The acid test, and a main application, is eye diagrams from differential signals. Some of the diff probes are designed to be soldered into the circuit to be snooped. Good replacement market.
-- John Larkin Highland Technology, Inc picosecond timing laser drivers and controllers jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Seems like if you did it enough, it would be cheaper to build your own. Back in the 80s people were building samplers based on electro-optic crystals and picosecond lasers. The bad news was that the circuit had to be synched to the laser rep rate, not the other way round.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Right, you can't trigger a laser with tolerable jitter.
Hypres made a superconductive sampling scope that needed a jug of liquid helium. That didn't last long.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
I knew Sadeg Faris slightly--he was a FOAF. That was a pretty cool gizmo.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
I think it was a "slideback sampler" like my tunnel-diode college project, an equivalent-time sampler with a 1-bit comparator.
They managed to spray helium onto the sampler substrate that was really, really close to the input SMA.
They're still around:
Shock line samplers are more practical. Research samplers have got to
300 GHz or something crazy like that, but I think the fastest commercial scope is around 100 GHz. At some point, connectors and cables just don't work.-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
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