1、 IEC 60728-3-1 Edition 1.0 2012-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Cable networks for television signals, sound signals and interactive services Part 3-1: Active wideband equipment for cable networks Methods of measurement of non-linearity for full digital channel load with DVB-C signals
2、 Rseaux de distribution par cbles pour signaux de tlvision, signaux de radiodiffusion sonore et services interactifs Partie 3-1: Matriel actif large bande pour rseaux de distribution par cbles Mthodes de mesure de la non-linarit pour une charge tout numrique de signaux DVB-C IEC 60728-3-1:2012 THIS
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17、E INTERNATIONALE Cable networks for television signals, sound signals and interactive services Part 3-1: Active wideband equipment for cable networks Methods of measurement of non-linearity for full digital channel load with DVB-C signals Rseaux de distribution par cbles pour signaux de tlvision, si
18、gnaux de radiodiffusion sonore et services interactifs Partie 3-1: Matriel actif large bande pour rseaux de distribution par cbles Mthodes de mesure de la non-linarit pour une charge tout numrique de signaux DVB-C INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE Q
19、 ICS 33.060; 33.170 PRICE CODE CODE PRIX ISBN 978-2-83220-211-1 Registered trademark 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! Veuille
20、z vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60728-3-1 IEC:2012 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms, definitions, symbols and abbreviations 6 Terms and definitions 6 3.1Symbols 7 3.2Abbreviations 7 3.3 4 Methods of
21、 measurement of non-linearity for full digital channel load . 8 Maximum operating output level using the measurement of bit error ratio 4.1 (BER) 8 General . 8 4.1.1Equipment required . 8 4.1.2Connection of equipment . 9 4.1.3Measurement procedure 9 4.1.4Presentation of the results . 10 4.1.5Measure
22、ment of the carrier-to-interference noise ratio CINR . 10 4.2General . 10 4.2.1Equipment required . 10 4.2.2Connection of the equipment . 11 4.2.3Measurement procedure 11 4.2.4Presentation of the results . 12 4.2.5 5 Equipment characteristics required to be published 12 Annex A (informative) Example
23、s of measurement channels . 13 Annex B (normative) Null packet and PRBS definitions 14 Bibliography 16 Figure 1 BER measurement test configuration . 9 Figure 2 CINR measurement test setup 11 Figure 3 Plot of CINR curve versus EUT channel output signal level in dB( V) . 12 Table B.1 Null transport st
24、ream packet definition . 15 60728-3-1 IEC:2012 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES Part 3-1: Active wideband equipment for cable networks Methods of measurement of non-linearity for full digital channel load with
25、 DVB-C signals 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 international co-operation on all questions concerning standar
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34、ut of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn
35、 to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60728-3-1 has been prepared by technical area 5: Cable networks for television signal
36、s, sound signals and interactive services, of IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: FDIS Report on voting 100/1969/FDIS 100/2006/RVD Full information on the voting for the approval of this standa
37、rd 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. 4 60728-3-1 IEC:2012 The list of all parts of the IEC 60728 series, under the general title, Cable networks for television signals, sound signals
38、 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 related to the specific publication. At this date, the pu
39、blication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60728-3-1 IEC:2012 5 INTRODUCTION Standards of the IEC 60728 series deal with cable networks including equipment and associated methods of measurement for headend reception, processing and distribution of television
40、 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 media. This includes CATV 1 -networks, MATV-networks and SMATV-networks, individual receiving networks, and all k
41、inds of equipment, systems and installations installed in such networks. For active equipment with balanced RF signal ports this standard applies only 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 f
42、rom the antennas and/or special signal source inputs 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 terminals, etc.) as well as of any coaxial, balanced and optical cables and
43、accessories thereof is excluded. _ 1This word encompasses the HFC networks used nowadays to provide telecommunications services, voice, data, audio and video both broadcast and narrowcast. 6 60728-3-1 IEC:2012 CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES Part 3-1: Ac
44、tive wideband equipment for cable networks Methods of measurement of non-linearity for full digital channel load with DVB-C signals 1 Scope This part of IEC 60728 is applicable to the methods of non-linearity measurement for cable networks which carry only digitally modulated television signals, sou
45、nd signals and signals for interactive services. These methods take into account the specific signal form and behaviour of digitally modulated signals which differ from the analogue broadcast signals represented mainly by the existence of discrete carrier signals. 2 Normative references The followin
46、g documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60728-3, Cable
47、networks for television signals, sound signals and interactive services Part 3: Active wideband equipment for cable networks ISO/IEC 13818-1:2007, Information technology Generic coding of moving pictures and associated audio information: Systems 3 Terms, definitions, symbols and abbreviations For th
48、e purposes of this document, the following terms, definitions, symbols and abbreviations apply. Terms and definitions 3.1 Subclause 3.1 of IEC 60728-3 is applicable except as follows. Addition: 3.1.25 maximum operating output level average channel power level of a digitally modulated signal in the 2
49、56 QAM format with a symbol rate of 6,9 MSymb/s with 15 % cosine roll-off, measured with full digital channel load Note 1 to entry: This maximum operating output level has no direct correlation to that derived from CTB/CSO measurements of analogue or mixed analogue-digital channel loads. 60728-3-1 IEC:2012 7 Symbols 3.2 The following graphical symbols are used in the figures of this sta
