1、 IEC 62087-5 Edition 1.0 2015-06 INTERNATIONAL STANDARD Audio, video and related equipment Determination of power consumption Part 5: Set top boxes (STB) IEC 62087-5:2015-06(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless
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11、 Set top boxes (STB) INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160.10 ISBN 978-2-8322-2685-8 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 IEC 62087-5:2015 IEC 2015 C
12、ONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms, definitions and abbreviations . 6 3.1 Terms and definitions 6 3.2 Abbreviations 8 4 Specification of operating modes and functions . 8 4.1 General . 8 4.2 Auto power down function . 8 5 Measuring conditions for set top
13、 boxes (STBs) 9 5.1 Overview of a set top box 9 5.2 Input signal . 10 5.2.1 General . 10 5.2.2 RF test signal 10 5.2.3 Broadband input signal 10 5.3 Input terminals 11 5.3.1 Analogue terrestrial input terminal . 11 5.3.2 Cable television input terminal . 11 5.3.3 Digital terrestrial input terminal 1
14、1 5.3.4 Satellite input terminal . 11 5.4 Measurement procedure . 11 5.4.1 General measuring conditions . 11 5.4.2 Stabilization . 11 5.4.3 Environmental conditions . 11 5.4.4 Setup . 11 5.4.5 Power measurements 12 Annex A (informative) General information on STB technology 15 A.1 General . 15 A.2 B
15、ackground on STB technology 15 A.3 Testing recording and time shift functions . 16 Bibliography 18 Figure 1 Auto power down function 14 Figure A.1 Block diagram of the common functional parts of an STB 15 Figure A.2 Time shift recording with single tuner 16 Figure A.3 Single tuner multifunction reco
16、rd and playback . 16 Table 1 Operating modes and functions . 9 Table 2 Matrix for multituner STBs . 13 IEC 62087-5:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AUDIO, VIDEO AND RELATED EQUIPMENT DETERMINATION OF POWER CONSUMPTION Part 5: Set top boxes (STB) FOREWORD 1) The Internation
17、al 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 standardization in the electrical and electronic
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26、 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 to the possibility that some of the eleme
27、nts 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 62087-5 has been prepared by technical area 12: AV energy efficiency and smart grid applications, of IEC technical committee 10
28、0: Audio, video and multimedia systems and equipment. This first edition of IEC 62087-5 cancels and replaces Clause 8 of IEC 62087:2011. This standard together with IEC 62087-1 to IEC 62087-4 and IEC 62087-6 cancels and replaces IEC 62087:2011. This International Standard constitutes a technical rev
29、ision. This edition does not include any significant technical changes with respect to Clause 8 of IEC 62087:2011. It was developed as a member of the new multipart series of IEC 62087 standards. 4 IEC 62087-5:2015 IEC 2015 The text of this standard is based on the following documents: FDIS Report o
30、n voting 100/2470/FDIS 100/2500/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. A list of all parts in the IEC 62087 series, published under the general title Audio, video, and related equipment Determination of
31、power consumption, can be found on the IEC website. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.i
32、ec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IEC 62087-5:2015 IEC 2015 5 INTRODUCTION This part of IEC 62087 spec
33、ifies methods for measurement of the power consumption of set top boxes for consumer use. IEC 62087:2011 1(third edition) revises methods for measuring power consumption of set top boxes in the On mode and Partial On modes. These modes correspond to the active modes which are defined in IEC 62542:20
34、13. This standard has been divided into multiple parts. At the time of publication of this part, the following parts are planned or published: Part 1: General Part 2: Signals and media Part 3: Television sets Part 4: Video recording equipment Part 5: Set top boxes (STB) Part 6: Audio equipment 1IEC
35、62087:2011, Methods of measurement for the power consumption of audio, video and related equipment 6 IEC 62087-5:2015 IEC 2015 AUDIO, VIDEO AND RELATED EQUIPMENT DETERMINATION OF POWER CONSUMPTION Part 5: Set top boxes (STB) 1 Scope This part of IEC 62087 specifies methods of measurement for the pow
36、er consumption of set top boxes (STBs). It specifies the different modes of operation which are relevant for measuring power consumption. The methods of measurement are applicable only for equipment which can be connected to the mains. The measuring conditions in this standard represent the normal u
37、se of the equipment and may differ from specific conditions, as specified, for example, in safety standards. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edit
38、ion cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60107-1:1997, Methods of measurement on receivers for television broadcast trans- missions Part 1: General conditions Measurements at radio and video frequencies IEC 62087
39、1:2015, Audio, video, and related equipment Methods of measurement for power consumption Part 1: General IEC 62216:2009, Digital terrestrial television receivers for the DVB-T system 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purposes of this document, the following te
40、rms and definitions apply. 3.1.1 additional functions functions that are not required for the basic operation of the equipment 3.1.2 buffering temporary storage of video and audio streams in some form of memory in order to perform time shifting functions 3.1.3 cable TV STB STB whose principal functi
41、on is to receive and decode television signals from a broadband, hybrid fiber/coaxial, community cable distribution system and deliver them to a display and/or recording device IEC 62087-5:2015 IEC 2015 7 3.1.4 conditional access module plug-in module that enables conditional access 3.1.5 data over
42、the cable service interface specification DOCSIS international suite of standards that define interface requirements for cable modems involved in high-speed data and video/audio content distribution over cable television systems 3.1.6 internet protocol TV STB STB whose principal function is to recei
43、ve and decode television/video signals encapsulated in IP packets and to deliver them to a display and/or recording device 3.1.7 multi-room STB STB that is capable of providing 2 or more independent video and audio streams either direct to display devices or to thin clients/remote 3.1.8 satellite TV
44、 STB STB whose principal function is to receive and decode television signals from satellites and deliver them to a display and/or recording device 3.1.9 set top box STB equipment for the reception of television and related services (e.g. radio) from terrestrial, cable, satellite, or broadband netwo
45、rks which are decoded and delivered to a display and/or recording device 3.1.10 special functions functions that are related to, but not required for, the basic operation of the device 3.1.11 television set TV equipment for the reception and display of television broadcast and similar services for t
46、errestrial, cable, satellite and broadband network transmission of analogue and/or digital signals Note 1 to entry: A television set may include additional functions that are not required for its basic operation. 3.1.12 terrestrial TV STB STB whose principal function is to receive and decode televis
47、ion signals over the air (OTA) and deliver them to a display and/or recording device 3.1.13 thin-client STB remote STB STB that is designed to interface between a multi-room capable STB and a TV (or other output device) that has no ability to interface with the service provider directly and relies s
48、olely on a multi-room box STB for content Note 1 to entry: Any STB that meets the definition of cable TV, satellite TV, Internet protocol TV or terrestrial TV STB is not a thin-client/remote STB. 8 IEC 62087-5:2015 IEC 2015 3.1.14 time shifting capability of a device to allow playback type functions
49、 with real time broadcast Note 1 to entry: Such functions may include fast forward, review (rewind), pause and slow motion. 3.1.15 video recording equipment equipment for the recording and reproduction of video and audio signals on a recording medium EXAMPLES Video cassette recorder (VCR) and digital versatile disc (DVD) player or recorder. Note 1 to entry: Equipment with only playback function is included as well. 3.2 Abbreviations Prime AC Alternating Curr
