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    I.S. EN 61237-4:1998

    Current The latest, up-to-date edition.

    BROADCAST VIDEO TAPE RECORDERS - METHODS OF MEASUREMENT - PART 4: ANALOGUE PERFORMANCE MEASUREMENTS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-1998

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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

    Foreword
    1 General
      1.1 Scope and object
      1.2 Normative references
      1.3 Definitions
    2 Manual and automatic measurements
    3 Procedure of measurement
    4 Environmental conditions
    5 Measurements on analogue audio baseband recording
      using bias
      5.1 Reproducing performance using calibration tape
      5.2 Overall performance using reference tape
    6 Measurement on analogue audio recording using
      frequency modulation (FM audio)
      6.1 Reproducing performance using calibration tape
      6.2 Overall performance using reference tape
    7 Special measurements
      7.1 Measurements on FM carrier (unmodulated carrier
          and deviation)
      7.2 Measurements on AGC (amplitude characteristic;
          attack time; hold time)
      7.3 Measurements on switchable noise reduction circuits
      7.4 Measurements on non-switchable noise reduction
          systems (in combination with a non-switchable AGC)
      7.5 Polarity test
    Annex A (informative) Method of measurement for magnetic
             tape flux
    Annex B (informative) Bibliography
    Annex ZA (normative) Normative references to international
             publications with their corresponding European
             publications

    Abstract - (Show below) - (Hide below)

    Specifies methods of measurement and special test signals for the analogue audio part of equipment mainly dedicated to recording reproduction of TV signals on magnetic tape on reels or in cassettes.

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

    Development Note For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current

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

    IEC 60268-8:1973 Sound system equipment - Part 8: Automatic gain control devices
    HD 483.3 : 200S2 SOUND SYSTEM EQUIPMENT - AMPLIFIERS
    EN 61041-3:1995 Non-broadcast videotape recorders - Methods of measurement - Part 3: Audio characteristics for FM recording
    IEC 60268-3:2013 Sound system equipment - Part 3: Amplifiers
    ANSI S4.6 : 82(R1992) RECORDED FLUX OF MAGNETIC SOUND RECORDS AT MEDIUM WAVELENGTHS, METHOD OF MEASURING
    IEC 61041-1:1990 Non-broadcast video tape recorders. Methods of measurement - Part1: General, video (NTSC/PAL) and audio (longitudinal)characteristics
    HD 574 : 1990 TYPE B HELICAL VIDEO RECORDERS
    AES 7 : 2000(R2005)
    EN 60094-3:1996/A3:1996 MAGNETIC TAPE SOUND RECORDING AND REPRODUCING SYSTEMS - PART 3: METHODS OF MEASURING THE CHARACTERISTICS OF RECORDING AND REPRODUCING EQUIPMENT FOR SOUND ON MAGNETIC TAPE
    EN 61105:1993 Reference tapes for video tape recorder systems
    EN 61041-1 : 1995 Non-broadcast video tape recorders - Methods of measurement - Part 1: General video (NTSC/PAL) and audio (longitudinal) characteristics
    IEC TR 61295:1994 Calibration tapes for broadcast VTRs
    IEC 61213:1993 Analogue audio recording on video tape - Polarity of magnetization
    IEC 61041-3:1993 Non-broadcast video tape recorders - Methods of measurement - Part 3: Audio characteristics for FM recording
    IEC 60094-2:1994 Magnetic tape sound recording and reproducing systems - Part 2: Calibration tapes
    IEC 61105:1991 Reference tapes for video tape recorder systems
    HD 483.1 : 200S2 SOUND SYSTEM EQUIPMENT - GENERAL
    IEC 60268-1:1985 Sound system equipment. Part 1: General
    EN 61213:1994 Analogue audio recording on video tape - Polarity of magnetization
    IEC 60094-3:1979 Magnetic tape sound recording and reproducing systems - Part 3: Methods of measuring the characteristics of recording and reproducing equipment for sound on magnetic tape
    EN 60651:1994/A2:2001 SOUND LEVEL METERS (IEC 60651:1979/A2:2000)
    IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
    DIN 45520:1973-01 MAGNETIC TAPE RECORDERS - MEASUREMENT OF THE ABSOLUTE LEVEL OF THE MAGNETIC FLUX AND ITS FREQUENCY RESPONSE ON MAGNETIC TAPES
    HD 483.2 : 200S2 SOUND SYSTEM EQUIPMENT - EXPLANATION OF GENERAL TERMS AND CALCULATION METHODS
    EN 61260:1995/A1:2001 ELECTROACOUSTICS - OCTAVE-BAND AND FRACTIONAL-OCTAVE-BAND FILTERS
    IEC 60651:1979+AMD1:1993+AMD2:2000 CSV Sound level meters
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