A good digital oscilloscope?
in [Design]
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From: krw on 10 Dec 2009 19:43 On Wed, 09 Dec 2009 07:38:37 -0800, Joerg <invalid(a)invalid.invalid> wrote: >krw wrote: >> On Tue, 08 Dec 2009 18:59:11 -0800, Joerg <invalid(a)invalid.invalid> >> wrote: >> >>> krw wrote: >>>> On Tue, 08 Dec 2009 14:36:53 -0500, Spehro Pefhany >>>> <speffSNIP(a)interlogDOTyou.knowwhat> wrote: >>>> >>>>> On Tue, 08 Dec 2009 10:28:27 -0800, John Larkin >>>>> <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >>>>> >>>>>> On Mon, 7 Dec 2009 22:21:43 -0600, "Tim Williams" >>>>>> <tmoranwms(a)charter.net> wrote: >>>>>> >>>>>>> "Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_(a)charter.net> wrote in message >>>>>>> news:oFhTm.36236$kY2.31856(a)newsfe01.iad... >>>>>>>> My Tek 485 serves me well. I do have a small assortment of digital scopes >>>>>>>> for portable use to gather basic data and road trip testing how ever, I >>>>>>>> find that my 485 still gives me nice results at the bench as long as I >>>>>>>> don't need live digital storage. >>>>>>>> It's the only scope I have that I can take full advantage of my active >>>>>>>> Fet probes when I need them. >>>>>>> 486 is on my Wish List. And 2465. Yessss, my preciousss.... >>>>>>> >>>>>>> >>>>>>> Tim >>>>>> I love our TPS2024. 200 MHz, and all four channels and the trigger >>>>>> input are fully floating. Wanna clip the probe ground lead onto the >>>>>> source of a fet that's flailing 400 volts off ground? No problem. >>>>>> >>>>>> John >>>>> Shame about that antediluvian CF card slot that can't write to even a >>>>> 2G card. 8-( >>>> Beats waiting 3 minutes to write to floppy. >>>> >>> But wouldn't you think a scope of this day and age would come with a USB >>> stick slot? I mean, it's been years now ... >>> >>> Mine did :-) >> >> You'd think. AIUI, USB sticks are a PITA to write but the work only >> has to be done once. > > >My scope writes a screen shot onto a stick in less than a second. The >nice thing is that they are ubiquitous, you can plug them into just >about any PC unless it's really, really old. If I just save the "screen shot" it doesn't save any settings. The file can be read back into the scope and the trace restored into whatever setting are there. IOW, useless. The alternative is to dump memory to a CSV, all 64K samples. That amounts to ~300KB.
From: John Larkin on 10 Dec 2009 21:12 On Thu, 10 Dec 2009 18:43:31 -0600, krw <krw(a)att.bizzzzzzzzzzz> wrote: >On Wed, 09 Dec 2009 07:38:37 -0800, Joerg <invalid(a)invalid.invalid> >wrote: > >>krw wrote: >>> On Tue, 08 Dec 2009 18:59:11 -0800, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> krw wrote: >>>>> On Tue, 08 Dec 2009 14:36:53 -0500, Spehro Pefhany >>>>> <speffSNIP(a)interlogDOTyou.knowwhat> wrote: >>>>> >>>>>> On Tue, 08 Dec 2009 10:28:27 -0800, John Larkin >>>>>> <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >>>>>> >>>>>>> On Mon, 7 Dec 2009 22:21:43 -0600, "Tim Williams" >>>>>>> <tmoranwms(a)charter.net> wrote: >>>>>>> >>>>>>>> "Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_(a)charter.net> wrote in message >>>>>>>> news:oFhTm.36236$kY2.31856(a)newsfe01.iad... >>>>>>>>> My Tek 485 serves me well. I do have a small assortment of digital scopes >>>>>>>>> for portable use to gather basic data and road trip testing how ever, I >>>>>>>>> find that my 485 still gives me nice results at the bench as long as I >>>>>>>>> don't need live digital storage. >>>>>>>>> It's the only scope I have that I can take full advantage of my active >>>>>>>>> Fet probes when I need them. >>>>>>>> 486 is on my Wish List. And 2465. Yessss, my preciousss.... >>>>>>>> >>>>>>>> >>>>>>>> Tim >>>>>>> I love our TPS2024. 