IEC 62087 5 Edition 1 0 201 5 06 INTERNATIONAL STANDARD Audio, video and related equipment – Determination of power consumption – Part 5 Set top boxes (STB) IE C 6 2 0 8 7 5 2 0 1 5 0 6 (e n ) ® colou[.]
I E C 62 -5 ® Edition 201 5-06 I N TE RN ATI ON AL S TAN D ARD colour in sid e Au d i o, vi d eo an d rel ated eq u i pm en t – D eterm i n ati on of power s u m pti on – IEC 62087-5:201 5-06(en) Part 5: S et top boxes (S TB ) TH I S P U B L I C ATI O N I S C O P YRI G H T P RO TE C T E D C o p yri g h t © I E C , G e n e va , S w i tze rl a n d 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 IEC Central Office 3, rue de Varembé CH-1 21 Geneva 20 Switzerland Tel.: +41 22 91 02 1 Fax: +41 22 91 03 00 info@iec.ch www.iec.ch Abou t th e I E C The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies Ab o u t I E C p u b l i c a ti o n s The technical content of IEC publications is kept under constant review by the IEC Please make sure that you have the latest edition, a corrigenda or an amendment might have been published I E C C atal og u e - webs tore i ec ch /catal og u e E l ectroped i a - www el ectroped i a org The stand-alone application for consulting the entire bibliographical information on IEC International Standards, Technical Specifications, Technical Reports and other documents Available for PC, Mac OS, Android Tablets and iPad The world's leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French, with equivalent terms in additional languages Also known as the International Electrotechnical Vocabulary (IEV) online I E C pu bl i cati on s s earch - www i ec ch /s earch pu b I E C G l os s ary - s td i ec ch /g l os s ary The advanced search enables to find IEC publications by a variety of criteria (reference number, text, technical committee,…) It also gives information on projects, replaced and withdrawn publications More than 60 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002 Some entries have been collected from earlier publications of IEC TC 37, 77, 86 and CISPR I E C J u st P u bl i s h ed - webs tore i ec ch /j u s u bl i s h ed Stay up to date on all new IEC publications Just Published details all new publications released Available online and also once a month by email I E C C u s to m er S ervi ce C en tre - webs tore i ec ch /cs c If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csc@iec.ch I E C 62 -5 ® Edition 201 5-06 I N TE RN ATI ON AL S TAN D ARD colour in sid e Au d i o, vi d eo an d rel ated eq u i pm en t – D eterm i n ati on of power s u m pti on – Part 5: S et top boxes (S TB ) INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.1 60.1 ISBN 978-2-8322-2685-8 Warn i n g ! M ake s u re th at you obtai n ed th i s pu bl i cati on from an au th ori zed d i s tri bu tor ® Registered trademark of the International Electrotechnical Commission –2– I EC 62087-5: 201 © I EC 201 CONTENTS FOREWORD I NTRODUCTI ON Scope Norm ative references Terms, definitions and abbreviations Terms and definitions Abbreviations Specification of operating modes and functions General Auto power down function Measuring conditions for set top boxes (STBs) Overview of a set top box I nput signal General 2 RF test signal Broadband input signal I nput term inals 1 Analogue terrestrial input terminal 1 Cable television input terminal 1 3 Digital terrestrial input terminal 1 Satellite input term inal 1 Measurem ent procedure 1 General measuring conditions 1 Stabilization 1 Environmental conditions 1 4 Setup 1 5 Power m easurements Annex A (informative) General information on STB technolog y A General A Background on STB technolog y A Testing recording and tim e shift functions Bibliograph y Figure Figure Figure Figure – Auto power down function A – Block diagram of the comm on functional parts of an STB A – Time shift recording with single tuner A – Single tuner multifunction record and playback Table – Operating m odes and functions Table – Matrix for multituner STBs I EC 62087-5: 201 © I EC 201 –3– INTERNATI ONAL ELECTROTECHNI CAL COMMISSI ON AU D I O , VI D E O AN D RE L AT E D E Q U I P M E N T – D E T E RM I N AT I O N O F P O WE R C O N S U M P T I O N – P a rt : S e t to p b o xe s (S T B ) FOREWORD ) The I nternati on al Electrotechni cal Comm ission (I EC) is a worl d wid e organization for stan dardization com prising all n ation al el ectrotechnical comm ittees (I EC National Comm ittees) The object of I