AS 2747.1-1985

1 - AS 2747.1-1985 INFORMATION PROCESSING-DATA INTERCHANGE ON 200 mm FLEXIBLE DISK CARTRIDGES USING TWO-FREQUENCY RECORDING...
4 - PREFACE
6 - 0 Introduction
6 - 1 Scope and field of application
6 - 2 References
6 - 3 Definitions
6 - 3.1 flexible disk:
6 - 3.2 reference flexible disk cartridge:
6 - 3.3 secondary reference flexible disk cartridge:
6 - 3.4 signal amplitude reference flexible disk cartridge:
6 - 3.5 typical field:
6 - 3.6 reference field:
7 - 3.7 test recording currents:
7 - 3.8 standard reference amplitudes:
7 - 3.9 average signal amplitude:
7 - 3.10 in contact:
7 - 3.11 formatting:
7 - 3.12 initialization:
7 - 3.13 recording area:
7 - 4 General description
7 - 4.1 General figures
7 - 4.2 Main elements
7 - 4.3 Description
7 - 4.4 Optional features
7 - 5 General requirements
7 - 5.1 Environment and transport
7 - 5.1.1 Testing environment
7 - 5.1.2 Operating environment
8 - 5.1.3 Storage environment
8 - 5.1.4 Transportation
8 - 5.1.5 Handling
8 - 5.2 Materials
8 - 5.2.1 Jacket
8 - 5.2.2 Liner
8 - 5.2.3 Disk
8 - 5.2.4 Envelope
8 - 5.3 Direction of rotation
8 - 6 Dimensional characteristics
8 - 6.1 Jacket
8 - 6.1.1 Form
8 - 6.1.2 Thickness
9 - 6.1.3 Central windows
9 - 6.1.4 Index windows
9 - 6.1.5 Head windows
9 - 6.1.6 Reference edge profile
9 - 6.1.7 Construction of the jacket
9 - 6.1.8 Notches
9 - 6.2 Liner
9 - 6.3 Disk
9 - 6.3.1 Diameters
9 - 6.3.2 Thickness
10 - 6.3.3 Index hole
10 - 6.3.4 Recording area
10 - 6.3.5 Sides
10 - 7 Physical characteristics
10 - 7.1 Inflammability
10 - 7.2 Coefficient of linear thermal expansion of the disk
10 - 7.3 Coefficient of linear hygroscopic expansion of the disk
10 - 7.4 Opacity
10 - 7.4.1 Opacity of the jacket
10 - 7.4.2 Opacity of the disk
10 - 7.5 Torque
10 - 7.5.1 Starting torque
10 - 7.5.2 Running torque
10 - 8 Magnetic characteristics
10 - 8.1 Track geometry
10 - 8.1.1 Number of tracks
10 - 8.1.2 Width of tracks
10 - 8.1.3 Tracks locations
11 - 8.1.4 Track number
11 - 8.1.5 Index
11 - 8.2 Functional testing
11 - 8.2.1 Surface tests
11 - 8.2.2 Track quality test
12 - 8.2.3 Rejection criteria
16 - Annex A - Measurement of the cartridge thickness
16 - A.1 Maximum thickness
16 - A.2 Minimum thickness
16 - A.3 Thickness of the flaps (if any)
18 - Annex B - Measurement of light transmittance
18 - B.0 Introduction
18 - B.1 Description of the measuring equipment
18 - B.1.1 Radiation source
18 - B.1.2 Radiation receiver
18 - B.1.3 Optical path (see figure 12)
18 - B.1.4 Measuring circuitry
19 - B.2 Measuring method
19 - B.2.1 Measurement of the disk
19 - B.2.2 Measurement of the jacket
20 - Annex C - Method for measuring the effective track width
21 - Annex D - Write-inhibit notch
21 - D.1 Data interchange
21 - D.2 Other applications

Specifies the dimensional, physical and magnetic characteristics of the cartridge, so as to provide physical interchangeability between processing systems. Identical with ISO 5654-1.

This part of ISO 5654 specifies the dimensional, physical and magnetic characteristics of the cartridge, so as to provide physical interchangeability between data processing systems.NOTE- Numeric values in the SI and/or Imperial measurements system in this International Standard may have been rounded and therefore are consistent with, but not exactly equal to, each other. Either system may be used, but the two should be neither intermixed nor reconverted. The original design was made using the Imperial measurement system.