
4
Astro and DC 40 Owner’s Manual
GPS Applications
6. Select an option:
Select
Set Course
to navigate to
the distant object.
Select
Project Location
).
Select
Re-Sight
to set course on
a different object.
Calibrating the Compass
notice
Calibrate the electronic compass
outdoors. Do not stand near objects that
influence magnetic fields, such as cars,
buildings, or overhead power lines.
You should calibrate the compass after
moving long distances, experiencing
temperature changes, or changing the
batteries.
1. Press
DOG
>
MENU
.
2. Select
Calibrate Compass
>
Start
.
3. Follow the on-screen instructions.
•
•
•
Altimeter
Plotting Elevation on the
Altimeter
1. From the main menu, select
Advanced
>
GPS Applications
>
Altimeter
.
Your current elevation
➊
and the
rate of your ascent or descent
➋
appear.
➋
➊
➌
➍
2. Press
MENU
.
3. Select
Plot Over Time
or
Plot
Over Distance
➌
.