16 квітня 2012 р. 13:41 gene heskett <ghesk...@wdtv.com> написав:
> Looks like it is but those slow rise & fall times (looks to be slew rate > limited), coupled with the non-50% duty cycle, could be problematic. > > Who made that encoder? > Gene as far as I understand you can't measure too much with 1kHz sampling rate (that's what we have with HAL scope) Encoders are absolutely OK, I tested them on the other machine, and just tested again with 7i48. But 7i48 has muxed encoders and I can't see much with HAL scope anyways. 16 квітня 2012 р. 13:58 andy pugh <bodge...@gmail.com> написав: I think counter-mode only counts up, and only looks at one channel. Yes, it just counts any pulses of A channel. I think you might need to move the encoder more slowly, as you only > have a 1mS sample rate available. > It almost looks like there is no actual quadrature offset in the channels. > I tried that, but no quadrature pulses appear. I'm afraid that this is 7i39 spoils the quadrature signal. Does it make sense to connect the encoder right to 7i43 pins and look? Though it works with 7i48, who knows... I might try that. And if the pulses are correct, it means something wrong with 7i39 or my specific encoder cable to 7i39. But I checked it all possible ways... And 5V on pin 6 confirms that I use the correct pinout. So I'm just stuck. Andrew ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
