.
You'd have exhibit truly remarkable incompetence to do that badly.
Sphero Pefany could probably get in done in China for peanuts in days, but there are going to be coil-winding shops in San Francisco, if John Larkin c ould be bother to look. And extending the design time beyond a week would t ake a great deal of cut-and-try design evolution, which is to say tinkering rather than design.
-- Bill Sloman, Sydney
And a lot of LeCroy's. Ours only cost $60K.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Both soon discontinued. The Hypres was a single-bit sampler that needed a liquid helium jug beside it. The PSPL was a shock-line based sampler, which most fast equivalent-time samplers probably still are.
The market is better for scopes with ADCs, not just equivalent-time samplers, because of the complex modulations in comm systems, which is where the money is. We are mostly happy with scoping repetitive waveforms, so an old 11801 works fine.
We bought the 7 GHz LeCroy to work on PCI Express, where data patterns matter. It has a virtual (software) PLL that recovers the data clock all in software, from data stored from a single channel input. That's cute. It has a giant screen and runs Windows, so you can look at The Drudge Report on it while it's not scoping.
Right. One big problem with really fast scopes is that 100 GHz signals can't make it very far through coax. The coax has to be tiny to avoid modes, and then the skin losses are huge.
I wonder what a 100 GHz probe would cost.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
I sorta doubt that they keep million-dollar scopes piled 10 deep in the warehouse. ;)
In the eV to keV energy range, that's sometimes true. MeV stuff is basically confined to nukes of various sorts, and GeV stuff will never get there.
Fun. Some pals of mine at IBM built a 90-GHz single-chip transceiver in about 2006.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
It would probably be waveguide. ;)
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Modern scopes are really in a different category--as long as the front end is fast and stable, they can fix most kinds of sins with DSP. The TDS 694C has (iirc) a 68020 in it, which isn't going to make much of a dent in a 40 GB/s data rate.
And then with all that capability, the makers screw up the step response on purpose. :(
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Yes. They compete to have the most impressive frequency-domain 3dB point, and step response be damned.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
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