Sunmi Blink - UPC-A Preamble UPC-A 前导码

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*Transmit UPC-E Check Digit 传输UPC-E校验位
(0x01)
Do Not Transmit UPC-E Check Digit 不传输UPC-E校验位
(0x00)
UPC-A Preamble UPC-A 前导码
Preamble characters (Country Code and System Character) can be transmitted as part of a UPC-A
symbol. Select one of the following options for transmitting UPC-A preamble to the host device: transmit
system character only, transmit system character and country code (“0” for USA), or transmit no preamble.
前导码字符(国家码和系统字符)可作为部分UPC-A码制被传输。选择以下其中一个选项设置并传输UPC-A
前导码给主机：只传输系统字符，传输系统字符和国家码（
“0”为美国），或者传输无前导码。
No Preamble
(<DATA>)
(0x00)
无前导码
*System Character
(<SYSTEM CHARACTER> <DATA>)
(0x01)
系统字符
System Character & Country Code
(< COUNTRY CODE> <SYSTEM CHARACTER> <DATA>)
(0x02)