Equipment Setup And Configuration; Figure 3-1. Groundm - Garmin GNS 480 Installation Manaul

Post-Installation Configuration & Checkout

3.2 Equipment Setup and Configuration

Prior to system operation, the GNS 480 must be configured for the particular installation using the setup
functions provided.
The system setup and checkout functions are reached in the Ground Maintenance mode of the GNS 480.
This mode should not be accessed during flight. The Ground Maintenance mode is reached by pressing the
line select keys 1, 4, and MENU/ENTER in sequence immediately after the GNS 480 initialization is
complete and before any other bezel keys on the GNS 480 are pressed. Line select key 1 is the top line
select key, line select key 4 is the fourth key down, and MENU/ENTER is the lower most key below the
line select keys. After pressing the keys, wait for the GNS 480 to restart into Ground Maintenance mode.
The Ground Maintenance mode default menu display (SETUP) is shown in Figure 3-1. Pressing the
SETUP, TEST or INPUT smart keys along the bottom allows selection of that function. Pressing the
EXIT smart key will return the GNS 480 to the Airborne mode.
main page
second page
Figure 3-1. Ground Maintenance Mode Display
3-2 560-0982-01 Rev L GNS 480 (CNX80) Installation Manual