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Siglent SDG1032 as bad as rigol DG812?
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eTobey:

--- Quote from: 2N3055 on May 18, 2024, 04:31:46 pm ---But believe RF-Loops results, who made VERY comprehensive tests at the time. He knows it inside out.
If some specific test could be defined he could run it.

--- End quote ---

Well even the best specialist can miss a detail... and that detail was the "high level" which i could not explain to you.


--- Quote from: 2N3055 on May 18, 2024, 04:31:46 pm ---
You and I might disagree from time to time but one thing I agree with you 100% is your signature.


--- End quote ---

I am happy, that you realized, that you can see yourself on what ever side you want. That is the beauty of this signature. ;-)


--- Quote from: 2N3055 on May 18, 2024, 04:31:46 pm ---
OP should connect scope to an AWG directly, use full memory, maximum sample rate, and try then.
To exclude DUT, it's power supply, connection to computer ground via ICP connector etc etc..
When something is wrong, you reduce variables. Eliminate sources of confusion. Reduce problem complexity.

--- End quote ---

The OP never had the DUT never connected to that AWG, as he is not that stupid to hook it up to an unknown device.

But tell me, how should full memory and sample rate change anything on that signal???
eTobey:

--- Quote from: Mortymore on May 18, 2024, 02:57:04 pm ---Are you referring to some overshoot when the generator is turned OFF with the outputs still on, right?

It seems that it could happen depending were the square wave is caught at power off. Sometimes it doesn't happen, sometimes overshoots up, other down.

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Anyway, I suppose that the ON/OFF output buttons serves a purpose, and that doesn't happen when they're used

EDIT: It would be so much easier for everybody if at least you had the trouble to proper stand your case with adequate description and images. After all you have the devices.

--- End quote ---

Portugal 1:0 Finland  ;D
temperance:
I just tried to reproduce the problem captured by eTobey but the sig gen. is a SDG2042. It does a clean shut down every time. The only artifacts one can see are caused by common mode currents. But they look different. (There is nothing connected except an oscilloscope short to GND).

So maybe I'm wrong.


--- Quote ---I will do this, but only if you tell me, what you expect to see/happen.
--- End quote ---

Something like this
rf-loop:

--- Quote from: Mortymore on May 18, 2024, 02:57:04 pm ---Are you referring to some overshoot when the generator is turned OFF with the outputs still on, right?

It seems that it could happen depending were the square wave is caught at power off. Sometimes it doesn't happen, sometimes overshoots up, other down.



Anyway, I suppose that the ON/OFF output buttons serves a purpose, and that doesn't happen when they're used

EDIT: It would be so much easier for everybody if at least you had the trouble to proper stand your case with adequate description and images. After all you have the devices.

--- End quote ---

I want look this bit more when I have time for it.
If it is very "random" after shut off with power line, I want still catch it (these upper level "peaks" in end.)

The signal outputs should be cut off before the collapse of the operating voltages progresses to a level where the device starts to run out of control.


How was signals connected. (in your image looks it looks like well connceted with external 50 ohm and coaxial but still I like facts and not my quess.)
What is your SDG Hardware version.
temperance:
I'm able to catch this when the sig gen is starting. That's when some relays are switching just after boot.

As soon as you attach even the smallest load onto the output, nothing of this can be seen at the output. Nothing abnormal.


Edit: this is an SGD2042
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