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2 GHz scope: Rigol MSO8000 vs Siglent SDS6000

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JehTeh:
I can chime in a bit regarding the MSO 8k if there are any questions as well. Sighound certainly has a lot more experience with it, but I can offer a North American perspective  :D.No active probes for it yet though, the project needing those is currently on hold, so for the time being I have a relatively fancy Rigol here on my bench that has mostly been used for low speed stuff. I toyed around with the eye diagrams on an SBC we are using (just using the included single ended probe) which was fun but certainly not a deep dive. I tried a cursory measurement of one of our crystal oscillators as well - the fast passive probes indicate 1.6pF capacitance, which to me sounds pretty good for a passive probe, and the measurement looked pretty reasonable (although the input impedance of the probe is only 500 Ohms - something to be aware of).

I do have a separate logic analyser but I have been using the logic probe we got bundled with it and quite like it, it isn't as full featured as a USB unit talking to siggrok but it works more than well enough that I have not touched the discrete LA since I set this up. The only annoyance is you can't search through the logic channels, only the 4 analog channels post decode.

The memory depth is great and is something I have used the most, and am really loving it. The UI certainly slows down when requesting full memory depth (especially when 'zooming in' - otherwise nice and responsive) but when you are debugging a complicated BMS with lots of digital bits and wake/sleep trigger sources, having a massive memory depth and doing a long capture makes life much easier.

There are a few bugs I have noticed as well. Some super minor, like channel labels getting stuck off screen, others annoying like some of the decoders not working if you start with a zoomed out capture on a greater than 50ms timebase (regardless of memory depth setting. CAN, for example, which I have been working with a lot lately of course).

I have used the 5000 series a fair bit and the 8k is just a lot better all around, except maybe the extra lag in the already terrible bug fixing response times from Rigol. It does also lack the bode plot stuff but this is not something I have ever used. No experience with the equivalent Siglent.

frankvh2:
Thanks for the comments. We also have some Rigol MSO5000 units, and they're great value for the money, and pleasant to use. We use them quite a lot.

The available 2.5 GHz diff probes for the Siglent look very nice, and are reasonably priced, so they're certainly an attraction to going that way.

One of the engineers here was telling me yesterday how important having a large screen is. He uses the SPI decoder quite a bit, to look at the output of an ADC. So he has lots of traces on his screen - the analog channel, the SPI signals, and the decoded SPI data. He finds the MSO5000 screen too small for all this, and is pushing for bigger screens. That would appear to be a benefit of the Siglent.

Thanks.

Barleyman:
A bit of necromancy here.

I'm doing this exact same decision, except for a 1GHz scope. Rigol now has MSO 8000A-series, which boosts the bandwith by 50%, so you get 1.5Ghz instead of 1GHz and so on. They also give you 2x 1.5GHz passive probes with the scope, Siglent makes you cough up monies for that separately.

8000A-series is also cheaper than the 8000-series right now (well no idea how long it's been like that), so this seems like a no brainer this moment if you want Rigol.

I'm not intending to go beyond USB 2.0 Hi-speed so I think I'll manage with 2 single ended probes for that, in any case 1.5GHz active probe from Rigol is punitively expensive for something that's good to have.. I could also hook it up to the isolating transformer to do differential on the cheap.

I was leaning Siglent for the 5GSA and better hi-res mode, but that sale on 8000A-series has flipped me.

AndyC_772:
1.5 GHz passive probes? You sure?

What's the capacitive loading, and the impedance at 1.5GHz?

phs:
Just in case you missed checking out this new series (D/MHO5000):

https://int.rigol.com/products/detail/DHO5000

None of them in use here, yet, but keeping them on the future possibilities list...

Good luck with your decision!

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