Products > Test Equipment
MSO5000 Bode Plot Capability: Is it Good Enough? [Many tips about a 1st scope]
mwb1100:
--- Quote from: balnazzar on October 01, 2022, 04:06:29 pm ---But I need decent Bode plots. Now, of course I've read here and there, and the general opinion is somewhat twofold.. Some say that MSO5K's Bode plot are decent and people who say otherwise are just bashers. Others say that those BP are so bad that they are tantamount to being useless.
I'd like to hear the opinion of someone who has the '5K and actually use it to perform frequency response analysis quite often.
--- End quote ---
I don't know a damn thing about Bode plots, but there is a youtube with someone generating a Bode plot on an MSO5000 and showing some Bode plot results for various opamps. The "results" part of the video just shows the final graphs - the time spent plotting the graphs isn't in the video.
Hopefully there will be some information there that is useful to you.
--- Quote from: balnazzar on October 01, 2022, 04:06:29 pm ---- I can live with the dim display.
- I can also live with the sh*tty fan or snap a noctua into it.
--- End quote ---
I got an MSO5074 a couple weeks ago (haven't hacked it yet); the display doesn't seem dim to me and the fan is barely noticeable (it is silent compared to the noise the fan on my cheap "Dr. Meter" power supply makes). I don't know if Rigol addressed those issues or if I'm just not sensitive to them.
Fungus:
--- Quote from: mwb1100 on October 02, 2022, 09:08:51 am ---
--- Quote from: balnazzar on October 01, 2022, 04:06:29 pm ---- I can live with the dim display.
- I can also live with the sh*tty fan or snap a noctua into it.
--- End quote ---
I got an MSO5074 a couple weeks ago (haven't hacked it yet); the display doesn't seem dim to me and the fan is barely noticeable (it is silent compared to the noise the fan on my cheap "Dr. Meter" power supply makes). I don't know if Rigol addressed those issues or if I'm just not sensitive to them.
--- End quote ---
--- Quote from: balnazzar on October 01, 2022, 04:06:29 pm ---- Maybe I can even live with the subpar front end and the noise (just maybe).
--- End quote ---
And they've added a hires mode that will reduce noise to within spitting distance of a Siglent in a pinch thanks to the beast's massive sample rate.
(but not on all channels simultaneously)
balnazzar:
--- Quote from: mwb1100 on October 02, 2022, 09:08:51 am ---
I don't know a damn thing about Bode plots, but there is a youtube with someone generating a Bode plot on an MSO5000 and showing some Bode plot results for various opamps. The "results" part of the video just shows the final graphs - the time spent plotting the graphs isn't in the video.
I got an MSO5074 a couple weeks ago (haven't hacked it yet); the display doesn't seem dim to me and the fan is barely noticeable (it is silent compared to the noise the fan on my cheap "Dr. Meter" power supply makes). I don't know if Rigol addressed those issues or if I'm just not sensitive to them.
--- End quote ---
Thanks for reporting about the display and the noise.
As for the Bodes, I'd like to see the 5K's Bode plots compared to a scope (or analyzer) that's known for producing high quality Bode plots. Seeing it standalone is a bit pointless without nothing to compare with.
But thanks for the video, it's interesting by its own.
balnazzar:
--- Quote from: tautech on October 01, 2022, 11:04:47 pm ---You should also be aware SDS2kX Plus has an inbuilt 50 MHz AWG and therefore already has a stimulus source for Bode plot use whereas with X-E models a stimulus source for Bode plot use is an additional expenditure.
--- End quote ---
Is it inbuilt? I thought one had to buy the little black boxy thing in order to enable the WG...
balnazzar:
--- Quote from: nctnico on October 01, 2022, 11:16:03 pm ---No. But depending on your location, a GW Instek GDS1054B could be a good alternative to buy a decent 4 channel oscilloscope (options can be enabled for free using a key generator available on this forum). For example: https://eleshop.eu/gw-instek-gds-1054b.html
--- End quote ---
Interesting. Mh. How does it compare to the Siglent? Snappier UI?
The screen looks smaller than Siglent's, but it's still 7". Probably it's the scope body that's larger.. I'm seeing that people on this forum adapted a 8" screen, but it's far from being straightforward.
Tell me, is that Eleshop a reliable vendor? Thanks!
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