Audio, video, and related equipment - Determination of power consumption - Part 6: Audio equipment

IEC 62087-6:2015 specifies the determination of the power consumption of audio equipment for consumer use. The various modes of operation which are relevant for measuring power consumption are defined. This first edition of IEC 62087-6 cancels and replaces Clause 9 of IEC 62087:2011. This standard together with IEC 62087-1 to IEC 62087-5 cancels and replaces IEC 62087:2011. This International Standard constitutes a technical revision. This edition includes the following significant technical changes with respect to Clause 9 of IEC 62087:2011. The definition of the input signal is changed. The output power measurement of amplifiers is changed. The measurement method for compact audio systems including loudspeakers is added. Methods for measuring On-decoding, idle and auto power down functions are added. Portions of the document related to general measuring conditions and procedures are now contained in IEC 62087-1:2015. Portions of the document related to signals and media are now in IEC 62087-2:2015. The titles have changed in order to comply with the current directives and to accommodate the new multipart structure of IEC 62087.

Appareils audio, vidéo et matériel connexe - Détermination de la consommation de puissance - Partie 6: Matériel audio

L'IEC 62087-6:2015 spécifie la détermination de la consommation de puissance des matériels audio pour le grand public.
Les différents modes de fonctionnement appropriés à la mesure de la consommation de puissance sont définis.
La présente norme est limitée au matériel audio qui peut être raccordé au réseau d'alimentation électrique. Un matériel audio qui inclut une batterie principale non amovible n'est pas couvert par la présente norme. Un matériel audio peut inclure un nombre quelconque de batteries auxiliaires.
Les conditions de mesure de la présente norme sont celles de l'usage normal du matériel et peuvent différer d'autres conditions, par exemple celles spécifiées dans les normes de sécurité.
L'IEC 62087-6:2015 annule et remplace l'Article 9 de l'IEC 62087:2011. La présente norme, en conjonction avec les IEC 62087-1 à IEC 62087-5, annule et remplace l'IEC 62087:2011. La présente norme constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'Article 9 de l'IEC 62087:2011:
– la définition du signal d'entrée a été modifiée;
– la mesure de la puissance de sortie des amplificateurs a été modifiée;
– la méthode de mesure des systèmes audio compacts qui incluent des haut-parleurs a été ajoutée;
– des méthodes de mesure de marche décodage, attente et des fonctions d'extinction automatique ont été ajoutées;
– les parties du document qui concernent les conditions générales et les modes opératoires de mesure sont désormais contenues dans l'IEC 62087-1:2015;
– les parties du document qui concernent les signaux et les supports se trouvent désormais dans l'IEC 62087-2:2015;
– les titres ont été modifiés afin de se conformer aux directives actuelles et de tenir compte de la nouvelle structure en plusieurs parties de l'IEC 62087.

General Information

Status
Published
Publication Date
04-Jun-2015
Current Stage
PPUB - Publication issued
Start Date
05-Jun-2015
Completion Date
05-Jun-2015
Ref Project

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IEC 62087-6
Edition 1.0 2015-06
INTERNATIONAL
STANDARD
colour
inside
Audio, video and related equipment – Determination of power consumption –
Part 6: Audio equipment
IEC 62087-6:2015-06(en)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2015 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

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---------------------- Page: 2 ----------------------
IEC 62087-6
Edition 1.0 2015-06
INTERNATIONAL
STANDARD
colour
inside
Audio, video and related equipment – Determination of power consumption –
Part 6: Audio equipment
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.10 ISBN 978-2-8322-2686-5

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC 62087-6:2015 © IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms, definitions and abbreviations ............................................................................... 7

3.1 Terms and definitions .............................................................................................. 7

3.2 Abbreviations .......................................................................................................... 9

4 Specification of operating modes and functions ............................................................... 9

5 Measurement conditions ................................................................................................ 10

5.1 General ................................................................................................................. 10

5.2 Power source ........................................................................................................ 11

5.3 Environmental conditions ...................................................................................... 11

5.4 Acoustical environment ......................................................................................... 11

5.5 Adjustment of controls .......................................................................................... 11

5.6 Power measurement instrument ............................................................................ 11

5.7 Signal generation .................................................................................................. 11

5.8 Quantities to be specified and their accuracy ........................................................ 11

5.9 Loading of terminals ............................................................................................. 11

5.10 Output level .......................................................................................................... 11

5.10.1 General ......................................................................................................... 11

5.10.2 Output level at 1 W ........................................................................................ 11

5.10.3 Output level at one-eighth of non-clipped power ............................................ 11

5.11 Sound level adjustments ....................................................................................... 12

5.12 Sound pressure level meter .................................................................................. 12

5.13 Additional functions ............................................................................................... 12

5.14 Operating modes .................................................................................................. 12

5.14.1 General ......................................................................................................... 12

5.14.2 On modes ...................................................................................................... 12

5.14.3 Partial On modes ........................................................................................... 12

5.14.4 Off mode ....................................................................................................... 13

5.14.5 Auto power down function .............................................................................. 13

6 Measurement procedure ................................................................................................ 13

6.1 Order of measurements ........................................................................................ 13

6.2 Setup .................................................................................................................... 14

6.2.1 General ......................................................................................................... 14

6.2.2 Audio equipment terminals and settings ......................................................... 15

6.2.3 Compact audio system including loudspeaker ................................................ 16

6.3 Power measurement ............................................................................................. 16

6.3.1 General ......................................................................................................... 16

6.3.2 Off and Partial On modes .............................................................................. 16

6.3.3 On modes ...................................................................................................... 17

6.3.4 Auto power down ........................................................................................... 18

Annex A (informative) Location for sound pressure test ....................................................... 19

A.1 General ................................................................................................................. 19

A.2 Example test locations .......................................................................................... 19

---------------------- Page: 4 ----------------------
IEC 62087-6:2015 © IEC 2015 – 3 –

Bibliography .......................................................................................................................... 21

Figure 1 – Order of measurements ........................................................................................ 14

Figure 2 – Separate components .......................................................................................... 14

Figure 3 – Audio systems (non separable components) ........................................................ 15

Figure 4 – Audio systems (separable conponents) ................................................................ 15

Figure 5 – Compact audio system including loudspeaker ...................................................... 15

Figure 6 – Auto power down function .................................................................................... 18

Figure A.1 – Top view ........................................................................................................... 19

Figure A.2 – Top and front view ............................................................................................ 20

Figure A.3 – Side view .......................................................................................................... 20

Table 1 – Operating modes and functions ............................................................................. 10

---------------------- Page: 5 ----------------------
– 4 – IEC 62087-6:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUDIO, VIDEO AND RELATED EQUIPMENT –
DETERMINATION OF POWER CONSUMPTION –
Part 6: Audio equipment
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 standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

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other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

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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 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 62087-6 has been prepared by technical area 12: AV energy

efficiency and smart grid applications, of IEC technical committee 100: Audio, video and

multimedia systems and equipment.

This first edition of IEC 62087-6 cancels and replaces Clause 9 of IEC 62087:2011. This

standard together with IEC 62087-1 to IEC 62087-5 cancels and replaces IEC 62087:2011.

This International Standard constitutes a technical revision.

This edition includes the following significant technical changes with respect to Clause 9 of

IEC 62087:2011.
– The definition of the input signal is changed.
– The output power measurement of amplifiers is changed.

– The measurement method for compact audio systems including loudspeakers is added.

---------------------- Page: 6 ----------------------
IEC 62087-6:2015 © IEC 2015 – 5 –

– Methods for measuring On-decoding, idle and auto power down functions are added.

– Portions of the document related to general measuring conditions and procedures are now

contained in IEC 62087-1:2015.

– Portions of the document related to signals and media are now in IEC 62087-2:2015.

– The titles have changed in order to comply with the current directives and to accommodate

the new multipart structure of IEC 62087.
The text of this standard is based on the following documents:
FDIS Report on voting
100/2471/FDIS 100/2501/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 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.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
• amended.
A bilingual version of this publication may be issued at a later date.
---------------------- Page: 7 ----------------------
– 6 – IEC 62087-6:2015 © IEC 2015
INTRODUCTION

This part of IEC 62087 specifies methods of measurements for the power consumption of

audio equipment for consumer use. It is used in conjunction with IEC 62087-2, which specifies

signals and media. This International Standard includes measurements in the On mode

(operation), which was previously identified as “On (average) mode” and adds methods for

measuring power consumption in the On-play, On-decoding, and idle sub-modes. These

methods consider the effects of the auto power down function. Additionally, this standard

includes determination of power consumption in the Partial On mode.

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
---------------------- Page: 8 ----------------------
IEC 62087-6:2015 © IEC 2015 – 7 –
AUDIO, VIDEO AND RELATED EQUIPMENT –
DETERMINATION OF POWER CONSUMPTION –
Part 6: Audio equipment
1 Scope

This part of IEC 62087 specifies the determination of the power consumption of audio

equipment for consumer use.

