ANSI INCITS 174 : 1989
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
INFORMATION SYSTEMS - RECORDED MAGNETIC TAPE & CARTRIDGE FOR INFORMATION INTERCHANGE, 20-TRACK, SERIAL, 1/2 INCH (12.65mm), 12000 bpi (472 bpmm), MFM-ENCODED - REQUIREMENTS FOR RECORDING
23-07-2013
12-01-2013
1 Scope, purpose, conformance
1.1 Scope
1.2 Purpose
1.3 Conformance
2 Referenced and related standards and other
publications
2.1 Referenced American National Standards
2.2 Other referenced standards
2.3 Referenced publication
2.4 Related standard
3 Definitions
4 Recording
4.1 Method of recording
4.2 Measurements
4.3 Density of recording
4.4 Flux-transition spacing
4.5 Signal amplitude
4.6 Erase function
4.7 Azimuth
5 Format
5.1 Number and numbering of tracks
5.2 Use of tracks
5.3 Byte and code requirements
5.4 Gaps
5.5 Tape format
5.6 Block formats
5.7 User-data subblock format
5.8 Header field descriptions
5.9 Data-filling for dual channel
5.10 Error-correction format for dual channel
6 Write-error recovery methods
6.1 Start/stop-format write-error recovery
6.2 Streaming-format write-error recovery
7 Data underrun
8 Termination of recording
Figures
1 Recorded patterns of flux transition
2 Average assymetry
3 Transition-to-transition spacing deviations
4 Track format
5 Format for file mark and end of data blocks
6 Field of header type FE16
7 Format for blocks containing user data subblocks
8 Subblock format for user data
9 Header type F816
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