Cable networks for television signals, sound signals and interactive services - Part 13: Optical systems for broadcast signal transmissions

IEC 60728-13:2010 specifies the basic system parameters and methods of measurement for optical distribution system having a system outlet in order to assess the system performance and its performance limits. It describes the system specification of FTTH (fibre to the home) network for broadcast signal transmission. It is also applicable to the broadcast signal transmission using telecommunication network if it satisfies the optical portion of this standard. It describes RF transmission for broadcast and narrowcast (limited area distribution of broadcast) signals over FTTH, and introduces xPON system as a physical layer media. The contents of the corrigendum of August 2010 have been included in this copy.

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 13: Systèmes optiques pour la transmission de signaux de diffusion

L'IEC 60728-13:2010 s'applique à un système de transmission optique pour la transmission de signaux de diffusion, qui se compose de l'équipement de la tête de réseau, des lignes de transmission optique, des câblages internes et d'une prise d'abonné. Le système est principalement prévu pour la télévision et les signaux sonores qui utilisent une technologie de transmission analogique et/ou numérique. La présente norme spécifie les paramètres de base du système et les méthodes de mesure du système de distribution optique équipé d'une prise d'abonné, afin d'évaluer les performances du système et ses limites de performances.
L'IEC 60728-13:2010 a pour objet la description de la spécification système du réseau de desserte par fibre de l'abonné (DFA) pour la transmission de signaux de diffusion. La présente norme s'applique également à la transmission des signaux de diffusion qui utilisent un réseau de télécommunication, si celui-ci respecte la partie de la présente norme consacrée à l'optique. La présente norme décrit la transmission de signaux radioélectriques en tant que signaux de diffusion générale et de diffusion ciblée (distribution de la diffusion dans une zone limitée) 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 de la présente norme. 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, et il convient de se référer à l'Annexe D pour des explications détaillées. L'Annexe A présente des considérations sur les systèmes de services réels et la conception d'après la présente norme. L'Annexe B donne une vue d'ensemble des systèmes de transmission optique applicables à la transmission de signaux de diffusion.

General Information

Status
Published
Publication Date
20-Jan-2010
Current Stage
PPUB - Publication issued
Start Date
31-Jan-2010
Completion Date
21-Jan-2010
Ref Project

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IEC 60728-13 ®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 13: Optical systems for broadcast signal transmissions

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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IEC 60728-13 ®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 13: Optical systems for broadcast signal transmissions

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 33.160.01; 33.180.01 ISBN 978-2-88910-264-8
– 2 – 60728-13 © IEC:2010(E)
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope.8
2 Normative references .8
3 Terms, definitions, symbols and abbreviations.9
3.1 Terms and definitions .9
3.2 Symbols .15
3.3 Abbreviations .16
4 Optical system reference model.17
5 Preparation of measurement .19
5.1 Environmental conditions .19
5.1.1 Standard measurement conditions.19
5.1.2 Temperature and humidity .20
5.1.3 Setting up the measuring setup and system under test .20
5.1.4 AGC operation.20
5.1.5 Impedance matching between pieces of equipment .20
5.1.6 Standard operating condition .20
5.1.7 Standard signal and measuring equipment .20
5.2 Accuracy of measuring equipment.21
5.3 Source power .21
6 Methods of measurement .21
6.1 Measuring points and items.21
6.1.1 General .21
6.1.2 Measuring points .21
6.1.3 Measured parameters.21
6.2 Optical power .22
6.2.1 General .22
6.2.2 Measuring setup .22
6.2.3 Measuring method .23
6.2.4 Precaution for measurement.23
6.2.5 Presentation of the results.24
6.3 Carrier level and carrier-to-noise ratio .24
6.3.1 General .24
6.3.2 Measuring setup .24
6.3.3 Measuring conditions.24
6.3.4 Measuring method for analogue signals (AM-VSB) .24
6.3.5 Measuring method for digitally modulated signals (64 QAM, OFDM) .25
6.3.6 Precautions for measurement .25
6.3.7 Presentation of the results.25
6.4 Carrier-to-noise ratio defined by optical signal.25
6.4.1 General .25
6.4.2 Measuring setup .26
6.4.3 Measuring conditions.27
6.4.4 System RIN measuring method.27
6.4.5 C/N calculation based on RIN value.29
6.4.6 Component RIN calculation .29

60728-13 © IEC:2010(E) – 3 –
6.5 Optical modulation index .31
6.6 Carrier-to-crosstalk ratio (CCR) .31
6.6.1 General .31
6.6.2 Equipment .31
6.6.3 General measurements .32
6.6.4 Procedure.32
6.6.5 Potential sources of error .33
6.6.6 Presentation of the results.33
7 Specification of optical system for broadcast signal transmission .33
7.1 Analogue and digital broadcast system over optical network .33
7.2 International TV systems .34
7.3 Relationship between RIN and C/N.35
7.4 Optical wavelength .36
7.5 Frequency of source signal .36
7.6 Optical system specification for broadcast signal transmission .36
7.7 C/N ratio specification for in-house and in-building wirings .37
7.8 Crosstalk due to optical fibre non-linearity.39
7.9 Single frequency interference level due to fibre non-linearity.40
7.10 Environmental conditions .40
Annex A (informative) Actual service systems and design considerations .41
Annex B (informative) Optical system overview.56
Annex C (informative) Optical system degradations .60
Annex D (normative) Measurement of parameters (R, I , I and G) required for RIN
d0 eq
calculation .66
Bibliography.68

