ANSI INCITS 136 : 1986

1 Scope and Purpose
  1.1 Scope
  1.2 Purpose
2 Referenced and Related Standards
  2.1 American National Standards
  2.2 Other Standards
  2.3 Related American National Standard
3 Definitions
4 Recording
  4.1 Method
  4.2 Code
  4.3 Density of Recording
  4.4 Measurement of Signal Amplitude
  4.5 Signal Amplitude
  4.6 Erasure
  4.7 Azimuth
5 Tracks
  5.1 Number of Tracks
  5.2 Use of Tracks
  5.3 Reference Plane
  5.4 Track Centerline Locations
  5.5 Track Width
6 Recorded Block
  6.1 Preamble
  6.2 Data Block Marker
  6.3 Data Block
  6.4 Block Address
  6.5 Cyclical Redundancy Check
  6.6 Postamble
7 File Mark Block
8 Control Block
  8.1 Data Field
  8.2 Use of Control Blocks
9 Rewritten Blocks
  9.1 Error
  9.2 Streaming Termination
  9.3 Forced Streaming
  9.4 End of Recorded Data

Gives a format and recording standard for an 8000-bpi (315-bpmm) streaming 0.250-inch (6 3-mm)-wide, 4- and 9-track, magnetic tape in a cartridge to be used for information interchange between information processing systems, communication systems, and associated equipment utilizing a standard code for information interchange, as agreed upon by the interchange parties.