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ANSI INCITS 121 : 1984 : R2006
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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TWO-SIDED, UNFORMATTED, 8-INCH (200-MM), 48-TPI, DOUBLE-DENSITY, FLEXIBLE, DISK CARTRIDGE - GENERAL, PHYSICAL, AND MAGNETIC REQUIREMENTS FOR 13 262 FTPR TWO-HEADED APPLICATION
Hardcopy , PDF
23-04-2024
English
01-01-2006
1 Scope, Purpose, and Application
1.1 Scope
1.2 Purpose
1.3 Application
2 Referenced Standards
2.1 American National Standard
2.2 Other Standards
3 Definitions
4 General Requirements
4.1 Environment
4.2 Materials
4.3 Disk Cartridge Assembly
5 Physical Requirements
5.1 Dimensions
5.2 Torque
5.3 Physical Properties of the Coated Disk
5.4 Disk Coating
5.5 Magnetic Coating Resisitivity
5.6 Flammability
5.7 Toxicity
6 Test Track Requirements (Track and Recording Information)
6.1 Number
6.2 Width
6.3 Location
6.4 Physical Identification
6.5 Index
7 Standard Reference Surfaces
7.1 General
7.2 Primary Standard Amplitude Reference Surfaces
7.3 Secondary Standard Amplitude Reference Surfaces
8 Magnetic Characteristics
8.1 Data Surfaces
8.2 Signal Quality
Figures
Appendixes
Appendix A - Optic System
Figure A1 - Optic System for Light-Transmittance Measurement
of Flexible Disk
Appendix B - Drop-Thru Test Gauge
Figure B1 - Drop-Thru Test Gauge
Appendix C - Abrasivity Evaluation
C1 - Comparative Disk
C2 - Wear Test Disk
C3 - Wear Revolution
C4 - Test Procedure
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