Author Topic: Best 14-Bit Digital Oscilloscope  (Read 5443 times)

0 Members and 1 Guest are viewing this topic.

Online coppice

  • Super Contributor
  • ***
  • Posts: 10034
  • Country: gb
Re: Best 14-Bit Digital Oscilloscope
« Reply #25 on: October 14, 2023, 03:21:58 pm »
ill wait for an 24bit scope  loll
They effectively exist, in the form of advanced audio analysers.
 
The following users thanked this post: egonotto

Online ebastler

  • Super Contributor
  • ***
  • Posts: 7375
  • Country: de
Re: Best 14-Bit Digital Oscilloscope
« Reply #26 on: October 14, 2023, 06:54:22 pm »
ill wait for an 24bit scope  loll
They effectively exist, in the form of advanced audio analysers.

But as explained by edavid, that does not matter. The thermal noise (Johnson noise) is already there. Digitizing it with higher resolution will get you nowhere.
 
The following users thanked this post: Performa01, egonotto

Online coppice

  • Super Contributor
  • ***
  • Posts: 10034
  • Country: gb
Re: Best 14-Bit Digital Oscilloscope
« Reply #27 on: October 14, 2023, 07:35:29 pm »
ill wait for an 24bit scope  loll
They effectively exist, in the form of advanced audio analysers.

But as explained by edavid, that does not matter. The thermal noise (Johnson noise) is already there. Digitizing it with higher resolution will get you nowhere.
Of course. There is a reason why we went from typically 100mV 100k ohm audio interfaces in the pure analogue days, to lower impedance 1V CD interfaces, to at least 2V low impedance interfaces in modern 24 bit audio systems.
 
The following users thanked this post: egonotto, ebastler

Offline BillyO

  • Super Contributor
  • ***
  • Posts: 1848
  • Country: ca
Re: Best 14-Bit Digital Oscilloscope
« Reply #28 on: October 15, 2023, 12:02:35 am »
ill wait for an 24bit scope  loll
With 10nV noise @ 1GHz for $299?

Me too.
Bill  (Currently a Siglent fanboy)
--------------------------------------------------
 
The following users thanked this post: egonotto, thm_w, UK

Online coromonadalix

  • Super Contributor
  • ***
  • Posts: 7009
  • Country: ca
Re: Best 14-Bit Digital Oscilloscope
« Reply #29 on: October 15, 2023, 02:01:10 am »
exactly,  even having tons of resolution, if the noise is there, nothing good will come out
 

Offline pdenisowski

  • Frequent Contributor
  • **
  • Posts: 930
  • Country: us
  • Product Management Engineer, Rohde & Schwarz
    • Test and Measurement Fundamentals Playlist on the R&S YouTube channel
Re: Best 14-Bit Digital Oscilloscope
« Reply #30 on: October 19, 2023, 11:15:32 am »

Since (surprisingly) no one else has explicitly mentioned it yet:  you may want to look into ENOB (effective number of bits)

But yeah, what everyone else said:  the limitation is often the noise, not the number of bits


Test and Measurement Fundamentals video series on the Rohde & Schwarz YouTube channel:  https://www.youtube.com/playlist?list=PLKxVoO5jUTlvsVtDcqrVn0ybqBVlLj2z8
 
The following users thanked this post: egonotto, MegaVolt


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf