Checksum Verification - Inateck P7 User Manual

3.4.3 Checksum Verification

Checksum character is not enforced to be included in the data of Code 39. If checksum character
is included, it should be the last character of the barcode data. As a calculate value based on all
of the data, Checksum character is used to check whether the data is correct or not.
If the scanner is set to "Do Not Verify Code 39", which is the default, then the scanner will read all
the Code 39 barcode.
If the scanner is set to "Verify Code 39 with Output Checksum Character", and the scanner will
check the data based on the last character of the barcode data. If the check passes, it will read
and output the Checksum Character as the last character of normal data. However it will not be
able to read Code 39 without checksum character.
If the scanner is set to "Verify Code 39 without Output Checksum Character", and the scanner
will check the data based on the last character of the barcode data. If the check passes, It will
read but will NOT output the Checksum Character as the last character of normal data. However,
it will not be able to read Code 39 without checksum character.
(*) Do Not Verify Code 39
Verify Code 39 without Output Checksum Character
For example, steps to Verify Code 39 with Output Checksum Character:
1. Read the "Enter setup" barcode;
2. Read the "Verify with Output Checksum Character" barcode;
3. Read the "Exit with Save" barcode.
Enter setup
Exit without save
Verify Code 39 with Output Checksum Character
40
Exit with save