On Dec 18, 10:05*pm, Ignoramus7337
wrote:
On 2010-12-19, Jim Wilkins wrote:
...
The trouble that I am concerned with, related to high counts per one
revolution of the encoder, is that encoder or the control may fail to
count them properly and may miss some.

Too *few counts == low accuracy due to large vertical move per count
Too many counts == missing counts from time to time

i

If you use that binary counter IC you could tap off any division you
want, assuming the encoder output isn't quadrature.

Do you have a signal generator? Raise the encoder input frequency
until EMC2 can't follow it. You still might lose counts from CPU
loading at lower speeds, but it will give you an idea of the frequency
response.

jsw