Garmin GNS 480 Installation Manaul page 100

Post-Installation Configuration & Checkout
3.3.1.1.1 Flag Test
The FLAG TEST page allows testing of the TO/FROM, CDI Valid, and VDI Valid flags for both the
Main and Auxiliary CDI outputs. The NAV Superflag, GSI Superflag, and Localizer (ILS Energize) can
also be tested for the Main CDI. While on the TEST menu page, press the FLAGS line select key to
display the FLAG test page. Press the SELECT line select key to toggle between MAIN and AUX CDI
flag tests, as shown in Figure 3-19 and Figure 3-20, respectively.
When on the appropriate page turn the large, outer knob to select the flag to be tested. Then turn the
small, inner knob to change the setting of that flag. Test each setting for every flag of each CDI connected
to the GNS 480.
Press the TEST or BACK smart key to return to the Ground Maintenance Test menu.
3.3.1.1.2 CDI Deviation Test
The CDI TEST page allows testing of the CDI deviation outputs for both the Main and Auxiliary CDI
outputs. While on the TEST menu page, press the CDI TEST line select key to display the CDI TEST
Page. Press the SELECT line select key to toggle between MAIN and AUX CDI deviation tests. The
MAIN CDI test screen is shown in Figure 3-21, and the AUX CDI test screen is identical.
3-20
Figure 3-19. Main CDI Flag Test
Figure 3-20. Auxiliary CDI Flag Test
560-0982-01 Rev L GNS 480 (CNX80) Installation Manual