Analogue audio disk records and reproducing equipment

IEC 60098:2020 applies to analogue audio disk records and the corresponding professional and domestic reproducing equipment. It excludes amplifiers and loudspeakers, methods of measurement for which can be found in IEC 60268-3, IEC 60268-5, IEC 60268­21 and IEC 60268-22.
IEC 60098:2020 specifies the characteristics that are necessary to ensure compatibility between analogue audio disk records and the corresponding reproducing equipment.
It also lists and defines the most important characteristics affecting the performance of reproducing equipment, and establishes agreed methods of measurement for these characteristics.
IEC 60098:2020 cancels and replaces the third edition published in 1987. This edition constitutes a full revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) addition of a tolerance on groove width.

Disques audio analogiques et appareils de lecture

L'IEC 60098:2020 s'applique aux disques audio analogiques et aux appareils de lecture correspondants à usage professionnel et grand public. En sont exclus les amplificateurs et les haut-parleurs dont les méthodes de mesure peuvent être consultées respectivement dans l’IEC 60268-3, l’IEC 60268-5, l’IEC 60268­21 et l’IEC 60268-22.
Le présent document spécifie les caractéristiques qui sont nécessaires pour garantir la compatibilité entre les enregistrements sur disque analogique et l’appareil de lecture correspondant.
Il énumère et définit également les caractéristiques les plus importantes qui affectent les performances de l’appareil de lecture et établit des méthodes convenues pour la mesure de ces caractéristiques.
L'IEC 60098:2020 annule et remplace la troisième édition parue en 1987. Cette édition constitue une révision complète.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout d'une tolérance relative à la largeur du sillon.

General Information

Status
Published
Publication Date
09-Jan-2020
Current Stage
PPUB - Publication issued
Completion Date
10-Jan-2020
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IEC 60098
Edition 4.0 2020-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Analogue audio disk records and reproducing equipment
Disques audio analogiques et appareils de lecture
IEC 60098:2020-01(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60098
Edition 4.0 2020-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Analogue audio disk records and reproducing equipment
Disques audio analogiques et appareils de lecture
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.30 ISBN 978-2-8322-8098-0

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 60098:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 5

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

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

3 Terms and definitions ..................................................................................................... 7

4 General ........................................................................................................................... 8

4.1 Scales for graphical presentation of data ............................................................... 8

4.2 Scales for frequency characteristics ....................................................................... 8

5 The disk .......................................................................................................................... 8

5.1 Types of disk records .............................................................................................. 8

5.2 Dimensions of disks ............................................................................................... 9

5.3 Unbalance of disks ............................................................................................... 10

5.4 Direction of rotation .............................................................................................. 11

5.5 Direction of recording ........................................................................................... 11

5.6 Speed of rotation .................................................................................................. 11

6 The groove .................................................................................................................... 11

6.1 Direction of groove modulation .............................................................................. 11

6.2 Arrangement of stereophonic channels ................................................................ 12

6.2.1 Channel orientation ....................................................................................... 12

6.2.2 Channel phasing ........................................................................................... 12

6.2.3 Channel levels .............................................................................................. 12

6.2.4 Channel polarity ............................................................................................ 12

6.3 Groove dimensions .............................................................................................. 12

6.4 Lead-in groove ..................................................................................................... 12

6.5 Outer diameter of recorded surface ...................................................................... 12

6.6 Eccentricity of groove spiral ................................................................................. 12

6.7 Marker space ........................................................................................................ 13

6.8 Lead-out groove ................................................................................................... 13

6.9 Finishing groove ................................................................................................... 13

7 Label information .......................................................................................................... 13

8 Recording and reproducing characteristics .................................................................... 13

8.1 Recording characteristic ....................................................................................... 13

8.1.1 Standard recording characteristic .................................................................. 13

8.1.2 Recording chain tolerances ........................................................................... 14

8.2 Reproducing characteristic .................................................................................... 15

8.2.1 Standard reproducing characteristic ............................................................... 15

8.2.2 Reproducing chain tolerances ....................................................................... 15

9 Reproducing equipment ................................................................................................. 15

9.1 Speed of rotation .................................................................................................. 15

9.2 Automatic pickup lifting ......................................................................................... 15

9.3 Reproducing stylus ............................................................................................... 15

9.3.1 Clearances .................................................................................................... 15

9.3.2 Included angle (spherical styli only)............................................................... 16

9.3.3 Stylus rake (non-spherical styli only) ............................................................. 16

9.4 Arrangement of stereophonic channels ................................................................. 16

9.4.1 Channel orientation ....................................................................................... 16

---------------------- Page: 4 ----------------------
IEC 60098:2020 © IEC 2020 – 3 –

