Turn your Rigol DS1052E Oscilloscope into a 100MHz DS1102E
in [Design]
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From: John Larkin on 11 Apr 2010 14:38 On Thu, 08 Apr 2010 20:25:33 -0700, "JosephKK"<quiettechblue(a)yahoo.com> wrote: >On 8 Apr 2010 14:18:01 -0500, The Phantom <phantom(a)aol.com> wrote: > >>On Wed, 7 Apr 2010 15:58:46 +1000, "David L. Jones" <altzone(a)gmail.com> wrote: >> >>>John Larkin wrote: >>>> On Tue, 06 Apr 2010 19:34:32 -0700, >>>> "JosephKK"<quiettechblue(a)yahoo.com> wrote: >>>> >>>>> On Mon, 05 Apr 2010 21:45:57 -0700, John Larkin >>>>> <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >>>>> >>>>>> On Mon, 05 Apr 2010 21:28:29 -0700, >>>>>> "JosephKK"<quiettechblue(a)yahoo.com> wrote: >>>>>> >>>>>>> On Tue, 6 Apr 2010 09:58:53 +0800, "Andrew" <anbyvbel(a)yahoo.com> >>>>>>> wrote: >>>>>>> >>>>>>>> "John Larkin" <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote >>>>>>>> in message news:kj2lr598g79va9rjpir1e1jaa0bvg90ji6(a)4ax.com... >>>>>>>> >>>>>>>>> If you don't like Rigol scopes, buy Tek or Agilent or LeCroy. >>>>>>>>> >>>>>>>>> Of course, the low-end Agilent is actually a Rigol. They rebrand >>>>>>>>> it and sell it for about twice the price of the Rigol. How do >>>>>>>>> you like that for rip-off-ness? >>>>>>>> >>>>>>>> >>>>>>>> Wow, you just deprived Agilent of their hard earned cash, since a >>>>>>>> lot of people will buy Rigol instead. >>>>>>>> You should have kept this information to yourself. >>>>>>> >>>>>>> Bwahahahaha. That tidbit is kind of common knowledge around here >>>>>>> (s.e.d). >>>>>>> >>>>>>> For some real interesting times go really hunting for fast analog >>>>>>> scopes, they are available, though not inexpensive. 500 MHz is >>>>>>> still reasonably available, for about the price of a modest car. >>>>>> >>>>>> Tek 7103s and 7104s, 1 GHz analog scopes with microchannel plate >>>>>> CRTs, are fairly cheap on the used market. >>>>>> >>>>>> An 11801 sampler with a 12 GHz head can be had for under $2K. Nice >>>>>> scopes. >>>>>> >>>>>> John >>>>> >>>>> John, i am talking about brand _new_ analog 'scopes. Probably with >>>>> microchannel faceplates as well. All the old groovy Tektronix >>>>> patents >>>>> have expired. >>>> >>>> The only new analog scopes I know of are minor brands, >>>> B&K/Instek/Kenwood sort of stuff. All the name-brand scopes are >>>> digital now. LeCroy used to sell the 470 MHz Iwatsu scope, but I think >>>> they gave that up. The Iwatsu SS-7840H is around $10K. And not even >>>> color. It looks to me like digital scopes are less expensive at pretty >>>> much every performance point. >>> >>>Yup, economy of scale and other factors. >>> >>>Iwatsu still do a 1GHz analog storage scope at $28K: >>>http://www.tequipment.net/IwatsuTS-81000.html >> >>This one is very nifty, but looking at the block diagram in the downloadable >>"technology" pdf file, it appears that the only way to watch more than one >>channel at a time is in alternate or chopped mode. Also, unlike digital >>storage, one can't look at events before the trigger point. >> >You sound as if this some kind of news. Having grown up with analog scopes, >pretrigger recording is just not that big a thing for me. Digital is great for one-shot events, like destroying parts, or for decoding digital data streams, or for nabbing a beautiful waveform for photography. John
From: John Larkin on 11 Apr 2010 15:57
On Sun, 11 Apr 2010 12:24:56 -0700, Fred Abse <excretatauris(a)invalid.invalid> wrote: >On Sun, 11 Apr 2010 11:36:39 -0700, John Larkin wrote: > >> On Sun, 11 Apr 2010 10:52:37 -0700, Fred Abse >> <excretatauris(a)invalid.invalid> wrote: >> >>>On Wed, 07 Apr 2010 15:58:46 +1000, David L. Jones wrote: >>> >>>> Iwatsu still do a 1GHz analog storage scope at $28K: >>>> http://www.tequipment.net/IwatsuTS-81000.html >>>> >>>> The 400MHz analog is $7500: >>>> http://www.tequipment.net/IwatsuSS-7840.html >>>> and the 470MHz at $12K+: >>>> http://www.tequipment.net/IwatsuSS-7847A.html >>>> Ouch! >>> >>>They all appear to use scan converter tubes, effectively a small CRT >>>coupled to a CCD with LCD raster display. >>> >>>If they're anything like the 400MHz, LeCroy-badged one that I had on demo >>>for a few weeks, some years ago, the trace will be unacceptably thick. We >>>sent that one back. >>> >>>I'd happily pay $28K plus for something the ilk of a 7104. >> >> 7103s and 7104s appear on ebay for around the cost of shipping. Our >> 7104 is the only analog scope I ever use. > >I meant something new / modern, the ilk of a 7104. I've already got two >7104s Then you probably have callouses on your thumb from reflexively whacking the little red watchdog timer button. MCPs have a lifetime coulomb rating. John |