Re: Tuning Gecko 320 drivers with a scope....

> 10 or more what? Cycles of some wave? If you are manually making
> moves and recording velocity, you should only get one event.
> You would want the sampling rate of the unit set VERY slow, like
> 100 samples/second, when doing servo tuning. That way, you get
> somewhere around .25 to 1 second filling the screen.

Cycles of a wave, yes. I ended up returning the unit. The fellow was
kind enough to take it back. After reading the instructions over
several times I see that I needed a 2 channel scope, and why. The
other thing is to do it according to the instructions I needed a
pulse generator that I could fine tune the frequency of pulses as
well as give a direction signal that I could switch the direction
back and forth between clockwise and counter-clockwise. I think I
finally figured out Dan's method, so I'll do that for now. Just a
block of aluminum and a bolt to create a flywheel of sorts to impose
an inertial load on the motor with, by hand.

Monte