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UPC-A Preamble

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>)

< System Character >

(<SYSTEM CHARACTE>

<DATA>)

System Character & Country Code

(< COUNTRY CODE> <SYSTEM

CHARACTER> <DATA>)

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EC Line EC-2D Spezifikationen Seite 87