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05/22/07 13:46
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#139623 - [OT] DSO- How it's made ?
Hi people,
I'm surfing about digital oscilloscopes and found - in Digikey.com i can buy ADC 100Ms/s and FIFO with 6ns
cycle time.
So for small money maybe i can build sampling part of scope.
On other hand - with 100Ms/s signals only up to 10 MHz can
be viewed. And input circuit must be low-passed to this band.
Is this corect?

So - how it's made?- >500Ms/s.
I read Tektronix use SiGe custom chips from IBM,
but what use "small" companies for PC-based USB scopes?

Still wondering,
Stefan



List of 20 messages in thread
TopicAuthorDate
[OT] DSO- How it's made ?            01/01/70 00:00      
   look at ADC spec's.            01/01/70 00:00      
      in other words,            01/01/70 00:00      
         Not quite            01/01/70 00:00      
            tricks & tricks            01/01/70 00:00      
               Analog memories...            01/01/70 00:00      
               that's what the analog 'scope does!            01/01/70 00:00      
   Some interesting reading from Maxim            01/01/70 00:00      
   I have no doubt you can            01/01/70 00:00      
      use for what            01/01/70 00:00      
   Expansion slot test equipment            01/01/70 00:00      
      there is now a plethora of such with USB            01/01/70 00:00      
         crappy GUI            01/01/70 00:00      
            I prefer the "feel" of manually controlled gear            01/01/70 00:00      
         Can't be done, or just hasn't been done?            01/01/70 00:00      
            there's no reason it couldn't            01/01/70 00:00      
               The PeeCee would get in the way            01/01/70 00:00      
                  not only...            01/01/70 00:00      
                     a few buttons, dials, and knobs, but not enough            01/01/70 00:00      
   Critics and suggestions invited - 1GHz sampler            01/01/70 00:00      

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