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MSO5000 Bode Plot Capability: Is it Good Enough? [Many tips about a 1st scope]

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balnazzar:

--- Quote from: 2N3055 on October 04, 2022, 10:49:36 am ---
Limit will be 10 MHz because that is the limit of internal waveform generator. Scope bandwidth is better, up to 30 MHz.


--- End quote ---

So, if I stimulate the circuit with an external WG, the AD2 will bodeplot its response? Thanks.

Frex:

--- Quote from: 2N3055 on October 04, 2022, 10:46:07 am ---
--- Quote from: egonotto on October 04, 2022, 09:37:36 am ---Hello,

the SDS1104X-E  has only a Display Resolution of 800×480.

But I think it is a great scope.

The Analog Discovery and Analog Discovery 2 are small laboratories much more than a scope. They are practical in combination with breadboards. I am biased and I like them, but in the meantime they have become very expensive. Maybe you'll get them academically.

I have an Analog Discovery an Analog Discovery 2 and a Digital Discovery. If 2N3055 or someone else wants to have something tested I try it if my place (20 cm * 40 cm) is enough.

Best regards
egonotto

--- End quote ---
Thank you, you are very kind.
In the light of these discussions, I would like to know how well it would fare doing classic stability analysys, on a simple opamp circuit or a simple PSU.  Siglent has A.N. : https://www.siglenteu.com/application-note/power-supply-loop-response-bodeii/ where simple PSU is measured. Something like that.
Regards,
Sinisa

--- End quote ---

Hello,

I own the AD1 for many years now, and even if i have many other equipments
it was very conveniant to use in many situations. Clearly the big difference with others
PC based intruments is the software side.
It seem designed and thinked by/with real hardware engineers (not a progammer).

To answer you, yes you can perform good gain/phase responses of  closed loop gain of SMPS
with it (and measure phase et gain margin). I used it for this some month ago for
a small DC/DC converter (5W push pull) and for a 1800W 1kV/24V PSU.
I both case it worked very well after setting well all parameters.
An exemple of result below, with the corresponding step response also made with AD1.
My 2 cents.
Regards.

Frex

Fungus:

--- Quote from: 2N3055 on October 04, 2022, 09:03:34 am ---You don't own AD2...

--- End quote ---

Ummm....

Fungus:

--- Quote from: balnazzar on October 04, 2022, 10:21:30 am ---Also, can you confirm that the software is complete, functional, and overall better than the sw that comes generally with bench scopes?

--- End quote ---

As I said earlier, you can download and try the software for free.

Fungus:
Dave also did a video on the AD1:



AFAIK the only real difference between the AD1 and AD2 is the on-board programmable power supplies.

(and a prettier case)

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