Products > Test Equipment
Rigol HDO1000 and HDO4000 12bit oscilloscopes launched in China
core:
--- Quote from: 2N3055 on December 19, 2023, 10:25:24 am ---
--- Quote from: Martin72 on December 18, 2023, 09:25:34 pm ---
--- Quote ---You can use math as source for most functions but not FFT.
--- End quote ---
Also does not work with the siglent scopes.
--- End quote ---
I don't know, i think it does..... ^-^
In attachment:
- noisy 1MHz into CH1.
- Math2 (F2) Average(C1)
- Math1 (F1) FFT on (F2)
- Math3 (F3) FFT on (C1)
First image are signals. Second image are FFT-s. Different timebase for nicer FFT res.
You can also do this: FFT(Filter(C1*C2)) in single math channel. And do that 4 times...
And also you can have Memory channel as a source. Which is interesting because that means you have original data saved instead of result. So you can later on change FFT parameters when comparing to something.
Siglent's math is on completely another level.. R&S don't have it on MXOx.. They are working on it though...
--- End quote ---
If we consider that the DHO4000 it's in the same price range as Siglent SDS2000 HD, the answer is simple.
That's why I've bought DHO1000 for the BF price. More than that is too expensive.
DHO1000 can do FFT only for CH1 - Ch4. See below the screen capture. So Yeah :P
ebastler:
--- Quote from: voltsandjolts on December 19, 2023, 12:27:58 pm ---Yes, warm-up and self cal done (several times).
Also swapped probes amoung channels, no change, so CH1 frontend is causing this.
--- End quote ---
Hmm... DC Gain is specified as 2% at full scale, so if the auto-setting did set the gain to use the full scale (more or less), one can argue that the scope is out of spec slightly. Personally I wouldn't be concerned, but will have a look at my DHO1074 when I get to play with it. For the moment, I have all but forgotten about it until Christmas eve. ;)
I found a "Performance Verification Manual", by the way -- only by chance, and only on the ManualsLib site; could not spot it on any Rigol site. Mildly interesting, I'd say: https://www.manualslib.com/manual/3029727/Rigol-Dho1000-Series.html#manual
Edit: Rigol's North America site has it too, on the product page, after scrolling down a bit and selecting the "Manuals" tab:
https://www.rigolna.com/products/digital-oscilloscopes/dho1000/
Martin72:
@performa01:
Ah....ahhhh... :palm:
Then I had misunderstood, sorry.
The other one works of course, I could have said that without testing.
2N3055:
--- Quote from: core on December 19, 2023, 12:37:59 pm ---
--- Quote from: 2N3055 on December 19, 2023, 10:25:24 am ---
--- Quote from: Martin72 on December 18, 2023, 09:25:34 pm ---
--- Quote ---You can use math as source for most functions but not FFT.
--- End quote ---
Also does not work with the siglent scopes.
--- End quote ---
I don't know, i think it does..... ^-^
In attachment:
- noisy 1MHz into CH1.
- Math2 (F2) Average(C1)
- Math1 (F1) FFT on (F2)
- Math3 (F3) FFT on (C1)
First image are signals. Second image are FFT-s. Different timebase for nicer FFT res.
You can also do this: FFT(Filter(C1*C2)) in single math channel. And do that 4 times...
And also you can have Memory channel as a source. Which is interesting because that means you have original data saved instead of result. So you can later on change FFT parameters when comparing to something.
Siglent's math is on completely another level.. R&S don't have it on MXOx.. They are working on it though...
--- End quote ---
If we consider that the DHO4000 it's in the same price range as Siglent SDS2000 HD, the answer is simple.
That's why I've bought DHO1000 for the BF price. More than that is too expensive.
DHO1000 can do FFT only for CH1 - Ch4. See below the screen capture. So Yeah :P
--- End quote ---
DHO1000 is different price range for sure. Especially if you got it at 40% discount.
Many people don't need/use advanced math.
Funny thing is that it is not Siglent that is in problem here. Their scopes have added value and price is great for higher quality.
But you know who is more in problem?
DHO1000 basically has almost same features as R&S RTB2000 in analysis (RTB2000 is very basic scope, except excellent BODE).
DHO1000 has more memory, more resolution, etc.. DHO1000 mathi is pretty much copy how R&S did it on RTB2000. Many GUI concepts too.
In many parameters directly competes with RTB2000.
If only Rigol would take seriously software quality, RTB2000 would be in real trouble..
At this moment, RTB is, of course, serious and mature product and Rigol has long way to go to finish the platform...
voltsandjolts:
--- Quote from: ebastler on December 19, 2023, 12:49:32 pm ---
--- Quote from: voltsandjolts on December 19, 2023, 12:27:58 pm ---Yes, warm-up and self cal done (several times).
Also swapped probes amoung channels, no change, so CH1 frontend is causing this.
--- End quote ---
Hmm... DC Gain is specified as 2% at full scale, so if the auto-setting did set the gain to use the full scale (more or less), one can argue that the scope is out of spec slightly. Personally I wouldn't be concerned, but will have a look at my DHO1074 when I get to play with it. For the moment, I have all but forgotten about it until Christmas eve. ;)
I found a "Performance Verification Manual", by the way -- only by chance, and only on the ManualsLib site; could not spot it on any Rigol site. Mildly interesting, I'd say: https://www.manualslib.com/manual/3029727/Rigol-Dho1000-Series.html#manual
Edit: Rigol's North America site has it too, on the product page, after scrolling down a bit and selecting the "Manuals" tab:
https://www.rigolna.com/products/digital-oscilloscopes/dho1000/
--- End quote ---
I don't think the scope is out of spec, it meets the DC Gain specification for sure. I haven't seen any vertical gain AC specifications, other than bandwidth. This is just my OCD and curious what other owners see ;D
Thanks for links, will take a look.
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