ixIntroductionView Loaded ................................................................. 77Load to Map .................................................................. 77Airport Surface Charts ......................................................... 78Viewing Surface Charts ................................................. 78Operational Considerations ................................................. 79When to Load a Chart ................................................... 79Flying an Approach ........................................................ 79Approach to Surface Map Transitions ............................. 79Chart NOTAMS .............................................................. 79Important System Limitations ......................................... 79Invert Option ................................................................. 79Typical Operational Scenario ................................................ 80Typical Taxi Scenario ....................................................... 80Typical Take Off Scenario................................................ 80Typical Approach Scenario ............................................. 80Typical Landing Scenario ................................................ 80Radar (RADAR) Function ...............................................................81Off Mode ...................................................................... 81Standby/On Mode ........................................................ 81Test Mode .................................................................... 82Weather Mode ............................................................. 82MAP Mode .................................................................... 82Manual Gain (GWX 68 only) .......................................... 82Horizontal Mode ........................................................... 82Vertical Mode (GWX 68 and ART2000/2100 only) ......... 82Range Control ............................................................... 83Tilt Control .................................................................... 83Bearing Control (GWX 68/ART2000/2100 only) ............. 83Gain Control ................................................................. 83Hold Control ................................................................. 84Cursor Pre-Select Operation (GWX 68 and ART2000/2100 only)..................................................................................... 84Sector Scan (GWX 68 only) ............................................ 85Radar Setup Page ................................................................ 85Stabilization (STAB) ........................................................ 85Garmin GWX 68 Radar Description ..................................... 87Principles of Pulsed Airborne Weather Radar .................. 87Radar Signal Attenuation ............................................... 88Radar Signal Reflectivity ...................................................... 89Precipitation .................................................................. 89Ground Returns ............................................................. 89Angle of Incidence ......................................................... 90Operating DISTANCE ........................................................... 90MAXIMUM PERMISSIBLE EXPOSURE LEVEL (MPEL) .............. 90Antenna Tilt Setup at Cruise Altitude .................................. 91Weather Mapping and Interpretation .................................. 92Weather display Interpretation ....................................... 92Thunderstorms .............................................................. 92Tornadoes...................................................................... 94Hail ............................................................................... 94XM Satellite Radio (XM) Function ................................................95Menu Page 1 ...................................................................... 96Radio ID ........................................................................ 96Save Preset .................................................................... 97Last Channel ................................................................. 97Menu Pages 2-4 .................................................................. 97Volume ............................................................................... 98Mute ............................................................................. 98Channels ............................................................................. 98Categories .......................................................................... 99Direct Access ....................................................................... 99Activating XM Satellite Radio Services................................ 100Gather Information ...................................................... 100XM Advisory Messages ...................................................... 101System (SYS) Function ................................................................102System Nav Pages ............................................................. 102Ownship Symbol ........................................................ 102Lat/Lon Format ............................................................ 102Set Baro Correction Units(Pressure Altitude Source only) 102Set Baro Correction (Pressure Altitude Source only) ...... 102Display Latitude/Longitude Lines ................................. 102Initial En Route Zoom Scale, Initial Ground Zoom Scale, andTransition Speed..................................................... 103Slave Zoom to GPS Zoom ............................................ 103AutoLoad Electronic Charts.......................................... 103Altitude Units .............................................................. 104Map Detail .................................................................. 104System Info Page ............................................................... 104System Information ..................................................... 104Port Status ................................................................... 104Additional Features ...................................................... 104Data Link Status ......................................................... 104System Test Pages ............................................................. 105Test Pattern 1 .............................................................. 105Red, Green, Blue, White, and Black Test Patterns ......... 105Test Pattern 2 .............................................................. 106Troubleshooting .........................................................................107GDL 69/69A FIS Legends ............................................................109Sample GDL 69/69A FIS Displays................................................110Specifications .............................................................................111Physical Specifications ....................................................... 111Power ............................................................................... 111Environmental ................................................................... 111Care Information ........................................................................112Cleaning the Unit .............................................................. 112Contacting the Factory ...................................................... 112Table of Contents