and interactive services –
Part 1: System performance of forward paths

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 more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 14
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical 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 More than 55 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been 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 60728-1 ®
Edition 5.0 2014-05
INTERNATIONAL
STANDARD
Cable networks for television signals, sound signals and interactive services –

Part 1: System performance of forward paths

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XG
ICS 33.060.40 ISBN 978-2-8322-1619-4

– 2 – IEC 60728-1:2014 © IEC 2014
CONTENTS
FOREWORD . 10
INTRODUCTION . 12
1 Scope . 13
2 Normative references . 13
3 Terms, definitions, symbols and abbreviations . 15
3.1 Terms and definitions . 15
3.2 Symbols . 27
3.3 Abbreviations . 29
4 Methods of measurement at system outlet . 31
4.1 Performance limits . 31
4.2 Mutual isolation between system outlets . 33
4.2.1 Overview . 33
4.2.2 Equipment required . 33
4.2.3 Connection of the equipment . 34
4.2.4 Measurement procedure . 34
4.2.5 Presentation of the results . 35
4.3 Amplitude response within a channel . 35
4.3.1 Overview . 35
4.3.2 Equipment required . 35
4.3.3 Connection of the equipment . 35
4.3.4 Measurement procedure . 36
4.3.5 Presentation of the results . 37
4.4 Chrominance-luminance gain and delay inequalities . 38
4.4.1 Overview . 38
4.4.2 Equipment required . 39
4.4.3 Connection of the equipment . 39
4.4.4 Measurement procedure . 39
4.4.5 Presentation of the results . 40
4.5 Non-linear distortion. 41
4.5.1 General . 41
4.5.2 Intermodulation . 41
4.5.3 Composite beat . 41
4.5.4 Composite crossmodulation . 45
4.5.5 Intermodulation noise . 46
4.5.6 Hum modulation of carriers . 46
4.5.7 Differential gain and phase . 51
4.6 Carrier-to-noise ratio . 56
4.6.1 Overview . 56
4.6.2 Equipment required . 56
4.6.3 Connection of the equipment . 56
4.6.4 Measurement set-up . 57
4.6.5 Measurement procedure . 57
4.6.6 Presentation of the results . 58
4.7 Echoes . 58
4.7.1 Overview . 58
4.7.2 Equipment required . 59

4.7.3 Connection of the equipment . 59
4.7.4 Measurement procedure . 59
4.7.5 Presentation of the results . 60
4.8 AM-VSB television, FM radio and FM television signal level . 60
4.8.1 General . 60
4.8.2 Definitions for NTSC, PAL and SECAM systems . 60
4.8.3 Equipment required . 60
4.8.4 Measurement procedure . 60
4.8.5 Presentation of the results . 61
4.9 Data echo rating and data delay inequality . 61
4.10 Interference in FM sound radio channels . 61
4.11 Methods of measurement for digitally modulated signals . 61
4.11.1 Overview . 61
4.11.2 Basic assumptions and measurement interfaces . 62
4.11.3 Signal level for digitally modulated signals . 65
4.11.4 RF signal-to-noise ratio S /N for digitally modulated
D,RF
signals . 66
4.11.5 Bit error ratio (BER) . 68
4.11.6 BER versus E /N or C/N . 69
b 0
4.11.7 Noise margin . 73
4.11.8 Modulation error ratio (MER) . 74
4.11.9 Phase jitter . 76
4.11.10 Phase noise of an RF carrier . 79
5 Performance requirements at system outlet . 82
5.1 General . 82
5.2 Impedance . 82
5.3 Requirements at the terminal input . 82
5.3.1 General . 82
5.3.2 Signal level . 83
5.3.3 Other parameters . 83
5.4 Carrier levels at system outlets . 83
5.4.1 Minimum and maximum carrier levels . 83
5.4.2 Carrier level differences . 85
5.5 Mutual isolation between system outlets . 86
5.5.1 Isolation between two subscribers . 86
5.5.2 Isolation between individual outlets in one household . 86
5.5.3 Isolation between forward and return path . 86
5.6 Frequency response within a television channel at any system outlet . 87
5.6.1 Amplitude response . 87
5.6.2 Group delay . 87
5.7 Long-term frequency stability of distributed carrier signals at any system
outlet . 88
5.8 Random noise . 89
5.9 Interference to television channels . 91
5.9.1 Single-frequency interference . 91
5.9.2 Single-channel intermodulation interference . 92
5.9.3 Multiple frequency intermodulation interference . 92
5.9.4 Intermodulation noise . 92
5.9.5 Cross-modulation . 93

– 4 – IEC 60728-1:2014 © IEC 2014
5.10 Video baseband requirements . 93
5.10.1 Differential gain and phase in any television channel . 93
5.10.2 Echoes . 93
5.11 Hum modulation of carriers in television channels . 93
5.12 Requirements for data signal transmission . 94
5.12.1 Data signals carried in the structure of a television signal . 94
5.12.2 Data signals other than those carried within the structure of a
television signal . 94
5.13 Digitally modulated signals – Additional performance requirements . 94
5.13.1 DVB (PSK, QAM, OFDM) performance . 94
5.13.2 NICAM performance . 96
5.13.3
...

