Table of Contents

Contents
Foreword
Clause
1. General
    1.1 Scope
    1.2 Normative reference
    1.3 Definitions, symbols and abbreviations
    1.4 Environment and test conditions
2. Cassette
    2.1 Mechanical parameters
         2.1.1 Cassette dimensions
         2.1.2 Identification of cassette
         2.1.3 Tape length
         2.1.4 Coating face
         2.1.5 Datum hole and datum plane
         2.1.6 Window and labels
         2.1.7 Identification/MIC contacts
         2.1.8 Accidental erasure prevention holes
         2.1.9 Leader/trailer tape
         2.1.10 Reels
         2.1.11 Protection lid
    2.2 Tape specification
         2.2.1 Type of magnetic tape
         2.2.2 Base
         2.2.3 Width
         2.2.4 Width fluctuation
         2.2.5 Tape thickness
         2.2.6 Transmissivity
3. Helical recordings
    3.1 Tape speed
    3.2 Record location and dimensions
         3.2.1 Reference edge
         3.2.2 Effective area
         3.2.3 Record and playback guaranteed heights
         3.2.4 Track pitch
         3.2.5 Helical track
4. System data
    4.1 Introduction
    4.2 Application ID
    4.3 System data for tape
         4.3.1 Basic system data
         4.3.2 Application ID on tape
         4.3.3 Area
    4.4 System data for MIC
         4.4.1 Basic system data
         4.4.2 Application ID on MIC
         4.4.3 Space
5. Modulation
    5.1 Introduction
    5.2 Byte position number 0,1,2
         5.2.1 Sync patterns
         5.2.2 Randomization and modulation
    5.3 Byte position number 3k, 3k + 1, 3k + 2 (where k > 1)
         5.3.1 Randomization
         5.3.2 Modulation
    5.4 Track F0, track F1, track F2
    5.5 Edit gap, run-up, guard area, preamble and postamble
6. ITI sector (area 0)
    6.1 Introduction
    6.2 ITI preamble
    6.3 SSA (start-sync block area)
    6.4 TIA (track information area)
    6.5 ITI postamble
7. Magnetization
    7.1 Polarity
    7.2 Recorded equalization
    7.3 Record level
Annex A (normative) LP mode (long play mode with narrow track
        pitch)

Abstract

Gives the content, format and recording method of the data blocks that form the helical records on the tape. Describes the common specifications for cassettes, modulation method, magnetization and basic system data, for helical-scan digital video cassette recording system with the use of a 6,35 mm (1/4 inch) magnetic tape. This standard is aimed at defining the electrical and mechanical characteristics of equipment which will give the interchangeability of recorded cassettes.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 100