Heading Setup; Calibration Setup - Garmin Astro Owner's Manual

Settings
• Depth—select the unit of measurement (Feet,
Fathoms, or Meters).
• Pressure—sets the unit of measurement (Inches,
Millibars, or Hectopascals) to show pressure.

Heading Setup

Use the Heading Setup page to specify the type of
heading display and the type of North reference used to
calculate your heading.
NOTE: Unless you have a working knowledge of
headings and North referencing, it is recommended that
you use the default values.
To access the Heading Setup page:
From the Main Menu select Advanced > Settings >
Heading.
• Display—sets the value (Cardinal Letters,
Degrees, or Mils).
• North Reference—provides headings based on a
true, magnetic, grid, or specific user value.

• Switch to compass heading when below (for
more than...)—allows you to enter a speed and
time delay for electronic compass switching.

Calibration Setup

The Calibration Setup page allows you to calibrate
the compass and altimeter for increased accuracy in
navigation.
To calibrate the compass:
1. From the Main Menu, select Advanced > Settings
> Calibration. The "Which sensor would you like to
calibrate?" message appears.
2. Select Compass to open the Compass Calibration
page. Follow the instructions provided by the compass
setup wizard.
Astro Dog Tracking System Owner's Manual