Symbologies 12 - 21
UPC-A Preamble
Parameter # 34 (SSI # 22h)
Preamble characters are part of the UPC symbol, and include 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), and transmit no preamble. Select the appropriate option to
match the host system.
No Preamble (<DATA>)
(0)
*System Character
(<SYSTEM CHARACTER> <DATA>)
(1)
System Character & Country Code
(< COUNTRY CODE> <SYSTEM CHARACTER>
<DATA>)
(2)