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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Oscilloscope delivers 25 GHz bandwith on 4 channels
Date: Mon, 09 Dec 2024 06:40:34 GMT
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On a sunny day (Sun, 8 Dec 2024 21:53:47 +0000) it happened John R Walliker
<jrwalliker@gmail.com> wrote in <vj54hb$3u8r5$1@dont-email.me>:

>On 08/12/2024 13:08, Jan Panteltje wrote:
>> 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>:
>>>>
>>>>> 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.
>>>>>>
>>>>>> 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
>>>>>>
>>>>>> Only 25,645 ?
>>>>>>
>>>>>> For the real audiophiles!!
>>>>>>
>>>>>
>>>>> https://www.youtube.com/watch?v=DXYje2B04xE
>>>>>
>>>>> 110GHz bandwidth, 256GS/s four channels, only ~$2M
>>>>
>>>>
>>>>    https://www.keysight.com/us/en/product/UXR1102A/infiniium-uxr-series-oscilloscope-110-ghz-2-channels.html
>>>>
>>>> When I want to see 10 GHz signals I use an old 5 dollar LNB and downconvert to about 1 GHz...
>>>> that into a 35 dollar RTL_SDR stick.
>>>> I know it is not the same, but 100 GHz downconvert should not cost hat much more
>>>> At higher frequencies lasers into non linear crystals as mixer?
>>>>   From the 1.999 M$ left buy a nice house?
>>>>
>>> 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
>
>Yes, but you do also need to keep track of phase in order to
>reconstruct the waveform.

Good point, we need experiment?
If you can sell it for 2M$ maybe worth a try...