9.4.2 Channel phasing ........................................................................................... 16

9.4.3 Channel gain ................................................................................................. 16

9.4.4 Channel polarity ............................................................................................ 16

9.5 Interchangeability of pickup cartridges ................................................................. 16

9.5.1 Dimensions ................................................................................................... 16

9.5.2 Colour coding of connecting wires between pickup cartridge and pickup

arm ................................................................................................................ 17

9.5.3 Colour coding or marking of pickup cartridge terminals ................................. 17

10 Measurements ............................................................................................................... 17

10.1 Standard measurement conditions ........................................................................ 17

10.1.1 General ......................................................................................................... 17

10.1.2 Environment .................................................................................................. 18

10.1.3 Electric power supply ..................................................................................... 18

10.1.4 Pickup operation ............................................................................................ 18

10.1.5 Test records .................................................................................................. 18

10.2 Methods of measurement ...................................................................................... 18

10.2.1 General ......................................................................................................... 18

10.2.2 Maximum apparent power consumption ........................................................ 19

10.2.3 Mean deviation from rated speed ................................................................... 19

10.2.4 Wow and flutter ............................................................................................. 20

10.2.5 Maximum start time to reach actual or rated speed ...................................... 20

10.2.6 Signal/rumble ratio ........................................................................................ 20

10.2.7 Signal/hum ratio ............................................................................................ 21

10.2.8 Channel sensitivity at 1 000 Hz .................................................................... 22

10.2.9 Channel unbalance at 1 000 Hz (stereo use only) .......................................... 23

10.2.10 Separation at 1 000 Hz (stereo use only) ...................................................... 23

10.2.11 Frequency response ...................................................................................... 23

10.2.12 Tracking ability .............................................................................................. 24

11 Information required from manufacturers of record playing units ................................... 25

11.1 General ................................................................................................................. 25

11.2 Identification ......................................................................................................... 25

11.3 Structure .............................................................................................................. 25

11.3.1 Pickup cartridge ............................................................................................ 25

11.3.2 Drive system .................................................................................................. 25

11.3.3 Space requirements for unmounted units ....................................................... 26

11.3.4 Operational modes ........................................................................................ 26

12 Performance claims ....................................................................................................... 26

12.1 General ................................................................................................................. 26

12.2 Maximum apparent power consumption of the unit ................................................ 26

12.3 Speed of rotation .................................................................................................. 26

12.4 Signal/rumble ratio ................................................................................................ 27

12.5 Signal/hum ratio .................................................................................................... 27

12.6 Channel sensitivity at 1 000 Hz ............................................................................. 27

12.7 Channel unbalance at 1 000 Hz (stereo use only) ................................................. 27

12.8 Separation at 1 000 Hz (stereo use only) .............................................................. 27

12.9 Frequency response ............................................................................................. 27

12.10 Tracking ability ..................................................................................................... 27

Annex A (informative) Multipurpose test records .................................................................. 28

A.1 Available multi-purpose test record ....................................................................... 28

---------------------- Page: 5 ----------------------
– 4 – IEC 60098:2020 © IEC 2020
A.2 Multi-purpose test record no longer available new but which may still be

used ..................................................................................................................... 28

Annex B (normative) Test records for wow and flutter .......................................................... 30

Annex C (normative) Measurement of signal/rumble ratio .................................................... 31

C.1 Measuring instrument............................................................................................ 31

C.2 Test record ........................................................................................................... 31

C.3 Attenuation curve ................................................................................................. 31

Annex D (informative) Examples of test records for the measurement of channel

sensitivity, channel unbalance, separation, signal response, and separation response ....... 33

Annex E (informative) Tracking ability .................................................................................. 35

E.1 Test records for tracking ability ............................................................................. 35

E.2 Examples of test records no longer available new but which may still be

used ..................................................................................................................... 35

Figure 1 – Dimensions for record types 30xx and 25xx ........................................................... 9

Figure 2 – Dimensions for record type 17xx .......................................................................... 10

Figure 3 – Groove ................................................................................................................. 11

Figure 4 – Recording and reproducing characteristics ........................................................... 14

Figure 5 – Pickup cartridge ................................................................................................... 17

Figure C.1 – Attenuation curve for rumble meter ................................................................... 32

Table 1 – Standard types of disk ............................................................................................. 8

