Argox AS-9500 - Manual (Page 139)

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example #8 , enable the OCR-A font. Scan the Enter OCR Check
Character bar code, then scan the following hex values in order:
3031323334353637383958
After you enter all the desired hex values, scan the Save bar code
on the inside back cover of this manual.
Weighting Options
By default, the check character computation is unweighted. It is
possible to use one of two weighted modulo 10 schemes.
Weighting is often used to detect if two neighboring characters are
transposed, a common error when an operator keys in data.
Weighted Modulo 10 Check Character
Starting with the check character and working backward through
the message, the imager applies a multiplier of 1, then 3, then 1,
then 3, and so on. This is the checking scheme used in many
EAN•UCC symbologies, including U.P.C. and Interleaved 2 of 5
(when a check digit is invoked). To apply this weighting scheme,
set the OCR check character to “0123456789x3x1” or scan the
following symbol:
Example: Scan the Weighted Modulo 10 Check Character symbol.
Also enter the OCR template: dddddddc
Then scan the string below: