Enter the time and date for RAIM prediction.
SECTION
1
NAV KEY
RAIM Prediction
RAIM available for the entered time, date and
waypoint location.
The
RAIM Prediction function
allows you to confirm that GPS coverage is
available for your current location or at a specified waypoint any day of the year.
R
eceiver
A
utonomous
I
ntegrity
M
onitoring performs checks to ensure that the GPS
150XL 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
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 GPS 150XL will display whether or not
RAIM is available for the specified waypoint at the specified date and time. Refer to
the table on page 72 for specific RAIM protection limits as they relate to CDI scale
figures.
28
150xl manual B 8/4/98 1:09 PM Page 28
