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Help with Gns 480 Century HSI

 
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BGray(at)glasair.org
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PostPosted: Mon Jul 04, 2011 5:23 pm    Post subject: Help with Gns 480 Century HSI Reply with quote
If the GNS 480 was the only item removed from your panel, I’d start with the connectors and pins used for that unit.

Bruce
WWW.Glasair.org

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recapen(at)earthlink.net
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PostPosted: Mon Jul 04, 2011 5:23 pm    Post subject: Help with Gns 480 Century HSI Reply with quote
Dave,

I have a similar setup…NSD1000 MX20 SL70 PSE7000MS( SL15Equiv) – but Garmin 420 instead….
Let me look through my stuff and give you a couple of things to check out…..

Meanwhile, did it ever work properly? If not – there will be a different set of things to check….

Ralph

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of David Burnham
Sent: Monday, July 04, 2011 6:17 PM
To: rv-list(at)matronics.com; avionics-list(at)matronics.com
Subject: Help with Gns 480 Century HSI


I have a CNX-80 - GNS480 witht he following other units. Century 1000 HSI, MX20, SL15.

I had the GNS 480 software upgrade, since then I am not getting any CDI function on the HSI. the VDI etc, still works, but not CDI.

I have checked my setup and all seems OK to me - but I may be missing something.

Also, Altitude does not display on MX 20 - have an SL70 remote transponder - output from GNS 480 is showing correct altitude.



Any GNS 480 experts, help would be appreciated. Avionics shop where I had the upgrade done is not homebuilder friendly.



Dave Burnham

RV6A - N64FN - flying since 2006
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recapen(at)earthlink.net
Guest
PostPosted: Tue Jul 05, 2011 4:19 am    Post subject: Help with Gns 480 Century HSI Reply with quote
The MX20 has a serial port definition that needs to be configured for altitude input. I had a similar problem when I swapped out my GX60 for my 420W…..the altitude signal needs to come directly as serial input either from the encoder or transponder (mine’s from the transponder)…previously the GX60 would do it but the 420W did not…..caused a minor rewiring change. You may have a similar situation…….

As for the CDI, there are essentially two wires that provide the L/R signal to the NSD1000…hence the ‘did it ever work’ question.

I have all of the wiring diagrams for everything except the CNX-80 – GNS480. If I can get the installation manual for that, I can tell you what pins to shoot for continuity.

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Ralph E. Capen
Sent: Monday, July 04, 2011 9:23 PM
To: rv-list(at)matronics.com
Subject: RE: Help with Gns 480 Century HSI



Dave,

I have a similar setup…NSD1000 MX20 SL70 PSE7000MS( SL15Equiv) – but Garmin 420 instead….
Let me look through my stuff and give you a couple of things to check out…..

Meanwhile, did it ever work properly? If not – there will be a different set of things to check….

Ralph

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of David Burnham
Sent: Monday, July 04, 2011 6:17 PM
To: rv-list(at)matronics.com; avionics-list(at)matronics.com
Subject: Help with Gns 480 Century HSI


I have a CNX-80 - GNS480 witht he following other units. Century 1000 HSI, MX20, SL15.

I had the GNS 480 software upgrade, since then I am not getting any CDI function on the HSI. the VDI etc, still works, but not CDI.

I have checked my setup and all seems OK to me - but I may be missing something.

Also, Altitude does not display on MX 20 - have an SL70 remote transponder - output from GNS 480 is showing correct altitude.



Any GNS 480 experts, help would be appreciated. Avionics shop where I had the upgrade done is not homebuilder friendly.



Dave Burnham

RV6A - N64FN - flying since 2006
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