IEC 60728-113:2018
(Main)Cable networks for television signals, sound signals and interactive services - Part 113: Optical systems for broadcast signal transmissions loaded with digital channels only
Cable networks for television signals, sound signals and interactive services - Part 113: Optical systems for broadcast signal transmissions loaded with digital channels only
IEC 60728-113:2018 is applicable to optical transmission systems for broadcast signal transmission that consist of headend equipment, optical transmission lines, in-house wirings and system outlets. These systems are primarily intended for television and sound signals using digital transmission technology. This document specifies the basic system parameters and methods of measurement for optical distribution systems between headend equipment and system outlets in order to assess the system performance and its performance limits.
In this document, the upper signal frequency is limited at about 1 000 MHz. For systems requiring more bandwidth, refer to IEC 60728-13-1.
The purpose of this part of IEC 60728 is to describe the system specifications of FTTH (fibre to the home) networks for digitally modulated broadcast signal transmission. This document is also applicable to broadcast signal transmission using a telecommunication network if it satisfies the optical portion of this document. This document describes RF transmission for fully digitalized broadcast and narrowcast (limited area distribution of broadcast) signals over FTTH, and introduces xPON system as a physical layer media. The detailed description of the physical layer is out of the scope of this document. The scope is limited to RF signal transmission over FTTH, thus, it does not include IP transport technologies, such as IP Multicast and associate protocols.
Some interference descriptions between the telecommunication system and the broadcast system are addressed in Clause 7.
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 113 : Systèmes optiques pour transmissions de signaux radiodiffusés soumis à une charge de porteuses exclusivement numériques
IEC 60728-113:2018 s'applique aux systèmes de transmission optique pour la transmission de signaux de diffusion, qui se composent de l'équipement de la tête de réseau, des lignes de transmission optique, des câblages internes et des prises d'abonnés. Ces systèmes sont principalement prévus pour la télévision et les signaux sonores utilisant une technologie de transmission numérique. Le présent document spécifie les paramètres de base du système et les méthodes de mesure des systèmes de distribution optique entre l'équipement de la tête de réseau et les prises d'abonnés, afin d'évaluer les performances du système et ses limites de performances.
Dans le présent document, la fréquence supérieure du signal est limitée à 1 000 MHz environ. Se reporter à l'IEC 60728-13-1 pour les systèmes qui exigent davantage de bande passante.
La présente partie de l'IEC 60728 a pour objet la description des spécifications des systèmes des réseaux de desserte par fibre de l'abonné (DFA) pour la transmission de signaux de diffusion à modulation numérique. Le présent document s'applique également à la transmission des signaux de diffusion utilisant un réseau de télécommunication, si celui-ci respecte la portion du présent document consacrée à l'optique. Le présent document décrit la transmission de signaux radiofréquence en tant que signaux de diffusion générale et de diffusion ciblée (distribution de la diffusion dans une zone limitée) entièrement numérisés sur le réseau de desserte par fibre de l'abonné et introduit le système xPON comme support de la couche physique. La description précise de la couche physique ne fait pas partie du domaine d'application du présent document. Le domaine d'application se limitant à la transmission des signaux RF sur les réseaux de desserte par fibre de l'abonné, les technologies de transport par protocole Internet (IP), comme la multidiffusion IP et les protocoles associés, ne sont donc pas incluses.
Certaines descriptions des interférences entre le système de télécommunication et le système de diffusion sont couvertes par l'Article 7.
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IEC 60728-113 ®
Edition 1.0 2018-07
INTERNATIONAL
STANDARD
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 113: Optical systems for broadcast signal transmissions loaded with digital
channels only
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
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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
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IEC 60728-113 ®
Edition 1.0 2018-07
INTERNATIONAL
STANDARD
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 113: Optical systems for broadcast signal transmissions loaded with digital
channels only
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.060.40 ISBN 978-2-8322-5844-6
– 2 – IEC 60728-113:2018 © IEC 2018
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms, definitions, graphical symbols and abbreviated terms . 11
3.1 Terms and definitions. 11
3.2 Graphical symbols . 16
3.3 Abbreviated terms . 17
4 Optical system reference model . 19
5 Preparation of measurement . 22
5.1 Environmental conditions . 22
5.1.1 Standard measurement conditions . 22
5.1.2 Temperature and humidity . 22
5.1.3 Setting up the measuring setup and system under test . 22
5.1.4 AGC/ALC operation . 22
5.1.5 Impedance matching between pieces of equipment . 22
5.1.6 Standard operating condition . 22
5.1.7 Standard signal and measuring equipment . 23
5.2 Accuracy of measuring equipment . 23
5.3 Source power . 23
6 Methods of measurement . 23
6.1 Measuring points and items . 23
6.1.1 General . 23
6.1.2 Measuring points . 23
6.1.3 Measured parameters . 23
6.2 Optical power . 25
6.2.1 Introduction . 25
6.2.2 Measuring setup . 25
6.2.3 Measuring method . 25
6.2.4 Precautions for measurement . 26
