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09-09-2015, 09:03 PM
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Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
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intercom noise
Hi Robert & all, - it wasn't that easy, -I pulled pins 2 & 20 on the fuselage plug, & there was no difference in the noise at all! After a week of all sorts of theories & head scratching, I pulled the music input pins right at the intercom (pins 18 &19): Aaah, absolute silence, intercom, radio etc all working beautifully! So, was the noise being induced in the Van's connector box, or were pins 2 & 20 on the fuselage plug not the correct ones? Being a computer dummy, I have not been able to see the circuit diagram, despite following the Van's instructions carefully.. Anyway the final result is excellent: clear radio & intercom, & NO noise... Cheers, DEAN....
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09-09-2015, 10:16 PM
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Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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Good information, Dean. I still don't know what caused the noise, only what finally made it stop after weeks of frustrating trial and error experimenting. Do you have the conversion harness wiring or the later Skyview wiring?
__________________
rgmwa
RV-12LR 912ULS
120346
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09-10-2015, 04:23 AM
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Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
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intercom noise
G'day Robert, I, (luckily I think) have the later Skyview 1000 system.... Cheers. DEAN....
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09-10-2015, 05:46 AM
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Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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Thanks Dean. I have the D180/Skyview conversion harness so that may explain why the pins I isolated didn't work in your case. At least you've fixed it, and hopefully the information may help others, although it doesn't seem to be a common problem in the RV-12 community. Maybe it's got something to do with living on the bottom of the planet. 
__________________
rgmwa
RV-12LR 912ULS
120346
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03-05-2016, 10:32 PM
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Join Date: Dec 2013
Location: Moorpark, CA
Posts: 157
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We were chasing this very issue for the last several weeks (Skyview/Flightcom 403/SL40).
First I tried pulling pins 18 & 19 from the intercom connector, which worked besutifully until it became evident that this also disabled all of the Dynon aural alerts.
I spent a bit of time looking through wiring diagrams until I stumbled upon the page describing the initial Dynon audio setup. Eureka! Spent an hour or so fine tuning the EFIS (L) and EFIS (R) pots on the side of the AV5000, and I'm quite happy with the result.
The book actually has you practice adjusting the pots using an iPod connected to the aux input to get a feel for adjusting them before adjusting the EFIS L&R pots.
The manual specifically mentions the noise generated but the Skyview, and how we need to turn down the EFIS audio pots on the AV5000 until we can hear the aural alerts, but not the background noise. The pots have a 25 turn range, so finding the sweet spot took some time. Eventually, I gave up and turned the pots fully CW until they bottomed, and worked them out 1 turn at a time until I had audio again. The rest of the time was spent fine tuning them so I had the same volume in each ear (I had to flip a dip switch to get stereo audio in my headset. Once done, I went back to mono, as I use the headset in other airplanes that aren't wired for stereo audio).
Getting at the pots is a bit of a challenge,and I had to pull the glare shield to gain access. They're located on the right side of the AV5000. One could pull the screen instead, but you'd have to reconnect it every time to check the audio levels. I had to adjust the pots by feel, but it's doable, if not necessarily easy.
Now I can fine tune the Dynon alerts in the software and have essentially no background noise in the headsets.
Hope this helps someone.
Last edited by Cannon : 03-05-2016 at 10:37 PM.
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03-08-2016, 10:23 AM
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Join Date: Sep 2015
Location: Boca Raton, FL BCT
Posts: 133
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Where in the manual(s) did you find the instructions for the setup of the pots on the SV5000? I've been searching the Skyview installation manual but have not found the instructions you reference. Thanks for the help.
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Steve at LNA now after BCT tripled rent!
Flying a built ELSA
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03-08-2016, 11:22 AM
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Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,070
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It is not in the SkyView manual because the AV-50000A is made by Van's .
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Joe Gores
RV-12 Flying
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03-08-2016, 10:20 PM
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Join Date: May 2008
Location: Hillsboro, OR
Posts: 159
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Quote:
Originally Posted by n74846
Where in the manual(s) did you find the instructions for the setup of the pots on the SV5000? I've been searching the Skyview installation manual but have not found the instructions you reference. Thanks for the help.
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Take a look at 42D-30. http://www.vansaircraft.com/pdf/revi...ection_42D.pdf
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03-09-2016, 03:31 AM
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Join Date: Dec 2013
Location: Moorpark, CA
Posts: 157
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Sorry, been a lurker and forgot to check this thread.
Slane is correct, page 42D-30.
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03-09-2016, 06:56 AM
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Join Date: Sep 2015
Location: Boca Raton, FL BCT
Posts: 133
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Thanks, been looking in the wrong place.
__________________
Steve at LNA now after BCT tripled rent!
Flying a built ELSA
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