Rice Lake Motorola DS457 Laser Scanner - Manual (Page 240)

12 - 18 DS457 Fixed Mount Imager Integration Guide
UPC-A Preamble
Parameter # 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>)
(00h)
*
System Character (<SYSTEM CHARACTER>
<DATA>)
(01h)
System Character & Country Code
(< COUNTRY CODE> <SYSTEM CHARACTER>
<DATA>)
(02h)