4
Astro and DC 40 Owner’s Manual
Introduction
EnT
(
EnTEr
)
Press to select options and
acknowledge messages.
rocker
Press to view or scroll
through options and to move
the map pointer.
In
Press to zoom in on the
map.
OUT
Press to zoom out on the
map.
Adjusting the Backlight
1. Press and quickly release .
2. Use the
Rocker
to adjust the
brightness levels.
TIP
: You can also press and
quickly release to cycle through
the brightness levels.
3. Press
ENTER
to select a
brightness level and close the
menu.
Manual Conventions
Press
Use the keys on the device.
Select
Use the
rocker
to select an
option or an item in a list,
and press
EnTEr
.
Field
The location on a page
where data is entered or an
option appears. A highlighted
field appears yellow.
Scroll
bar
A bar that appears on the
right side of a list that is too
long to fit on the screen. Use
the
rocker
to scroll through
a list. Press
In
or
OUT
to
scroll a set of items.
Default
The original factory settings.
You can customize the
settings, but you can
always revert back to the
factory settings by selecting
restore Defaults
.