Figure 1 – Optical system reference model for one-fibre solution .18
Figure 2 – Optical system reference model for two-fibres solution.18
Figure 3 – Example of PON triplexer.19
Figure 4 – Performance specified points of the optical system .19
Figure 5 – Typical optical video distribution system.21
Figure 6 – Measurement of optical power using a WDM coupler .23
Figure 7 – Measurement of optical power using a wavelength filter .23
Figure 8 – Arrangement of test equipment for carrier-to-noise ratio measurement.24
Figure 9 – Measuring points in the optical cable TV network .26
Figure 10 – RIN measurement setup.27
Figure 11 – Arrangement of test equipment for measuring other services crosstalk.32
Figure 12 – Performance allocation and measuring points .33
Figure 13 – Section of C/N ratio specification (45 dB) for in-house wiring (specified for
electrical signals).38
Figure 14 – Section of C/N ratio specification for in-house wiring (specified for optical
signals).39
Figure A.1 – Example of a multi-channel service system of one million terminals .41
Figure A.2 – Example of a multi-channel service system of 2 000 terminals .42
Figure A.3 – Example of re-transmission service system of 72 terminals.43
Figure A.4 – Example of re-transmission service system of 144 terminals.43

– 4 – 60728-13 © IEC:2010(E)
Figure A.5 – Model No.1 of a system performance calculation .47
Figure A.6 – Model No.2 of a system performance calculation .48
Figure A.7 – Model No.3 a of system performance calculation .49
Figure A.8 – Model No.4 of a system performance calculation .50
Figure A.9 – Model No.5 of a system performance calculation .51
Figure A.10 – Model No.6 of a system performance calculation .52
Figure A.11 – Model No.7 of system performance calculation .53
Figure B.1 – Topology of optical system .56
Figure B.2 – Network composition.57
Figure B.3 – Example of SS system .58
Figure B.4 – Example of ADS system.58
Figure B.5 – Example of PON system .59
Figure C.1 – Reflection model.
...


IEC 60728-13 ®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 13: Optical systems for broadcast signal transmissions

Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 13: Systèmes optiques pour la transmission de signaux de diffusion

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
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IEC 60728-13 ®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable networks for television signals, sound signals and interactive services –

Part 13: Optical systems for broadcast signal transmissions

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

radiodiffusion sonore et services interactifs –

Partie 13: Systèmes optiques pour la transmission de signaux de diffusion

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.01; 33.180.01 ISBN 978-2-8322-9340-9

– 2 – IEC 60728-13:2010 © IEC 2010
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions, symbols and abbreviations . 9
3.1 Terms and definitions . 9
3.2 Symbols . 15
3.3 Abbreviations . 16
4 Optical system reference model. 17
5 Preparation of measurement . 19
5.1 Environmental conditions . 19
5.1.1 Standard measurement conditions . 19
5.1.2 Temperature and humidity . 19
5.1.3 Setting up the measuring setup and system under test . 19
5.1.4 AGC operation . 19
5.1.5 Impedance matching between pieces of equipment . 19
5.1.6 Standard operating condition . 20
5.1.7 Standard signal and measuring equipment . 20
5.2 Accuracy of measuring equipment . 20
5.3 Source power . 20
6 Methods of measurement . 20
6.1 Measuring points and items . 20
6.1.1 General . 20
6.1.2 Measuring points . 21
6.1.3 Measured parameters . 21
6.2 Optical power . 22
6.2.1 General . 22
6.2.2 Measuring setup . 22
6.2.3 Measuring method . 23
6.2.4 Precaution for measurement . 23
6.2.5 Presentation of the results . 23
6.3 Carrier level and carrier-to-noise ratio . 24
6.3.1 General . 24
6.3.2 Measuring setup . 24
6.3.3 Measuring conditions . 24
6.3.4 Measuring method for analogue signals (AM-VSB) . 24
6.3.5 Measuring method for digitally modulated signals (64 QAM, OFDM) . 24
6.3.6 Precautions for measurement . 24
6.3.7 Presentation of the results . 25
6.4 Carrier-to-noise ratio defined by optical signal . 25
6.4.1 General . 25
6.4.2 Measuring setup . 25
6.4.3 Measuring conditions . 26
6.4.4 System RIN measuring method. 27
6.4.5 C/N calculation based on RIN value . 28
6.4.6 Component RIN calculation . 28

6.5 Optical modulation index . 31
6.6 Carrier-to-crosstalk ratio (CCR) . 31
6.6.1 General . 31
6.6.2 Equipment . 31
6.6.3 General measurements . 31
6.6.4 Procedure . 31
6.6.5 Potential sources of error . 32
6.6.6 Presentation of the results . 32
7 Specification of optical system for broadcast signal transmission . 33
7.1 Analogue and digital broadcast system over optical network . 33
7.2 International TV systems . 33
7.3 Relationship between RIN and C/N. 35
7.4 Optical wavelength . 36
7.5 Frequency of source signal . 36
7.6 Optical system specification for broadcast signal transmission . 36
7.7 C/N ratio specification for in-house and in-building wirings . 37
7.8 Crosstalk due to optical fibre non-linearity . 39
7.9 Single frequency interference level due to fibre non-linearity . 40
7.10 Environmental conditions . 40
Annex A (informative) Actual service systems and design considerations . 41
Annex B (informative) Optical system overview . 56
Annex C (informative) Optical system degradations . 60
Annex D (normative) Measurement of parameters (R, Id0, Ieq and G) required for RIN
calculation . 66
Bibliography . 68

Figure 1 – Optical system reference model for one-fibre solution . 17
Figure 2 – Optical system reference model for two-fibres solution . 18
Figure 3 – Example of PON triplexer .
...

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