Garmin G3X Touch Installation Manual page 484

5. Ensure that aircraft and ADAHRS comply with all on-screen instructions, press the START
softkey.
NOTE
Per the following figure, GSU 73 units must have the ADAHRS pitch and roll within 3
degrees of level, GSU 25 units must have the ADAHRS pitch and roll within 30 degrees of
level.
6. "Pitch/Roll Offset Calibration in Progress" appears on the display along with calibration
information. The GSU 73 pitch/roll offset procedure completes in a few seconds. The GSU 25
pitch/roll offset procedure has a 30 second countdown timer that resets when the aircraft moves.
190-01115-01 G3X/G3X Touch Installation Manual - GDU 37X Config and Post Install Checkout
Rev. AC Page 33-14