boogie:
The amplitude of USB noise varies significantly from port to port on my machine, seemingly independent of USB version (2.0 vs 3.0).Any idea what is causing this?
And what measures can be taken to reduce USB noise?celem's post may suggest this behavior results from powering and serial port communication over the USB cable.
crocket's post may suggest this behavior results from other USB devices residing on the same USB bus.I have tested multiple USB cables and compared across USB versions; no 60 hz line noise is showing in the frequency spectrum.
Thanks in advance!
Give us a little hint of what you are writing about!!! What machine? What do you consider "noise"? Why is it a problem?
Paul