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INFORMATION PROCESSING - DATA INTERCHANGE ON 90 MM (3.5 IN.) FLEXIBLE DISK CARTRIDGES USING MODIFIED FREQUENCY MODULATION AT 7958 FTPRAD, 5.3 TPMM (135 TPI) ON BOTH SIDES - PART 1: DIMENSIONAL, PHYSICAL AND MAGNETIC CHARACTERISTICS
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Available format(s): Hardcopy, PDF
Withdrawn date: 24-05-2000
Language(s): English
Published date: 31-05-1991
Publisher: National Standards Authority of Ireland
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.Only cited Standards give presumption of conformance to New Approach Directives/Regulations.Dates of withdrawal of national standards are available from NSAI.
0 Introduction1 Scope and field of application2 Conformance3 References4 Definitions 4.1 recording disk 4.2 hub 4.3 shutter 4.4 liner 4.5 case 4.6 Master Standard Reference Flexible Disk Cartridge 4.7 Secondary Standard Reference Flexible Disk Cartridge 4.8 Typical Field 4.9 Reference Field 4.10 Test Recording Current 4.11 Standard Reference Amplitudes (SRAs) 4.12 Average Signal Amplitude 4.13 in-contact 4.14 side 4.15 direction of rotation 4.16 index 4.17 formatting 4.18 initialization5 General description 5.1 Figures 5.2 Main elements 5.3 Description6 General requirements 6.1 Environment and transportation 6.2 Materials7 Dimensional characteristics 7.1 Case 7.2 Liner 7.3 Disk 7.4 Hub 7.5 Optional handling notches 7.6 Interface between cartridge and drive 7.7 Compliance8 Physical characteristics 8.1 Inflammability 8.2 Coefficient of linear thermal expansion of the disk 8.3 Coefficient of linear hygroscopic expansion of the disk 8.4 Torque9 Magnetic characteristics 9.1 Recording area 9.2 Track geometry 9.3 Functional testingAnnexesA Test for complianceB Measurement of light transmittanceC Method for measuring the effective track widthD Cartridge distortion test gaugeE Method for measuring peak shift
Defines the dimensional, physical and magnetic characteristics of the cartridge, so as to provide physical interchangeability between data processing systems.
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