Motorola LS9203 用户手册
Wand Emulation Interface
8-9
Polarity
Polarity determines how the scanner's wand emulation interface creates the Digitized Barcode Pattern (DBP). DBP is a digital signal
that represents the scanned bar code. Different decoders, to which this device could be attached, are expecting the DBP to be in a
certain format. The DBP either has the “highs” represent bars and the “lows” represent spaces (margins), or the “highs” represent
spaces (margins) and the “lows” represent bars.
that represents the scanned bar code. Different decoders, to which this device could be attached, are expecting the DBP to be in a
certain format. The DBP either has the “highs” represent bars and the “lows” represent spaces (margins), or the “highs” represent
spaces (margins) and the “lows” represent bars.
Scan the appropriate bar code below to select the polarity required by the decoder.
*
Bar High/Margin Low
Bar Low/Margin High