Datalogic POWERSCAN 7000 2D Imager Product Reference Manual page 72

Symbologies
When Check Character is set to Validate, but Don't Transmit, the unit
will only read Codabar bar codes printed with a check character, but will
not transmit the check character with the scanned data.
* No Check Character
Validate Modulo 16
and Transmit
Codabar Concatenation
Codabar supports symbol concatenation. When you enable concatena-
tion, the imager looks for a Codabar symbol having a "D" start character,
adjacent to a symbol having a "D" stop character. In this case the two
messages are concatenated into one with the "D" characters omitted.
Default = On.
Character
Codabar
Select Require to prevent the imager from decoding a single "D" Coda-
bar symbol without its companion. This selection has no effect on Cod-
abar symbols without Stop/Start D characters.
On
Require
6-4
Start Stop Start Stop
A12D D34A
PowerScan
Validate Modulo 16, but
Don't Transmit
* Off
®
7000 2D