nuckolls.bob(at)aeroelect
Guest
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 Posted: Fri Jan 23, 2009 12:11 pm Post subject: Will other wiring interfere with Magnetometer? |
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At 04:46 PM 1/22/2009, you wrote:
| Quote: |
Getting ready to pull a twisted pair from panel to position lights in tips.
I was measuring for how long to cut the wires and I had a couple of
questions:
Does the pair of wires feeding each nav light need to be twisted the entire
length from panel to light or just some distance before and after as it
passes the magnetometer?
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I don't have first-hand experience with chasing a magnetometer
interference problem. I DID work a case where the B&C SD-20
was swinging a glareshield mounted compass several degrees.
The problem became un-observable when the compass was moved
vertically about 10" to a location on the windshield.
This example speaks to the fact that magnetic interference
coupling falls off very rapidly with increase of distance
between antagonist and victim. As long as your potential
emitters of undesirable magnetics are say 2 feet or further
away from the magnetometer, it's unlikely that you'll see
any problems.
| Quote: | And since my leading edge landing/taxi lights (located several feet inboard)
will be grounded locally can I shorten the length of the nav light ground
wire and ground to the airframe at the same place? And then twist from
there to the nav light?
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That ought to work.
Bob . . .
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