UPC-A Preamble (Parameter #34, SSI #22h)
Preamble characters are part of the UPC symbol, and include Country Code and System Character. Select the appropriate option for transmitting a UPC‑A preamble to match the host system:
- Transmit System Character only
- Transmit System Character and Country Code (“0” for USA)
- Transmit no preamble.
Scan one of the following bar codes to set the preamble option for UPC-A. By default, this parameter is set to System Character.