IEC 61237-1 : 1.0

IEC 61237-1 : 1.0

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

International Electrotechnical Committee

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Table of Contents

Foreword
Clause
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 Co-planarity 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

Abstract

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

Document Type Standard
Status Current
Publisher International Electrotechnical Committee
Committee TC 60

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