On Thu, May 31, 2018 at 5:38 PM, Gene Heskett <[email protected]> wrote:
> On Thursday 31 May 2018 19:45:24 jeremy youngs wrote: > > > Encoders in hand, shaft turned and mounted, it looks good, 3 more to > > do . encoderawcount.jpg > > <https://drive.google.com/file/d/1oHklBMnxpmTGl-ZzVBCtBkDbsFxwydN_/vie > >w?usp=drivesdk> > > That does look pretty good at first glance. I can't read the clocking > rate though. Humm, I just found the viewer has a zoom. So I assume you > were turning it by hand as the timing shows 2/1 variations on a 10 > millisecond per grid line, so thats pretty slow. What it looks like at 3 > to 5k revs will tell the story. But you are not going to get that > display at 3 to 5k in halscope. That will need a good scope, > Scopes are good, they will let yu find glitches like housing contacts but optical encoders don't have that problem Last night I was using by cheap $8 logic analyzer. Those things are good for the money I could measure the duty cycle of a two 10KHz PWM signals and the A/B channels for two encoders and ...ebay.com/itm/New-USB-Logic-Analyzer-... <https://www.ebay.com/itm/New-USB-Logic-Analyzer-Device-Set-USB-Cable-24MHz-8CH-24MHz-for-ARM-FPGA-M100/222882469206> Yes they make better ones but those cost more than $8 This is one good for signals that change at up to a few MHz. > > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
