Quote:
Originally Posted by bobson
I thought it would be alternating the voltage between A and B channels as it turns?
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No they alternate in the middle so there is 4 different levels. Quadrature works on level change not level it self, so if you are getting level change then they are working.
00 A and B are low next B will change
01 to produce this,
11 and so on
01
The above is called gray code typically for this type of application allow only 1 level change at any time.