I.S. EN 28860-1:1991
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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
Hardcopy , PDF
24-05-2000
English
31-05-1991
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.
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0 Introduction
1 Scope and field of application
2 Conformance
3 References
4 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 initialization
5 General description
5.1 Figures
5.2 Main elements
5.3 Description
6 General requirements
6.1 Environment and transportation
6.2 Materials
7 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 Compliance
8 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 Torque
9 Magnetic characteristics
9.1 Recording area
9.2 Track geometry
9.3 Functional testing
Annexes
A Test for compliance
B Measurement of light transmittance
C Method for measuring the effective track width
D Cartridge distortion test gauge
E 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.
| DocumentType |
Standard
|
| Pages |
36
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Withdrawn
|
| Standards | Relationship |
| EN 28860-1 : 1989 | Identical |
| ISO 683-13:1974 | Heat-treated steels, alloy steels and free-cutting steels Part 13: Wrought stainless steels |
| ISO 9293:1987 | Information processing Volume and file structure of flexible disk cartridges for information interchange |
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