I can recommend the Rigol DS1054Z, which is a 4-channel scope capable of plotting up to 100mhz. If you watch deals you can pick it up for a bit over $300. This instrument has been the single most insightful tool in my hobbyist attempt to learn electronics. It will also decode serial signals.
> On May 6, 2020, at 12:46 PM, John Dammeyer <jo...@autoartisans.com> wrote: > > > >> -----Original Message----- >> From: Dan Henderson [mailto:luvtof...@gmail.com] >> Sent: May-06-20 10:22 AM >> To: Enhanced Machine Controller (EMC) >> Subject: Re: [Emc-users] Fluctuating RPM using CUI ATM 10 encoder >> >> My steppers are set for half stepping and are working well enough just not >> blazingly fast. I�m only pushing 36v to them at the moment. The drivers I >> have are limited to a max of 50v >> >> My main issue is the spindle motor rpm fluctuation. I�m in the process of >> trying a different BOB that doesn�t appear to use isocouplers between it >> and the outputs. It does however use them for the inputs. I�ll post up what >> I find. I�m hoping for better results with this different brand of BOB. > > Try and find someone with a real scope so you can look at the signals. > > I needed to capture RS232 signals and decode them for timing a few years > back. The UART module for my scope is $1200 and I didn't buy it at the time > because I thought I'd never need it. I have CAN bus and SPI/I2C and they are > great. > > But instead of spending $1200 I bought one of these. > > https://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ > > <https://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/> > > If you can find the funds for something like this you won't be disappointed. > With it I was able to discover the sender of the RS232 packets was breaking > up the messages in half with a delay between that caused timeouts. Long > story short I haven't used it since because I have a really nice TEK scope > but it solved a problem and I'd recommend it to anyone. > > For example, it has a waveform generator. You can simulate an encoder with > it. > > John Dammeyer > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net <mailto:Emc-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/emc-users > <https://lists.sourceforge.net/lists/listinfo/emc-users> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
