Operator’s Guide Appendix A
002-5564 RJS, Minneapolis, MN
151 - 200% = .38X
UPC-A symbols with a number system character value of 2 and
EAN-13 symbols with a prefix of 20 contain a random weight check
digit in addition to the normal Mod 10 check digit. This extra digit is
automatically analyzed and displayed in the Mod Check Data
Analysis screen as shown below:
Modck: 1 5 PASS
Expect: 1 5
The 1 is the random weight check digit and the 5 is the
Mod 10 check digit. The symbology specifications allow
the check digit to have a value of zero in cases where it
is not used
In cases where the random weight check digit is zero,
when another value is expected, a Bad Mod Check
Warning will not be issued. The LCD display and
corresponding printout will note the discrepancy with a
“CHK” message in place of “FAIL” as shown below:
Modck: 1 5 PASS
Expect: 1 5
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