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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.