Peter Feucht wrote: > > I know. > ..... > Max. frequency under stress conditions can be assumed with 210/Minute =3D > about 3,5Hz. > > All this for humans. > Max. frequency under medicine can be higher, even without stress conditions, I know. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .