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Symbol PL4507 Decoder Integration Guide
USB Ignore Unknown Characters
This option applies only to the HID Keyboard Emulation device and IBM device. Unknown characters are
characters the host does not recognize. Select Send Bar Codes With Unknown Characters to send all bar code
data except for unknown characters. No error beeps sound. When Do Not Send Bar Codes With Unknown
Characters is selected, for IBM devices, bar codes containing at least one unknown character are not sent to the
host, and an error beep sounds. For HID Keyboard Emulation devices, the bar code characters up to the unknown
character are sent, and an error beep sounds.
*Send Bar Codes with Unknown Characters
(Transmit)
Emulate Keypad
Enable this to send all characters as ASCII sequences over the numeric keypad. For example ASCII A is sent as
"ALT make" 0 6 5 "ALT Break". This allows support for other country variants.
*Disable Keypad Emulation
Do Not Send Bar Codes with Unknown Characters
(Disable)
Enable Keypad Emulation
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