IEC 60728-101-2016 Cable networks for television signals sound signals and interactive services - Part 101 System performance of forward paths loaded with digit.pdf

1、 IEC 60728-101 Edition 1.0 2016-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Cable networks for television signals,sound signals and interactive services Part 101: System performance of forward paths loaded with digital channels only Rseaux de distribution par cbles pour signaux de tlvision, signa

2、ux de radiodiffusion sonore et services intractifs Partie 101: Performances des systmes de voie directe soumis une charge de porteuses exclusivement numriques IEC 60728-101:2016-04(en-fr) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC, Geneva, Switzerland All rights reserve

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20、1 Edition 1.0 2016-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Cable networks for television signals,sound signals and interactive services Part 101: System performance of forward paths loaded with digital channels only Rseaux de distribution par cbles pour signaux de tlvision, signaux de radiodi

21、ffusion sonore et services intractifs Partie 101: Performances des systmes de voie directe soumis une charge de porteuses exclusivement numriques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 33.040.20; 33.160.01 ISBN 978-2-8322-3288-0 Registered trademark

22、of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 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 agr. colour

23、 inside 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 Basi

24、c 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.

25、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

26、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 WN ) .

27、 47 4.7.3 Intermodulation noise signal margin (SM IN ) 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 IEC 60728-101:2016 IEC 2016 3

28、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

29、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

30、 . 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 requireme

31、nts 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

32、 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 ou

33、tlet . 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 4 IEC 60728-101:2016 IEC 2016 5.10.2 Intermodu

34、lation 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 WN ) . 71 5.11.4 Intermodulation noise signal margin (SM IN ) 72 5.11.5 MER . 72 5.11.6 Phase noise of a DVB signal 72 5.12 DAB performance 73 6 Per

35、formance 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 Gener

36、al . 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

37、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 R

38、F 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 is

39、olation 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

40、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 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 tr

41、ansmission . 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

42、 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

43、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 Subcla

44、use 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 Examp

45、le 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 Sys

46、tem 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 6 IEC 60728-101:2016 IE

47、C 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 Figure 14 Reference receiver for DVB-C QAM demodulation .

48、 36 Figure 15 Reference receiver for DVB-C2 demodulation . 36 Figure 16 Reference receiver for DVB-T OFDM demodulation . 37 Figure 17 Reference receiver (buffer model) for DVB-T2 OFDM demodulation . 37 Figure 18 Test set-up for BER measurement . 41 Figure 19 Test set-up for BER measurement versus S/

49、N . 43 Figure 20 Example of BER measurement versus S/N . 45 Figure 21 Example of S/IN and BER versus signal level S for a cable network without optical link 46 Figure 22 Optical and coaxial subsystems of an HFC network . 46 Figure 23 Test set-up for SM WNand SM INmeasurement 48 Figure 24 Test set-up for modulation error ratio (MER) measurement and phase jitter measurement 51 Figure 25 Example of const