Table of Contents

FOREWORD
PREFACE
SECTION ONE - GENERAL
Clause
1 Scope
2 Object
3 Environment
SECTION TWO - VIDEO-TAPE CASSETTE
4 Mechanical parameters
   4.1 Datum planes
   4.2 Dimensions of cassette
   4.3 Tape winding
   4.4 Label and/or window area
   4.5 Cassette supporting areas
   4.6 Cassette holding areas
   4.7 Guiding grooves
   4.8 Safety tab
   4.9 Protecting lid
   4.10 Reels
   4.11 Extraction force (F1, F2)
   4.12 Friction torque of the take-up reel
SECTION THREE - VIDEOCASSETTE RECORDERS
5 Tape speed
6 Drum diameter
7 Tape tension
8 Maximum forces and tensions
9 Automatic stop system
10 Video heads
   10.1 Inclined azimuth angle
   10.2 Video head position on the drum
11 Track configuration and dimensions
   11.1 Record locations
   11.2 Switching position and video signal overlap
   11.3 Relations of video track and video signal field
SECTION FOUR - TAPE CHARACTERISTICS
12 Dimensions of video tape
   12.1 Magnetic tape thickness
   12.2 Magnetic tape width
13 Leader tape and trailer tape
   13.1 Automatic stop
   13.2 Dimensions of leader tape and trailer tape
   13.3 Splicing
14 Magnetic tape properties
   14.1 Magnetic orientation
   14.2 Coercivity
   14.3 Yield strength
SECTION FIVE - RECORDING CHARACTERISTICS
15 FM recording of luminance component
   15.1 Low-pass filter
   15.2 Pre-emphasis
   15.3 Clipping
   15.4 Modulation characteristics
   15.5 D.C. voltage superimposed on FM modulator
   15.6 Recording level
16 NTSC chrominance signal recording
   16.1 Recording method
   16.2 Recording level
   16.3 Recording signal spectrum
   16.4 Colour burst amplitude doubler
17 PAL chrominance signal recording
   17.1 Recording method
   17.2 Pilot burst signal
   17.3 Recording level
   17.4 Recording signal spectrum
18 SECAM chrominance signal recording
   18.1 Recording method
   18.2 Recording signal spectrum
   18.3 Initial phase of converted chrominance signal
   18.4 Rearrangement of converted chrominance signal
    18.5 Identification signal
   18.6 Recording level
19 Time difference between the luminance and chrominance
   signals
20 Audio signal recording
   20.1 Recording level
   20.2 De-emphasis characteristics
   20.3 Noise reduction
21 Control signal recording
   21.1 Recording signals
   21.2 Polarity
   21.3 Recording current waveform
FIGURES
APPENDIX A - Noise reduction

Abstract

Applies to magnetic video recording using 12.70mm (0.5in) tape cassettes on two-head helical-scan video cassette recorders. Gives dimensional and other characteristics necessary to permit the interchangeability of recorded cassettes. The requirements given relate to the 525 line-60 field and 625 line-50 field systems.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	SC 60B