EC is to prom ote internati onal co-operation on all questions concerni ng standardi zati on in the el ectrical an d electronic fields To this end and in additi on to other acti vities, I EC publish es I nternational Stan dards, Techn ical Specifications, Technical Reports, Publicl y Avail abl e Specificati ons (PAS) an d Gu ides (h ereafter referred to as “I EC Publication(s)”) Thei r preparation is entrusted to technical comm ittees; any I EC National Comm ittee interested in the subj ect dealt with m ay partici pate in this preparatory work I nternational, governm ental an d n on governm ental organ izations l iaising with th e I EC also participate i n this preparation I EC collaborates closel y with the I ntern ational Organi zation for Stand ardization (I SO) in accordance with ditions determ ined by agreem ent between th e two organi zati ons 2) The form al decisions or ag reem ents of I EC on tech nical m atters express, as n early as possible, an i nternati onal consensus of opi nion on the rel evant subjects since each technical com m ittee has representati on from all interested I EC N ational Com m ittees 3) I EC Publications have the form of recomm endations for intern ational use an d are accepted by I EC National Com m ittees in that sense While all reasonable efforts are m ade to ensure that the tech nical content of I EC Publications is accu rate, I EC cann ot be h eld responsi ble for th e way in which th ey are used or for an y m isinterpretation by an y en d u ser 4) I n order to prom ote intern ational u niform ity, I EC National Com m ittees und ertake to apply I EC Publications transparentl y to the m axim um extent possible i n their national an d regi on al publicati ons Any d ivergence between an y I EC Publication and the correspondi ng national or regi on al publicati on sh all be clearl y in dicated in the latter 5) I EC itself d oes n ot provi de an y attestation of conform ity I n depend ent certificati on bodies provi de conform ity assessm ent services and, in som e areas, access to I EC m arks of conform ity I EC is not responsi ble for any services carri ed out by ind ependent certification bodi es 6) All users shou ld ensure that th ey have the l atest editi on of thi s publicati on 7) No liability shall attach to I EC or its directors, em ployees, servants or ag ents inclu din g in divi dual experts an d m em bers of its technical com m ittees and I EC Nati on al Com m ittees for any person al i njury, property d am age or other dam age of any n ature whatsoever, wheth er di rect or indirect, or for costs (includ i ng leg al fees) and expenses arisi ng out of the publ ication, use of, or relian ce upon, this I EC Publicati on or any other I EC Publications 8) Attention is drawn to th e N orm ative references cited in th is publ ication Use of the referenced publ ications is indispensable for the correct applicati on of this publication 9) Attention is drawn to the possibility that som e of the elem ents of this I EC Publication m ay be the su bject of patent rig hts I EC shall not be held responsibl e for identifyi ng any or all such patent ri ghts I nternational Standard I EC 62087-5 has been prepared by technical area 2: AV energy efficiency and sm art grid applications, of I EC technical committee 00: Audio, video and multimedia system s and equipment This first edition of I EC 62087-5 cancels and replaces Clause of I EC 62087: 201 This standard together with I EC 62087-1 to I EC 62087-4 and I EC 62087-6 cancels and replaces IEC 62087: 201 This I nternational Standard constitutes a technical revision This edition does not include an y significant technical changes with respect to Clause of IEC 62087: 201 I t was developed as a m em ber of the new m ultipart series of I EC 62087 standards –4– I EC 62087-5: 201 © I EC 201 The text of this standard is based on the following docum ents: FDI S Report on votin g 00/2470/FDI S 00/2500/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 I EC 62087 series, published under the general title Audio, video, and related equipment – Determination of power consumption , can be found on the I EC website This publication has been drafted in accordance with the I SO/I EC Directives, Part The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the I EC website under "http: //webstore.iec.ch" in the data related to the specific publication At this date, the publication