Altimeter Setup - Garmin Astro 220 Owner's Manual

To calibrate the Altimeter:
Select Altimeter to display the Altimeter Calibration
page. Follow the instructions provided by the
altimeter setup wizard.

Altimeter Setup

The Altimeter Setup page allows you to setup the
altimeter to self-calibrate each time you turn on the unit,
to function as a barometer, or to manually calibrate when
you have accurate elevation or pressure data.
To set up the altimeter:
1. On the Settings Menu, select Altimeter.
2. Select the Auto Calibration field > ENTER to select
from On or Off. When On, elevation is corrected by
the GPS receiver.
3. Select the Barometer Mode field > to select
Variable Elevation (used when moving) or Fixed
Elevation (used when stationary, allowing the
altimeter to function as a standard barometer). Trip
data is not recorded when in Fixed Elevation mode.
Astro Dog Tracking System Owner's Manual
To manually calibrate the altimeter:
1. Select the Calibrate Altimeter button >. Calibrate
the altimeter using one of three methods:
• Enter the correct elevation: this requires a
reliable source for determining the elevation for
your current location.
• Enter the correct pressure: this requires a
reliable source to determine the accurate
barometric pressure at your current location.
• Allow the GPS Receiver to determine the
elevation.
2. When finished, a "Completed" or "Failed" message
appears.
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