Cable networks for television signals, sound signals and interactive services - Part 101: System performance of forward paths loaded with digital channels only

IEC 60728-101:2016 is applicable to any cable network (including individual receiving systems) distributing only digital channels 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. This standard specifies the basic methods of measurement of the operational characteristics of a cable network having coaxial cable outputs in order to assess the performance of these systems and their performance limits.

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services intéractifs - Partie 101: Performances des systèmes de voie directe soumis à une charge de porteuses exclusivement numériques

L'IEC 60728-101:2016 s'applique aux réseaux de distribution par câbles (y compris les systèmes individuels de réception) distribuant uniquement des canaux numériques, comportant dans le sens descendant une sortie à câble coaxial et essentiellement destinés aux signaux de télévision et aux signaux de radiodiffusion sonore, fonctionnant approximativement entre 30 MHz et 3 000 MHz. La présente norme spécifie les méthodes fondamentales pour la mesure des caractéristiques opérationnelles d'un réseau de distribution par câbles comportant des sorties à câbles coaxiaux dans le but d'évaluer la performance de ces systèmes ainsi que leurs limites de performances.

General Information

Status
Published
Publication Date
26-Apr-2016
Current Stage
PPUB - Publication issued
Start Date
27-Apr-2016
Completion Date
27-Apr-2016
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IEC 60728-101
Edition 1.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable networks for television signals,sound signals and interactive services –
Part 101: System performance of forward paths loaded with digital channels only
Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services intéractifs –
Partie 101: Performances des systèmes de voie directe soumis à une charge de
porteuses exclusivement numériques
IEC 60728-101:2016-04(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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---------------------- Page: 2 ----------------------
IEC 60728-101
Edition 1.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable networks for television signals,sound signals and interactive services –
Part 101: System performance of forward paths loaded with digital channels only
Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services intéractifs –
Partie 101: Performances des systèmes de voie directe soumis à une charge de
porteuses exclusivement numériques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.040.20; 33.160.01 ISBN 978-2-8322-3288-0

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
---------------------- Page: 3 ----------------------
– 2 – IEC 60728-101:2016 © IEC 2016
CONTENTS

FOREWORD......................................................................................................................... 8

INTRODUCTION ................................................................................................................. 10

1 Scope .......................................................................................................................... 15

2 Normative references .................................................................................................. 15

3 Terms, definitions, symbols and abbreviations .............................................................. 17

3.1 Terms and definitions .......................................................................................... 17

3.2 Symbols .............................................................................................................. 29

3.3 Abbreviations ...................................................................................................... 31

4 Methods of measurement at system outlet .................................................................... 33

4.1 General ............................................................................................................... 33

4.2 Basic assumptions and measurement interfaces .................................................. 34

4.3 Signal level ......................................................................................................... 37

4.3.1 General ....................................................................................................... 37

4.3.2 Equipment required ...................................................................................... 38

4.3.3 Connection of the equipment ........................................................................ 38

4.3.4 Measurement procedure ............................................................................... 38

4.3.5 Presentation of the results ............................................................................ 39

4.4 RF signal-to-intermodulation and noise ratio S/IN ................................................. 39

4.4.1 General ....................................................................................................... 39

4.4.2 Equipment required ...................................................................................... 39

4.4.3 Connection of the equipment ........................................................................ 40

4.4.4 Measurement procedure ............................................................................... 40

4.4.5 Presentation of the results ............................................................................ 40

4.5 Bit error ratio (BER) ............................................................................................. 40

4.5.1 General ....................................................................................................... 40

4.5.2 Equipment required ...................................................................................... 41

4.5.3 Connection of the equipment ........................................................................ 41

4.5.4 Measurement procedure ............................................................................... 41

4.5.5 Presentation of the results ............................................................................ 42

4.6 BER versus S/N .................................................................................................... 42

4.6.1 General ....................................................................................................... 42

4.6.2 Equipment required ...................................................................................... 42

4.6.3 Connection of the equipment ........................................................................ 43

4.6.4 Measurement procedure ............................................................................... 43

4.6.5 Presentation of the results ............................................................................ 44

4.7 System operating levels and margins ................................................................... 45

4.7.1 General ....................................................................................................... 45

4.7.2 White noise signal margin (SM ) ............................................................... 47

4.7.3 Intermodulation noise signal margin (SM ) .................................................. 48

4.8 Modulation error ratio (MER) ................................................................................ 50

4.8.1 General ....................................................................................................... 50

4.8.2 Equipment required ...................................................................................... 50

4.8.3 Connection of the equipment ........................................................................ 50

4.8.4 Measurement procedure ............................................................................... 51

4.8.5 Presentation of the results ............................................................................ 52

4.9 Phase jitter ......................................................................................................... 52

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IEC 60728-101:2016 © IEC 2016 – 3 –

