I'd like to know if, in your opinion, 2Gsa/s is overkill for a 200Mhz scope.
I'd like to know if, in your opinion, 2Gsa/s is overkill for a 200Mhz scope.
@MrW0lf: Your are showing a different effect here. You are zooming in on a signal without having enough information to display it properly.
For 200MHz bandwidth 500Ms/s should be enough if the oscilloscope has a good sin x/x implementation. A higher samplerate would allow for a less steep roll-off of the input filter resulting in a slightly nicer frequency response but it is unlikely you'll have any benefit from it.
Yes, I'm not sure what he's trying to prove there.
Yes, I know I can hack 1104x-e to 200mhz. But:
i) The sample rate will still be 1Gsa/s vs 2 Gsa/s of the 2202x-e. I find 2Gsa/s attractive, but don't know if in practical terms there's a difference.
ii) If you want to be able to use the 200mhz bandwidth with 1104x-e you must also buy four 200mhz probes, so you should factor this in the equation.
iii) How can I be sure that the hack will effectively enable 200mhz bw without possible hidden quirks?
Another feature of SDS2000X-E series is 50ohm input termination... do you think it is a valuable addition to the scope?
Yes, I'm not sure what he's trying to prove there.
I'm showing real world scenarios instead of dry theory, including importance of proper dot mode which will show analog like representation even if situation is totally hopeless for Sin(x)/x. But I understand this is new concept for you because your scope cant do it.
Edit: Attached same 200MHz edge square sampled at "hopeless" 200MSa/s due to maxed out memory at 10ms/. Dot mode saves situation and gives visual that scope having ~10x of memory would deliver (repetitive signals only).
Oh, wait a minute, they do...
Sigh. If only those cheap Rigols could have a dots mode:
Oh, wait a minute, they do...
And now run it so that input is nearly 2x fNyquist frequency square wave first harmonic and risetime around 1/5 of sampling interval (rt4ns @50MSa/s).
Also be aware that Tautech is a Siglent agent (it says so under his name).
And now run it so that input is nearly 2x fNyquist frequency square wave first harmonic and risetime around 1/5 of sampling interval (rt4ns @50MSa/s).
Like this?
Is this signal same as your previous message.
Andreaux, as you can see there's LOT of opinions on which company does the best job taking ADC samples and displaying them and you can quickly get lost in Nyquist theorum arguments etc. The simple fact is that, for what your stated needs are, the DS1054Z does 99.5% of what you want to do and the UI is pretty good IMHO; if you want to pay more go ahead because, unless you get a bad one, they will all do what you want.
Also be aware that Tautech is a Siglent agent (it says so under his name).
I'd like to know if, in your opinion, 2Gsa/s is overkill for a 200Mhz scope.Late to this.....
I would normally recommend the cheaper SDS1202X-E as a first scope but in your case you have enough understanding to want to select a better product.
The SDS2202X-E offer 2x mem depth and 2x sampling, Bode plots and MSO, WiFi plus several other features over it's little 1202X-E brother.
If there's need for 4ch's the 1104X-E will be a better choice and then the feature set is closer but there is still 2 vs 1 GSa/s and 28 Mpts vs 2x 14 Mpts.
The decider for me and I guess you see it too, the SDS1202X-E is WYSIWYG whereas the SDS1104X-E and SDS2**2X-E are base platforms that WiFi, MSO or AWG can be added to if/when needed.
If we examine a usage scenario, 2 channels for SDS1104X-E and 2 ch's for SDS2202X-E, the sample rate will be the same: 1 GSa/s and memory depth equal too.
Either can be hacked and that's when SDS2202X-E will show a distinct advantage with BW @ 350 MHz. (SDS2352X-E)
I'd like to know if, in your opinion, 2Gsa/s is overkill for a 200Mhz scope.Late to this.....
I would normally recommend the cheaper SDS1202X-E as a first scope but in your case you have enough understanding to want to select a better product.
The SDS2202X-E offer 2x mem depth and 2x sampling, Bode plots and MSO, WiFi plus several other features over it's little 1202X-E brother.
If there's need for 4ch's the 1104X-E will be a better choice and then the feature set is closer but there is still 2 vs 1 GSa/s and 28 Mpts vs 2x 14 Mpts.
The decider for me and I guess you see it too, the SDS1202X-E is WYSIWYG whereas the SDS1104X-E and SDS2**2X-E are base platforms that WiFi, MSO or AWG can be added to if/when needed.
If we examine a usage scenario, 2 channels for SDS1104X-E and 2 ch's for SDS2202X-E, the sample rate will be the same: 1 GSa/s and memory depth equal too.
Either can be hacked and that's when SDS2202X-E will show a distinct advantage with BW @ 350 MHz. (SDS2352X-E)
I've never read anywhere that SDS2202X-E is hackable to 350Mhz. Are you sure?
Is there any particular reason why I should go for the rigol DS1054Z (hackable to 100mhz) in place of siglent 1104x-e (hackable to 200mhz), apart from 100$ difference?
I think it's more than $100 , but.... you haven't mentioned a strict budget and for your stated work there's some reasons you might want to:
a) Better FFT
b) Lower front-end noise in the millivolt ranges
c) Possibility to link it to a signal generator (Siglent brand only, of course) and do frequency sweeps/Bode plots
All the talk about sample rate, etc., is a red herring but as usual the Siglent fan club has derailed the thread with a Rigol-Bashing frenzy and without reading your requirements.
Relevant:
* For audio work you should turn on the 20MHz filter and get rid of all the distracting radio noise from your surroundings that will distract you from real problems in the circuitry.
* For radio work you're interested in sine waves so discussion of rise times is pointless. With the bandwidth of either device you'll have more problems just getting the signal to the 'scope intact.
c) Possibility to link it to a signal generator (Siglent brand only, of course) and do frequency sweeps/Bode plots
Andreaux, as you can see there's LOT of opinions on which company does the best job taking ADC samples and displaying them and you can quickly get lost in Nyquist theorum arguments etc. The simple fact is that, for what your stated needs are, the DS1054Z does 99.5% of what you want to do and the UI is pretty good IMHO; if you want to pay more go ahead because, unless you get a bad one, they will all do what you want.
Also be aware that Tautech is a Siglent agent (it says so under his name).
Is there any particular reason why I should go for the rigol DS1054Z (hackable to 100Mhz) in place of siglent 1104x-e (hackable to 200Mhz), apart from 100$ difference?
Also be aware that Tautech is a Siglent agent (it says so under his name).And you sound like that's a bad thing ?