Leading Margin (Quiet Zone); Polarity - Motorola LS3408-FZ20005 Product Reference Manual

Leading Margin (Quiet Zone)

Scan a bar code below to select a leading margin duration. A leading margin is the time that precedes the first bar
of the scan, in milliseconds. The minimum allowed value is 80 msec and the maximum is 250 msec. Use this
parameter to accommodate older wand decoders that cannot handle short leading margins.
NOTE 250 msec is the maximum value that this parameter can attain, however, 200 msec is sufficient.

Polarity

Polarity determines how the 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, to which this device can connect,
expect the DBP 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 the decoder requires.
*
80 msec
140 msec
200 msec
*
Bar High/Margin Low
Bar Low/Margin High
Wand Emulation Interface 9 - 5