Garmin 4008 Guida Utente

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GPSMAP
®
 4000/5000 Series Owner’s Manual 
3
Getting Started
Getting 
Started
Minimum Safe Depth—select the minimum safe depth for your boat. Refer to your boat 
specifications for more information.
Minimum Overhead Clearance—select the minimum overhead clearance for your boat. Refer to 
your boat specifications for more information.
Adjusting the Backlight
1.  Press and release the   
Power
 key.
2.  Select 
Backlight
.
To allow the unit to automatically adjust the backlight based on ambient light, select 
Auto
To manually adjust the backlight, 
either select 
Up
 or 
Down
, use the 
ROCKER
 (GPSMAP 4000 series), 
or touch and drag the brightness 
bar (GPSMAP 5000 series). 
To adjust the color mode:
1.  Press and release the   
Power
 key.
2.  Select 
Color Mode
.
3.  Select 
Day Colors
Night Colors
, or 
Auto
.
Acquiring GPS Satellite Signals
When you turn the unit on, the GPS receiver must collect satellite data and establish its current 
location. When the unit acquires satellite signals, the signal strength bars at the top of the Home 
screen are green 
. When the unit loses satellite signals, the green bars disappear 
 and the 
position icon shows a flashing question mark.
For more information about GPS, visit the Garmin
®
 Web site at