How can I measure the noise on my AC mains with a 2ch oscilloscope?


I’m not an EE so although I have some nice test equipment I need help. Here is the problem, the AC Mains are 120 vac but I’m trying to measure the noise on the AC signal , millivolts. I’d like to answer two questions how bad is my power and second  does my isolation transformer make a difference.

 

thanks for the help 

badbruno

Like Jason said.  Power doesn't matter.  Hook it up to a honda generator.  It'll be fine.  🤣

It’s surprising that Honda didn’t have a booth at Axpona.

Eric… I learned what OP means and that’s relevant! Perfect.

It’s amazing how much can be learned by reaching out to folks, and with a little bit of logic and some engineering, and like my Dad thought me … he would say well it’s already broke so we might as well try to fix it.

ok so I now have a fully active 3-way and subs open baffle system that I have turned . Convolution filters running in Roon with 132k taps to exploit digital processing!! Measurements with Earthworks Mic.

the amps I designed from Class D Pascal Audio modules … it’s amazing how critical it is the have amps that deliver Slew rates to follow the instruments!

Eric I try not to let “knuckleheads” get in the way of a hobbie !! Thank you for these links 

cheers 

I just installed a PS Audio Power Plant 15 yesterday and has made a HUGE improvement in my listening enjoyment. I was using a APC H15 power conditioner previously with good results but as soon as I lit up the PP15...bruh. Clarity, detail and dimensionality were significantly improved. Slam dunk purchase for me. PS Audio is selling them a 20% discount r/n on their website. 

pics:

https://drive.google.com/drive/folders/1sL_W8ctffvFCAiAGsrzazn_S2H2I6fo-?usp=sharing

@badbruno If you are asking me: The PP15 max output is 1500W. If you need more, they have the PP20. I'm running everything off my PP15 and only at 40% load.

Also: The reason I upgraded is b/c I noticed the system sounded better at different times of the day.