Garmin GMU11 - Attitude data error

Hello
My GMU11 is seems to be working properly, as data rate error is 0, and is enlisted in the system information with a green arrow.
However, I can not calibrate heading.
when trying to calibrate the magnetometer, I receive "Attitude data error" see enclosed pic.

Anyone encountered such issue? any suggestions?

Thanks!
Oren

Yes

Yes I had that error too. I needed to calibrate the gsu25 and match the calibration of the gdu460 and G5 attitude ( had to calibrate them at the same time with plane level.)

Thanks so much!
So, I am missing another menu calibration button?

yes

oren_rokach said:

Thanks so much!
So, I am missing another menu calibration button?

Click to expand...

It is in the G3X manual in the configuration section. I remember I had to get the G3X calibrated before doing the GMU11. And I was also getting a error because my G5 and GDU460 attitude didnt match.

Thanks John!