will be • • • • reconfirmed, withdrawn, replaced by a revised edition, or am ended A bilingual version of this publication m ay be issued at a later date I EC 62087-5: 201 © I EC 201 –5– INTRODUCTION This part of I EC 62087 specifies methods for measurement of the power consumption of set top boxes for consum er use I EC 62087: 201 1 (third edition) revises m ethods for measuring power consumption of set top boxes in the On mode and Partial On m odes These m odes correspond to the active m odes which are defined in I EC 62542: 201 This standard has been divided into multiple parts At the time of publication of this part, the following parts are planned or published: – – – – – – Part : Part 2: Part 3: Part 4: Part 5: Part 6: General Signals and m edia Television sets Video recording equipment Set top boxes (STB) Audio equipment ————————— I EC 62087: 201 , Methods of measurement for the power consumption of audio, video and related equipment –6– I EC 62087-5: 201 © I EC 201 AU D I O , VI D E O AN D RE L AT E D E Q U I P M E N T – D E T E RM I N AT I O N O F P O WE R C O N S U M P T I O N – P a rt : S e t to p b o xe s (S T B ) S cop e This part of I EC 62087 specifies methods of m easurement for the power consum ption of set top boxes (STBs) I t specifies the different modes of operation which are relevant for measuring power consum ption The methods of m easurement are applicable only for equipm ent which can be connected to the mains The m easuring conditions in this standard represent the normal use of the equipment and may differ from specific conditions, as specified, for example, in safety standards N o rm a t i ve re fe re n c e s The following docum ents, in whole or in part, are normativel y referenced in this docum ent and are indispensable for its application For dated references, onl y the edition cited applies For undated references, the latest edition of the referenced docum ent (including an y amendments) applies I EC 601 07-1 : 997, Methods of measurement on receivers for television broadcast transmissions – Part 1: General conditions – Measurements at radio and video frequencies I EC 62087-1 : 201 5, Audio, video, and related equipment – Methods of measurement for power consumption – Part 1: General I EC 6221 6: 2009, Digital terrestrial television receivers for the DVB-T system T e rm s , d e fi n i t i o n s a n d a b b re vi a t i o n s T e rm s a n d d e fi n i t i o n s For the purposes of this docum ent, the following term s and definitions apply a d d i t i o n a l fu n c t i o n s functions that are not required for the basic operation of the equipment b u ffe ri n g temporary storage of video and audio stream s in some form of m em ory in order to perform tim e shifting functions ca b l e TV S TB STB whose principal function is to receive and decode television signals from a broadband, h ybrid fiber/coaxial, com munity cable distribution system and deliver them to a display and/or recording device I EC 62087-5: 201 © I EC 201 –7– co n d i ti o n al acces s m od u l e plug-in module that enables conditional access d a t a o v e r t h e c a b l e s e rv i c e i n t e rfa c e s p e c i fi c a t i o n DOCSI S international suite of standards that define interface requirem ents for cable m odem s involved in high-speed data and video/audio content distribution over cable television system s i n t e rn e t p ro t o c o l T V S T B STB whose principal function is to receive and decode television/video signals encapsulated in I P packets and to deliver them to a display and/or recording device m u l t i - ro o m STB STB that is capable of providing or m ore independent video and audio stream s either direct to display devices or to thin clients/rem ote s ate l l i te T V S T B STB whose principal function is to receive and decode television signals from satellites and deliver them to a display and/or recording device s e t to p b o x STB equipm ent for the reception of television and related services (e g radio) from terrestrial, cable, satellite, or broadband networks which are decoded and delivered to a display and/or recording device speci al fu n c t i o n s functions that are related to, but not required for, the basic operation of the device 1 te l e v i s i o n s et TV equipm ent for the reception and display of television broadcast and similar services for terrestrial, cable, satellite and broadband network