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  • IEC 62121:2001

    Current The latest, up-to-date edition.

    Methods of measurement for minidisc recorders/players

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English - French

    Published date:  18-10-2001

    Publisher:  International Electrotechnical Committee

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    1 Scope and object
    2 Normative references
    3 Terms and definitions
    4 Information required from manufacturers of MD
       recorders
       4.1 Introduction
       4.2 Identification
       4.3 Mechanical characteristics
       4.4 Electrical characteristics
       4.5 Environmental conditions
       4.6 Mechanical performance requirements
       4.7 Electrical performance requirements
       4.8 Results of measurement
    5 Measuring conditions
       5.1 Introduction
       5.2 Environmental conditions
       5.3 Power supply
       5.4 Input conditions
       5.5 Output condition
       5.6 MD recorder setting
       5.7 Other conditions
       5.8 Test disc
       5.9 Performance claims
       5.10 Measuring equipment
       5.11 Additional considerations
    6 Measurement of mechanical parameters
       6.1 Shock and vibration resistance
       6.2 Acoustic noise
    7 Measurement of electrical parameters
       7.1 Maximum power consumption
       7.2 Frequency response
       7.3 Signal to noise ratio
       7.4 Dynamic range
       7.5 Distortion and noise
       7.6 Channel separation
       7.7 Deviation of emphasis characteristic
       7.8 Modulation distortion
       7.9 Phase difference between channels
       7.10 Minimum input level
       7.11 Output voltage
       7.12 Pitch deviation
       7.13 Access times
       7.14 Trackability
    Annex A (normative) Test disc requirements
    Annex B (informative) Table of measurements - Results
    Annex C (informative) Available test disc
    Figures
    Tables

    Abstract - (Show below) - (Hide below)

    Specifies the measuring methods for recording and reproducing equipment for MiniDiscs that conform to IEC 61909. Lists and defines the characteristics affecting the performance of MiniDisc recorders or players, establishes conditions and methods of measurement of those characteristics, and standardizes the presentation of the results.

    General Product Information - (Show below) - (Hide below)

    Committee TC 100/TA 6
    Development Note Stability Date: 2025. (11/2012)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC TR 60268-13:1998 Sound system equipment - Part 13: Listening tests on loudspeakers
    ISO 3744:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
    ISO 1996-2:2017 Acoustics — Description, measurement and assessment of environmental noise — Part 2: Determination of sound pressure levels
    IEC 60068-2-27:2008 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
    ISO 3743-2:1994 Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Methods for special reverberation test rooms
    IEC 61909:2000 Audio recording - Minidisc system
    IEC 61606:1997 Audio and audiovisual equipment - Digital audio parts - Basic methods of measurement of audio characteristics
    IEC 60721-3-5:1997 Classification of environmental conditions - Part 3: Classificationof groups of environmental parameters and their severities -Section 5: Ground vehicle installations
    ISO 3740:2000 Acoustics Determination of sound power levels of noise sources Guidelines for the use of basic standards
    IEC 60958:1989 Digital audio interface
    ISO 1996-3:1987 Acoustics Description and measurement of environmental noise Part 3: Application to noise limits
    ISO 532:1975 Acoustics Method for calculating loudness level
    ISO 1996-1:2016 Acoustics Description, measurement and assessment of environmental noise Part 1: Basic quantities and assessment procedures
    ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
    ISO 3745:2012 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms
    IEC 60651:1979+AMD1:1993+AMD2:2000 CSV Sound level meters
    ISO 3743-1:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-walled test room
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