Re: Oscilloscope delivers 25 GHz bandwith on 4 channels

On a sunny day (Sun, 8 Dec 2024 12:11:47 +0100) it happened Klaus Vestergaard
Kragelund <klauskvik@hotmail.com> wrote in <vj3utj$3oine$1@dont-email.me>:
 

On 07-12-2024 07:00, Jan Panteltje wrote:

On a sunny day (Fri, 6 Dec 2024 17:59:30 +0100) it happened Lasse Langwadt
<llc@fonz.dk> wrote in <vivahi$2etnj$2@dont-email.me>:
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On 12/5/24 11:31, Jan Panteltje wrote:

Oscilloscope Delivers 25-GHz Bandwidth on Four Channels
          https://www.electronicdesign.com/technologies/test-measurement/oscilloscopes/article/55247306/electronic-design-pico-technology-oscilloscope-delivers-25-ghz-bandwidth-on-four-channels
Pico Technology expanded its PicoScope 9400 Series with the PicoScope 9404A-25, a high-performance oscilloscope with 25 GHz
of
bandwidth on four channels. The company's Sampler-Extended Real-Time Oscilloscope (SXRTO) technology integrates real-time
acquisition with sampling oscilloscope capabilities. Thus, the scope can trigger directly on the signal while recording
pre-trigger
data, with the high time and amplitude resolution of a sampling scope.
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https://www.electronicdesign.com/techxchange/article/55238271/advanced-oscilloscope-techniques
          https://www.picotech.com/products/oscilloscope/picoscope-9000-series/picoscope-9400a-series-sampler-extended-real-time-oscilloscope
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Only 25,645 ?
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For the real audiophiles!!
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https://www.youtube.com/watch?v=DXYje2B04xE
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110GHz bandwidth, 256GS/s four channels, only ~$2M

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   https://www.keysight.com/us/en/product/UXR1102A/infiniium-uxr-series-oscilloscope-110-ghz-2-channels.html
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When I want to see 10 GHz signals I use an old 5 dollar LNB and downconvert to about 1 GHz...
that into a 35 dollar RTL_SDR stick.
I know it is not the same, but 100 GHz downconvert should not cost hat much more
At higher frequencies lasers into non linear crystals as mixer?
  From the 1.999 M$ left buy a nice house?
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Very nice idea, but that will work only for sinusoidal signals, right?

 Well, any complex wafeform can be shown to consist of sinusoidal harmonic components.
I have used FFT and than removing a spectral line and then a reverse FFT for video processing...
not in real time though... All depends on bandwith.
I mean if you have a 100 GHz signal and want the _waveform_ of that signal you will need to be able to see higher harmonics than that
up to 1000 GHz for the tenths harmonics.
 But if it is a repeating signal you could mix down and get the amplitude for each harmonics...
and then reconstruct the waveform from that

So the 100 GHz wide bandwidth scope may get some waveform for a 10 GHz signal...
But you can run it continuous and record it, no trigger needed..., just look at the recording.
linear:
  https://panteltje.nl/pub/ADF4350_via_mixer_2.4GHz.gif
log:
  https://panteltje.nl/pub/ADF4350_via_mixer_2.4GHz_dBc_R820_tuner_fractional_all.gif
 But then I do not try fission so for those laser pulse guys who knows,
 I'v read you earthlings say it is all relative
 Nothing new since early radio.. just faster tranistors and stuff...
 For communicatione the spectra used are usually quite narrow, no harmonic views needed.
There are many ways to get a spectrum...
  https://panteltje.nl/pub/fluorescent_light_spectrum_img_0874.jpg
  https://panteltje.nl/pub/rainbow_IMG_4440.JPG