Quote Originally Posted by Acetronics View Post
Hi,

A look at the datasheet shows A.2 is a schmitt trigger input ... not so good for such measurements.
Measurement differences with other ports come from here ...

Alain
oh, missed that.

Thank you so much; fortunately I do have a spare pin I could use.

I still dont understand why the pulsin should not be 10ms (50 Hz, positive half cycle) or *less*, rather than the roughly 17 ms that I'm getting?

Regards,

Anand