VHF issue |
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Tiptel
Newbie Joined: 01 Jan 2015 Location: EDFC Status: Offline Points: 5 |
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Posted: 15 Dec 2015 at 6:09am |
Hello! I have a Problem with only one of my double IFD440s: Sometimes I can see a red "x" at VHF on the system status page. I can't find any problems with the radio function, but what's the matter for the "x"? ... and I'm not very often in the maintenance mode. Sometimes it's there, sometimes not... Best regards, Heiko |
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edanford
Senior Member Joined: 21 Nov 2011 Location: Austin Tx Status: Offline Points: 116 |
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I saw the same thing yesterday when looking over my screens after 10.1.1.0 upgrade
No VHF issues I am aware of |
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Ed
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AviJake
Admin Group Joined: 26 Mar 2009 Location: Lincoln MA Status: Offline Points: 2815 |
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You guys doing this with your prop spinning and all electrical buses on or is this battery only behavior? The point of the question is a matter of input voltage to the IFD.
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Steve Jacobson
sjacobson@avidyne.com |
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edanford
Senior Member Joined: 21 Nov 2011 Location: Austin Tx Status: Offline Points: 116 |
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I was at about 21 Vdc running off external bat I have for playing with avionics.
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Ed
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Tiptel
Newbie Joined: 01 Jan 2015 Location: EDFC Status: Offline Points: 5 |
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With full battery (24 V) and without engine running. Thought I could verify an influence of my battery minder, but not allways.
Software version 10.1.0.0 Btw: Absolut great units! Edited by Tiptel - 15 Dec 2015 at 3:09pm |
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AviJake
Admin Group Joined: 26 Mar 2009 Location: Lincoln MA Status: Offline Points: 2815 |
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In the absence of any other data, I suspect you are hitting a voltage limit (on the low end). It's worth noting the behavior in a "full-up" airplane with prop spinning and all buses on. I bet everything is just fine in that case.
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Steve Jacobson
sjacobson@avidyne.com |
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Tiptel
Newbie Joined: 01 Jan 2015 Location: EDFC Status: Offline Points: 5 |
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Will check that - thanks for your fast replay!
Do you need log files? Edited by Tiptel - 15 Dec 2015 at 3:18pm |
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brou0040
Senior Member Joined: 13 Dec 2012 Location: KIYK Status: Offline Points: 720 |
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AviJake, it sounds like the people that saw the x's did not notice any radio issues. Can you tell us what if any reduced functionality that x indicates? Do the x's correlate with the voltage limits of the table that describes what shuts down at different voltage levels?
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