200 MHz, and all four channels and the trigger >>>>>>> input are fully floating. Wanna clip the probe ground lead onto the >>>>>>> source of a fet that's flailing 400 volts off ground? No problem. >>>>>>> >>>>>>> John >>>>>> Shame about that antediluvian CF card slot that can't write to even a >>>>>> 2G card. 8-( >>>>> Beats waiting 3 minutes to write to floppy. >>>>> >>>> But wouldn't you think a scope of this day and age would come with a USB >>>> stick slot? I mean, it's been years now ... >>>> >>>> Mine did :-) >>> >>> You'd think. AIUI, USB sticks are a PITA to write but the work only >>> has to be done once. >> >> >>My scope writes a screen shot onto a stick in less than a second. The >>nice thing is that they are ubiquitous, you can plug them into just >>about any PC unless it's really, really old. > >If I just save the "screen shot" it doesn't save any settings. The >file can be read back into the scope and the trace restored into >whatever setting are there. IOW, useless. > >The alternative is to dump memory to a CSV, all 64K samples. That >amounts to ~300KB. Photograph the screen, along with any post-its you have plastered around the edge. I like the photo look better than the data dump. It looks more authentic. http://www.highlandtechnology.com/DSS/V346DS.html http://www.highlandtechnology.com/DSS/T346DS.html John
From: krw on 10 Dec 2009 23:42 On Thu, 10 Dec 2009 18:12:20 -0800, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >On Thu, 10 Dec 2009 18:43:31 -0600, krw <krw(a)att.bizzzzzzzzzzz> wrote: > >>On Wed, 09 Dec 2009 07:38:37 -0800, Joerg <invalid(a)invalid.invalid> >>wrote: >> >>>krw wrote: >>>> On Tue, 08 Dec 2009 18:59:11 -0800, Joerg <invalid(a)invalid.invalid> >>>> wrote: >>>> >>>>> krw wrote: >>>>>> On Tue, 08 Dec 2009 14:36:53 -0500, Spehro Pefhany >>>>>> <speffSNIP(a)interlogDOTyou.knowwhat> wrote: >>>>>> >>>>>>> On Tue, 08 Dec 2009 10:28:27 -0800, John Larkin >>>>>>> <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >>>>>>> >>>>>>>> On Mon, 7 Dec 2009 22:21:43 -0600, "Tim Williams" >>>>>>>> <tmoranwms(a)charter.net> wrote: >>>>>>>> >>>>>>>>> "Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_(a)charter.net> wrote in message >>>>>>>>> news:oFhTm.36236$kY2.31856(a)newsfe01.iad... >>>>>>>>>> My Tek 485 serves me well. I do have a small assortment of digital scopes >>>>>>>>>> for portable use to gather basic data and road trip testing how ever, I >>>>>>>>>> find that my 485 still gives me nice results at the bench as long as I >>>>>>>>>> don't need live digital storage. >>>>>>>>>> It's the only scope I have that I can take full advantage of my active >>>>>>>>>> Fet probes when I need them. >>>>>>>>> 486 is on my Wish List. And 2465. Yessss, my preciousss.... >>>>>>>>> >>>>>>>>> >>>>>>>>> Tim >>>>>>>> I love our TPS2024. 200 MHz, and all four channels and the trigger >>>>>>>> input are fully floating. Wanna clip the probe ground lead onto the >>>>>>>> source of a fet that's flailing 400 volts off ground? No problem. >>>>>>>> >>>>>>>> John >>>>>>> Shame about that antediluvian CF card slot that can't write to even a >>>>>>> 2G card. 8-( >>>>>> Beats waiting 3 minutes to write to floppy. >>>>>> >>>>> But wouldn't you think a scope of this day and age would come with a USB >>>>> stick slot? I mean, it's been years now ... >>>>> >>>>> Mine did :-) >>>> >>>> You'd think. AIUI, USB sticks are a PITA to write but the work only >>>> has to be done once. >>> >>> >>>My scope writes a screen shot onto a stick in less than a second. The >>>nice thing is that they are ubiquitous, you can plug them into just >>>about any PC unless it's really, really old. >> >>If I just save the "screen shot" it doesn't save any settings. The >>file can be read back into the scope and the trace restored into >>whatever setting are there. IOW, useless. >> >>The alternative is to dump memory to a CSV, all 64K samples. That >>amounts to ~300KB. > >Photograph the screen, along with any post-its you have plastered >around the edge. Ick! It's difficult to manipulate the data on the photograph. >I like the photo look better than the data dump. It looks more >authentic. Funny, most people trust anything a computer dumps out. ;-) >http://www.highlandtechnology.com/DSS/V346DS.html > >http://www.highlandtechnology.com/DSS/T346DS.html
From: Joerg on 11 Dec 2009 14:13 John Larkin wrote: > On 10 Dec 2009 17:26:14 GMT, Robert Latest <boblatest(a)yahoo.com> > wrote: > >> Joerg wrote: >> >>> Back in those days watch dials would be readable all night, not nearly >>> have that much decay. That is no longer the case, no matter what fancy >>> material they use. >> I wonder if the phosphorescence of that radium compound has anything to >> do with the radium's radioactivity. Maybe the radioactivity helps to get >> the energy into or back out of the long-term storage states. >> >> robert > > Of course it does. Radium phosphors will glow in the dark for > centuries. That's what the radium is for. Tritium too, except its > half-life is around 12 years. > I remember back in the 60's and 70's that there was the occasional warning not to wear a wrist watch "upside down" because it's then too close to your reproductive functions when having the hand in a pocket. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Joerg on 11 Dec 2009 14:16
krw wrote: > On Thu, 10 Dec 2009 18:12:20 -0800, John Larkin > <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: > >> On Thu, 10 Dec 2009 18:43:31 -0600, krw <krw(a)att.bizzzzzzzzzzz> wrote: >> >>> On Wed, 09 Dec 2009 07:38:37 -0800, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> krw wrote: >>>>> On Tue, 08 Dec 2009 18:59:11 -0800, Joerg <invalid(a)invalid.invalid> >>>>> wrote: >>>>> >>>>>> krw wrote: >>>>>>> On Tue, 08 Dec 2009 14:36:53 -0500, Spehro Pefhany >>>>>>> <speffSNIP(a)interlogDOTyou.knowwhat> wrote: >>>>>>> >>>>>>>> On Tue, 08 Dec 2009 10:28:27 -0800, John Larkin >>>>>>>> <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >>>>>>>> >>>>>>>>> On Mon, 7 Dec 2009 22:21:43 -0600, "Tim Williams" >>>>>>>>> <tmoranwms(a)charter.net> wrote: >>>>>>>>> >>>>>>>>>> "Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_(a)charter.net> wrote in message >>>>>>>>>> news:oFhTm.36236$kY2.31856(a)newsfe01.iad... >>>>>>>>>>> My Tek 485 serves me well. I do have a small assortment of digital scopes >>>>>>>>>>> for portable use to gather basic data and road trip testing how ever, I >>>>>>>>>>> find that my 485 still gives me nice results at the bench as long as I >>>>>>>>>>> don't need live digital storage. >>>>>>>>>>> It's the only scope I have that I can take full advantage of my active >>>>>>>>>>> Fet probes when I need them. >>>>>>>>>> 486 is on my Wish List. And 2465. Yessss, my preciousss.... >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Tim >>>>>>>>> I love our TPS2024. 200 MHz, and all four channels and the trigger >>>>>>>>> input are fully floating. Wanna clip the probe ground lead onto the >>>>>>>>> source of a fet that's flailing 400 volts off ground? No problem. >>>>>>>>> >>>>>>>>> John >>>>>>>> Shame about that antediluvian CF card slot that can't write to even a >>>>>>>> 2G card. 8-( >>>>>>> Beats waiting 3 minutes to write to floppy. >>>>>>> >>>>>> But wouldn't you think a scope of this day and age would come with a USB >>>>>> stick slot? I mean, it's been years now ... >>>>>> >>>>>> Mine did :-) >>>>> You'd think. AIUI, USB sticks are a PITA to write but the work only >>>>> has to be done once. >>>> >>>> My scope writes a screen shot onto a stick in less than a second. The >>>> nice thing is that they are ubiquitous, you can plug them into just >>>> about any PC unless it's really, really old. >>> If I just save the "screen shot" it doesn't save any settings. The >>> file can be read back into the scope and the trace restored into >>> whatever setting are there. IOW, useless. >>> >>> The alternative is to dump memory to a CSV, all 64K samples. That >>> amounts to ~300KB. >> Photograph the screen, along with any post-its you have plastered >> around the edge. > > Ick! It's difficult to manipulate the data on the photograph. > Maybe some AGW guys can show you how to do that ... <ducking for cover> [...] -- SCNR, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |