IEC 60728-3:2010

Cable networks for television signals, sound signals and interactive services - Part 3: Active wideband equipment for cable networks

IEC 60728-3:2010 lays down the measuring methods, performance requirements and data publication requirements for active wideband equipment of cable networks for television signals, sound signals and interactive services. This fourth edition cancels and replaces the third edition published in 2005 of which it constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition:
- extension of upper frequency range limit for cable network equipment from 862 MHz to 1 000 MHz;
- method of measurement and requirements for immunity to surge voltages;
- extension of scope to equipment using symmetrical ports;
- additional normative references;
- additional terms and definitions and abbreviations. The French version of this standard has not been voted upon.

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 3: Matériel actif à large bande pour réseaux de distribution par câbles

La CEI 60728-3:2010 présente les méthodes de mesure, les exigences de performance et les exigences de publication des données caractéristiques des matériels actifs à large bande des réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs. Cette quatrième édition annule et remplace la troisième édition parue en 2005, dont elle constitue une révision technique. Elle contient les modifications techniques significatives suivantes par rapport à l'édition précédente:
- extension de la limite supérieure de la gamme de fréquences pour les matériels de réseaux de distribution par câbles de 862 MHz à 1 000 MHz;
- méthode de mesure et exigences pour l'immunité aux tensions de choc;
- extension du domaine d'application aux matériels à accès symétriques;
- références normatives supplémentaires;
- termes, définitions et abréviations supplémentaires. La version française de cette norme n'a pas été soumise au vote.

General Information

• Status: Published
• Publication Date: 08-Dec-2010
• ICS: 33.060.40 - Cabled distribution systems
• ICS: 33.170 - Television and radio broadcasting
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 27-Nov-2017

Relations

• Revised: IEC 60728-3:2017 - Cable networks for television signals, sound signals and interactive services - Part 3: Active wideband equipment for cable networks
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60728-3


®

Edition 4.0 2010-12



INTERNATIONAL



STANDARD




colour
inside

Cable networks for television signals, sound signals and interactive services –
Part 3: Active wideband equipment for cable networks




IEC 60728-3:2010(E)

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THIS PUBLICATION IS COPYRIGHT PROTECTED

Copyright © 2010 IEC, Geneva, Switzerland



All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

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IEC 60728-3


®

Edition 4.0 2010-12



INTERNATIONAL



STANDARD




colour
inside

Cable networks for television signals, sound signals and interactive services –
Part 3: Active wideband equipment for cable networks



INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
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ICS 33.060.40; 33.170 ISBN 978-2-88912-251-6
® Registered trademark of the International Electrotechnical Commission

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– 2 – 60728-3 ã IEC:2010(E)



CONTENTS

FO R EW OR D . 6


IN T R OD U CT ION . 8

1 Sc op e . . 9

2 Normative references . 9


3 Terms, definitions, symbols and abbreviations . 11

3.1 Terms and definitions . 11

3.2 Sym bol s . 15

3.3 Abbreviations . 16
4 Methods of measurement . 17
4.1 Ge ne ral . 17
4.2 Linear distortion . 18
4.2.1 Return loss . 18
4.2.2 Flatness . 19
4.2.3 Chrominance/luminance delay inequality for PAL/SECAM only . 19
4.3 Non-linear distortion . 20
4.3.1 General . 20
4.3.2 Types of measurements. 20
4.3.3 Inte r m od ulation . 20
4.3.4 Composite triple beat . 22
4.3.5 Composite second order beat . 25
4.3.6 Com posite crossmodulation . 26
4.3.7 Method of measurement of non-linearity for pure digital channel load . 29
4.3.8 Hum modulation of carrier. 29
4.4 Automatic gain and slope control step response . 33
4.4.1 Def initions . 33
4.4.2 Equipment required . 33
4.4.3 Connection of equipment . 34
4.4.4 Mea surement procedure . 34
4.5 Noise figure . 35
4.5.1 General . 35
4.5.2 Equipment required . 35
4.5.3 Connection of equipment . 35

4.5.4 Mea surement procedure . 35
4.6 Crosstal k attenuation . 36
4.6.1 Crosstalk attenuation for loop through ports. 36
4.6.2 Crosstalk attenuation for output ports . 36
4.7 Signal level for digitally modulated signals . 38
4.8 Measurement of composite intermodulation noise ratio (CINR ) . 38
4.8.1 General . 38
4.8.2 Equipment required . 38
4.8.3 Connection of equipment . 39
4.8.4 Mea surement procedure . 40
4.8.5 Presentation of the results . 40
4.9 Immunity to surge voltages . 41
4.9.1 General . 41
4.9.2 Equipment required . 42

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60728-3 ã IEC:2010(E) – 3 –


4.9.3 Connection of equipment . 42

4.9.4 Mea surement procedure . 42

5 Equipm ent requirem ents . 42


5.1 General requirem ents . 42

5.2 Sa f ety. . 4 3

5.3 Electromagnetic compatibility (EMC) . 43

5.4 Frequency range . 43

5.5 Impedance and return loss . 43

5.6 Ga in . 44


5.6.1 Minimum and maximum gain . 44
5.6.2 Gain control . 44
5.6.3 Slope and slope control . 44
5.7 Fl atness . 44
5.8 Test points . 45
5.9 Group delay. 45
5.9.1 Chrominance/luminance delay inequality . 45
5.9.2 Chrominance/luminance delay inequality for other television
standards and modulation systems . 45
5.10 Noise figure . 45
5.11 Non-linear distortion . 45
5.11.1 General . 45
5.11.2 Second order distortion. 45
5.11.3 Third order distortion . 45
5.11.4 Composite triple beat . 46
5.11.5 Composite second order . 46
5.11.6 Com posite crossmodulation . 46
5.11.7 Maximum operating level for pure digital channel load . 46
5.12 Automatic gain and slope control . 46
5.13 Hum modulation . 46
5.14 Power suppl y . 46
5.15 En vironm ental . 47
5.15.1 General . 47
5.15.2 Storage (simulated effects of) . 47
5.15.3 T ransportation . 47
5.15.4 Installation or maintenance . 47

5.15.5 Operation . 47
5.15.6 Energy efficiency of equipment . 47
5.16 Mar king . 47
5.16.1 Marking of equipment . 47
5.16.2 Marking of ports . 47
5.17 Mean operating time between failure (MTBF) . 48
5.18 Requirements for multi-switches . 48
5.18.1 Control signals for multi-switches . 48
5.18.2 Amplitude frequency response flatness . 48
5.18.3 Return loss . 48
5.18.4 Through loss. 48
5.18.5 Isol ation . 4 8
5.18.6 Crosstalk attenuation . 48
5.18.7 Satellite IF to terrestrial signal isolation . 48

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– 4 – 60728-3 ã IEC:2010(E)


5.19 Immunity to surge voltages . 49

5.19.1 Degrees of testing levels . 49

5.19.2 Recommendation of testing level degree . 49

Annex A (informative) Derivation of non-linear distortion . 50

Annex B (normative) Test carriers, levels and intermodulation products . 52

Annex C (normative) Checks on test equipment . 54

Annex D (informative) Test frequency plan for composite triple beat (CTB), composite
second order (CSO) and crossmodulation (XM) measurement . 55


Annex E (informative) Measurement errors which occur due to mismatched equipment . 56

Annex F (informative) Examples of signals, methods of measurement and network
design for return paths . 57
Bibl iog r ap hy . 64

Figure 1 – Maximum error a for measurement of return loss using VSWR-bridge with
directivity D = 46 dB and 26 dB test port return loss . 18
Figure 2 – Measurement of return loss . 19
Figure 3 – Basic arrangement of test equipment for evaluation of the ratio of signal to
intermodulation product . 21
Figure 4 – Connection of test equipment for the measurement of non-linear distortion
by composite beat . 24
Figure 5 – Connection of test equipment for the measurement of composite
c r ossm od ulation . 28
Figure 6 – Carrier/hum ratio . 30
Figure 7 – Test set-up for local-powered objects . 31
Figure 8 – Test set-up for remote-powered objects . 31
Figure 9 – Oscilloscope display. 32
Figure 10 – Time constant T . 33
c
Figure 11 – Measurement of AGC step response . 34
Figure 12 – Measurement of noise figure . 35
Figure 13 – Measurement of crosstalk attenuation for loop trough ports of multi-
sw itc he s . 3 7
Figure 14 – Characteristic of the noise filter . 39
Figure 15 – Test setup for the non-linearity measurement . 39

