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nuckolls.bob(at)aeroelect
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 Posted: Wed Mar 15, 2017 10:48 am Post subject: Garmin magnetometer installation considerations |
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At 09:38 AM 3/15/2017, you wrote:
| Quote: | | I'm ready to run wiring in my Bearhawk wings. The only place that remotely meets Garmin's requirements for magnetometer mounting is in the wing tip. The installation manual says that if mounted in a metal wing, there should not be local grounding, all wiring should be twisted pairs. I assume I can use a battery drill to make twisted pairs. How tightly should the wires be twisted (turns/inch etc). The only logical place to run the wiring for the magnetometer is in the same conduit with the rest of the wiring. Does this present a problem? |
How many pairs
Bob . . .
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stein(at)steinair.com
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| Posted: Wed Mar 15, 2017 11:37 am Post subject: Garmin magnetometer installation considerations |
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Garmin doesn’t recommend open non-shielded wire for the GMU (twisted or not). You’ll note from the install manual is specifically calls out a 2 conductor shielded wire and a 3 conductor shielded wire (one of each) run to the GMU. This is the simplest and cleanest way to do the install as well…the wires are already twisted, already shielded and can be run together. Look at page 24-5 in the install manual (rev. AA) for details. The power, Ground and RS-232 share the three conductor wire with the shield getting sunk to the signal ground on the GMU. I’d recommend just following that install guide….after hundreds of these we’ve wired this way there hasn’t been any issues yet.
Cheers,
Stein
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III
Sent: Wednesday, March 15, 2017 1:38 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: Garmin magnetometer installation considerations
At 09:38 AM 3/15/2017, you wrote:
| Quote: |
I'm ready to run wiring in my Bearhawk wings. The only place that remotely meets Garmin's requirements for magnetometer mounting is in the wing tip. The installation manual says that if mounted in a metal wing, there should not be local grounding, all wiring should be twisted pairs. I assume I can use a battery drill to make twisted pairs. How tightly should the wires be twisted (turns/inch etc). The only logical place to run the wiring for the magnetometer is in the same conduit with the rest of the wiring. Does this present a problem? |
How many pairs
Bob . . .
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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