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@PreludeDude
Жыл бұрын
I work on MRI machines which use a lot of RF cables to transmit power and signals. There was one instance where a simple pressure switch with unshielded 2 wire cable was causing interference with the RF cables enough that it would inhibit scanning. After changing that one cable/harness for a shielded version the issue resolved. My cable had a ring terminal for the shield drain on one end, and then the metal DB9 connector housing on the other end provided ground there.
@Wetfingers
Жыл бұрын
In military aircraft wiring, there are various methods. The two most common are actually grounding it on both ends of the harness run. Or solder sleeve it to wire/pin that later goes to ground.
@Nikoxion
Жыл бұрын
Doesn't grounding the cable shield on both ends negate the purpose? Or did I misunderstand?
@vozhdmeister5256
Жыл бұрын
@@Nikoxion Right, shields ground at one end only
@LTVoyager
Жыл бұрын
@@vozhdmeister5256No, shields should be attached at both ends pretty much always. There are very few specialized exceptions. I would post a link, but often links keep KZitem comments from getting posted. I will try to post in a second comment in case the url kills the comment. Both the military and FAA get this right, but almost everyone else gets it wrong.
@alexispavlov5170
7 ай бұрын
Grounding both sides does not make sense. Your ground isn't just a ground, it's a conductor, it conducts the main power current. When you connect both sides of a shield to the ground you split the ground current with a part of current now flowing through your shield. As any conductor the shield has a resistance, so the current will induce a voltage drop, and your shield will start being an emitter of this ground signal. So you'll get an excellent emitter very close and all along the shielded cables. That's why the shield must be grounded at one end and at the reception end. It's possible that in military domain they create separated main power and low power grounds, in which case grounding both sides to the low power ground is safe.
@-Just_Justin-
Жыл бұрын
These guys are awesome, I love their personality and skill level.
@hpa101
2 ай бұрын
Sorry it took so long for us to reply but thanks for the support mate!
@bigbothoee8617
10 ай бұрын
Lolol that brade was putting up a fight 😂
@Diabetic_Deity
2 ай бұрын
I am working on extending a wiring harness for for my Lexus gs300 and a few of the cables are shielded with what looks like a lining of aluminum foil. Then there is what I assume is a ground cable with no sheath and a normal 22awg wire that I assume must be the main cable. Could I just mimic that when I’m extending it by using the same setup but with copper tape instead and then covered with shrink wrap?
@hpa101
2 ай бұрын
We have never done that and would replace the cable as honestly, it will be much quicker and you won't be second guessing anything about that solution. Even though it's not what we would do, you can certainly try, noting you can route shielded cable through the likes of a bulkhead connector with success which is similar, in theory - Taz.
@BraydenSummerlin-f7v
7 ай бұрын
Where do we find those table clamps?
@BraydenSummerlin-f7v
7 ай бұрын
Where do we find those clamps?
@0xgggz
Жыл бұрын
How far should the shielding go on the sensor end?
@donnymcballer4659
Жыл бұрын
Great information. Had to turn on CC, though, cause I have no idea what language he’s speaking. Its very bizarre, it’s like english, but with a bunch of funny sounding gibberish nonsense words thrown into every sentence.
@hpa101
11 ай бұрын
That's exactly what it is 😎 Glad the captions helped, we refrain from throwing gibberish in those too - Taz.
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