5.0
Owner's of the Garmin GPS Receiver nüvi gave it a score of 5.0 out of 5. Here's how the scores stacked up:
The RAIM Prediction function allows you to confirm that GPS coverage is
available for a specific location or waypoint any day of the year. Receiver
Autonomous Integrity Monitoring performs checks to ensure that the GNC 250 will
have adequate satellite geometry to work with during your flight. RAIM availability
will be near 100% in Oceanic, En route and Terminal phases of flight.
To predict RAIM availability:
1. Press
N
and rotate
O
until NAV Menu 2 is displayed.
2. Press
C
twice and rotate
O
to highlight ‘RAIM Prd?’. Press
E
.
3. Rotate
O
to highlight the field which you would like to change.
4. Use
K
and
O
to enter the waypoint name, or leave it blank to use your current
position. Press
E
to accept.
5. Use
K
and
O
to enter the ETA in hours and minutes (in local or UTC time, whichever
you have selected from the clock display), and the day, month and year. The current date
will be displayed automatically. Press
E
to accept.
6. Rotate
O
to highlight ‘Compute RAIM?’.
7. Press
E
to compute information.
When the computations are complete, the GNC 250 will display whether or not
RAIM is available for the specified waypoint at the specified date and time.
26
REFERENCE
Comm Features
Confirm the selected waypoint.
Enter the time and date for RAIM prediction.
RAIM available for the entered time and date.
SECTION
1
NAV KEY
RAIM Prediction
Scheduler
250 real 7/14/98 9:32 AM Page 26
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