| Products > Test Equipment |
| Oscilloscope input noise comparison |
| << < (14/27) > >> |
| rsjsouza:
maxwell3e10, thanks for adding the DS4014 to the graph. It seems a bit noisier than some of the other models (although the R&S seems unbeatable). I forgot that you were measuring other modes as well. I can add five more measurements to the mix: BW limitImpedance20MHz50Ω200MHz1MΩ and external 50Ω terminator200MHz50Ω500MHz (no limit)1MΩ and external 50Ω terminator500MHz (no limit)50Ω |
| egonotto:
Hallo, @_Wim_: "Makes me wonder how they do the bandwidth limiting on the lower bandwidth models like mine?" My PicoScope 100MHz 5243A has no bandwidth limit at all. It has full 200MHz. I ask this in the picotech forum: https://www.picotech.com/support/topic33731.html They don't explain what is matter. Best regards egonotto |
| _Wim_:
--- Quote from: MrW0lf on November 02, 2018, 10:20:00 am ---But it is not the case. Scope still has unhackable analog bandwidth and FFT plot would drop accordingly. I know of no other (low end) scopes where FFT is artificially crippled like that. AD2 will honestly go to SR/2 so all the others I know of. When using ref compensation one can flatten the plot nicely, but it would be still limited to reduced resolution according to the actual analog bw. So it's not like you suddenly getting more than you paid for. In Pico & FFT case you get less what you paid for if compare to other scopes. But thats OT - it's just a little soft spot suppose - I've hassled a bit too much to overcome various artificial limitations is PS6. To bad it does not have in-GUI scripting like AD2 which is real limitation-killer. Going SDK for each little hack is cumbersome. Edit: So sorry if it did seem I jumped on you, it just "do not give them any more ideas what to limit" reaction :scared: --- End quote --- Ok, this makes indeed more sense. I also agree the software could use an update. I still like the pico overall, and have used it quite a bit. So far I did not use the SDK at all, but it is still nice to know this is an option. |
| _Wim_:
--- Quote from: egonotto on November 02, 2018, 08:32:58 pm ---My PicoScope 100MHz 5243A has no bandwidth limit at all. It has full 200MHz. --- End quote --- That's nice!. I am also happy with only -6db @200Mhz for my 60Mhz scope. I am still wondering if there is actually a hardware difference between the scopes of the 5000 series (with same channel count). |
| maxwell3e10:
Here is the plot for the Keysight MSOS204A. It is actually not that great compared with R&S scopes. At low frequencies, its even worse than low-cost scopes! I am surprised the noise is so poor on their "high definition" 10 bit scope. Does anyone have any other high-end Keysight scopes to compare? |
| Navigation |
| Message Index |
| Next page |
| Previous page |