EN 28860-1 : 1989
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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
10-01-1989
01-12-2013
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
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