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Old 10-20-2013, 12:46 PM
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JimN JimN is offline
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Originally Posted by David Analog View Post
Can't answer a poorly constructed question.
But use the transformer? Absolutely, as a test at minimum.
The shielding function will still be intact just as it is with a standard RCA ground loop isolator. It simply keeps DC (that may be modulated, ie; noise) from passing down the shield from one device to another.
Beside cost, if this is a better way to shield, why don't the manufacturers break the shield and use a small value cap, in series? It would still act as an AC/RF shield, but there would be no DC connection (unless they're using the shield as THE ground).

I don't remember the last time I heard of a shield that was acting to cause this kind of problem when the cabling was routed correctly (away from major noise sources).
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