ANSI INCITS 181 : 1990 : R2001

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.