AS 3606.2-1988

1 - AS 3606.2-1988 INFORMATION PROCESSING DATA INTERCHANGE ON 6.30 mm MAGNETIC TAPE CARTRIDEGE USING GCR RECORDING AT 394 ftpmm,
4 - PREFACE
5 - Contents
7 - 1 Scope and field of application
7 - 2 Conformance
7 - 3 References
7 - 4 Hexadecimal notation
8 - 5 Reference plane
8 - 6 Track geometry
8 - 6.1 Track location
8 - 6.2 Number of tracks
8 - 6.2.1 4-track format
8 - 6.2.2 9-track format
8 - 6.3 Track width
8 - 7 Recording
8 - 7.1 Method of recording
8 - 7.2 Physical recording densities
8 - 7.3 Average bit cell length variations
8 - 7.3.1 Average bit cell length
8 - 7.3.2 Long-term average bit cell length
8 - 7.3.3 Short-term average bit cell length
8 - 7.4 Fl ux transition spacing
8 - 7.4.1 Instantaneous flux transition spacing
8 - 7.4.2 Rate of change of average flux transition spacing
11 - 7.5 Signal ampl itude of a recorded cartridge for data interchange
11 - 7.5.1 Average signal amplitude at nominal maximum density
11 - 7.5.2 Minimum signal amplitude
11 - 7.5.3 Maximum signal amplitude
11 - 8 Erasure
11 - 9 Recording offset angle
11 - 10 Use of tracks
11 - 10.1 4-track format
11 - 10.2 9-track format
12 - 10.3 Summary of requirements for use of use of tracks and Reference Burst
12 - 11 Coded representation of the data
12 - 11.1 General
12 - 11.2 Coding methods
13 - 12 Recording of coded characters on the tape
14 - 13 Track format
14 - 13.1 Data Block
14 - 13.1.1 Preamble
14 - 13.1.2 Block Marker
14 - 13.1.3 Data
14 - 13.1.4 Block Address
14 - 13.1.5 CRC (Cyclic Redundancy Check)
15 - 13.1.6 Postamble
15 - 13.2 File Mark Block
15 - 13.3 Control Blocks
15 - 13.4 Use of Control Blocks
15 - 13.4.1 Track 0
15 - 13.4.2 Further uses of Control Blocks
16 - 14 End of recorded data
16 - 15 Re-writing operations
16 - 15.1 Re-writing rules
16 - 15.2 Rejection criterion
16 - 16 Updating operations
16 - 17 Reading operations
17 - Annex - Example of writing operations