Pilot's Guide

4-3190-01150-02 Rev. F
Garmin G500H Pilot’s Guide
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
4.2 Terrain Scale
The Terrain Scale option in the Map page group selects whether the Terrain
Scale is shown on the Navigation Map. The Terrain scale will be located on the
right side of the display.
Figure 4-1 Terrain Scale
Color Description
Black
Terrain is more than 500 ft below the aircraft.
Green
Terrain is between 250 ft below and 500 ft below the aircraft.
Yellow
Terrain is between 250 ft below and 0 ft above the aircraft.
Orange
Terrain is between 0 ft above and 250 ft above the aircraft.
Red
Terrain is more than 500 ft above the aircraft.
Table 4-2 Terrain Scale Color Codes
4.3 Terrain Proximity
Garmin Terrain Proximity is a non-TSO-C194-certified terrain awareness
system provided as a standard feature of GDU 620 to increase situational
awareness and help reduce controlled flight into terrain (CFIT). Terrain may be
displayed on the Map page group Navigation Map and Terrain pages.
Terrain Proximity uses information provided from the GPS receiver to
provide a horizontal position and altitude. GPS altitude is derived from satellite
measurements. GPS altitude is converted to a Mean Sea Level (MSL)-based
altitude (GPS-MSL altitude) and is used to determine Terrain alerts. GPS-MSL
altitude accuracy is affected by factors such as satellite geometry, but it is not
subject to variations in pressure and temperature that normally affect pressure
altitude devices. GPS-MSL altitude does not require local altimeter settings to
determine MSL altitude. Therefore, GPS altitude provides a highly accurate and