Checksum Verification - Inateck BCST-20 Instruction Manual

3.6.2 Checksum Verification

It is not enforced to include the checksum character in the Code 39
data. If checksum character is included, it should be the last character
of the barcode data. Checksum character is a calculate value bases
on all of the data, and is used to check if the data is correct or not.
Thus, if the scanner is set to "Do Not Verify" and the scanner will
output all the barcode data.
If the scanner is set to "Verify without Output Checksum Character",
and the scanner will check the data based on the last character of the
barcode data. If the check passes, the scanner will output the data
without the checksum character; if the check doesn't pass, the
scanner will display read failure.
If the scanner is set to "Verify with Output Checksum Character", and
the scanner will check the data based on the last character of the
barcode data. If the check passes, the scanner will output the data
with the checksum character; if the check doesn't pass, the scanner
will display read failure.
(*) Do Not Verify
Verify without Output Checksum Character
Verify with Output Checksum Character
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