• I.S. EN 61237-1:1995

    Current The latest, up-to-date edition.

    BROADCAST VIDEO TAPE RECORDERS METHODS OF MEASUREMENT - PART 1: MECHANICAL MEASUREMENTS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-1995

    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 Scope
    2 Normative references
    3 General
    4 Test conditions
    5 Measuring equipment
      5.1 Mechanical measurements
      5.2 Optical measurements
    6 Recorder measurements
      6.1 Diameter of drum
      6.2 Projection of video head pole tips
          6.2.1 Mechanical measurement
          6.2.2 Optical measurement
      6.3 Gap width of video heads
      6.4 Coplanarity error of video heads
    7 Measurements on recorded tape
      7.1 Tape speed and pitch of the video tracks
          7.1.1 Tape speed v (first method)
          7.1.2 Track pitch J (first method)
          7.1.3 Tape speed and pitch of the video tracks
                (second method)
      7.2 Position of the video reference point (VRP)
          7.2.1 Measurement of the VRP position (first method)
          7.2.2 Tracking and drum phase error (second method)
      7.3 Location of records on sound and time code tracks
          7.3.1 Track location to the reference tape edge
          7.3.2 Longitudinal location of records
      7.4 Video track geometry
          7.4.1 Video track width 1
          7.4.2 Cross-tape measuring technique (first method)
          7.4.3 Dynamic track measurement (second method)
    Annex A (normative) Magnetic development of recorded tape
    Annex B (informative) Bibliography
    Annex ZA (normative) Other international publications quoted
             in this standard with the references of the relevant
             European publications

    Abstract - (Show below) - (Hide below)

    Describes the mechanical measurement methods on video tape recorders relating to the compatibility parameters for recording and measuring methods of the recorded tape.

    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 60347:1982 Transverse track recorders
    HD 451 : 200S1 TRANSVERSE TRACK VIDEO RECORDERS
    HD 507 : 200S1 TIME AND CONTROL CODE FOR VIDEO TAPE RECORDERS
    EN 61105:1993 Reference tapes for video tape recorder systems
    IEC TR 61295:1994 Calibration tapes for broadcast VTRs
    IEC 61105:1991 Reference tapes for video tape recorder systems
    IEC 60461:2010 Time and control code
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