Garmin G500 Pilots Guide - Page 211

Foreword Sec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Features 1) While viewing the Weather Radar page of the Wx page group, press the MENU key. 2) To activate or deactivate Weather Alerts, turn the large or small MFD knob to highlight either "Enable Weather Alert" or "Inhibit Weather Alert." Activating and deactivating will also enable or inhibit the alert on the MFD. 4.8.7 Ground Mapping and Interpretation A secondary use of the weather radar system is for the presentation of terrain. This can be a useful tool for verifying aircraft position. A "picture" of the ground is represented much like a topographical map that can be used as a supplement to the navigation map on the MFD. Ground Map mode uses a different gain range than Weather mode. Different colors are also used to represent the intensity levels. The displayed intensity of ground target returns are defined in the following table. Use of the GAIN and TILT controls will help improve contrast so that specific ground targets can be recognized more easily. As previously discussed, the type and orientation of the target in relation to the aircraft affects the intensity displayed. When the weather radar system is in the either the Weather or Ground Map mode, the system automatically switches to Standby mode. Ground Map Mode Color Intensity Black 0 dB Light blue > 0 dB to < 9 dB Yellow 9 dB to < 18 dB Magenta 18 dB to < 27 dB BLUE 27 dB and greater Table 4-18 Ground Target Return Intensity Levels Sec 5 Additional Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index 190-01102-02 Rev. B Garmin G500 Pilot's Guide 4-83