INFORMATION TECHNOLOGY - ONE- AND TWO-SIDED DOUBLE DENSITYUNFORMATTED 5.25 INCH (130 MM) 96 TRACKS PER INCH (3.8 TRACKS PER MM) FLEXIBLE DISK CARTRIDGE - GENERAL, PHYSICAL, AND MAGNETIC REQUIREMENTS FOR 7958 BPR USE

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2017

Publisher

Information Technology Industry Council

1 Scope, Purpose and Application
  1.1 Scope
  1.2 Purpose
  1.3 Application
2 Referenced Standards
  2.1 American National Standards
  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 Resistivity
  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 Reference Surfaces
8 Magnetic Characteristics
  8.1 Data Surfaces
  8.2 Signal Quality
Appendixes
Appendix A Optic System for Light-Transmittance Measurement of
            Flexible Disk
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

Describes the general, physical, and magnetic requirements for interchangeability of the one- or two-sided, 5.25 inch (130 mm) (nominal), 96 tracks-per-inch (tpi) (3.8 tracks-per-millimeter (tpmm)) flexible disk cartridge (for 7958 bits-per-radian (bpr) use) as required to achieve unformatted disk cartridge interchange among disk drives using 80 tracks per side and associated information processing systems.

Committee	X3B8
DocumentType	Standard
Pages	18
ProductNote	Reconfirmed 2017
PublisherName	Information Technology Industry Council
Status	Current

IEEE 268-1992	American National Standard for Metric Practice
ISO 370:1975	Toleranced dimensions Conversion from inches into millimetres and vice versa
ASTM D 257 : 2014 : REDLINE	Standard Test Methods for DC Resistance or Conductance of Insulating Materials
ASTM D 1922 : 2015 : REDLINE	Standard Test Method for Propagation Tear Resistance of Plastic Film and Thin Sheeting by Pendulum Method