Polarity; Ignore Unknown Characters - Symbol DS 3478 Product Reference Manual

10-8 DS 3478 Product Reference Guide

Polarity

Polarity determines how the digital scanner's wand emulation interface creates the Digitized Bar code Pattern (DBP). DBP is a digital
signal that represents the scanned bar code. Different decoders expect the DBP to be in a certain format. The DBP either uses "highs"
to represent bars and "lows" to represent spaces (margins), or "highs" to represent spaces (margins) and "lows" to represent bars.
Scan the appropriate bar code to select the polarity required by the decoder.
*
Bar High/Margin Low
Bar Low/Margin High

Ignore Unknown Characters

Unknown characters are characters the host does not recognize. When Send Bar Codes With Unknown Characters is selected,
all bar code data is sent except for unknown characters, and no error beeps sound on the digital scanner. When Do Not Send Bar
Codes With Unknown Characters is selected, bar codes containing at least one unknown character are not sent to the host, and
an error beep sounds on the digital scanner.
*
Send Bar Codes With Unknown Characters
(Enable)
Do Not Send Bar Codes With Unknown Characters
(Disable)