AS 2847.2-1988

1 - AS 2847.2-1988 INFORMATION PROCESSING - DATA INTERCHANGE ON 130 MM (5.25 IN) FLEXIBLE DISK CARTRIDGES USING TWO-FREQUENCY REC
4 - PREFACE
5 - Contents
6 - 0 Introduction
6 - 1 Scope and field of application
6 - 2 Conformance
6 - 3 References
6 - 4 General requirements
6 - 4.1 Mode of recording
6 - 4.2 Track location tolerance of the recorded flexible disk cartridge
6 - 4.3 Recording offset angle
6 - 4.4 Density of recording
7 - 4.5 Flux transition spacing
7 - 4.6 Average signal amplitude
7 - 4.7 Byte
7 - 4.8 Sector
7 - 4.9 Data capacity of a track
7 - 4.10 Hexadecimal notation
7 - 4.11 Error detection characters (EDC)
8 - 5 Track layout after the first formatting for track 00
8 - 5.1 Index gap
8 - 5.2 Sector identifier
8 - 5.3 Identifier gap
8 - 5.4 Data block
9 - 5.5 Data block gap
9 - 5.6 Track gap
9 - 6 Track layout after the first formatting for tracks 01- 34
9 - 6.1 Index gap
9 - 6.2 Sector identifier
9 - 6.3 Identifier gap
10 - 6.4 Data block
10 - 6.5 Data block gap
10 - 6.6 Track gap
10 - 7 Track layout of a recorded flexible disk for data interchange
10 - 7.1 Representation of characters
10 - 7.2 Good and bad tracks
10 - 7.3 Track layout of good tracks
11 - 7.4 Layout of a bad track
11 - 7.4.1 Contents of the fields
12 - 7.4.2 Requirements for tracks
13 - Annex A - Use of additional tracks
14 - Annex B - EDC implementation
15 - Annex C - Procedure and equipment for measuring flux transition spacing
15 - C.1 General
15 - C.2 Format
15 - C.3 Test equipment
16 - C.4 Procedure for measurement

Specifies the magnetic characteristics, the track layout, and a track format to be used on a 130 mm flexible disk cartridge, recorded at 7958 ftprad on one side. This Standard is identical with ISO 6596-2:1985.

This part of ISO 6596 specifies the magnetic characteristics, the track layout, and a track format to be used on a 130 mm (5.25 in) flexible disk cartridge, recorded at 7 958 ftprad on one side using two-frequency recording at a track density of 1,9 tracks per millimetre (tpmm) [48 tracks per inch (tpi)], which is intended for data interchange between data processing systems.NOTE - Numeric values in the SI and/or Imperial measurement system in this International Standard may have been rounded off 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 re-converted. The original design for this part of ISO 6596 was made using SI units.