Datamax Prodigy Operator's Manual page 134

H: Identifies the HIBC (modulo 43 checksum) version of the code
3 of 9 bar code. The checksum will be placed at the end of the
data string that is received from the host. The host device must
supply the leading "+"s to identify the data format type. Code
39 is an uppercase, alphanumeric bar code that is variable in
length. The valid ASCII characters for this font are: 32, 36-39,
42-43, 45-47, 48-57, 65-90. Code 3 of 9's normal wide to
narrow bar ratio is 3:1.
203 DPI Printer
I: Identifies the 20-character CODABAR bar code. CODABAR is
basically a numeric bar code with some special additional
characters. These characters are "0123456789ABCD$+-./:"
excluding the " characters. The length of the code is variable
and is normally printed with a 3:1 ratio. CODABAR needs a
start and stop character.
203 DPI Printer
Page - D18
152 DPI Printer
152 DPI Printer
Appendix D