transm ission of analogue and/or digital signals Note to entry: A tel evisi on set m ay includ e ad ditional fu nctions that are n ot requi red for its basic operati on t e rre s t ri a l TV STB STB whose principal function is to receive and decode television signals over the air (OTA) and deliver them to a display and/or recording device th i n -cl i e n t S T B re m o t e S T B STB that is designed to interface between a m ulti-room capable STB and a TV (or other output device) that has no ability to interface with the service provider directl y and relies solel y on a multi-room box STB for content Note to entry: An y STB that m eets the definiti on of cabl e TV, satellite TV, I ntern et protocol TV or terrestri al TV STB is not a thin-cli ent/rem ote STB –8– I EC 62087-5: 201 © I EC 201 ti m e sh i fti n g capability of a device to allow playback type functions with real tim e broadcast Note to entry: Such functions m ay include fast forward, review (rewind ), pause and slow m otion vi d eo record i n g eq u i pm en t equipm ent for the recording and reproduction of video and audio signals on a recording medium EXAMPLES Vid eo cassette record er (VCR) and d igital versatile disc (DVD) pl ayer or recorder Note to entry: Eq uipm ent wi th onl y pl ayback function is i ncluded as well Abbrevi ati on s ′ AC BD DC DVD IP HD HDD LN B M PEG OTA RF SD STB UUT VCR 4 Prim e Alternating Current Blu-ray Disc TM Direct Current Digital Versatile Disc I nternet Protocol High Definition (720 p or better) Hard Disk Drive Low N oise Block converter Moving Picture Experts Group Signals Over the Air Radio Frequency Standard Definition Set Top Box Unit Under Test Video Cassette Recorder Speci fi cati on of operati ng modes and fu ncti ons G en eral Table contains the operating modes and functions for set top boxes Au to power d own fu n cti on An auto power down feature m ay be im plem ented on a STB to power down into a Partial On mode after a predetermined tim e Such a feature should be referred to as auto power down ————————— Blu-ray Disc™ is a trad e m ark of the Blu-ray Disc Association This inform ation is gi ven for the venience of users of this docum ent and d oes not constitute an endorsem ent by I EC of the product n am ed I EC 62087-5: 201 © I EC 201 –9– T a b l e – O p e ti n g m o d e s a n d fu n cti o n s P o we r M od e S u b -m o d e F u n cti o n ( s ) D e s c ri p ti o n 0W Disconn ected Disconn ected Disconnect The equi pm ent is disconnected from all extern al power sou rces ≥0 W Off Off Off The equi pm ent is connected to an external power sou rce and provid es no functions that d epend on a power source Th e eq uipm ent cannot be switched into an y other m ode with the rem ote control u nit, or an external or i nternal sig nal Note th at som e power m ay be consum ed if an EM C filter or other com ponents exist on the source side of the power switch >0 W Partial On Standby-passive – Wake on – rem ote control – internal signal Standby-active, low – Wake on – rem ote control – internal sig nal – extern al sign al Standby-active, high – Wake on – rem ote control – internal sig nal – extern al sign al – Data comm unications On The equi pm ent is connected to an extern al power sou rce and d oes not provi de its prim ary functi ons The equi pm ent can be switched i nto another m ode with th e rem ote control unit, an intern al sign al, or an external signal The equi pm ent is connected to an external power sou rce and d oes not provi de its prim ary functi ons The equi pm ent can be switched i nto another m ode with th e rem ote control unit, an intern al sign al, or an external signal Additional l y, the equi pm ent is exchangi ng/ recei vin g data with/from an extern al sou rce On-play Playi ng a program m e from an HDD, sol id state m em ory, or other m edia On-broadcast Pictures an d soun d from The equi pm ent is perform ing th e a broadcast function of provi din g a viewer with vid eo and audi o from a broadcast On-record Recordin g a programm e The equi pm ent is connected to a from a broadcast power source and records a si gnal from an external or internal source On-m ultifunction Recordin g Playi ng back The equi pm ent is connected to an external power sou rce and d oes not provi de its prim ary functi ons The equi pm ent can be switched i nto another m ode with th e rem ote control unit or an intern al signal, but not with an