I used this video to measure my stepper drivers. This guy talks a lot so skip to about 8m 50s and he shows you how he measures the potentiometers.
As for how much Volts you should set it to, check out this answer.
I used this video to measure my stepper drivers. This guy talks a lot so skip to about 8m 50s and he shows you how he measures the potentiometers.
As for how much Volts you should set it to, check out this answer.