• BS EN 61237-1:1994

    Current The latest, up-to-date edition.

    Broadcast video tape recorders. Methods of measurement Mechanical measurements

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  15-01-1995

    Publisher:  British Standards Institution

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

    Cooperating organizations
    National foreword
    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)
    Figures
    Annexes
    A. Magnetic development of recorded tape
    B. Bibliography
    ZA. (normative) Other international publications quoted
         in this standard with the references of the relevant
         European publications
    National annex NA (informative) Committees responsible
    National annex NB (informative) Cross-references

    Abstract - (Show below) - (Hide below)

    Contains measurements relating to the compatibility parameters for recording and measuring methods on the recorded tape. Tolerances for rated values for acceptable performance are not included and should be derived from the IEC publications as appropriate or the manufacturer\'s instructions.

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

    Committee EPL/100
    Development Note Also numbered as IEC 61237-1 Supersedes 91/03062 DC (11/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

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

    BS EN 61105:1994 Specification for reference tapes for video tape recorder systems
    BS 7537-1:1991 Measurement techniques and operational adjustments of broadcast VTRs Guide to operational adjustments on analogue composite broadcast VTRs
    BS 4967:1983 Specification for transverse track video tape recorders
    BS 6865:1987 Specification for time and control codes for video tape recorders
    BS 7537-2:1991 Measurement techniques and operational adjustments of broadcast VTRs Guide to special mechanical measurements and alignments
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