The various modes of operation which are relevant for measuring power consumption are

defined.

This standard is limited to audio equipment which can be connected to the mains. Audio

equipment that includes a non-removable, main battery is not covered by this standard. Audio

equipment may include any number of auxiliary batteries.

The measuring conditions in this standard represent the normal use of the equipment and

may differ from other specific conditions, for example as specified 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 edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60268-5:2003, Sound system equipment – Part 5: Loudspeakers
IEC 60268-5:2003/AMD1:2007
IEC 62087-1:2015, Audio, video, and related equipment – Determination of power
consumption – Part 1: General
IEC 62087-2:2015, Audio, video, and related equipment – Determination of power
consumption – Part 2: Signals and media
IEC 62301:2011, Household electrical appliances − Measurement of standby power
3 Terms, definitions and abbreviations
3.1 Terms and definitions

For the purposes of this document, the terms and definitions in IEC 62087-1:2015,

IEC 62087-2:2015, and the following apply.
3.1.1
additional functions
functions that are not required for the basic operation of the device
Note 1 to entry: Functions other than a main function.
---------------------- Page: 9 ----------------------
– 8 – IEC 62087-6:2015 © IEC 2015
3.1.2
audio equipment

appliance which has the main function of reproducing analogue and/or digital audio signals

3.1.3
audio systems

audio equipment of separable or non-separable components for one or more audio functions

3.1.4
compact audio systems including loudspeakers

amplifier and one or more audio sources in a single enclosure, which might also contain the

loudspeakers

Note 1 to entry: The loudspeakers can be attached to, and separable from, the main enclosure.

3.1.5
free-field conditions

environment, such as an anechoic room, in which the sound pressure decreases by a factor of

2 with the doubling of the distance from a point source
3.1.6
main function

function, specified by the manufacturer, which produces sound from loudspeaker(s) and/or

output terminal(s)
3.1.7
mass storage device
non-removable, non-volatile storage for the recording of audio signals
3.1.8
multi-channel
two or more channels
3.1.9
non-clipped power

sine-wave power dissipated in the rated load impedance, measured at 1 000 Hz or the

frequency of the peak response, if the operation at 1 kHz is not intended, at the onset of

clipping at either one or both peaks
3.1.10
rated load impedance

impedance specified by the manufacturer and assumed to be a constant pure resistance

measured at the output terminals of an amplifier
3.1.11
separate components
standalone audio equipment that provides one or more audio functions
3.1.12
sound pressure level
SPL
logarithm of the ratio of a given sound pressure to the reference sound pressure

Note 1 to entry: Unless otherwise specified, the reference sound pressure is 20 µPа for airborne sound.

Note 2 to entry: Unless otherwise specified, the sound pressures are understood to be expressed in root-mean-

square values.

Note 3 to entry: Sound pressure level in decibels is 20 times the logarithm to the base ten of the ratio.

---------------------- Page: 10 ----------------------
IEC 62087-6:2015 © IEC 2015 – 9 –
3.1.13
surround sound equipment
multi-channel audio equipment that includes front and rear channel capabilities
EXAMPLE Home theatre in a box, integrated surround sound amplifier.
3.2 Abbreviations
′ Prime
PS Power Supply unit
SPL Sound Pressure Level
SW Switch unit
UUT Unit Under Test
4 Specification of operating modes and functions
Table 1 describes the various operating modes and functions for audio equipment.

For all modes, main batteries, if any, shall be removed for the duration of the measurement

procedure. (See IEC 62087-1:2015, 5.1.1.1)
---------------------- Page: 11 ----------------------
– 10 – IEC 62087-6:2015 © IEC 2015
Table 1 – Operating modes and functions
Power Mode Sub-mode Function(s) Description
0 W Disconnected Disconnected – Disconnected from The audio equipment is
the main power disconnected or galvanically
source isolated from all external power
sources.
≥0 W Off Off – Off The audio equipment is connected
to a
...

