I'll agree with Andy here. I have a dual trace older digital scope and a 4 trace digital that can even decode CAN, SPI and I2C messaging. I bought a small Digilant PC development kit version for $400 or so to get UART decoding for a PAN-TILT system that was misbehaving. The add on module for the scope to do that was $1200 so a no brainer. Haven't used it since we solved the serial port issues 3 years ago.
But my 4 trace I use all the time. The 2 trace has spent time out in the shop by the mill but was useless for determining what the issue was with the out of spec DC servo that only lost steps in one direction and never the other. The G-54 zero crept in one direction resulting in the center drill peck holes being in one place and then a bit later the drill bit for those holes not lining up. In a noisy shop environment just getting the scope to see real data as opposed to the noise it picks up may be impossible. I saw that at a Siemen's plant in Regensberg Germany back in the early 90's. We scoped a CAN bus and could barely see the signal on the differential pair yet the system operated flawlessly. Just couldn't find the right ground or whatever... So the money spent on a scope may not be worth anything. John > -----Original Message----- > From: andy pugh [mailto:[email protected]] > Sent: October-13-21 3:22 AM > To: [email protected]; Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Fwd: Rogue Index Pulses > > On Wed, 13 Oct 2021 at 11:13, Peter Hodgson <[email protected]> > wrote: > > > I'm watching a couple of Oscilloscopes on eBay so might take the plunge. > > I am going to go against the consensus and suggest that if you don't > already have an oscilloscope, and don't know how to use one, then you > might not find it much help. > > I certainly got nowhere trying to use one to track down false > triggering of limit switches. And I have owned a 'scope for decades > (though not used it more than a few times a year) > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > � George Fitch, Atlanta Constitution Newspaper, 1912 > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