IEC 60728-1 ®
Edition 5.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –
Part 1: System performance of forward paths

Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 1: Performance des systèmes de voie directe

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.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
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 Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

need further assistance, please contact the Customer Service

Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Electropedia - www.electropedia.org
webstore.iec.ch/advsearchform Le premier dictionnaire d'électrotechnologie en ligne au
La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en
en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire
projets et les publications remplacées ou retirées. Electrotechnique International (IEV) en ligne.

IEC Just Published - webstore.iec.ch/justpublished Glossaire IEC - std.iec.ch/glossary
Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais
Published détaille les nouvelles publications parues. et en français, extraites des articles Termes et Définitions des
Disponible en ligne et une fois par mois par email. publications IEC parues depuis 2002. Plus certaines entrées
antérieures extraites des publications des CE 37, 77, 86 et
Service Clients - webstore.iec.ch/csc CISPR de l'IEC.

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 60728-1 ®
Edition 5.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –

Part 1: System performance of forward paths

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

radiodiffusion sonore et services interactifs –

Partie 1: Performance des systèmes de voie directe

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.060.40 ISBN 978-2-8322-8900-6

– 2 – IEC 60728-1:2014 © IEC 2014
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 11
2 Normative references . 11
3 Terms, definitions, symbols and abbreviations . 13
3.1 Terms and definitions . 13
3.2 Symbols . 25
3.3 Abbreviations . 26
4 Methods of measurement at system outlet . 28
4.1 Performance limits . 28
4.2 Mutual isolation between system outlets . 30
4.3 Amplitude response within a channel . 32
4.4 Chrominance-luminance gain and delay inequalities . 35
4.5 Non-linear distortion. 38
4.6 Carrier-to-noise ratio . 53
4.7 Echoes . 55
4.8 AM-VSB television, FM radio and FM television signal level . 57
4.9 Data echo rating and data delay inequality . 58
4.10 Interference in FM sound radio channels . 58
4.11 Methods of measurement for digitally modulated signals . 58
5 Performance requirements at system outlet . 79
5.1 General . 79
5.2 Impedance . 79
5.3 Requirements at the terminal input . 79
5.4 Carrier levels at system outlets . 80
5.5 Mutual isolation between system outlets . 83
5.6 Frequency response within a television channel at any system outlet . 84
5.7 Long-term frequency stability of distributed carrier signals at any system
outlet . 85
5.8 Random noise . 86
5.9 Interference to television channels . 88
5.10 Video baseband requirements . 90
5.11 Hum modulation of carriers in television channels . 90
5.12 Requirements for data signal transmission . 91
5.13 Digitally modulated signals – Additional performance requirements . 91
5.14 FM sound radio – Additional performance requirements . 94
6 Performance requirements at receiving antennas . 94
6.1 General . 94
6.2 Method of measurement of field strength . 95
6.3 Requirements . 97
6.4 Interference reduction . 104
7 Performance requirements at home network interfaces of cable networks. 104
7.1 General . 104
7.2 Requirements at HNI1 for passive coaxial home networks . 105
7.3 Requirements at HNI2 for active coaxial home networks . 111
7.4 Requirements at HNI3 and at system outlet or terminal input when the
home network is mainly of balanced type . 119

7.5 Requirements at HNI3 (Case C) . 121
7.6 Requirements at HNI3 (Case D) . 121
Annex A (informative) Reception of television signals . 122
Annex B (normative) Calibration of modulation depth . 127
B.1 Equipment required . 127
B.2 Connection of the equipment . 127
B.3 Calibration procedure . 127
Annex C (normative) Equipment required – Additional items . 128
C.1 Measuring receiver preamplifier . 128
C.2 Measuring receiver input filter . 128
Annex D (normative) Preliminary checks on the measuring equipment for carrier-to-

noise ratio . 129
D.1 Noise . 129
D.2 Intermodulation . 129
D.3 Overload . 129
Annex E (normative) Correction factors. 130
E.1 Level correction factor C . 130
m
E.2 Bandwidth correction factor C . 130
b
Annex F (normative) Calibration of the measuring receiver . 131
Annex G (normative) Correction factors for noise . 132
G.1 Signal level measurement . 132
G.2 Noise level measurement . 132
Annex H (normative) Null packet and PRBS definitions . 134
H.1 Null packet definition. 134
H.2 PRBS definition. 135
Annex I (normative) Digital signal level and bandwidth . 136
I.1 RF/IF power (carrier) . 136
I.2 Bandwidth of a digital signal . 136
I.3 Examples .
...