A good digital oscilloscope?
in [Design]
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From: Jan Panteltje on 7 Dec 2009 07:10 On a sunny day (Sun, 6 Dec 2009 22:18:04 -0600) it happened "Tim Williams" <tmoranwms(a)charter.net> wrote in <hfhvm1$bp$1(a)news.eternal-september.org>: >*Just because it's an analog scope doesn't mean you don't get storage or >single sweep type readings, it just means it takes more setup. This >photograph was taken with a 10 second exposure, capturing three photoflash >discharges: >http://webpages.charter.net/dawill/Images/Photoflash_Discharge2_sm.jpg > >Tim That is only a simple example, analog scopes can do far more then that: http://panteltje.com/panteltje/scope_tv/index.html And that one is 30 years old, and only 10MHz,
From: Jim Yanik on 7 Dec 2009 08:52 "Tim Williams" <tmoranwms(a)charter.net> wrote in news:hfhvm1$bp$1(a)news.eternal-september.org: > I never was too impressed with digital scopes. None of them have > nearly enough buttons, so you spend all your time wading through > menus. The Rigol I've used (don't remember the number) has awful > menus, they are not always quite what they say they are, and they take > forever to go away. > > Some digital scopes have better refresh than others. The HP > (Agilent??) 54622D's in all the labs at school here work fairly well, > though at least two button presses are required to reach any given > menu option. Refresh is okay, though still chunky on slower sweeps > (>1ms/div). > > My impression of the cheapass Tek TDS's (the thin rectangular ones) is > similar to the Rigol. > > I'm most familiar with my Tek 475, but it would be nice to have > storage, single sweep* and averaging. One of those intermediate > scopes, the ones with analog AND digital, they're perfect for > everything. > > *Just because it's an analog scope doesn't mean you don't get storage > or single sweep type readings, it just means it takes more setup. > This photograph was taken with a 10 second exposure, capturing three > photoflash discharges: > http://webpages.charter.net/dawill/Images/Photoflash_Discharge2_sm.jpg > > Tim > use a digital camcorder for your "storage". TEK used to have a Digital Camera System for it's analog scopes. DCS-something,IIRC. the TEK 468 was a combo analog/digital storage scope,albeit of a low storage BW of 10Mhz. I don't recall if they had a GPIB option. -- Jim Yanik jyanik at localnet dot com
From: Dirk Bruere at NeoPax on 7 Dec 2009 11:37 Nico Coesel wrote: > info_at_cabling-design_dot_com(a)foo.com (DA) wrote: > >> Hi all, >> >> I think I'm going to try and treat myself to an oscilloscope this >> Christmas. I've managed to go without one for the last 15 years or so and, >> frankly, did not have a burning need or even much space for it. I do some >> digital design (PIC based mostly) - LED, motor controls and such and >> every once in a while I wish I has something to look at the signal with. >> >> Are there people here using this brand? Are they any good for use in >> digital designs and, most importantly for me at this point, easy to learn? >> >> I guess, Rigol may not be the only ones making digital oscilloscopes these >> days. What other brands/models should I also look at? > > Also look at Owon (low end Tektronix) > I have heard that the USB and driver s/w for XP is buggy or non-working. Not a problem if you don't want to connect to computer. Plus, they may have got round to fixing it by now. -- Dirk http://www.transcendence.me.uk/ - Transcendence UK http://www.theconsensus.org/ - A UK political party http://www.blogtalkradio.com/onetribe - Occult Talk Show
From: Robert Roland on 7 Dec 2009 12:35 On Sun, 6 Dec 2009 22:18:04 -0600, "Tim Williams" <tmoranwms(a)charter.net> wrote: >Just because it's an analog scope doesn't mean you don't get storage or >single sweep type readings, it just means it takes more setup. I have an ancient Tektronics analog scope, which has storage and single sweep, enabled by the press of a button. -- RoRo
From: Tim Williams on 7 Dec 2009 13:26
"Robert Roland" <fake(a)ddress.no> wrote in message news:43fqh5933dbrl79pi9fvvmmtjqnmnubpul(a)4ax.com... >>Just because it's an analog scope doesn't mean you don't get storage or >>single sweep type readings, it just means it takes more setup. > > I have an ancient Tektronics analog scope, which has storage and > single sweep, enabled by the press of a button. Indeed, I should specify "just because it's an analog non-storage scope". They did make storage CRTs, a friend has one. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms |