Datalogic Scanning 9500 - Manual (Page 309)

Code 39 Enable
Product Reference Guide
6-193
Code 39 Check Character Calculation
Enables/disables calculation and verification of an optional Code 39 check
character. When disabled, any check character in label is treated as a data
character.
To set this feature:
1. Scan the SWITCH bar code.
2. Scan either the enable or disable bar code below. You’ll need to cover
any unused bar codes on this and the facing page to ensure that the
scanner reads only the bar code you intend to scan.
3. Complete the programming sequence by scanning the SWITCH
bar code.
CODE 39 CHECK CHARACTER CALCULATION = DISABLE
CODE 39 CHECK CHARACTER CALCULATION = ENABLE
NOTE
If check calculation is disabled, the risk is increased that a misread can
occur.
In particular, if you are using variable length stitching, it is important to use
check character calculation to prevent misreads.