Hello -
I am installing a Dynon D100/HS34 version 4, Garmin CNX-80(GNS-480) version 2.00, and a Garmin GTX-327 version 2.09 in my new build RV-4.
After some wiring frustration (the arinc 429 install diagram for the HS34 to GNS-480 isn't really correct), I finally have all the units talking to each other and working GREAT!!!
Except (there's always that "except" ) -
The CNX-80 is giving me a no valid altitude message.
By design(for some unknown reason) the GTX-327 doesn't pass altitude info to the CNX-80. The GTX-327 is receiving serial altitude info from the D100 format 4 and is working fine.
The CNX-80 says it is supposed to accept arinc 429 data labels 203(pressure alt) and 204(baro corrected alt). And from what I understand the HS34 should be sending those labels....
Since all other arinc 429 labels are working great between the HS34 and CNX-80 I'm wondering if those two labels are actually being sent or being sent properly?
The appendix of the CNX-80 install lists acceptable altitude input devices (Dynon is not one) I don't know if the CNX-80 is filtering arinc equipment id labels or not...
I also don't know if the HS34 is even sending equipment id labels in the format string.
I'm just confused as to why I'm getting an invalid altitude message. :-?
The CNX-80 will accept serial altitude from the D100 in format 1 but then the GTX-327 has to go without...
I could get around this by purchasing a Dynon serial-to-grey code converter and paralleling the D100 format 1 serial alt info between the CNX-80 and the converter and feed parallel info to the GTX-327 but I'd really rather do this as a last resort if I can't figure out why the CNX-80 isn't accepting label 203/204....
Any ideas?
I am an electronic engineer in the avionics field and am very familiar with the arinc 429 spec from the hardware and software end, I could probably provide gobs more technical info on this problem if you need or want....
BTW, the D100 split screen with the HSI and dual needle pointers and feedback to the CNX-80 is REALLY cool!!! ;D
Thanks -
~Terry~
I am installing a Dynon D100/HS34 version 4, Garmin CNX-80(GNS-480) version 2.00, and a Garmin GTX-327 version 2.09 in my new build RV-4.
After some wiring frustration (the arinc 429 install diagram for the HS34 to GNS-480 isn't really correct), I finally have all the units talking to each other and working GREAT!!!
Except (there's always that "except" ) -
The CNX-80 is giving me a no valid altitude message.
By design(for some unknown reason) the GTX-327 doesn't pass altitude info to the CNX-80. The GTX-327 is receiving serial altitude info from the D100 format 4 and is working fine.
The CNX-80 says it is supposed to accept arinc 429 data labels 203(pressure alt) and 204(baro corrected alt). And from what I understand the HS34 should be sending those labels....
Since all other arinc 429 labels are working great between the HS34 and CNX-80 I'm wondering if those two labels are actually being sent or being sent properly?
The appendix of the CNX-80 install lists acceptable altitude input devices (Dynon is not one) I don't know if the CNX-80 is filtering arinc equipment id labels or not...
I also don't know if the HS34 is even sending equipment id labels in the format string.
I'm just confused as to why I'm getting an invalid altitude message. :-?
The CNX-80 will accept serial altitude from the D100 in format 1 but then the GTX-327 has to go without...
I could get around this by purchasing a Dynon serial-to-grey code converter and paralleling the D100 format 1 serial alt info between the CNX-80 and the converter and feed parallel info to the GTX-327 but I'd really rather do this as a last resort if I can't figure out why the CNX-80 isn't accepting label 203/204....
Any ideas?
I am an electronic engineer in the avionics field and am very familiar with the arinc 429 spec from the hardware and software end, I could probably provide gobs more technical info on this problem if you need or want....
BTW, the D100 split screen with the HSI and dual needle pointers and feedback to the CNX-80 is REALLY cool!!! ;D
Thanks -
~Terry~