checksum code is the last character of the data. The checksum code is the value
added from all data collected, to check if the data is correct.
After you set the "Code 39 without Checksum" function, the scanner will
recognize all Code 39 normally. The scanner defaults enabling "Code 39 without
Checksum".
After you set the "Enable and Transmit Code 39 Checksum", the scanner will take
the last digit of the Code 39 data output as checksum and transmit it as normal
data collected but won't be able to recognize Code 39 without checksum.
After you set the "Enable but Do not Transmit Code 39 Checksum" function, the
scanner will take the last digit of the Code 39 output as checksum but won't
transmit it. And it won't be able to read Code 39 without checksum.
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