Figure 16 – Presentation of the result of CINR . 41
Figure 17 – Measurement set-up for surge immunity test . 42
Figure B.1 – An example showing products formed when 2¦ > ¦ . 5 2
a b
Figure B.2 – An example showing products formed when 2¦ < ¦ . 53
a b
Figure B.3 – Products of the form ¦ ± ¦ ± ¦ . 5 3
a b c
Figure E.1 – Error concerning return loss measurement . 56
Figure E.2 – Maximum ripple . 56
Figure F.1 – Spectrum of a QPSK-modulated signal . 57
Figure F.2 – Measurement of non-linearity using wideband noise. 59
Figure F.3 – Network used in the design example . 60
Figure F.4 – A test result measured from a real 20 dB return amplifier . 61
Figure F.5 – The CINR curve of one amplifier is modified to represent the CINR of the
whole coaxial section of the network . 62

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60728-3 ã IEC:2010(E) – 5 –


Figure F.6 – The CINR of an optical link as a function of OMI, e xam ple . 63




Table 1 – Correction factors where the modulation used is other than 100 % . 26

Table 2 – Notch filter frequencies . 39

Table 3 – Return loss requirements for all equipment. 44


Table 4 – Parameters of surge voltages for different degrees of testing levels . 49

Table 5 – Recommendations for degree of testing levels . 49

Table D.1 – Frequency allocation plan . 55


Table F.1 – Application of methods of measurement in IEC 60728-3 for return path
eq uipm en t . 5 8
Table F.2 – Application of methods of measurement in IEC 60728-6 for return path
eq uipm en t . 5 8

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INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________



CABLE NETWORKS FOR TELEVISION SIGNALS,

SOUND SIGNALS AND INTERACTIVE SERVICES –



Part 3: Active wideband equipment for cable networks





FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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tent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60728-3 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 fourth edition cancels and replaces the third edition published in 2005 of which it consti-
tutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
· extension of upper frequency range limit for cable network equipment from 862 MHz to
1 000 MHz;
· method of measurement and requirements for immunity to surge voltages;
· extension of scope to equipment using symmetrical ports;
· additional normative references;

---------------------- Page: 8 ----------------------
60728-3 ã IEC:2010(E) – 7 –


· additional terms and definitions and abbreviations.


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


FDIS Report on voting

100/1746/FDIS 100/1766/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 tel-
evision 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 re-
lated 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.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understand-
ing of its contents. Users should therefore print this document using a colour printer.

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– 8 – 60728-3 ã IEC:2010(E)


INTRODUCTION


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

ated methods of measurement for headend reception, processing and distribution of television

signals, sound signals and their associated data signals and for processing, interfacing and

transmitting all kinds of signals for interactive services using all applicable transmission me-

dia.


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.
For active equipment with balanced RF signal ports this standard applies to those ports which
carry RF broadband signals for services as described in the scope of this standard.
The extent of this standardization work is from the antennas and/or special signal source in-
puts 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, multimedia termi-
nals, etc.) as well as of any coaxial, balanced and optical cables and accessories thereof is
excluded.

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

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60728-3 ã IEC:2010(E) – 9 –


CABLE NETWORKS FOR TELEVISION SIGNALS,

SOUND SIGNALS AND INTERACTIVE SERVICES –



Part 3: Active wideband equipment for cable networks








1 Scope


This part of IEC 60728 lays down the measuring methods, performance requirements and da-
ta publication requirements for active wideband equipment of cable networks for television
signals, sound signals and interactive services.
This standard
· applies to all broadband amplifiers used in cable networks;
· covers the frequency range 5 MHz to 3 000 MHz;
NOTE The upper limit of 3 000 MHz is an example, but not a strict value. The frequency range, or ranges, over
which the equipment is specified, should be published.
· applies to one-way and two-way equipment;
· lays down the basic methods of measurement of the operational characteristics of the ac-
tive equipment in order to assess the performance of this equipment;
· identifies the performance specifications to be published by the manufacturers;
· states the minimum performance requirements of certain parameters.
Amplifiers are divided into the following two quality levels:
Grade 1: amplifiers typically intended to be cascaded;
Grade 2: amplifiers for use typically within an apartment block, or within a single residence,
to feed a few outlets.
Practical experience has shown that these types meet most of the technical requirements
necessary for supplying a minimum signal quality to the subscribers. This classification is not
a requirement but is provided to users and manufacturers for information about minimum
quality criteria of the material required to install networks of different sizes. The system op-
erator has to select appropriate material to meet the minimum signal quality at the subscrib-
er’s outlet, and to optimise cost/performan
...

IEC 60728-3


®


Edition 4.0 2010-12



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
colour
inside


Cable networks for television signals, sound signals and interactive services –
Part 3: Active wideband equipment for cable networks

Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 3: Matériel actif à large bande pour réseaux de distribution par câbles


IEC 60728-3:2010

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---------------------- Page: 2 ----------------------
IEC 60728-3


®


Edition 4.0 2010-12



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
colour
inside


Cable networks for television signals, sound signals and interactive services –
Part 3: Active wideband equipment for cable networks

Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 3: Matériel actif à large bande pour réseaux de distribution par câbles


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 33.060.40; 33.170 ISBN 978-2-88912-576-0

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

---------------------- Page: 3 ----------------------
– 2 – 60728-3  IEC:2010



CONTENTS

FOREWORD . 6


INTRODUCTION . 8

1 Scope . 9

2 Normative references . 9


3 Terms, definitions, symbols and abbreviations . 11

3.1 Terms and definitions . 11

3.2 Symbols . 15

3.3 Abbreviations . 16
4 Methods of measurement . 17
4.1 General . 17
4.2 Linear distortion . 18
4.2.1 Return loss . 18
4.2.2 Flatness . 19
4.2.3 Chrominance/luminance delay inequality for PAL/SECAM only . 19
4.3 Non-linear distortion . 20
4.3.1 General . 20
4.3.2 Types of measurements . 20
4.3.3 Intermodulation. 20
4.3.4 Composite triple beat . 22
4.3.5 Composite second order beat . 25
4.3.6 Composite crossmodulation . 26
4.3.7 Method of measurement of non-linearity for pure digital channel load . 29
4.3.8 Hum modulation of carrier . 29
4.4 Automatic gain and slope control step response . 33
4.4.1 Definitions . 33
4.4.2 Equipment required . 33
4.4.3 Connection of equipment . 34
4.4.4 Measurement procedure . 34
4.5 Noise figure . 35
4.5.1 General . 35
4.5.2 Equipment required . 35
4.5.3 Connection of equipment . 35

4.5.4 Measurement procedure . 35
4.6 Crosstalk attenuation. 36
4.6.1 Crosstalk attenuation for loop through ports . 36
4.6.2 Crosstalk attenuation for output ports . 36
4.7 Signal level for digitally modulated signals . 38
4.8 Measurement of composite intermodulation noise ratio (CINR) . 38
4.8.1 General . 38
4.8.2 Equipment required . 38
4.8.3 Connection of equipment . 39
4.8.4 Measurement procedure . 40
4.8.5 Presentation of the results . 40
4.9 Immunity to surge voltages . 41
4.9.1 General . 41
4.9.2 Equipment required . 42

---------------------- Page: 4 ----------------------
60728-3  IEC:2010 – 3 –


4.9.3 Connection of equipment . 42

4.9.4 Measurement procedure . 42

5 Equipment requirements . 42


5.1 General requirements . 42

5.2 Safety . 43

5.3 Electromagnetic compatibility (EMC) . 43

5.4 Frequency range . 43

5.5 Impedance and return loss . 43

5.6 Gain . 44


5.6.1 Minimum and maximum gain . 44
5.6.2 Gain control . 44
5.6.3 Slope and slope control . 44
5.7 Flatness . 44
5.8 Test points . 45
5.9 Group delay . 45
5.9.1 Chrominance/luminance delay inequality . 45
5.9.2 Chrominance/luminance delay inequality for other television
standards and modulation systems . 45
5.10 Noise figure . 45
5.11 Non-linear distortion . 45
5.11.1 General . 45
5.11.2 Second order distortion . 45
5.11.3 Third order distortion . 45
5.11.4 Composite triple beat . 46
5.11.5 Composite second order . 46
5.11.6 Composite crossmodulation . 46
5.11.7 Maximum operating level for pure digital channel load . 46
5.12 Automatic gain and slope control . 46
5.13 Hum modulation . 46
5.14 Power supply . 46
5.15 Environmental . 47
5.15.1 General . 47
5.15.2 Storage (simulated effects of) . 47
5.15.3 Transportation . 47
5.15.4 Installation or maintenance . 47

5.15.5 Operation . 47
5.15.6 Energy efficiency of equipment . 47
5.16 Marking . 47
5.16.1 Marking of equipment . 47
5.16.2 Marking of ports . 47
5.17 Mean operating time between failure (MTBF) . 48
5.18 Requirements for multi-switches . 48
5.18.1 Control signals for multi-switches . 48
5.18.2 Amplitude frequency response flatness . 48
5.18.3 Return loss . 48
5.18.4 Through loss . 48
5.18.5 Isolation . 48
5.18.6 Crosstalk attenuation . 48
5.18.7 Satellite IF to terrestrial signal isolation . 48

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5.19 Immunity to surge voltages . 49

