Motorola LS7708 ユーザーズマニュアル

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Symbologies
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UPC-A Preamble (continued)
System Character & Country Code
(< COUNTRY CODE> <SYSTEM CHARACTER> <DATA>)
UPC-E Preamble
Preamble characters are part of the UPC symbol consisting of Country Code and System Character. Three options are given for 
transmitting UPC-E preamble to the host device: transmit System Character only, transmit System Character and Country Code (“0” 
for USA), and no preamble transmitted. Select the appropriate option to match the host system.
No Preamble 
(<DATA>)