IEC 62087-6
Edition 1.0 2015-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Audio, video and related equipment – Determination of power consumption –
Part 6: Audio equipment
Appareils audio, vidéo et matériel connexe – Détermination de la consommation
de puissance –
Partie 6: Matériel audio
IEC 62087-6:2015-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62087-6
Edition 1.0 2015-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Audio, video and related equipment – Determination of power consumption –
Part 6: Audio equipment
Appareils audio, vidéo et matériel connexe – Détermination de la consommation
de puissance –
Partie 6: Matériel audio
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.10 ISBN 978-2-8322-9332-4

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 62087-6:2015 © IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms, definitions and abbreviations ............................................................................... 7

3.1 Terms and definitions .............................................................................................. 7

3.2 Abbreviations .......................................................................................................... 9

4 Specification of operating modes and functions ............................................................... 9

5 Measurement conditions ................................................................................................ 10

5.1 General ................................................................................................................. 10

5.2 Power source ........................................................................................................ 11

5.3 Environmental conditions ...................................................................................... 11

5.4 Acoustical environment ......................................................................................... 11

5.5 Adjustment of controls .......................................................................................... 11

5.6 Power measurement instrument ............................................................................ 11

5.7 Signal generation .................................................................................................. 11

5.8 Quantities to be specified and their accuracy ........................................................ 11

5.9 Loading of terminals ............................................................................................. 11

5.10 Output level .......................................................................................................... 11

5.10.1 General ......................................................................................................... 11

5.10.2 Output level at 1 W ........................................................................................ 11

5.10.3 Output level at one-eighth of non-clipped power ............................................ 11

5.11 Sound level adjustments ....................................................................................... 12

5.12 Sound pressure level meter .................................................................................. 12

5.13 Additional functions ............................................................................................... 12

5.14 Operating modes .................................................................................................. 12

5.14.1 General ......................................................................................................... 12

5.14.2 On modes ...................................................................................................... 12

5.14.3 Partial On modes ........................................................................................... 12

5.14.4 Off mode ....................................................................................................... 13

5.14.5 Auto power down function .............................................................................. 13

6 Measurement procedure ................................................................................................ 13

6.1 Order of measurements ........................................................................................ 13

6.2 Setup .................................................................................................................... 14

6.2.1 General ......................................................................................................... 14

6.2.2 Audio equipment terminals and settings ......................................................... 15

6.2.3 Compact audio system including loudspeaker ................................................ 16

6.3 Power measurement ............................................................................................. 16

6.3.1 General ......................................................................................................... 16

6.3.2 Off and Partial On modes .............................................................................. 16

6.3.3 On modes ...................................................................................................... 17

6.3.4 Auto power down ........................................................................................... 18

Annex A (informative) Location for sound pressure test ....................................................... 19

A.1 General ................................................................................................................. 19

A.2 Example test locations .......................................................................................... 19

---------------------- Page: 4 ----------------------
IEC 62087-6:2015 © IEC 2015 – 3 –

Bibliography .......................................................................................................................... 21

Figure 1 – Order of measurements ........................................................................................ 14

Figure 2 – Separate components .......................................................................................... 14

Figure 3 – Audio systems (non separable components) ........................................................ 15

Figure 4 – Audio systems (separable conponents) ................................................................ 15

Figure 5 – Compact audio system including loudspeaker ...................................................... 15

Figure 6 – Auto power down function .................................................................................... 18

Figure A.1 – Top view ........................................................................................................... 19

Figure A.2 – Top and front view ............................................................................................ 20

Figure A.3 – Side view .......................................................................................................... 20

Table 1 – Operating modes and functions ............................................................................. 10

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– 4 – IEC 62087-6:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUDIO, VIDEO AND RELATED EQUIPMENT –
DETERMINATION OF POWER CONSUMPTION –
Part 6: Audio equipment
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 standardization in the electrical and electronic fields. To this end and

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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

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transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

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expenses arising out 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 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 62087-6 has been prepared by technical area 12: AV energy

efficiency and smart grid applications, of IEC technical committee 100: Audio, video and

multimedia systems and equipment.

This first edition of IEC 62087-6 cancels and replaces Clause 9 of IEC 62087:2011. This

standard together with IEC 62087-1 to IEC 62087-5 cancels and replaces IEC 62087:2011. This

International Standard constitutes a technical revision.

This edition includes the following significant technical changes with respect to Clause 9 of

IEC 62087:2011.
– The definition of the input signal is changed.
– The output power measurement of amplifiers is changed.

– The measurement method for compact audio systems including loudspeakers is added.

– Methods for measuring On-decoding, idle and auto power down functions are added.

– Portions of the document related to general measuring conditions and procedures are now

contained in IEC 62087-1:2015.
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IEC 62087-6:2015 © IEC 2015 – 5 –

– Portions of the document related to signals and media are now in IEC 62087-2:2015.

