I received my backup AHAHRS from Dynon after a repair. This is the 201 backup unit. Installed per instructions. Immediately received pitch error message. 201 unit does not agree with 200 primary ADAHRS! Not sure where to go with this one. Units are mounted with Dynon stacking mount bracket. 201 unit is mounted on top of primary. There was no need to move or touch primary unit. I did recheck mounting angle of ADAHRS with digital protractor. On the ground the units have a 4 degree angle that matches the 4 degree longeron. Did the on ground and in air compass calibrations. Any thoughts?
