> > "You can also "sanity-check" your data, knowing that the engine can't
> > instantly change its speed by a large amount."
> >
> > Maybe this engine cannot, but others can.
>=20
> If you are looking at the period between consecutive spark events, then
you
> shouldn't see a dramatic delta even in very high revving/low inertia
engines
> i.e. the engine isn't going to halve or double it's speed between one
spark
> and the next.

40=B0 degree difference are not nothing, but even not half or double speed.
But if you ignore 40=B0 difference, you do not need to think about 10, 12 o=
r
14 bit resolution of a counter ...

Best Jens


--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.