Honeywell International Inc. CS19A 用户手册

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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.

Codabar supports symbol concatenation.  When you enable concatena-
tion, the scanner looks for a Codabar symbol having a “D” start character, 
adjacent to a symbol having a “D” stop character.  In this case the two mes-
sages are concatenated into one with the “D” characters omitted. 

Select Require to prevent the scanner from decoding a single “D” Codabar 
symbol without its companion.  This selection has no effect on Codabar 
symbols without Stop/Start D characters.

A 1 2 3 4 D

D 5 6 7 8 A

Preliminary Draft