Very fast oscilloscopes
in [Design]
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From: Joel Koltner on 29 Apr 2010 20:07 "Nico Coesel" <nico(a)puntnl.niks> wrote in message news:4bd9fe31.477306468(a)news.planet.nl... > "Joel Koltner" <zapwireDASHgroups(a)yahoo.com> wrote: >>...but I do expect it's pretty cool to see, e.g., a non-repetitive >>high-speed >>bitstream like SATA or PCI-E or similar at, say, 6Gbps go marching by... > For what purpose? Watching for glitches, runts, or other improprieties that an eye diagram (or sampling scope) wouldn't catch.
From: Joel Koltner on 29 Apr 2010 20:09 "Robert Baer" <robertbaer(a)localnet.com> wrote in message news:x_OdnQx8saTCmkfWnZ2dnUVZ_tudnZ2d(a)posted.localnet... > "Real time"?? Does that mean it can do single shot events giving a > continuous (analog) trace of the event? Correct. (Although that analog trace is digitized, of course.)
From: Robert Baer on 29 Apr 2010 23:26 Joel Koltner wrote: > "Robert Baer" <robertbaer(a)localnet.com> wrote in message > news:x_OdnQx8saTCmkfWnZ2dnUVZ_tudnZ2d(a)posted.localnet... >> "Real time"?? Does that mean it can do single shot events giving a >> continuous (analog) trace of the event? > > Correct. (Although that analog trace is digitized, of course.) > Thanks; that reference was way too big for dial-up.
From: Kevin McMurtrie on 30 Apr 2010 02:22 In article <NPiCn.291919$Vq1.192861(a)en-nntp-03.dc1.easynews.com>, "Joel Koltner" <zapwireDASHgroups(a)yahoo.com> wrote: > I bet Agilent wants a pretty penny for their new 32GHz real-time scopes: > http://cp.literature.agilent.com/litweb/pdf/5990-5271EN.pdf > > And to think that it was only ~20 years ago that a Tek 11802 with the SD-24 > (24GHz) sampling head -- that samples at all of 100kHz -- was the hotest > ticket... now available on eBay for some single-digit percentage of the > original price... > > ---Joel It's a little scary that such an expensive piece of precision hardware runs Windows. Whatever happened to using simple embedded operating systems that don't have a zillion extra features to crash? -- I won't see Google Groups replies because I must filter them as spam
From: Nico Coesel on 30 Apr 2010 03:38
"Joel Koltner" <zapwireDASHgroups(a)yahoo.com> wrote: >"Nico Coesel" <nico(a)puntnl.niks> wrote in message >news:4bd9fe31.477306468(a)news.planet.nl... >> "Joel Koltner" <zapwireDASHgroups(a)yahoo.com> wrote: >>>...but I do expect it's pretty cool to see, e.g., a non-repetitive >>>high-speed >>>bitstream like SATA or PCI-E or similar at, say, 6Gbps go marching by... >> For what purpose? > >Watching for glitches, runts, or other improprieties that an eye diagram (or >sampling scope) wouldn't catch. IMHO at those frequencies a glitch would exceed the driver's frequency response. I bet those signals look (much) like sine waves. -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico(a)nctdevpuntnl (punt=.) -------------------------------------------------------------- |