typically what sort of signal is best for the freq measurement of approx 0 to 100Hz with the adc11 and PLW logging every 1 sec ?
I have been using a signal is conditioned using a 74HCT schmitt trigger with a square wave output with an amplitude of 2.5v with mixed results, I dont know if this was a SW problem way back then as its been a few years but thing's seem to have been more reliable of late and I have been busy with the assembly of a few pcb's to scale and condition the signal down to 2.5v
I was also thinking about using a ncv1124 dual variable-reluctance sensor interface as this also has a sq wave 0-5v output.
what the ideal signal that gives good results ? apart from using a FtoV convertor
appreciate the help