external sig nal The equi pm ent is connected to a power source and plays the tape The optical disc insid e the equi pm ent The equi pm ent is perform ing m ultifunction “On-play” and/or “On record ” sim ultaneously M e as u ri n g co n d i ti o n s fo r s e t to p b o xe s ( S TB s ) O ve rvi e w o f a s e t to p b o x STBs are devices that perform the task of providing audio, video and related services from various broadcast, narrowcast and broadband platforms They can exist as stand alone devices or as an integral part of a network Although originally they were analogue in nature more recentl y, STBs are typicall y associated with digital television services – 10 – I EC 62087-5: 201 © I EC 201 Recent STBs have included various enhanced functionality such as recording The m easuring method described in this clause onl y covers STBs that have either H DDs or solid state memory for recording I n the case of solid state m emory this method covers the STB whether or not the mem ory is removable STBs with removable media, apart from solid state mem ory, are not covered by this m ethod In pu t si g n al G e n e l In general terms, input signals shall be of the strength and quality for the type of broadcast system on which the STB is intended to be used Where an STB supports m ultiple broadcast system s, it shall be tested for each broadcast system in which it operates Each m easured result shall be described in the report I n som e circumstances, the d ynam ic broadcast-content video may be suitable for use as the video and audio test signal content but will need to be multiplexed and m odulated as stated in 5.2 below RF t e s t s i g n a l G e n e l For digital terrestrial, satellite and cable TV STBs, the test signal shall be com prised of a multiplexed transport stream modulated with param eters that reflect the typical environment in which the STB will be used The video and audio components of the transport stream shall be as described in 2.2.2 and 2 For analogue terrestrial TV, satellite TV and cable TV STBs, the signal should be typical of the type of signal the STB is designed to receive Vi d e o t e s t s i g n a l The STB shall be tested using an appropriate input signal This input signal should be at the highest resolution that the STB is capable of decoding using the m ost processing intensive advanced decoding standard of the intended broadcast system(s) that the STB will be used on A description of the signal used for the test shall be included in the test report This description shall include at a m inim um, resolution, frame rate and bit rate If the STB under test is an H D decoder, additional testing m ay also be conducted with an SD input signal Where the STB is operating in a download or recording mode, the input should contain content that simulates material that would typically be downloaded or recorded Where an STB has a conditional access system , it should be tested whilst decoding encrypted content Where an STB can record other services than the one being watched, the test signal should contain sufficient services to enable this feature to be tested Au d i o t e s t s i g n a l The STB shall be tested using an appropriate input signal The audio test signal should have the m axim um data rate (bit/s) The audio form at used during the power m easurem ent shall be described in the report B ro a d b a n d i n pu t si g n al An input signal that provides the equivalent m ultiplexed transport stream as an appropriate internet protocol (I P) broadband signal conform ing to the defined video and audio test signalling (5.2.2 and 2 3) I EC 62087-5: 201 © I EC 201 5 – 11 – I n p u t t e rm i n a l s An a l o g u e t e rre s t ri a l i n p u t t e rm i n a l In the case that the STB is being tested with an analogue terrestrial RF input signal, the signals used shall conform to I EC 601 07-1 : 997, 3, and shall have the input signal level set at –39 dB(mW) when term inated with a 75 Ω resistor or at a level to provide a perceptually noise free and error free picture NOTE –39 dB(mW) corresponds to 70 dB(µ V) C ab l e tel evi s i o n i n p u t t e rm i n a l I n the case that the STB is being tested with a cable television RF input signal, the signals used shall conform to the cable television specifications for the region, and shall have the input signal level set at –49 dB(mW) with a termination of 75 Ω resistor or at a level to