5.19.1 Degrees of testing levels . 49

5.19.2 Recommendation of testing level degree . 49

Annex A (informative) Derivation of non-linear distortion . 50

Annex B (normative) Test carriers, levels and intermodulation products . 52

Annex C (normative) Checks on test equipment . 54

Annex D (informative) Test frequency plan for composite triple beat (CTB), composite
second order (CSO) and crossmodulation (XM) measurement . 55


Annex E (informative) Measurement errors which occur due to mismatched equipment . 56

Annex F (informative) Examples of signals, methods of measurement and network
design for return paths . 57
Bibliography . 64

Figure 1 – Maximum error a for measurement of return loss using VSWR-bridge with
directivity D = 46 dB and 26 dB test port return loss . 18
Figure 2 – Measurement of return loss . 19
Figure 3 – Basic arrangement of test equipment for evaluation of the ratio of signal to
intermodulation product . 21
Figure 4 – Connection of test equipment for the measurement of non-linear distortion
by composite beat . 24
Figure 5 – Connection of test equipment for the measurement of composite
crossmodulation. 28
Figure 6 – Carrier/hum ratio . 30
Figure 7 – Test set-up for local-powered objects . 31
Figure 8 – Test set-up for remote-powered objects . 31
Figure 9 – Oscilloscope display . 32
Figure 10 – Time constant T . 33
c
Figure 11 – Measurement of AGC step response . 34
Figure 12 – Measurement of noise figure . 35
Figure 13 – Measurement of crosstalk attenuation for loop trough ports of multi-
switches . 37
Figure 14 – Characteristic of the noise filter . 39
Figure 15 – Test setup for the non-linearity measurement . 39

Figure 16 – Presentation of the result of CINR . 41
Figure 17 – Measurement set-up for surge immunity test . 42
Figure B.1 – An example showing products formed when 2ƒ > ƒ . 52
a b
Figure B.2 – An example showing products formed when 2ƒ < ƒ . 53
a b
Figure B.3 – Products of the form ƒ ± ƒ ± ƒ . 53
a b c
Figure E.1 – Error concerning return loss measurement . 56
Figure E.2 – Maximum ripple . 56
Figure F.1 – Spectrum of a QPSK-modulated signal . 57
Figure F.2 – Measurement of non-linearity using wideband noise . 59
Figure F.3 – Network used in the design example . 60
Figure F.4 – A test result measured from a real 20 dB return amplifier . 61
Figure F.5 – The CINR curve of one amplifier is modified to represent the CINR of the
whole coaxial section of the network . 62

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60728-3  IEC:2010 – 5 –


Figure F.6 – The CINR of an optical link as a function of OMI, example . 63




Table 1 – Correction factors where the modulation used is other than 100 % . 26

Table 2 – Notch filter frequencies . 39

Table 3 – Return loss requirements for all equipment . 44


Table 4 – Parameters of surge voltages for different degrees of testing levels . 49

Table 5 – Recommendations for degree of testing levels . 49

Table D.1 – Frequency allocation plan . 55


Table F.1 – Application of methods of measurement in IEC 60728-3 for return path
equipment . 58
Table F.2 – Application of methods of measurement in IEC 60728-6 for return path
equipment . 58

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INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________



CABLE NETWORKS FOR TELEVISION SIGNALS,

SOUND SIGNALS AND INTERACTIVE SERVICES –



Part 3: Active wideband equipment for cable networks





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 interna-
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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 inter-
ested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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International Standard IEC 60728-3 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 fourth edition cancels and replaces the third edition published in 2005 of which it consti-
tutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• extension of upper frequency range limit for cable network equipment from 862 MHz to
1 000 MHz;
• method of measurement and requirements for immunity to surge voltages;
• extension of scope to equipment using symmetrical ports;
• additional normative references;

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60728-3  IEC:2010 – 7 –


• additional terms and definitions and abbreviations.


This bilingual version, published in 2011-07, corresponds to the English version.


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


FDIS Report on voting

100/1746/FDIS 100/1766/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.
The French version of this standard has not been voted upon.
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 tel-
evision 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 re-
lated to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understand-
ing of its contents. Users should therefore print this document using a colour printer.

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– 8 – 60728-3  IEC:2010


INTRODUCTION


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

ated methods of measurement for headend reception, processing and distribution of television

signals, sound signals and their associated data signals and for processing, interfacing and

transmitting all kinds of signals for interactive services using all applicable transmission me-

dia.


This includes


1
• CATV -networks;

• MATV-netw
...