Garmin G1000 Pilot's Manual page 24

SYSTEM OVERVIEW
Predicting RAIM availability:
1) Select the GPS Status Page.
2) Press the FMS Knob. The 'WAYPOINT' field is highlighted.
3) Turn the small FMS Knob to display the Waypoint Information Window.
4) Enter the desired waypoint:
a) Use the FMS Knob to enter the desired waypoint by identifier, facility, or city name and press the ENT Key. Refer
to Section 1.7 for instructions on entering alphanumeric data into the G1000.
OR :
a) Use the large FMS Knob to scroll to the Most Recent Waypoints List.
b) Use the small FMS Knob to highlight the desired waypoint in the list and press the ENT Key. The G1000
automatically fills in the identifier, facility, and city fields with the information for the selected waypoint.
c) Press the ENT Key to accept the waypoint entry.
OR :
a) To use the present position, press the MENU Key.
b) With 'Set WPT to Present Position' highlighted, press the ENT Key.
c) Press the ENT Key to accept the waypoint entry.
5) Use the FMS Knob to enter an arrival time and press the ENT Key.
6) Use the FMS Knob to enter an arrival date and press the ENT Key.
7) With the cursor highlighting 'COMPUTE RAIM?', press the ENT Key. Once RAIM availability is computed, one
of the following is displayed:
• 'COMPUTE RAIM?'—RAIM has not been computed for the current waypoint, time, and date combination
• 'COMPUTING AVAILABILITY'—RAIM calculation in progress
• 'RAIM AVAILABLE'—RAIM is predicted to be available for the specified waypoint, time, and date
• 'RAIM NOT AVAILABLE'—RAIM is predicted to be unavailable for the specified waypoint, time, and date
• GPS Satellite Signal Strengths
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) below each bar. The progress of
satellite acquisition is shown in three stages, as indicated by signal bar appearance:
- No signal strength bar—Receiver is looking for the indicated satellite
- Hollow signal strength bar—Receiver has found the satellite and is collecting data
- Solid signal strength bar—Receiver has collected the necessary data and the satellite signal can be used
- Checkered signal strength bar—Receiver has excluded the satellite (Fault Detection and Exclusion)
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).
1-14 Garmin G1000 Pilot's Guide for the Diamond DA40/40F 190-00592-02 Rev. A