Your best bet is to d/l the new manual (p.17) and check it out there. suffice to say you can monitor ANYTHING- RPM, % change, Vf, etc.
it's a bit quirky. Again, d/l the manual (p.23) and the software and play w/it.
Don’t know offhand, IIRC it’s every 1k RPM.
No idea. It is RPM and...