At 09:34 PM 8/12/2010 Thursday, Lucas Thompson wrote:
>I'd be interested to throw together a voltage to frequency converter
>to test the AFM's response. Listening to a variable audio tone is a
>great way to test that sort intermittent thing. Probably wouldn't take
>too long.

Yah, my Hickock DVM has an audio output that tracks the input in real
time, from a low ticking for a zero reading to a squeal for
overflow.  It's absolutely the cat's pajamas, and since it's tied to
whatever conditioned input is driving the integrator it's just a
matter of pushing the button or not.

Yours,
David