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Help me choosing new Oscilloscope
bdunham7:
--- Quote from: bigfede on February 15, 2023, 10:01:55 am ---Basically I'm looking for a valid upgrade. Usually 5mV is sufficient on most of my application.
--- End quote ---
An additional point here on this subject--5mV may seem 'good enough', but when you factor in using 10X or even 100X probes, the front end noise is amplified proportionally.
2N3055:
--- Quote from: bigfede on February 16, 2023, 07:30:59 pm ---
--- Quote from: BillyO on February 16, 2023, 07:09:51 pm ---
--- Quote from: Fungus on February 16, 2023, 03:37:19 pm ---Sure, but that's not obligatory. You can have 8Gsa/S when you really need it.
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If you really need 8Gsa/S then you would also need better than 350MHz analog BW. Sure, it's there, but can you really get the benefit?
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This is something that I was thinking about. Does it worth?
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Short answer, no. It gives you no benefit in this case..
JeremyC:
--- Quote from: bigfede on February 16, 2023, 05:11:11 pm ---
That's my point, if needed the Rigol can satisfy 8Gsa/s! Others costs more and with less feature (eg Rigol have also Function Generator built in)
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8GS/s vs 2GS/s will not matter in described by you cases, but noise level will when you analyze ripples in power supplies.
The 8GS/s (even 4GS/s when 2 channels in use) isn't perfect in the MSO5000 scopes. Check sample rates related link https://www.eevblog.com/forum/testgear/rigol-mso5000-artifacts/ .
You can't shutdown sin(x)/x interpolation in the Rigol MSO5000 and HDO 12 bit models, for me it was one of few deal breakers.
If you have the choice order both scopes, compare which is matching your needs and send the looser back to the vendor. I don’t know about Amazon in Italy, but in the US returns are free of charge.
Good luck :)
BillyO:
My story.
A few months ago I went thought exactly this exercise.
I was in the market for quite an extensive lab upgrade including 2 scopes. One was a lower end scope and the Siglent 1004X-E series was the clear winner, but I also wanted something that would be at least a full step above that range.
I had a list of things I wanted in a scope. Bandwidth was high on the list as was low noise. But I also had other things I leaned towards. Personal preferences. After a brief (maybe 2 weeks) scan of the available scopes I narrowed it down to the Rigol (MSO5000) and the Siglent (SDS2000XP). The price of the Rigol at the time was a real bonus, but my experience with the Siglent 1104X-E was also a great bonus. So .. to break the tie I printed out the full data sheets from both and went through the specs line by line from MY perspective and marked the sheets up with green for good and orange for nah, then I went with the one that had the most green. For me that was the Siglent by quite a big margin.
Getting folks' suggestions is a good exercise, but knuckling under and owning up to your personal needs is paramount in making a good decision. Spending around $1K on a scope should not be a decision left to anonymous folks on the internet. Do you own diligence.
Fungus:
--- Quote from: bdunham7 on February 16, 2023, 07:50:32 pm ---
--- Quote from: bigfede on February 15, 2023, 10:01:55 am ---Basically I'm looking for a valid upgrade. Usually 5mV is sufficient on most of my application.
--- End quote ---
An additional point here on this subject--5mV may seem 'good enough', but when you factor in using 10X or even 100X probes, the front end noise is amplified proportionally.
--- End quote ---
For the stated use case ("ripple") the probes will be in 1x mode.
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