Lexmark T656 Technical Reference Manual page 36

Byte Field name
3 Bar Pitch
4 Tracker Height
5 Ascender,
Descender Offset
6-15 Reserved
Note: The bar code data sent with Singapore Post will consist of either a 6-character or 4-character string.
Invalid characters or lengths will be flagged with an error. String lengths of 4 characters imply a BRS license
number.
Default
Range value
14-18 (hex) 16 (hex)
20-24 (dec) 22 (dec)
66-98 (hex) 7F (hex)
102 -152 (dec) 127 (dec)
A0-D8 (hex) BC (hex)
160-216 (dec) 188 (dec)
One-dimensional bar codes
Description
Sets the number of bars that print per inch
Sets the tracker height in 1/100 mm
Sets the ascender and descender offset in
1/100 mm; the total height of an ascender
or descender will be the sum of this field
and the tracker height
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