Van's Air Force
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Garmin 480 -> 327 Settings
- Thread starter Jim P
- Start date
Rick_A
Well Known Member
Need help w/ Garmin 480 & GTX 327 config
I have GRT Horizon, GNS 480 & GTX 327. I had the 480 & 327 talking to each other at one time but they're not working now. The 480 displays a message that the Transponder failed. I'm not getting a Pressure Altitude reading on the 327 and the squawk code is not displayed on the 480.
Here are the relavent setting that I've configured:
GRT set to Fuel/Air Data (Z format) , 9600 baud
GNS 480 Serial Port 6
RX = GTX32 baud = 9600
TX = GTX32 baud = 9600
GTX 327 RS232
Chan Input Output
1 REMOTE REMOTE
2 OFF OFF
Will setting Chan 2 to FADC W/ALT help? (on Input, Output or both?)
Any other suggestions?
Is there a way to see the altitude data that the 480 is getting from the EFIS?
I have GRT Horizon, GNS 480 & GTX 327. I had the 480 & 327 talking to each other at one time but they're not working now. The 480 displays a message that the Transponder failed. I'm not getting a Pressure Altitude reading on the 327 and the squawk code is not displayed on the 480.
Here are the relavent setting that I've configured:
GRT set to Fuel/Air Data (Z format) , 9600 baud
GNS 480 Serial Port 6
RX = GTX32 baud = 9600
TX = GTX32 baud = 9600
GTX 327 RS232
Chan Input Output
1 REMOTE REMOTE
2 OFF OFF
Will setting Chan 2 to FADC W/ALT help? (on Input, Output or both?)
Any other suggestions?
Is there a way to see the altitude data that the 480 is getting from the EFIS?
A quirk about the 480 is that it MUST be very securly tightened into the tray. It is much more sensitive than any other box that I've got or seen. I had a similar problem and was able to wiggle the box and get another turn or two out of the screw and problem went away.
Bob
Bob
Rick_A
Well Known Member
Got it working - new parameter
Bob, John Stark also suggested re-seating it. He suggested doing it more forcefully the you might think is reasonable and to do it many times - but this did not help.
John also suggested calling Garmin AT support, which I did - and they solved the problem very quickly.
Earlier this week I upgraded the GNS 480 software to V3.2 (however, I think I was missing the altitude data before I did the upgrade). There is a new undocumented parameter in V3.2 software.
In Maintenance Mode, select "MISC". The new parm is ADC. The default is IGNORE. I changed it to USE and bingo - the problem was fixed.
Bob, John Stark also suggested re-seating it. He suggested doing it more forcefully the you might think is reasonable and to do it many times - but this did not help.
John also suggested calling Garmin AT support, which I did - and they solved the problem very quickly.
Earlier this week I upgraded the GNS 480 software to V3.2 (however, I think I was missing the altitude data before I did the upgrade). There is a new undocumented parameter in V3.2 software.
In Maintenance Mode, select "MISC". The new parm is ADC. The default is IGNORE. I changed it to USE and bingo - the problem was fixed.
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