Products > Test Equipment
Siglent SDS2204X+ or alternative?
kimballa:
Hi all,
I looked for a thread on this topic already but couldn't find a close match; please feel free to point me at one if it's available.
I am in the market for a new scope at the upper end of the amateur range ($2-3k USD). I've been using a 2ch 120MHz USB oscilloscope and need more functionality for what I'm doing.
My projects these days are in DIY audio synthesizer work (some fully analog, others with some digital ICs running at a slow main clock speed but can have fast edge rates to worry about) and various arduino- or pi-based digital systems. That said I want a tool that can come along with me for several years if my focus changes.
My leading contender is the Siglent SDS2204X Plus. They've got a deal right now that boosts the frontend max frequency (so that'd do 350MHz which seems like more than enough) and I'd get the func gen module too.
The things I know I'm looking for are:
- 200MHz+
- 4 channels
- bode plot generation
- decent FFT visualization, especially down near the audio range (sub 100kHz)
- obviously, more sampling rate and waveform depth are better. I don't know if I need to worry about more than the usual 2G/s max, that's probably fine?
Some other considerations are desk space, ability to connect to a windows PC (at minimum for screenshot download, but control / live viz on a bigger monitor would be a bonus).
If there are other attributes you think I should keep in mind please feel free to call them out.
The Siglent's 8 bit adc with 10 bit high res mode seems like it'd likely be fine? I don't know in what cases I'd really need 12 bit sampling.
I tried looking at Rigol's site to see if there was an alternative to consider but they don't make it easy to compare the various scopes they have, of which several are 200MHz.. They focus on front end frequency and don't really clearly highlight how the options are different. Are there some particular models to consider as an alternative to siglent?
I also looked at Keysight and Tek's websites but it seemed like comparable scopes from them would be way more expensive, which doesn't seem worth it.
For what it's worth I have a DC supply and an older generation func gen (1025) from siglent so I am happy generally with Siglent's quality. Just want to make sure I do my due diligence before committing to a purchase here.
(also if anyone knows - does the SDG1025 have what logic it takes to do the bode plot sweeps driven from the scope? Or do the scopes need the newer 1030/1060-generation func gen to use an external device for bode plots?... In which case I'd just make sure the internal function generator option is enabled)
tv84:
--- Quote from: kimballa on June 14, 2023, 03:10:48 pm ---I looked for a thread on this topic already but couldn't find a close match; please feel free to point me at one if it's available.
--- End quote ---
You didn't looked carefully as there are plenty. Someone better than me will show an example.
One thing is guaranteed: you don't need the 200 MHz hype and 350 upgradeability since you can do that by yourself starting with a SDS2104X+.
kimballa:
--- Quote from: tv84 on June 14, 2023, 03:19:06 pm ---
--- Quote from: kimballa on June 14, 2023, 03:10:48 pm ---I looked for a thread on this topic already but couldn't find a close match; please feel free to point me at one if it's available.
--- End quote ---
You didn't looked carefully as there are plenty. Someone better than me will show an example.
One thing is guaranteed: you don't need the 200 MHz hype and 350 upgradeability since you can do that by yourself starting with a SDS2104X+.
--- End quote ---
Again, I would welcome a pointer. I did not find any threads on the first few pages of browsing that spoke to this, nor did keyword searchs for multiple combinations of probable keywords yield a targeted result. I have invested well over an hour in reading this forum about scopes in this category before writing this.
There are a lot of discussions about the Siglent 2000HD series, and a number of threads about comparing the sub-$1k options. There is of course the enormous SDS2zzzX+ series by itself but that the several pages I read there focused pretty specifically on the SDS' own features or bugs.
There are also many threads where people complain that the original poster did not specify their use case, making it difficult to make a useful recommendation, so I was sure to add mine.
But no, in trying to figure out which of the various Rigol MHO or DSO options actually hit this range, it was not actually easy for someone not an expert in this forum's history to find. Again, if I really was just blind to the relevant thread please just drop a link and I'll apologize for wasting folks' time.
Martin72:
Hi,
About the SDS2000X plus, have a look on my signature..
nctnico:
--- Quote from: kimballa on June 14, 2023, 03:10:48 pm ---
I also looked at Keysight and Tek's websites but it seemed like comparable scopes from them would be way more expensive, which doesn't seem worth it.
--- End quote ---
The R&S RTB2004 is missing from your list.
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