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190-01255-00 Rev. B
Garmin G1000H
™
Pilot’s Guide for the Bell 407GX
25
SYSTEM OVERVIEW
Disabling WAAS, EGNOS or MSAS
1) Select the GPS Status Page.
2) If necessary, select the SBAS Softkey.
3) Press the
FMS
Knob
, and turn the large FMS Knob to hightlight the desired SBAS system.
4) Press the ENT Key to uncheck the box.
5) Press the FMS Knob to remove the cursor.
•GPSSatelliteSignalStrengths
The 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 PRN number (01-32 or 120-138 for WAAS) 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
- Light blue 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).