Honeywell Xenon 1900 User Manual page 204

UPC-A Check Digit
This selection allows you to specify whether the check digit should be
transmitted at the end of the scanned data or not. Default = On .
* On
UPC-A Number System
The numeric system digit of a U.P.C. symbol is normally transmitted at the
beginning of the scanned data, but the unit can be programmed so it will
not transmit it. Default = On.
* On
UPC-A Addenda
This selection adds 2 or 5 digits to the end of all scanned UPC-A data.
Default = Off for both 2 Digit and 5 Digit Addenda.
2 Digit Addenda On
5 Digit Addenda On
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Off
Off
* 2 Digit Addenda Off
* 5 Digit Addenda Off