Unitech Hand Held Scanner - Manual (Page 15)

Page 14
Output of Wand Emulation: (Appendix D, 3)
Select one of the two choices for the polarity of data output:
* High level for bar (black) and low level for space (white).
* High level for space (white) and low level for bar (black).
Level Duration of Minimum Width: (Appendix D, 3)
Determine the minimum time duration for bar or space either 200 us or
600 us. Longer time means slower movement of the wand scanner.
Polarity of Idle: (Appendix D, 3)
Polarity of idle (without scanning) can be selected either low or high.