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

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JeremyC:

--- Quote from: tautech on October 07, 2022, 07:28:41 pm ---
--- Quote from: JeremyC on October 07, 2022, 05:03:02 pm ---
--- Quote from: balnazzar on October 07, 2022, 11:29:30 am ---I got the AD2 yesterday. I'm fooling around with it, so far i like it :)

I think I just need a flat cable to connect the BNC adapter to the AD2, otherwise the connector won't last long (hoping that the cable won't add too much crosstalk..).

One thing I don't like is indeed the fragility of the stuff  :wtf:. I don't know how they could use them in university labs and not having them broken the first day by the students.

I should get the get the little Siglent today, will keep you posted.

--- End quote ---

balnazzar, FYI Probably you will be not able to compensate the Siglent probes with the "Digilent BNC" because the AD2 has relatively high input capacitance (~25pF).
You will need probes with compensation range  17pf< and >30pF. I bought "Sumnacon 2 Pack P6100 100 MHz 600V" from Amazon for $12.99, they will compensate 10 - 35pF.

--- End quote ---
Well the probe datasheet suggests otherwise:
https://siglentna.com//wp-content/uploads/dlm_uploads/2022/08/Probe_DataSheet-E01B.pdf
Siglent PP510
Compensation Range 10pF-35pF

--- End quote ---

Thank you for the comment. Initially I wrote "will not", and since I never owned probes from Siglent I edited my post and added "probably".
My experience was based on PVP2350 from Rigol (BTW, I wouldn't recommend these probes), I tried also few another Chinese probes and I was never able to compensate.
I have 2 vintage probes and they are working great with the AD2.
 1. Probe Master PM2801A x1, X10
 2. STACK (made in Japan) CP-243 x100

 

alm:
The trimmer caps used for probe compensation are not particularly low tolerance, so while the probe is not guaranteed to compensate outside the specified range, it's common for them to have a larger compensation range than specified.

balnazzar:

--- Quote from: Martin72 on October 07, 2022, 03:29:10 pm ---
--- Quote from: balnazzar on October 07, 2022, 11:47:44 am ---One thing that may be of interest.

The AD2 also has the 'no zoom out' issue, exactly as the Siglents and many other scopes.

--- End quote ---

This is not an issue... ::)

--- End quote ---

It's hardly a good thing.

balnazzar:

--- Quote from: JeremyC on October 07, 2022, 05:03:02 pm ---
--- Quote from: balnazzar on October 07, 2022, 11:29:30 am ---I got the AD2 yesterday. I'm fooling around with it, so far i like it :)

I think I just need a flat cable to connect the BNC adapter to the AD2, otherwise the connector won't last long (hoping that the cable won't add too much crosstalk..).

One thing I don't like is indeed the fragility of the stuff  :wtf:. I don't know how they could use them in university labs and not having them broken the first day by the students.

I should get the get the little Siglent today, will keep you posted.

--- End quote ---

balnazzar, FYI Probably you will be not able to compensate the Siglent probes with the "Digilent BNC" because the AD2 has relatively high input capacitance (~25pF).
You will need probes with compensation range  17pf< and >30pF. I bought "Sumnacon 2 Pack P6100 100 MHz 600V" from Amazon for $12.99, they will compensate 10 - 35pF.

--- End quote ---

Thanks man, you taught me something useful!
Here is what I'll buy: https://www.amazon.it/gp/product/B08B7P3C53/ref=ox_sc_saved_title_3?smid=A90CWHFC472FI&th=1

They are 10-35pF, too. Good price, 200 MHz, and with an useful BNC-minigrabber.

Only, now I'm not sure they'll get along with the (hacked) Siglent.

balnazzar:

--- Quote from: JeremyC on October 07, 2022, 05:29:10 pm ---
--- Quote from: balnazzar on October 07, 2022, 11:47:44 am ---One thing that may be of interest.

The AD2 also has the 'no zoom out' issue, exactly as the Siglents and many other scopes.

--- End quote ---

Just capture few periods in the main scope window and use "Zoom" option.


--- End quote ---

Good trick :) Thanks!
(I assume you wanted to say 'more periods'..?)

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