@ Jay, Ha, yeah.. I've seen a number of his vids.. Don't mean to offend, but he comes off a bit squirrely (hyper) for me.
Yet another freaking Aussie nutcase, lol - but he does seem to get some good info across, in between the audible glamour. On Mon, Aug 17, 2015 at 9:54 PM, Jay Jaeger <cu...@charter.net> wrote: > You might check EEVBLOG on Youtube. The guy's a blast and covers what > you are asking about. He indicates 8 bits is really not to his liking > at all, to go for more. He also goes over the sampling rate of some of > the USB DSO's out there. > > EEVBlog #13: > > https://www.youtube.com/watch?v=JTG6jWL0ZqA > https://www.youtube.com/watch?v=Ev121xAt_k4 > > JRJ > > On 8/17/2015 6:15 PM, drlegendre . wrote: > > Hey Dave & All, > > > > Could you give a little quick kick-start guide to bit depth & sampling > rate > > on DSOs? It's always kind of stumped me, not that I've ever read deeply > > into it.. but how is it that you can get any kind of (vertical, right?) > > resolution out of 8 or even 12-bit samples? > > > > Example line of thought - 8 bit sample = 256 possible vertical positions. > > Even if the screen is low-end (640 x 480) that's almost 2X more height in > > pixels than samples in an 8-bit sample. So each increment is like 2 > pixels > > tall and seems like it would be awfully blocky and imprecise. Things > would > > seem to get even worse if you try to do maths functions.. > > > > I must be viewing this quite wrong? > > > > On Mon, Aug 17, 2015 at 3:55 PM, Dave G4UGM <dave.g4...@gmail.com> > wrote: > > > >> > >> > >>> -----Original Message----- > >>> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel > >>> Chiappa > >>> Sent: 17 August 2015 21:12 > >>> To: cctalk@classiccmp.org > >>> Cc: j...@mercury.lcs.mit.edu > >>> Subject: Re: test equipment / Re: Z80 / Z84C Swap (Doh!) > >>> > >>> > From: Eric Smith > >>> > >>> > If a person has any reasonable business justification > >>> > >>> But a lot of the people here don't; they're purely hobbyists. So > spending > >> $1K > >>> on a piece of test equipment just isn't realistic for them. > >>> > >>> Having said that, I do see some DSO's on eBay for not much money (e.g. > >> the > >>> little hand-held ones), and those might be a good alternative to a > logic > >>> analyzer - I never used one, so I tend not to think of them. > >>> > >>> Noel > >> > >> > >> I haven't tried the dedicated DSO's but I have a couple of USB connected > >> ones and a laptop. For value for money I don't think the Hantek 6022 > can > >> be > >> beaten. It really only goes to 8Mhz but I see they can be had for $60 - > $70 > >> and some sellers have US stock. I also have a 200Mhz one but to be > honest > >> for 99% of vintage stuff the Hantek is fine. It is only 8-bit, it is a > bit > >> noisy, but its small enough to slip in the laptop bag, it doesn't need a > >> separate PSU... > >> > >> Dave Wade > >> G4UGM > >> > >> > > >
