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Page 2-2
GNS 400W Series Maintenance Manual
Rev. A
190-00356-05
2.2
FRONT PANEL LAYOUT
Figures 2-1 through 2-3 show the front bezel layout for each unit.
Figure 2-1. GPS 400W
Figure 2-2. GNC 420W
Figure 2-3. GNS 430W
2.3 UNIT
FUNCTIONS
2.3.1 GPS 400W
The GPS 400W performs the following functions:
•
Position and velocity determination using signals transmitted by Global Positioning
System (GPS) Satellites.
•
Display of the stored navigation and map database for use by the pilot/flight crew.
•
Area navigation functions using the determined position/velocity and stored navigation
data.
•
Approach navigation functions including WAAS precision approaches and the associated
database.
•
Interfacing with other flight instruments such as a moving map, autopilot, CDI/HIS
(including OBS), indicators, altitude encoder/serializer, fuel management system, and
annunciators.
•
Operation from 11 to 33 volts.
•
Terrain situational awareness (TERRAIN) functions and associated databases.
