Connecting Dynon EFIS with GTX327 Transponder

[marcel]

Hi All or support,
I am having a hard time to communicate my Dynon EFIS-D100 with the transponder GTX327 In order to transmit altitude. I tried two different setups but no one worked.
Any help would be appreciated.

Dynon was always with Format 4 selected.

First setup tried: ( Dynon pin 13 wired with pin 2 in transponder)

……………………………………………………………………………….
RS-232       INPUT                       OUTPUT
CHNL 1 # OFF                             Icarus Alt
CHNL 2 # GPS   (I tried to change to Icarus Alt but, for some reason, my transponder CHNL2  seems to have only the options GPS and OFF).
……………………………………………………………………..

Second  setup tried: Modified wiring ( Dynon pin 13 wired with pin 19 in transponder)

…………………………………………………………………………………
RS-232       INPUT                       OUTPUT
CHNL 1 # Icarus Alt                     Icarus Alt
CHNL 2 # OFF
…………………………………………………………………………………………………………..
RS-232
CH1 # P ALT + _ _ _ _ _ _ FT
CH2 # OFF + _ _ _ _ _ _ _
………………………………………………………………………………………………………..

I believe it should work in either channel, but I tried to connect both ways and no one worked.  Nothing is shown in the Altitude field above (only dashes).
I also tried to set the Dynon  for 10 foot and for 100 foot increments.
Thanks
Marcel  (from Brazil)

 

[jakej]

Marcel

Turn off the GTX outputs on the CHNL you're using, that should work. Icarus Alt IN is all that is required.

Jake J