Motorola DS3478 Benutzerhandbuch

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Symbologies 13 - 15
UPC-A Preamble
Preamble characters are part of the UPC symbol consisting of Country Code and System Character. There are 
three options for transmitting a UPC-A preamble to the host device: 
Transmit System Character only.
Transmit System Character and Country Code (“0” for USA).
Transmit no preamble.
Select the appropriate option to match the host system.
No Preamble 
(<DATA>)
*
System Character
(<SYSTEM CHARACTER> <DATA>)
System Character & Country Code
(< COUNTRY CODE> <SYSTEM CHARACTER> 
<DATA>)