User`s manual

“Raw” hexadecimal data, when encoded, requires
the following elements in the final binary data
string:
·
Preamble data - minimum number of leading
binary “0” bits, i.e. NUL characters. Note: the
NUL (00 hexadecimal) is normally sent to the
printer with a character like the @ symbol (40
hexadecimal) and is encoded as all zero bits in 6
(or lower) bit data mode.
75bpi - 20 min., 24 nominal, 1024 max.
210bpi - 40 min., 68 nominal, 1024 max.
·
Start Bit - The first binary “1” bit detected will
start the data block grouping. The LSB (least sig
-
nificant bit) of the first character sited in data
block is the Start Bit.
·
NUL Data Block - Without NULs enabled, the
encoder terminates the data string or causes the
data string to “restart” when a new “start bit”, a
data block with a “1’s” bit.
·
NUL Data Block with NULs enabled - Allow
the inclusion of NUL data character blocks
within the data string.
·
Postamble - binary “0” bits, i.e. NUL charac-
ters, fill remainder of track.
C-8 980081-001 Rev. F