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General Mach Discussion / Re: Help with noise problem
« on: February 14, 2017, 07:31:22 AM »Quote
As soon as the XLR connector (with the sield connected to it) is in contact with the metal case and therefore with the star ground, the Y axis gains steps.
From what you have described it sounds like you have created an earth loop.
All shields should be connected to the Star Earth at the controller end only.
Tweakie.