Astro and DC 40 Owner’s Manual
4
Customizing Your Device
Heading Settings
You can specify the type of heading
display and the type of North reference
used to calculate a heading.
NOTE
: Unless you have a good
understanding of headings and North
referencing, use the default values.
From the main menu, select
Advanced
>
Settings
>
Heading
.
Display
—sets the units used to
calculate a heading.
North Reference
—provides
headings based on a true, magnetic,
grid, or a specific user value.
Switch to compass heading when
below
—sets the speed to switch
to a compass heading when you
exceed the specified time.
for more than
—sets the time to
switch to a compass heading.
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Altimeter Settings
From the main menu, select
Advanced
>
Settings
>
Altimeter
.
Auto Calibration—
enables the
device to correct elevation readings
using the GPS receiver.
Barometer Mode
Variable Elevation
—sets the
device to function for normal
use, where your changing
elevation displays.
Fixed Elevation
—allows you to
use the device as a barometer.
NOTE
: Use this feature when
you plan to remain stationary.
Trip data is not recorded when
Fixed Elevation is on.
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