ANSI INCITS 181 : 1990 : R2006

Superseded

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RECORDED MAGNETIC TAPE AND CARTRIDGE FOR INFORMATION INTERCHANGE - 112 INCH (12.65 MM), SERIAL SERPENTINE, 22-TRACK, 6667 BPI (262 BPMM), AND 48-TRACK, 10000 BPI (394 BPMM), MFM-ENCODED - REQUIREMENTS FOR RECORDING

Available format(s)

Hardcopy , PDF

Superseded date

04-22-2024

Language(s)

English

Published date

01-01-2006

Publisher

Information Technology Industry Council

1 Scope, Purpose, and Conformance
   1.1 Scope
   1.2 Purpose
   1.3 Conformance
2 Referenced Standards and Publications
   2.1 Referenced American National Standards
   2.2 Other Referenced Standard
   2.3 Referenced Publication
3 Definitions
4 Recording
   4.1 Physical Recording Density
   4.2 Bit-Cell Length
   4.3 Flux Transition Spacing (Peak Shift)
   4.4 Read Signal Amplitude
   4.5 Overwrite
   4.6 Azimuth
5 Format of Track
   5.1 Reference Edge of Tape
   5.2 Calibration Tracks
   5.3 Positions of Track
   5.4 Spacing of Track
   5.5 Width of Track
6 Format of Tape
   6.1 Recording Area
   6.2 Calibration Areas
   6.3 Forward Guard Areas
   6.4 Forward Synchronization Areas
   6.5 Forward Data Areas
   6.6 Reverse Synchronization Areas
   6.7 Reverse Data Areas
   6.8 Reverse Guard Areas
7 Format of Data
   7.1 General
   7.2 Data Bytes
8 Recorded Block Format
   8.1 Relationship to Tracks
   8.2 Gap
   8.3 Structure of a Block
9 Format and Content of Block Structures
   9.1 Preamble
   9.2 Sync
   9.3 Error-Correcting Code (ECC) Control Field
   9.4 Block Control Field
   9.5 Data Field
   9.6 Physical Control Field
   9.7 Cyclical Redundancy Check (CRC)
   9.8 Postamble
   9.9 Block Types
10 Entity
   10.1 Description
   10.2 Rewritten Blocks
Figures

Gives requirements for tape cartridges used for information interchange among information-processing systems, communication systems, and equipment which utilizes a standard code for information interchange which is agreed upon by interchange parties. It deals only with the requirements for recording on magnetic tape.

Committee	X3B5
DocumentType	Standard
Pages	26
ProductNote	Reconfirmed 2006
PublisherName	Information Technology Industry Council
Status	Superseded
SupersededBy	INCITS 181:1990(S2021)
Supersedes	ANSI INCITS 181 : 1990 : R2001

ANSI INCITS 27 : 1987	INFORMATION SYSTEMS - FILE STRUCTURE AND LABELING OF MAGNETIC TAPES FOR INFORMATION INTERCHANGE
ANSI INCITS TR 1 : 1982	DICTIONARY FOR INFORMATION PROCESSING - AMERICAN NATIONAL
IEEE 268-1992	American National Standard for Metric Practice
ISO 370:1975	Toleranced dimensions Conversion from inches into millimetres and vice versa