Owner's Manual

36 Astro 320 and DC40 Owner’s Manual
Navigation Tools
2. Move back to the “course line to
destination” to compensate for
deviation and to get back on course.
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notice
Calibrate the electronic compass
outdoors. Do not stand near objects that
inuence magnetic elds, such as cars,
buildings, or overhead power lines.
The Astro has a 3-axis electronic
compass. You should calibrate the
compass after moving long distances,
experiencing temperature changes, or
changing the batteries.
1. From the main menu, press DOG >
MENU.
2. Select Calibrate Compass > Start.
3. Follow the on-screen instructions.
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You can show pointers on the compass
in order to track the direction of the
rst three dogs in your dog list.
1. From the main menu, select Tools >
Compass.
2. Press MENU.
3. Select Show Dog Pointers.
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
You can point the device at an object
in the distance, such as a water tower,
lock in the direction, and then navigate
to the object.
1. From the main menu, select Tools >
Sight ‘N Go.
The bearing pointer points to the
top of the compass.
2. Point the device at an object.
3. Select Lock Direction.