TWO-SIDED, DOUBLE-DENSITY, UNFORMATTED, 5.25 INCH (130-MM), 48-TPI (1,9-TPMM), FLEXIBLE DISK CARTRIDGE FOR 7958 BPR USE - GENERAL, PHYSICAL, AND MAGNETIC REQUIREMENTS

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2006

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 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 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 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 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 the interchangeability of the two-sided, 5.25 inch (130 mm) (nominal), 48 tracks-per-inch (tpi) 1,9 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 40 tracks per side and associated information processing systems.

Committee	X3B8
DocumentType	Standard
Pages	18
ProductNote	Reconfirmed 2006
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