Wasp Bar Code WLS 8400 FZ 用户手册

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页码 394
Symbologies
8-19
UPC-E1 Preamble
Preamble characters are part of the UPC symbol consisting of Country Code and System 
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. 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>)