9-Track Tape Density Terminaology Query

From: John Allain <allain_at_panix.com>
Date: Mon May 6 18:15:14 2002

hbp:
> Or flux changes per inch perhaps?

It appears you have it. From Seagate
http://www.seagate.com/support/glossary/terms/fcpi.html

 "Flux changes-per-inch. The linear recording density defined
  as the number of flux changes-per-inch of data track.
  Synonymous with flux reversals-per-inch (FRPI). In MFM
  recording 1 FCPI equals 1 bit per inch (BPI). In RLL encoding
  schemes, 1 FCI generally equals 1.5 BPI. "

John A.
Received on Mon May 06 2002 - 18:15:14 BST