INCITS/ISO/IEC 10994 : 1992

Section 1 - General
1 Scope
2 Conformance
3 Normative references
4 Definitions
   4.1 Average Signal Amplitude
   4.2 case
   4.3 direction of rotation
   4.4 disk
   4.5 eraseability
   4.6 formatting
   4.7 hub
   4.8 in-contact
   4.9 Index
   4.10 initialization
   4.11 line of access
   4.12 liner
   4.13 Master Standard Reference Flexible Disk Cartridge
   4.14 Reference Erase Field
   4.15 Reference Field
   4.16 Secondary Standard Reference Flexible Disk Cartridge
   4.17 shutter
   4.18 Side
   4.19 Standard Reference Amplitude
   4.20 Test Erase Current
   4.21 Test Recording Current
   4.22 Typical Field
5 General description
   5.1 Drawings
   5.2 Main elements
   5.3 Description
Section 2 - Environments, mechanical and physical characteristics
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 Flammability
   8.2 Coefficient of linear thermal expansion of the disk
   8.3 Coefficient of linear hygroscopic expansion of the disk
   8.4 Torque
Section 3 - Unrecorded flexible disk cartridge
9 Magnetic characteristics
   9.1 Recording area
   9.2 Track geometry
   9.3 Functional testing
Section 4 - Recording method and track format
10 General requirements
   10.1 Mode of recording
   10.2 Track location tolerance of the recorded flexible disk
         cartridge
   10.3 Recording offset angle
   10.4 Density of recording
   10.5 Flux transition spacing
   10.6 Average Signal Amplitude
   10.7 Byte
   10.8 Sector
   10.9 Cylinder
   10.10 Cylinder number
   10.11 Data capacity of a track
   10.12 Hexadecimal notation
   10.13 Error Detection Characters (EDC)
11 Track layout
   11.1 Index Gap
   11.2 Sector Identifier
   11.3 Identifier Gap
   11.4 Data Block
   11.5 Data Block Gap
   11.6 Track Gap
12 Coded representation of data
   12.1 Byte coding
   12.2 Bit coding
Annexes
Annex A (normative) Test for compliance
Annex B (normative) Measurement of light transmittance
Annex C (normative) Method for measuring the effective track width
Annex D (normative) Procedure and equipment for measuring flux
        transition spacing
Annex E (informative) Data separators for decoding MFM recording
Annex F (informative) EDC implementation
Annex G (normative) Cartridge distortion test gauge
Annex H (normative) Method for measuring peak shift
Annex J (normative) Head and read amplifier for functional testing
Annex K (normative) Procedure for determining test recording current
        and test erase current

Describes the characteristics of 90 mm flexible disk cartridges recorded at 31831 ftprad using modified frequency modulation recording, on 80 tracks on each side.