ECMA 100 : 2ED 88

1 SCOPE, FIELD OF APPLICATION AND CONFORMANCE
   1.1 Scope and Field of Application
   1.2 Conformance
2 REFERENCES
3 GENERAL DESCRIPTION
   3.1 Drawing
   3.2 Main Elements
   3.3 Description
4 DEFINITIONS
   4.1 Recording
   4.2 Hub
   4.3 Shutter
   4.4 Liner
   4.5 Case
   4.6 Master Standard References 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 Amplitude
   4.12 Average Signal Amplitude
   4.13 In-Contact
   4.14 Side
   4.15 Direction of Rotation
   4.16 Index
   4.17 Line of Access
   4.18 Formatting
   4.19 Initialization
5 GENERAL REQUIREMENTS
   5.1 Environment and Transportation
   5.2 Materials
6 DIMENSIONAL CHARACTERISTICS
   6.1 Case
   6.2 Liner
   6.3 Disk (Fig. 4)
   6.4 Hub (Fig. 4)
   6.5 Optional Handling Notches (Fig. 1 and 2)
   6.6 Interface between Cartridge and Drive
   6.7 Compliance
7 PHYSICAL CHARACTERISTICS
   7.1 Inflammability
   7.2 Coefficient of Linear Thermal Expansion of the Disk
   7.3 Coefficient of Linear Hygroscopic expansion of the Disk
   7.4 Torque
8 MAGNETIC CHARACTERISTICS
   8.1 Recording Area
   8.2 Track Geometry
   8.3 Functional Testing
9 GENERAL REQUIREMENTS
   9.1 Mode of Recording
   9.2 Track Location Tolerance of the Recorded Flexible Disk
        cartridge
   9.3 Recording Offset Angle
   9.4 Density of Recording
   9.5 Flux Transition Spacing
   9.6 Average Signal Amplitude
   9.7 Byte
   9.8 Sector
   9.9 Cylinder
   9.10 Cylinder Number
   9.11 Data capacity of a Track
   9.12 Hexadecimal Notation
   9.13 Error Detection Characters (EDC)
10 TRACK LAYOUT
   10.1 Index Gap
   10.2 Sector Identifier
   10.3 Identifier Gap
   10.4 Data Block
   10.5 Data Block gap
   10.6 Track Gap
11 CODED REPRESENTATION OF DATA
   11.1 Standards
   11.2 Coding Methods
APPENDIX A - TEST FOR COMPLIANCE
APPENDIX B - MEASUREMENT OF LIGHT TRANSMITTANCE
APPENDIX C - METHOD FOR MEASURING THE EFFECTIVE TRACK WIDTH
APPENDIX D - PROCEDURE AND EQUIPMENT FOR MEASURING FLUX
             TRANSITION SPACING
APPENDIX E - DATA SEPARATORS FOR DECODING MFM RECORDING
APPENDIX F - EDC IMPLEMENTATION
APPENDIX G - CARTRIDGE DISTORTION TEST GAUGE
APPENDIX H - METHOD FOR MEASURING PEAK SHIFT
APPENDIX J - METHOD FOR MEASURING OVERWRITE

Specifies the characteristics of 90 mm flexible disk cartridges recorded at 7 958 ftprad using modified frequency modulation recording, on 80 tracks on each side - ISO Type 301.