– The titles have changed in order to comply with the current directives and to accommodate

the new multipart structure of IEC 62087.
The text of this standard is based on the following documents:
FDIS Report on voting
100/2471/FDIS 100/2501/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 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.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
• amended.
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INTRODUCTION

This part of IEC 62087 specifies methods of measurements for the power consumption of audio

equipment for consumer use. It is used in conjunction with IEC 62087-2, which specifies signals

and media. This International Standard includes measurements in the On mode (operation),

which was previously identified as “On (average) mode” and adds methods for measuring power

consumption in the On-play, On-decoding, and idle sub-modes. These methods consider the

effects of the auto power down function. Additionally, this standard includes determination of

power consumption in the Partial On mode.

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
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IEC 62087-6:2015 © IEC 2015 – 7 –
AUDIO, VIDEO AND RELATED EQUIPMENT –
DETERMINATION OF POWER CONSUMPTION –
Part 6: Audio equipment
1 Scope

This part of IEC 62087 specifies the determination of the power consumption of audio

equipment for consumer use.

The various modes of operation which are relevant for measuring power consumption are

defined.

This standard is limited to audio equipment which can be connected to the mains. Audio

equipment that includes a non-removable, main battery is not covered by this standard. Audio

equipment may include any number of auxiliary batteries.

The measuring conditions in this standard represent the normal use of the equipment and may

differ from other specific conditions, for example as specified 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 edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.
IEC 60268-5:2003, Sound system equipment – Part 5: Loudspeakers
IEC 60268-5:2003/AMD1:2007

IEC 62087-1:2015, Audio, video, and related equipment – Determination of power consumption

– Part 1: General
IEC 62087-2:2015, Audio, video, and related equipment – Determination of power
consumption – Part 2: Signals and media
IEC 62301:2011, Household electrical appliances  Measurement of standby power
3 Terms, definitions and abbreviations
3.1 Terms and definitions

For the purposes of this document, the terms and definitions in IEC 62087-1:2015,

IEC 62087-2:2015, and the following apply.
3.1.1
additional functions
functions that are not required for the basic operation of the device
Note 1 to entry: Functions other than a main function.
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3.1.2
audio equipment

appliance which has the main function of reproducing analogue and/or digital audio signals

3.1.3
audio systems

audio equipment of separable or non-separable components for one or more audio functions

3.1.4
compact audio systems including loudspeakers

amplifier and one or more audio sources in a single enclosure, which might also contain the

loudspeakers

Note 1 to entry: The loudspeakers can be attached to, and separable from, the main enclosure.

3.1.5
free-field conditions

environment, such as an anechoic room, in which the sound pressure decreases by a factor of

2 with the doubling of the distance from a point source
3.1.6
main function

function, specified by the manufacturer, which produces sound from loudspeaker(s) and/or

output terminal(s)
3.1.7
mass storage device
non-removable, non-volatile storage for the recording of audio signals
3.1.8
multi-channel
two or more channels
3.1.9
non-clipped power

sine-wave power dissipated in the rated load impedance, measured at 1 000 Hz or the

frequency of the peak response, if the operation at 1 kHz is not intended, at the onset of clipping

at either one or both peaks
3.1.10
rated load impedance

impedance specified by the manufacturer and assumed to be a constant pure resistance

measured at the output terminals of an amplifier
3.1.11
separate components
standalone audio equipment that provides one or more audio functions
3.1.12
sound pressure level
SPL
logarithm of the ratio of a given sound pressure to the reference sound pressure

Note 1 to entry: Unless otherwise specified, the reference sound pressure is 20 µPа for airborne sound.

Note 2 to entry: Unless otherwise specified, the sound pressures are understood to be expressed in root-mean-

square values.

Note 3 to entry: Sound pressure level in decibels is 20 times the logarithm to the base ten of the ratio.

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3.1.13
surround sound equipment
multi-channel audio equipment that includes front and rear channel capabilities
EXAMPLE Home theatre in a box, integrated surround sound amplifier.
3.2 Abbreviations
′ Prime
PS Power Supply unit
SPL Sound Pressure Level
SW Switch unit
UUT Unit Under Test
4 Specification of operating modes and functions
Table 1 describes the various operating modes and functions for audio equipment.

