PSC DUET Programming Kit page 236

Code 39: Check Character — Verify
Use this bar code to enable
calculation and verification of the
optional Code 39 check character.
(The check character will not be
sent to the host unless you also
enable Code 39: Check Character —
Send). This feature checks to see if
data collected matches the bar
code's internal check character.
6 4 0 0 0 8 5 0 0 0 0 1 0
232
Duet™ and VS800™ Scanner Programming Kit