Table 2 – Colour coding of connecting wires ......................................................................... 17

Table 3 – Rated and measured speeds ................................................................................. 19

Table 4 – Relation of time t to actual speed .......................................................................... 20

Table 5 – Identification ......................................................................................................... 25

Table 6 – Pickup cartridge data ............................................................................................ 25

Table 7 – Drive system data ................................................................................................. 26

Table 8 – Operational modes ................................................................................................ 26

Table B.1 – Examples of test records that may be used ........................................................ 30

Table C.1 – Test records for measuring signal/rumble ratio ................................................... 31

Table D.1 – Examples of test records that may be used ........................................................ 33

Table E.1 – Low-frequency tracking ability – Method A in 10.2.12 ......................................... 35

Table E.2 – Low to middle frequency sweep tracking ability .................................................. 35

Table E.3 – High-frequency tracking ability ........................................................................... 35

---------------------- Page: 6 ----------------------
IEC 60098:2020 © IEC 2020 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ANALOGUE AUDIO DISK RECORDS AND REPRODUCING 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,

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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

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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 60098 has been prepared by IEC technical committee 100: Audio,

video and multimedia systems and equipment.

This fourth edition cancels and replaces the third edition published in 1987. This edition

constitutes a full revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) addition of a tolerance on groove width.
The text of this International Standard is based on the following documents:
CDV Report on voting
100/3261/CDV 100/3331/RVC

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 7 ----------------------
– 6 – IEC 60098:2020 © IEC 2020

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 8 ----------------------
IEC 60098:2020 © IEC 2020 – 7 –
ANALOGUE AUDIO DISK RECORDS AND REPRODUCING EQUIPMENT
1 Scope

This document applies to analogue audio disk records and the corresponding professional and

domestic reproducing equipment. It excludes amplifiers and loudspeakers, methods of

measurement for which can be found in IEC 60268-3, IEC 60268-5, IEC 60268-21 and
IEC 60268-22 .

This document specifies the characteristics that are necessary to ensure compatibility between

analogue audio disk records and the corresponding reproducing equipment.

It also lists and defines the most important characteristics affecting the performance of

reproducing equipment, and establishes agreed methods of measurement for these
characteristics
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

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

amendments) applies.

IEC 60050-806:1996, International Electrotechnical Vocabulary (IEV) – Part 806: Recording

and reproduction of audio and video
IEC 60050-806:1996/AMD1:2001
IEC 60050-806:1996/AMD2:2018

IEC 60263:1982, Scales and sizes for plotting frequency characteristics and polar diagrams

IEC 60386:1972, Method of measurement of speed fluctuations in sound recording and

reproducing equipment

IEC 60417, Graphical symbols for use on equipment (available at http://www.graphical-

symbols.info/equipment)
Electroacoustics – Sound level meters – Part 1: Specifications
IEC 61672-1:2013,

IEC 62368-1:2018, Audio/video, information and communication technology equipment – Part 1:

Safety requirements
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60050-806 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
__________
Under preparation. Stage at the time of publication: IEC CDV 60268-22:2019.
---------------------- Page: 9 ----------------------
– 8 – IEC 60098:2020 © IEC 2020
3.1
rated value

value of a quantity used for specification purposes, established for a specified set of operating

conditions of a component, device, equipment, or system

Note 1 to entry: The rated value is normally the value stated by the manufacturer.

[SOURCE: IEC 60050-151:2001, 151-16-08, modified – Note 1 to entry has been added.]

3.2
terminated, adj

connected to a specified impedance required for correct

operation or for specified test conditions

Note 1 to entry: 'Specified test conditions' can include open-circuit and short-circuit.

4 General
4.1 Scales for graphical presentation of data

Linear or logarithmic scales are recommended for graphical presentation. Linear decibel

scales are equivalent to logarithmic scales. Other kinds of scale, such as double logarithmic,

should be avoided. When using decibel scales, the zero reference should, if possible, be the

rated value. In those cases, where each of the scales refers directly to physical units, it is

recommended to avoid a combination of linear and logarithmic scales.

Where quantities represented by the axes are of the same kind, it is recommended that the

same unit length be used for both.

Linear scales with remote zero point should be avoided as far as possible. For further

information, see IEC 60263.
4.2 Scales for frequency characteristics

Graphs should be drawn with frequency in Hz on the x-axis with a logarithmic scale, and the

level expressed in dB on the y-axis with a linear scale. The scale ratio should be such that the

length representing one decade of frequency is the same as the length representing a 25 dB or

a 50 dB dif
...

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