Quote:
Originally Posted by Piotrsko
pretty much if you want to stop receipt of EMR, then sheilding on the pairs, then the bundle sheilded with a foil or a braid and tied to different GROUNDS (not negative battery) at one end only.
Not an instrumentation super, but instrumentation Tech at Edwards AFB rocket site thruster test lab.
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What I'm told pretty much matches what you listed. individual shields, plus an overall shield.
I have to ask about the different grounds, though. With an isolated switching power supply .. which shields are connected to which grounds? And if the PS negative is not one of them .. how do you 'make' a signal ground?
Our instrument supervisor came up through the ranks, so he's the most experienced tech I know. He has explained grounds to me many times .. Obviously I'm a slow learner. I just don't seem to be able to keep it straight.