Garmin G3X Installation Manual page 612

4. Use the Touch Panel or a Move Selector Knob to select Magnetic Interference Test.
5. Ensure that the aircraft has been properly prepared per the on-screen instructions. See
for a sample test sequence. Press the Start button to begin the test.
190-01115-01 G3X/G3X Touch Install Manual - GDU 45X/46X Config and Post Install Checkout
Rev. AA
Table 32-4
Page 32-17