For all modes, main batteries, if any, shall be removed for the duration of the measurement

procedure. (See IEC 62087-1:2015, 5.1.1.1)
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Table 1 – Operating modes and functions
Power Mode Sub-mode Function(s) Description
0 W Disconnected Disconnected – Disconnected from The audio equipment is
the main power disconnected or galvanically
source isolated from all external power
sources.
≥0 W Off Off – Off The audio equipment is connected
to an external power source and
provides no functions that depend
on an external power source. The
equipment cannot be switched into
any other mode with the remote
control unit, or an external or
internal signal. Note that some
power may be consumed if an EMC
filter or other components exist on
the source side of the power switch.
≥0 W Partial on Standby- – Wake on The audio equipment is connected
passive to an external power source and
• remote control
does not provide its main functions.
• internal signal
The equipment can be switched into
another mode with the remote
control unit or an internal signal, but
not with an external signal.
Standby- – Wake on The audio equipment is connected
active, low to an external power source and
• remote control
does not provide its main functions.
• internal signal
The equipment can be switched into
• external signal
another mode with the remote
control unit, an internal signal, or an
external signal.
Standby- – Wake on The audio equipment is connected
active, high to an external power source and
• remote control
does not provide its main functions.
• internal signal
The equipment can be switched into
• external signal another mode with the remote
control unit, an internal signal, or an
Data communications
external signal. Additionally, the
equipment is exchanging/receiving
data with/from an external source.
>0 W On Idle Idle Form of On mode during which the
equipment is capable of performing
its main function(s) but is not doing
so.
On-play Operation The audio equipment is performing
its main functions.
On-decoding Operation The audio equipment is decoding
compressed audio from a mass
storage device or external input.
The audio equipment is recording a
On-record Operation
single programme and may or may
not provide the audio outputs of the
programme being recorded.
The terms 'standby mode' or 'sleep mode' also describe the Partial On mode.
5 Measurement conditions
5.1 General

The measurement conditions clause specifies requirements that are independent of the

equipment to be measured. When setting up a test laboratory, these requirements shall be

taken into account.
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The requirements in this clause apply to the measurement methods specified in Clause 6.

5.2 Power source
Defined in IEC 62087-1:2015, 5.1.1.
5.3 Environmental conditions
Defined in IEC 62087-1:2015, 5.1.2.
5.4 Acoustical environment

SPL measurements shall be made under the free-field conditions specified in IEC 60268-5:2003,

5.2.
5.5 Adjustment of controls

The controls not specifically mentioned in this standard shall be in the position adjusted by the

manufacturer for shipment to the end user. These controls shall remain in this state for the

duration of the test.
5.6 Power measurement instrument
Defined in IEC 62087-1:2015, 5.1.1.
5.7 Signal generation
Defined in IEC 62087-2:2015, Clause 6.
5.8 Quantities to be specified and their accuracy

Unless otherwise stated, the values of voltage, current, sound pressure, etc., mentioned in this

standard are assumed to be r.m.s. quantities. For most purposes, it is sufficient to measure

electrical quantities with an accuracy of ± 0,15 dB and acoustical quantities with an accuracy

of ± 1 dB. Unless otherwise stated, it is assumed that the distance between a measurement

point and its reference point is determined with an accuracy of ±0,01 m. The accuracy of

measurement required depends only on the purpose for which the results are to be used.

5.9 Loading of terminals

All loudspeaker terminals should be terminated with the minimum impedance as specified by

the manufacturer.
5.10 Output level
5.10.1 General

In the case of surround sound equipment, only the front left and front right speaker terminals

shall be loaded.
5.10.2 Output level at 1 W
The volume control shall be adjusted to obtain 1 W at the loudspeaker terminals.
5.10.3 Output level at one-eighth of non-clipped power

If the maximum non-clipped power is less than 8 W, the volume control shall be adjusted to

obtain one-eighth of non-clipped power at the loudspeaker terminals.
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Where the non-clipped power cannot be obtained using any audio test signal, the maximum

attainable output power is taken.
5.11 Sound level adjustments

The volume control shall be set to a level at which a SPL of 60 dB is measured 1 m from the

loudspeaker.

NOTE An SPL of 60 dB is not necessarily the same output level as 1 W at the loudspeaker terminals.

5.12 Sound pressure level meter

Measurements in free-field condition shall be made using a sound pressure level meter having

a known calibration.

NOTE Class 1 certified meter, specified in IEC 61672, with A-weighting, specified in IEC 60268-1.

5.13 Additional functions

Additional functions shall be turned off during the measurement process in the cases that those

functions can be turned on and off by the end user.
5.14 Operating modes
5.14.1 General
Audio equipment can operate in many modes.
5.14.2 On modes
5.14.2.1 On-play
The audio equipment is performing the main func
...

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