4.9.1 General ....................................................................................................... 52

4.9.2 Equipment required ...................................................................................... 52

4.9.3 Connection of the equipment ........................................................................ 53

4.9.4 Measurement procedures ............................................................................. 53

4.9.5 Presentation of the results ............................................................................ 55

4.10 Phase noise of an RF carrier ............................................................................... 55

4.10.1 General ....................................................................................................... 55

4.10.2 Equipment required ...................................................................................... 55

4.10.3 Connection of the equipment ........................................................................ 56

4.10.4 Measurement procedure ............................................................................... 56

4.10.5 Presentation of the results ............................................................................ 57

4.11 Mutual isolation between system outlets .............................................................. 58

4.11.1 General ....................................................................................................... 58

4.11.2 Equipment required ...................................................................................... 58

4.11.3 Connection of the equipment ........................................................................ 58

4.11.4 Measurement procedure ............................................................................... 58

4.11.5 Presentation of the results ............................................................................ 59

4.12 Amplitude response within a channel ................................................................... 59

4.12.1 General ....................................................................................................... 59

4.12.2 Equipment required ...................................................................................... 59

4.12.3 Connection of the equipment ........................................................................ 60

4.12.4 Measurement procedure ............................................................................... 60

4.12.5 Presentation of the results ............................................................................ 62

4.13 Non-linear distortion ............................................................................................ 62

4.13.1 General ....................................................................................................... 62

4.13.2 Intermodulation ............................................................................................ 62

4.13.3 Composite crossmodulation .......................................................................... 62

5 Performance requirements at system outlet .................................................................. 62

5.1 General requirements .......................................................................................... 62

5.2 Overview ............................................................................................................ 62

5.3 Impedance .......................................................................................................... 62

5.4 Requirements at the terminal input ...................................................................... 63

5.4.1 General ....................................................................................................... 63

5.4.2 Signal level .................................................................................................. 63

5.4.3 Other parameters ......................................................................................... 63

5.5 RF signal levels at system outlets ........................................................................ 63

5.5.1 Minimum and maximum RF signal levels....................................................... 63

5.5.2 RF signal level differences ........................................................................... 65

5.6 Mutual isolation between system outlets .............................................................. 66

5.6.1 Isolation between two subscribers ................................................................ 66

5.6.2 Isolation between individual outlets in one household ................................... 66

5.6.3 Isolation between forward and return paths ................................................... 66

5.7 Frequency response within a television channel at any system outlet ................... 67

5.7.1 Amplitude response ..................................................................................... 67

5.7.2 Group delay ................................................................................................. 67

5.8 Long-term frequency stability of distributed signals at any system outlet ............... 68

5.9 Random noise ..................................................................................................... 69

5.10 Interference to television channels ...................................................................... 71

5.10.1 Single-frequency interference ....................................................................... 71

---------------------- Page: 5 ----------------------
– 4 – IEC 60728-101:2016 © IEC 2016

5.10.2 Intermodulation noise ................................................................................... 71

5.11 DVB (PSK, QAM, OFDM) additional performance requirements ............................ 71

5.11.1 BER ............................................................................................................. 71

5.11.2 PER ............................................................................................................. 71

5.11.3 White noise signal margin (SM ) ............................................................... 71

5.11.4 Intermodulation noise signal margin (SM ) .................................................. 72

5.11.5 MER ............................................................................................................. 72

5.11.6 Phase noise of a DVB signal ........................................................................ 72

5.12 DAB performance ................................................................................................ 73

6 Performance requirements at receiving antennas ......................................................... 74

6.1 General ............................................................................................................... 74

6.2 Method of measurement of field strength ............................................................. 74

6.2.1 General ....................................................................................................... 74

6.2.2 Equipment required ...................................................................................... 74

6.2.3 Connection of the equipment ........................................................................ 74

6.2.4 Measurement procedure ............................................................................... 75

6.2.5 Presentation of the results ............................................................................ 75

6.3 Requirements ...................................................................................................... 75

6.3.1 General ....................................................................................................... 75

6.3.2 Field strength requirements .......................................................................... 76

6.3.3 Quality of received signals ........................................................................... 77

6.3.4 Safety .......................................................................................................... 80

6.3.5 Electromagnetic compatibility (EMC) ............................................................ 80

6.4 Interference reduction ......................................................................................... 80

6.4.1 General ....................................................................................................... 80

6.4.2 Active antennas ........................................................................................... 80

7 Performance requirements at home network interfaces of cable networks ..................... 80

7.1 General ............................................................................................................... 80

