Fore those of you installing G3X systems, these are a few not so obvious things I took note of to maybe save you some time and frustration.
Install was single display GDU 370 with standard GSU 25 AHRS, GMU 44 magnetometer, GPT 59 Temp probe, GAD 29 GNS430 interface, and a GMC305 Flight Director. No Garmin auto pilot installed. This replaced my Dynon D100.
Installed Using Revision K
Lesson 1: For a single unit display the wiring diagram omits jumper from Pin 10 to pin 27 on the GDU 37X display unit. Your unit will not recognize anything and be blank upon power up, very discouraging moment after a lot of work. Call to Garmin and they new about it and informed me.
Lesson 2: Down load the most current software and update entire system before post flight checkout and calibration procedure. My AHRS would not store orientation. After many phone calls, finally sent picture to Garmin of the set up screen and they said it was software compatibility problem between the units. Different times of production with different software versions I guess.
Lesson 3: For those with GNS 430, the RS232 from the 430 goes to port #2 on the GDU 37X(G3X display). This is only shown in the wiring diagram referencing the 430, and is not stated in the configuration process where to me it would likely to be found.
Lesson 4: You have to tell the G3X it has a auto pilot hooked up in the set up menu, even though it doesn't, this will allow you to select between yellow aircraft symbols. I needed a yellow chevron to match the magenta Flt. director chevron steering symbol. Finally broke the code on this one. Again I have a FD installed but no Garmin auto pilot integrated into the G3X.
Lesson 5: There is but one place (in my opinion) for the Magnetometer on an RV (forward of vertical stab). I did not bother with the magnetic interference Survey. It calibrated and works fine. My old magnetometer was located there.
Lesson 6: My Dynon pitot AOA was not compatible with the G3X system. Could not get the AOA to calibrate on the last full flap stall of the procedure. This is an RV-6A, other airframes maybe different
Wiring to me was fairly straight forward, and install pretty painless by avionic standards. Support was good from Garmin, the post installation checkout could be better, but given time I sure the process will continue to cure. Love the G3X, very nice system and so far flawless!.
Install was single display GDU 370 with standard GSU 25 AHRS, GMU 44 magnetometer, GPT 59 Temp probe, GAD 29 GNS430 interface, and a GMC305 Flight Director. No Garmin auto pilot installed. This replaced my Dynon D100.
Installed Using Revision K
Lesson 1: For a single unit display the wiring diagram omits jumper from Pin 10 to pin 27 on the GDU 37X display unit. Your unit will not recognize anything and be blank upon power up, very discouraging moment after a lot of work. Call to Garmin and they new about it and informed me.
Lesson 2: Down load the most current software and update entire system before post flight checkout and calibration procedure. My AHRS would not store orientation. After many phone calls, finally sent picture to Garmin of the set up screen and they said it was software compatibility problem between the units. Different times of production with different software versions I guess.
Lesson 3: For those with GNS 430, the RS232 from the 430 goes to port #2 on the GDU 37X(G3X display). This is only shown in the wiring diagram referencing the 430, and is not stated in the configuration process where to me it would likely to be found.
Lesson 4: You have to tell the G3X it has a auto pilot hooked up in the set up menu, even though it doesn't, this will allow you to select between yellow aircraft symbols. I needed a yellow chevron to match the magenta Flt. director chevron steering symbol. Finally broke the code on this one. Again I have a FD installed but no Garmin auto pilot integrated into the G3X.
Lesson 5: There is but one place (in my opinion) for the Magnetometer on an RV (forward of vertical stab). I did not bother with the magnetic interference Survey. It calibrated and works fine. My old magnetometer was located there.
Lesson 6: My Dynon pitot AOA was not compatible with the G3X system. Could not get the AOA to calibrate on the last full flap stall of the procedure. This is an RV-6A, other airframes maybe different
Wiring to me was fairly straight forward, and install pretty painless by avionic standards. Support was good from Garmin, the post installation checkout could be better, but given time I sure the process will continue to cure. Love the G3X, very nice system and so far flawless!.