provide better than the picture fai lure point (PF) as defined in I EC 6221 6: 2009 for digital signals or a perceptuall y noise free and error free picture or error free for analogue signals NOTE –49 dB(mW) corresponds to 60 dB(µ V) 3 D i g i tal t e rre s t ri a l i n p u t t e rm i n a l I n the case that the STB is being tested with a digital terrestrial RF input signal, the signals used shall conform to the broadcast specifications for the region, and shall have the input signal level set at –49 dB(mW) with a termination of 75 Ω resistor or at a level to provide better than the picture failure point (PF) as defined in I EC 6221 6: 2009 or a perceptuall y noise free and error free picture S a t e l l i t e i n p u t t e rm i n a l In the case that the STB is being tested with a satellite input signal, the input signal level shall be set at –49 dB(mW) with a term ination of 75 Ω resistor or at a level to provide better than the picture failure point (PF) as defined in I EC 6221 6:2009 for digital signals or a perceptuall y noise free picture or error free for analogue signals 5 M e a s u re m e n t p ro c e d u re G e n e l m e a s u ri n g co n d i ti o n s The general measuring conditions including the type of power m eters to be used is as per IEC 62087-1 : 201 except where conditions are otherwise specified in this subclause Stabi l i zati on The m easurem ents shall be performed after the STB has achieved a stable condition with respect to power consum ption Refer also to I EC 62087-1 : 201 NOTE There are several ways to consider a STB stabl e For exam ple, a STB can be considered stable between m in an d 30 m in after enteri ng i nto each operation m ode I n this case, the tim e used to stabil i ze the STB shall be recorded i n the test report A STB can be also consid ered stable when an y of th e results of the sam e test repeated are withi n % E n v i ro n m e n t a l c o n d i ti o n s The ambient tem perature shall be 23 °C 4 ± °C Refer also to I EC 62087-1 : 201 S e tu p The STB shall be set up in a m anner to sim ulate a normal operating environment I n this condition, the measurem ent shall be made without optional peripheral devices attached to the – 12 – I EC 62087-5: 201 © I EC 201 device The input signals to the STBs m ay be either live signals or generated test stream s that simulate live signals that the STB is designed to receive and decode Where a STB can power an LN B of an antenna am plifier this power shall not be included in the measurem ent Where possible, this power suppl y should be disabled Where it cannot be disabled isolation connectors should be used to isolate the power suppl y I f required the LN B or antenna amplifier should be powered from an external power source to the STB I f possible, an y function which m ay work in background of an y On m ode function should be disabled (turned off) I f possible, an y function which m ay cause the interruption of an y On m ode function should also be disabled (turned off) I f they cannot be disabled the m easurement should be scheduled so as to avoid working such background functions during the m easurem ent NOTE Exam ples of backg rou nd and/or interrupt fu nctions for an y On m ode fu nction are: – backgroun d software download /install; – tim er recordin g; – autom atic deleti on of an ol d TV programm e wh ich was recorded 5 5 Power m easu rem en ts G en eral The STB under test shall be measured in each applicable m ode as specified below I n the case of H D STBs, testing shall be with an HD input signal Testing with an SD input signal may also be conducted Where the SD test is conducted on an HD STB, the result shall be recorded as PAV_ON_SD 5 On -broad cast Disable the time shifting function, if possible, and measure the average power consum ed for m in Record this as PAV_ON Record the tim e used to measure the average power 5 On -pl ay Start a playback of a previousl y recorded programm e on the STB and m easure the average power consum ed for a two minute period Record this as PPL 5 On -record Start or schedule a recording With the STB recording the program me, m easure the average power consum ed for a two minute period Record this as PREC_ON 5 On -m u l ti fu n cti on wi th a si n g l e tu n er Set the STB to record a programme while simultaneousl y playing back a previousl y recorded programme and m easure the average power consumed for Record this as