Garmin G1000 NXi Pilot's Manual page 39

SBAS SELECTION (SBAS SOFTKEY SELECTED)
In most situations, all SBAS providers should remain enabled. However, in certain situations such as when
the aircraft is outside or on the fringe of the SBAS coverage area, it may be desirable to disable EGNOS,
WAAS, GAGAN, or MSAS (although it is not recommended). When disabled, the 'SBAS' Field in the 'GPS
Status' Box indicates Disabled. There may be a small delay for the 'GPS Status' Box to be updated upon SBAS
provider enabling/disabling.
Disabling SBAS:
1) Select the 'Aux - GPS Status' Page.
2) If necessary, press the SBAS Softkey.
3) Push the FMS Knob, and turn the large FMS Knob to highlight 'EGNOS', 'MSAS', 'WAAS', or 'GAGAN'.
4) Press the ENT Key to uncheck the box.
5) Push the FMS Knob to remove the cursor.
GPS SATELLITE SIGNAL STRENGTHS
The 'Aux - GPS Status' Page can be helpful in troubleshooting weak (or missing) signal levels due to poor
satellite coverage or installation problems. As the GPS receiver locks onto satellites, a signal strength bar is
displayed for each satellite in view, with the appropriate satellite ID number below each bar. The progress of
satellite acquisition is shown in three stages, as indicated by signal bar appearance:
» No bar—Receiver is looking for the indicated satellite
» Hollow bar—Receiver has found the satellite and is collecting data
» Cyan bar—Receiver has collected the necessary data and the satellite signal can be used
» Green bar—Satellite is being used for the GPS solution
» Checkered bar—Receiver has excluded the satellite (Fault Detection and Exclusion)
» "D" indication—Denotes the satellite is being used as part of the differential computations
Each satellite has a 30-second data transmission that must be collected (signal strength bar is hollow) before
the satellite may be used for navigation (signal strength bar becomes solid).
190-02177-02 Rev. A
Garmin G1000 NXi Pilot's Guide for the Cessna NAV III
SYSTEM OVERVIEW
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