[ADP3250 Scope Reading With No Probes Connected]

Thank you for your feedback and guidance Gentlemen!

[ADP3250 Scope Reading With No Probes Connected]

Thank you for another tip Attila! There is so much to learn in WaveForms, btw it is a great app.

I made some progress today. I have used different design probe and with shorted end I am getting noise just < 3 mV pk2pk. See screenshot.

Can you please let me know what are you getting on C3 on your ADP3450 with no probes connected?

[ADP3250 Scope Reading With No Probes Connected]

Thank you for your quick feedback and UI tip Attila.

I had the similar thought so I took the ADP3250 and the battery powered laptop (no charger connected only the ADP3250) to a room with no plugged electronic/electrical devices and unfortunately saw the same output. The laptop MacBook Air M2.

Any thoughts what should I try to troubleshoot?

[ADP3250 Scope Reading With No Probes Connected]

I have recently purchased a new ADP3250. I have noticed that if no probes/inputs are connected the scope still shows 3 mV peak to peak reading of what looks as a random noise. If I connect supplied probe and shorten its ends the reading jumps to approximately 20 mV. Screen shot with shorten probe leads is attached.

Is this normal? Am I doing anything wrong? It seems high to me as I cannot measure any signal below 20 mV noise level.

Thank you for any help.