1-3190-01150-02 Rev. J Garmin G500H Pilot’s GuideForewordSec 1SystemSec 2PFDSec 3MFDSec 4HazardAvoidanceSec 5AdditionalFeaturesSec 6Annun.& AlertsSec 7SymbolsSec 8Glossary Appendix AAppendix BIndexEach LRU has a particular function, or set of functions, that contributes to thesystem’s operation.1.1.1.1 GDU 620The GDU 620 has dual VGA (640 x 480 pixels) 6.5 inch LCD displays. Theright side of the GDU is a PFD and the left side is the MFD. In some models orinstallations, the PFD and MFD and their controls are switched to the other side.The MFD shows a moving map, flight plan, weather, and other supplementaldata. The PFD shows primary flight information, in place of traditional pitot-static and gyroscopic systems and also provides an HSI for navigation.Figure 1-2 GDU 620 PFD and MFD1.1.1.2 Air Data Computer (ADC)The Air Data Computer (ADC) compiles information from the pitot/staticsystem and an Outside Air Temperature (OAT) sensor. The ADC providespressure altitude, airspeed, vertical speed, and OAT information to the G500Hsystem. The ADC communicates with the GDU 620 and AHRS using an ARINC429 digital interface.Figure 1-3 Air Data Computer