6.2.5 Presentation of the results . 26
6.3 Signal level and RF signal to intermodulation and noise ratio S/IN . 26
6.3.1 General . 26
6.3.2 Measuring setup . 26
6.3.3 Measuring conditions . 27
6.3.4 Precautions for measurement . 27
6.3.5 Presentation of the results . 28
6.4 Signal-to-noise ratio of optical signals . 28
6.4.1 General . 28
6.4.2 Measuring setup . 28
6.4.3 Measurement conditions . 29
6.4.4 System RIN measuring method . 29
6.4.5 S/N calculation based on RIN value . 30
6.4.6 Component RIN calculation . 31
6.4.7 Example for calculating signal-to-noise ratio S/N . 32
6.5 Optical modulation index . 33
6.6 Signal-to-crosstalk ratio (SCR) . 33
6.6.1 General . 33
6.6.2 Equipment required . 33
6.6.3 General measurement requirements . 34
6.6.4 Procedure . 34
6.6.5 Potential sources of error . 35
6.6.6 Presentation of the results . 35
6.7 RF signal-to-intermodulation and noise ratio S/IN . 35
6.7.1 General . 35
6.7.2 Equipment required . 35
6.7.3 Connection of the equipment . 36
6.7.4 Measurement procedure . 36
6.7.5 Presentation of the results . 37
6.8 Bit error ratio (BER) . 37
6.8.1 General . 37
6.8.2 Connection of the equipment . 37
6.8.3 Measurement procedure . 38
6.8.4 Presentation of the results . 38
6.9 BER versus S/N . 38
6.9.1 General . 38
6.9.2 Connection of the equipment . 38
6.9.3 Measurement procedure . 39
6.9.4 Presentation of the results . 39
6.10 System noise margins . 40
6.10.1 General . 40
6.10.2 Connection of the equipment . 40
6.10.3 Measurement procedure . 41
6.10.4 Presentation of the results . 41
6.11 Modulation error ratio (MER) . 42
6.11.1 General . 42
6.11.2 Connection of the equipment . 42
6.11.3 Measurement procedure . 43
6.11.4 Presentation of the results . 43
7 Specification of the optical system for broadcast signal transmission . 43
7.1 Digital broadcast system over optical network . 43
7.2 Relationship between RIN and S/N . 47
7.3 Optical wavelength . 49
7.4 Frequency of source signal . 49
7.5 Level difference between adjacent channels . 49
7.6 BER at headend input . 51
7.7 MER . 51
7.8 S/N specification for in-house and in-building wirings . 51
7.9 Electrical signal interference . 52
7.10 Crosstalk due to optical fibre non-linearity . 56
7.11 Interference due to intermodulation noise caused by fibre non-linearity. 56
7.12 Environmental conditions . 57
Annex A (informative) Actual service systems and design considerations . 58
A.1 General .
...
IEC 60728-113 ®
Edition 1.0 2018-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 113: Optical systems for broadcast signal transmissions loaded with digital
channels only
Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 113: Systèmes optiques pour la transmission de signaux de diffusion
soumis à une charge de porteuses exclusivement numériques
IEC 660728-113:2018-07(en-fr)
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.
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3, rue de Varembé info@iec.ch
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 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 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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IEC 60728-113 ®
Edition 1.0 2018-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 113: Optical systems for broadcast signal transmissions loaded with digital
channels only
Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 113: Systèmes optiques pour la transmission de signaux de diffusion
soumis à une charge de porteuses exclusivement numériques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.060.40 ISBN 978-2-8322-6337-2
– 2 – IEC 60728-113:2018 © IEC 2018
CONTENTS
FOREWORD. 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms, definitions, graphical symbols and abbreviated terms . 11
3.1 Terms and definitions . 11
3.2 Graphical symbols . 16
3.3 Abbreviated terms . 17
4 Optical system reference model . 19
5 Preparation of measurement . 21
5.1 Environmental conditions . 21
5.1.1 Standard measurement conditions . 21
5.1.2 Temperature and humidity . 21
5.1.3 Setting up the measuring setup and system under test . 21
5.1.4 AGC/ALC operation . 21
5.1.5 Impedance matching between pieces of equipment . 21
5.1.6 Standard operating condition . 21
5.1.7 Standard signal and measuring equipment . 22
5.2 Accuracy of measuring equipment . 22
5.3 Source power . 22
6 Methods of measurement . 22
6.1 Measuring points and items . 22
6.1.1 General . 22
6.1.2 Measuring points . 22
6.1.3 Measured parameters . 22
6.2 Optical power . 24
6.2.1 Introduction . 24
6.2.2 Measuring setup . 24
6.2.3 Measuring method . 24
6.2.4 Precautions for measurement . 25
6.2.5 Presentation of the results . 25
6.3 Signal level and RF signal to intermodulation and noise ratio S/IN . 25
6.3.1 General . 25
6.3.2 Measuring setup . 25
6.3.3 Measuring conditions . 26
6.3.4 Precautions for measurement . 26
6.3.5 Presentation of the results . 27
6.4 Signal-to-noise ratio of optical signals. 27
6.4.1 General . 27
6.4.2 Measuring setup . 27
6.4.3 Measurement conditions . 28
6.4.4 System RIN measuring method . 28
6.4.5 S/N calculation based on RIN value . 29
6.4.6 Component RIN calculation . 30
6.4.7 Example for calculating signal-to-noise ratio S/N . 31
6.5 Optical modulation index . 32
6.6 Signal-to-crosstalk ratio (SCR) . 32
6.6.1 General . 32
6.6.2 Equipment required . 32
6.6.3 General measurement requirements . 33
6.6.4 Procedure . 33
6.6.5 Potential sources of error . 34
6.6.6 Presentation of the results . 34
6.7 RF signal-to-intermodulation and noise ratio S/IN . 34
6.7.1 General . 34
6.7.2 Equipment required . 34
6.7.3 Connection of the equipment . 35
6.7.4 Measurement procedure . 35
6.7.5 Presentation of the results . 36
6.8 Bit error ratio (BER) . 36
6.8.1 General . 36
6.8.2 Connection of the equipment . 36
6.8.3 Measurement procedure . 37
6.8.4 Presentation of the results . 37
6.9 BER versus S/N . 37
6.9.1 General .
...
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