Garmin GPS 120 - Manual (Page 24)

3D Navigation indicates that at least bur satel­
lites with good geometry have been locked onto
and your position is now being calculated in lat­
itude, longitude and altitude, ‘3D Dili’will appear
when you are receiving DGPS corrections in 3D
mode.
Searching the Shy indicates that the GPS 120
is collecting new almanac data or AutoLocate™
mode has been selected {see page 38). This
process can take 7.5 to 15 minutes.
Poor GPS Coverage indicates that the receiver
is no longer tracking enough satellites to provide
a 2D or 3D position fix.
Simulator indicates that the receiver is in
simulator mode.
Not Usable indicates that the receiver is
unusable, possibly due to incorrect initialization
or abnormal satellite conditions. Turn the unit
off and back on.
On the right side of the screen, just below the
horizontal accuracy field is the screen backlight
indicator. When backlighting is on, a bulb icon
will appear. To adjust the screen backlighting:
1. M om entarily press the key to toggle
through low , m edium , high and off.
2. To adjust the duration of screen backlighting,
refer to the operation setup section (page 39).
A
The GPS 120 uses the latesttechnology in Electro-
Luminescent (EU tiacklight to provide the most
eon-
sistent backlighting possible. The typical life of the
EL backlight at full brightness is 4000 to SOOO hours
of
continuous use.
Using the lowest backlight level
possible, or not using bacldight when possible wll
extend the life
of the
backlighting by many years
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