Chris Prosser
Member
Hi Folks,
Love the forum. I've been finding myself loving the mixture of helpfulness and measurement, reading late into the night.
So I want to talk about ground loops, and not this kind of ground loop
I've been struggling with noise on my laptop system for years. I could largely ignore it because if I moved the cables (aka antenna) just right, it wouldn't bother me. But I just picked up a Topping D10 and the display on it kicks out a ton of noise. On the plus side, it was loud enough that it made troubleshooting possible. After much unplugging of stuff I isolated the ground loop as going from my ungrounded laptop, through the mini-displayport cable to my grounded monitor on one side, and then via usb to my grounded audio equipment on the other. My old DAC that I was hoping to retire (a Grant Fidelity TubeDAC-11) has TosLink, and so does my laptop, so $6 later and a new piece of fiber and that actually fixes it for the first time in years!
But...new gear!
It looks like I need to get a USB Isolator to block the ground loop to use the D10. I'm not terribly against the idea as I do electronics and have a USB mixed dso that I always use hunched over my laptop not plugged into anything to avoid this exact problem. My back would really prefer my external monitor .
It looks like they all use a similar Analog Devices chips. Any suggestions on what to look for?
Cheers,
Chris
Love the forum. I've been finding myself loving the mixture of helpfulness and measurement, reading late into the night.
So I want to talk about ground loops, and not this kind of ground loop
I've been struggling with noise on my laptop system for years. I could largely ignore it because if I moved the cables (aka antenna) just right, it wouldn't bother me. But I just picked up a Topping D10 and the display on it kicks out a ton of noise. On the plus side, it was loud enough that it made troubleshooting possible. After much unplugging of stuff I isolated the ground loop as going from my ungrounded laptop, through the mini-displayport cable to my grounded monitor on one side, and then via usb to my grounded audio equipment on the other. My old DAC that I was hoping to retire (a Grant Fidelity TubeDAC-11) has TosLink, and so does my laptop, so $6 later and a new piece of fiber and that actually fixes it for the first time in years!
But...new gear!
It looks like I need to get a USB Isolator to block the ground loop to use the D10. I'm not terribly against the idea as I do electronics and have a USB mixed dso that I always use hunched over my laptop not plugged into anything to avoid this exact problem. My back would really prefer my external monitor .
It looks like they all use a similar Analog Devices chips. Any suggestions on what to look for?
Cheers,
Chris