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From: Jeroen Belleman <jeroen@nospam.please>
Newsgroups: sci.electronics.design
Subject: Re: Oscilloscope delivers 25 GHz bandwith on 4 channels
Date: Fri, 6 Dec 2024 19:47:09 +0100
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On 12/5/24 15:36, john larkin wrote:
> On Thu, 5 Dec 2024 12:27:04 -0000 (UTC), Phil Hobbs
> <pcdhSpamMeSenseless@electrooptical.net> wrote:
> 
>> Jan Panteltje <alien@comet.invalid> 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!!
>>>
>>>
>>
>> Pretty cool gizmo!
>>
>> Cheers
>>
>> Phil Hobbs
> 
> Tek did a random sampling plugin for their 7000 series scopes, the
> 7T11 I think. Sounds like the same idea.
> 
> I want one, but the price is extreme. There's probably not much
> inside.
> 

The 7T11 did a sawtooth scan to sweep a 7S11 sampling unit (with
sampler plug-in) across some time interval. With an S-6 plug-in,
it would do 30ps risetime, which was fast enough for my needs.
This was 1970's equipment, pretty good for the time.

I was very happy when I realized it was possible to drive the
7T11 with a VME DAC and measure the output of the 7S11 with an ADC
in the same crate. That gave me the ability to get traces with
an effective 10GHz bandwidth directly into my PC, and to average
the noise way down, if so desired. No more polaroid pictures of
a fuzzy trace on the scope screen. Real data I could process to
my heart's content, and with much better resolution too.

I loved that piece of equipment. Tektronix were the best in that
era.

Jeroen Belleman