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UPC-E1 Preamble
Preamble characters are part of the UPC bar code consisting of Country Code and Sys-
tem Character. Three options are given for transmitting UPC-E1 preamble to the host
device: transmit System Character only, transmit System Character and Country Code
(“0” for USA), and no preamble transmitted. Scan a bar code below to match the host
system.
No Preamble
(<DATA>)
*System Character
(<SYSTEM CHARACTER> <DATA>)
System Character & Country Code
(< COUNTRY CODE> <SYSTEM CHARACTER> <DA-
TA>)