Feet Calibration Screen - Garmin G1000 Maintenance Manual

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9. After communication with the GDC 74A is established, the 'Full Backup' screen appears
while a full backup of the original unit setting is saved to a file named
BKUP_(serial_num)_YYYYMMDD_ HHMMSS.txt. This file can be used (by Garmin) to
restore the unit to the original settings if necessary.
10. After the full backup file has been created, the 'Prepare To Take Measurements' screen
appears while the program retrieves the unit type from the GDC 74A.
11. After the unit type has been determined, the 'Set altitude to 0 ft' screen (Figure 5-8)
appears.
12. Per the on-screen instructions, set the pressure control system to a pressure altitude of
0 feet.
13. Allow the on-screen altitude reading to stabilize, then click 'OK'.
G1000 System Maintenance Manual
190-00907-00
Figure 5-7. Serial Port Pull-down List
Figure 5-8. 0 Feet Calibration Screen
Page 5-57
Rev. B