7.2 Requirements at HNI1 for passive coaxial home networks .................................... 81

7.2.1 General ....................................................................................................... 81

7.2.2 Signal levels at the HNI1 .............................................................................. 82

7.2.3 Mutual isolation between two HNI1 ............................................................... 84

7.2.4 Frequency response within any television channel at the HNI1 ...................... 84

7.2.5 Long-term frequency stability of distributed RF signals at HNI1 ..................... 85

7.2.6 Random noise at the HNI1 ........................................................................... 85

7.2.7 Interference to television channels at the HNI1 ............................................. 85

7.2.8 Return path requirements at the HNI1........................................................... 86

7.3 Requirements at HNI2 for active coaxial home networks ...................................... 86

7.3.1 General ....................................................................................................... 86

7.3.2 RF signal levels at the HNI2 ......................................................................... 86

7.3.3 Mutual isolation between two HNI2 ............................................................... 89

7.3.4 Frequency response within any television channel at the HNI2 ...................... 89

7.3.5 Long-term frequency stability of distributed RF signals at HNI2 ..................... 90

7.3.6 Random noise at HNI2 ................................................................................. 90

7.3.7 Interference to television channels at the HNI2 ............................................. 92

7.3.8 Return path requirements at the HNI2........................................................... 93

7.4 Requirements at HNI3 and at system outlet or terminal input when the home

network is mainly of balanced type ...................................................................... 93

---------------------- Page: 6 ----------------------
IEC 60728-101:2016 © IEC 2016 – 5 –

7.4.1 General ....................................................................................................... 93

7.4.2 Requirements at HNI3 .................................................................................. 93

7.4.3 Requirements at system output .................................................................... 93

7.4.4 Additional requirements at HNI3 for upstream transmission ........................... 94

7.5 Requirements at HNI3 (case C) ........................................................................... 94

7.6 Requirements at HNI3 (case D) ........................................................................... 94

Annex A (normative) Correction factors for noise ................................................................ 96

A.1 Signal level measurement ................................................................................... 96

A.2 Noise level measurement .................................................................................... 96

Annex B (normative) Null packet and PRBS definitions ....................................................... 98

B.1 Null packet definition ........................................................................................... 98

B.2 PRBS definition ................................................................................................... 99

Annex C (normative) Digital signal level and bandwidth .................................................... 100

C.1 RF/IF power ("carrier") ...................................................................................... 100

C.2 Bandwidth of a digital signal .............................................................................. 100

C.2.1 Occupied bandwidth ................................................................................... 100

C.2.2 Noise bandwidth ........................................................................................ 101

C.2.3 Equivalent signal bandwidth ....................................................................... 101

C.3 Examples .......................................................................................................... 102

Annex D (normative) Correction factor for a spectrum analyser ......................................... 103

Annex E (informative) Differences in some countries ........................................................ 104

E.1 Subclause 3.1.48, Norway ................................................................................. 104

E.2 Subclause 5.5.1, Japan ..................................................................................... 104

E.3 Subclause 5.5.2, Japan ..................................................................................... 104

E.4 Subclause 5.6.1, Japan ..................................................................................... 105

E.5 Subclause 5.7.1, Japan ..................................................................................... 105

E.6 Subclause 5.7.2 Japan ...................................................................................... 105

E.7 Subclause 5.8, Japan ........................................................................................ 105

E.8 Subclause 5.9, Japan ........................................................................................ 105

E.9 Subclause 5.10.1, Japan ................................................................................... 105

E.10 Subclause 5.11.6, Japan ................................................................................... 106

E.11 Subclause 6.3.3, Japan ..................................................................................... 107

E.12 Clause 7, Japan ................................................................................................ 107

Bibliography ..................................................................................................................... 108

Figure 1 – Example of a master antenna television system (MATV) for terrestrial

reception ............................................................................................................................ 11

Figure 2 – Example of the headend of a master antenna television system for satellite

(SMATV) reception ............................................................................................................. 12

Figure 3 – Example of a master antenna television system for terrestrial and satellite

(SMATV) reception ............................................................................................................. 12

Figure 4 – Example of a cabled distribution system for television and sound signals ............. 13

Figure 5 – System model for downstream direction of a cable network for television

and sound signals (CATV) .................................................................................................. 14

Figure 6 – PSK modulation (QPSK, BPSK or TC8PSK) ........................................................ 34

Figure 7 – DVB-S2 modulation (QPSK, 8PSK, 16APSK, 32APSK) ........................................ 34

Figure 8 – DVB-C QAM modulation ..................................................................................... 34

Figure 9 – DVB-C2 QAM modulation ................................................................................... 35

---------------------- Page: 7 ----------------------
– 6 – IEC 60728-101:2016 © IEC 2016

Figure 10 – DVB-T OFDM modulation ................................................................................. 35

Figure 11 – DVB-T2 OFDM modulation ................................................................................ 35

Figure 12 – Reference receiver for PSK demodulation (QPSK, BPSK or TC8PSK) ............... 36

Figure 13 – Reference receiver for DVB-S2 demodulation (QPSK, 8PSK, 16APSK,

32APSK) ............................................................................................................................ 36

...

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