I've got a fancy EBM DC fan here that spins at around 1000RPM
I'd like to measure this RPM accurately as I've been told is possible from the EBM info.
I just want to make sure my thinking is on the right track to do it.
I need a DMM that can read Frequency (Hertz) but very low Frequency, starting at 10Hz and going up.
Most of the cheap meters I've seen only start measuring at 1MHz, that
is far too high for my readings right?
The only meters starting low I can find are Flukes that start at 10Hz but thy cost a lot! I need a cheaper solution!
I love the EEV videos, but find them hard to search+navigate, too many to go through!
Hope someone can fix my understanding of the EBM spec if I'm wrong!