Once the route option has been selected, you’ll need
to select the route number you want to perform the trip
planning for.
3. Press
E
to begin selection of the desired route.
4. Enter the route number and press
E
. The field highlight
will advance to the ‘Leg’ field, where you can select to
either ‘All’ or a specific route leg (Leg 1, etc.) to calculate.
5. Press the
E
key.
6. Press
E
to begin entry of the route or leg speed.
7. Enter the trip speed and press
E
. The field highlight will
advance to the ‘Flow’ field.
8. Press
E
to begin entry of the hourly fuel flow.
9. Enter the fuel flow for the route or leg and press
E
.
The GPS 90 will display the distance, fuel requirement
and the estimated time enroute for the route or route leg,
and provide the desired track for each leg.
The next E6-B function available is the
sunrise/sun-
set calculator
, which will allow you to calculate the
sunrise and sunset for any known waypoint or your pre-
sent position for a specific date.
To calculate sunrise/sunset information:
1. Highlight the waypoint field and press
E
.
2. Use the arrow keypad to enter the desired waypoint, or
leave the waypoint field blank to calculate the sunrise/
sunset for your present position and press
E
. The field
highlight will automatically advance to the date field.
3. Press
E
to begin entry of the date. The default date will
be the current date as calculated by the GPS satellites.
4. Use the arrow keypad to enter the desired date, month and
year (the last two digits).
5. Press
E
. The sunrise and sunset for the entered date
will be displayed at the bottom of the page.
57
E6-B Menu
Route Planning
Sunrise/Sunset
Selecting the leg/all
mode for route plan-
ning calculations.
Entering a date
for sunrise/sunset
planning.
gps 90 manual 8/6/98 10:01 AM Page 57