PMF_ST Tim e shifting is covered in this measurem ent as this is the case when the STB is playing back the same programme as it is recording NOTE The m echan ism for multifunction with a singl e tu ner is the sam e as for tim e shift or recordi ng For this reason there is n o need to m easure tim e shifting and recordin g separately See Annex A I EC 62087-5: 201 © I EC 201 5 5.6 – 13 – On -mu ltifu n cti on with a mu l ti tu n er Table shows the matrix that shall be used to characterize a multituner STB Table – M atri x for mu l titu n er STBs a Ad d rd tu n er record i n g H D or SD a Ad d th tu n er record i n g H D or SD a Ad d n th tu n er record i n g H D or SD a Tu n er Vi ewi n g Ad d n d tu n er record i n g H D or SD Sequence PM FA_S D_ n SD PM FA_S D_2 PMFA_S D_3 PM FA_S D_4 PM FA_S D_ n Sequence PMFA_H D _ n HD PMFA_H D _2 PMFA_H D _3 PM FA_H D _4 PMFA_H D _ n I f fitted Measure the average power for m in for each of the modes in the matrix For SD STBs, only sequence shall be perform ed For H D STBs, both sequence and sequence shall be perform ed 5 Stan dby-active, h ig h I f possible, activate a download mode from the prim ary service and measure the average power consum ed for at least This measurem ent may require information from the manufacturer and/or service provider to ensure the transport stream contains a suitable download and instructions on how to set the STB to receive the download Record this value as PSAH and record the time used to measure the average power NOTE I t m ay not be possible to place the STB into this m ode I f this is the case and the val ue is still requi red it m ay have to be provided by manufacturer’s decl aration 5 Stan dby-active, l ow To ensure that the STB is in standby-active and not perform ing an y downloading or recording function, the following procedure should be used a) Put the STB into its on m ode b) I f the STB is capable of scheduling a recording then schedule a recording or more hours in the future c) After m in in this mode, press the standby or off button on the remote control d) Leave the STB for a minimum of 30 or until higher power mode maintenance activities within the U UT have been completed Measure the average power consumed for at least m in Record this as PSAL Record the tim e used to m easure the average power Record the tim e taken to switch to standby-active, low 5.9 Stan d by-passive To ensure that the STB is in standby-passive, the following procedure should be used a) Put the STB into its on mode b) I f the STB is capable of scheduling a recording then schedule a recording or m ore hours in the future c) After m in in this mode, press the standby or off button on the remote control d) Leave the STB for a m inim um of 30 or until higher power m ode m aintenance activities within the U UT activities have been com pleted – 14 – I EC 62087-5: 201 © I EC 201 Measure the average power consum ed for at least m in Record this as PSP Record the time used to m easure the average power Record the tim e taken to switch to standby-passive NOTE The m ethod for d eterm ining standby-active low an d standby-passive are identical as the switchi ng into either one of these m odes is the sam e Which m ode the STB actually switches to is determ ined by the platform in which the STB is operatin g A terrestri al TV STB will be m ore likely to be in a passive m ode and a cable or satellite TV STB will be m ore l ikel y to be i n a stand by-acti ve low m ode Both m ethods are specified h ere to be consistent with the defi nitions i n Tabl e 5 Off Turn the STB off using the power switch, if available, and measure the average power consum ed for at least m in Record this as P_OFF and record the time used to measure the average power 5 1 Au to power d own I f the UUT includes an auto power down feature, use the following procedure to determ ine the auto power down interval and the power consumption after auto power down is com pleted (See Figure ) Power consumpti on a) Place the UUT in the On m ode with the auto power down function enabled The auto power down interval is specified by the manufacturer The auto power down interval should be reported b) Stop an y m ain functions of the UUT and start a tim er to determine the au to power down interval c) Allow the U UT to autom aticall y power down d) Monitor the power consum ption of the U UT until the power consumption stabilizes e) Stop