Re: [CAD_CAM_EDM_DRO] as simple as 1,2,3...

"R. T. Robbins" wrote:

> Since you have an index, AND the index with one of the channels, most
> people use channel A, then stick a cheap meter on the output of the and and
> another one on channel A. Damp the encoder shaft with a cloth loop and a
> spring or rubber band. Turn the shaft from one index to the next, counting
> the output of the channel you are looking at. I would spend more time on
> another method if I had a lot to check, but if you only need to do one or
> two, this should work faster.

This works fine with a 250 cycle or less encoder. But, with an encoder of
1000 cycles/rev or more, it would be extremely difficult to do manually. The
only way I could imagine doing it is to connect a beeper (some DVM's have
this built in) to the A channel, mount the encoder in the middle of a sheet of
plywood at least a couple of feet square, and put an arm on the encoder
shaft. then, you could make the fine movements needed to count each
cycle. I HAVE moved 1000 cycle/rev encoders manually, and the individual
cycles are such a tiny movement on the shaft, that any attempt to move
just one cycle makes it move 5 or 10.

Jon