the tim er and report the auto power down interval f) Measure the average power consumed for Record this as PAPD Auto power down fu nction Auto power down i nterval (determ ined by th e m anufactu rer) On m ode power consum ption Possible m aintenance functions in progress Auto power down power consum ption Stop an y main functions Auto power down starts Auto power down com pleted Elapsed tim e IEC Fi g u re – Au to power d own fu n cti on I EC 62087-5: 201 © I EC 201 – 15 – An nex A (informative) General in formation on STB tech nol og y A General This annex covers a num ber of technolog y and testing issues that may be helpful as additional information to that which is contained in Clause Figure A shows a block diagram of the comm on functional parts of an STB HDD Tuner MPEG decoder A/V output CPU Modem Tuner n Ethern et/ Broadband interface Flash m em ory IEC Fi g u re A – Bl ock d i ag ram of th e com m on fu n cti on al parts of an STB A Backgrou nd on STB techn ol og y STB technology was originall y introduced to receive subscription based TV services and display the content on televisions The original services were analogue H owever, as digital broadcast technology has been introduced over the last several years STBs have becom e a rapidl y developing technology for both subscription and free to air terrestrial, cable and satellite TV services Most recentl y STBs have been developed for I nternet protocol TV services The range of types now available vary from simple adaptors for terrestrial free to air TV services to com plex m ultituner types with recording and time slip functions STBs are now emerging with rem ovable and non removable solid state mem ory – 16 – I EC 62087-5: 201 © I EC 201 Due to the rapid rise in STB use, concerns have been raised about the increased energ y consum ption by these devices and actions in the form of a num ber of programmes both voluntary and regulatory have been implem ented In I EC 62087: 201 STB m easurem ent methods were revised in response to both the changed nature of STBs and the need for internationall y accepted m ethods of measurem ent to facilitate the development of energ y efficiency programmes associated with STBs STBs covered by I EC 62087: 201 include STBs with recording capability using non rem ovable media such as HDDs or solid state m emory I t also includes recording capability on removable solid state mem ory DVD recorders and Blu-ray Disc TM (BD) recorders are excluded from the scope of this standard The m easuring m ethod covers both so called sim ple STBs and also com plex STBs The distinction between these types of STBs is whether conditional access is deployed in the STB The power measurem ent m ethods in this standard appl y to both types of STBs From the perspective of power m easurement, Figure A shows the relevant functional contributors to power consum ption for an STB A Testi ng recordi ng an d ti m e shi ft functi ons Figure A and Figure A.3 show the data flow for a single tuner time shift function and for multifunction record and playback Dem odul ator TV HDD/Flash storag e IEC Fi g u re A – Ti m e sh i ft record i n g wi th si n g l e tu n er Dem odul ator TV HDD/Fl ash storag e HDD/Flash storage IEC Fi g u re A – Si n g l e tu n er m u l ti fu n cti on record an d pl ayback I EC 62087-5: 201 © I EC 201 – 17 – The diagram s show that essentially it is the same data flow I n the m ultifunction case, one programm e is being recorded and a second is being played back These program m es exist on different parts of the recording m edia This is no different than the tim e shift case Although it is onl y one programm e, the ph ysical location of the data being recorded will be different from the data being played back as a tim e shift For this reason, this standard onl y requires the measurement of the m ultifunction m ode for a single tuner – 18 – I EC 62087-5: 201 © I EC 201 Bibliography I EC 61 938: 201 3, Multimedia systems – Guide to the recommended characteristics of analogue interfaces to achieve interoperability I EC 62087 (all parts), Audio, video, and related equipment – Methods of measurement for power consumption IEC 62087-2: 201 5, Audio, video, and related equipment – Methods of measurement for power consumption – Part 2: Signals and media IEC 62542: 201 3, Environmental standardization for electrical and electronic products and systems – Glossary of terms _