Garmin 190-00683-00 Manuale Utente

The progress of satellite acquisition is shown in three stages:

• 

No signal strength bars—the receiver is looking for the 

satellites indicated.

•  White signal strength bars—the receiver has found the 

satellite and is collecting data.

•  Green signal strength bars—the receiver has collected the 

necessary data from this satellite.

When the GPSMAP 378/478 collects the necessary data from the 

best satellites in view to calculate a fix, the status field indicates the 

status of the receiver. The unit then updates the location, date and 

time.

The Receiver Status field shows one of the following conditions:

• 

Searching the Sky—the receiver is looking for satellites.

•  AutoLocate—the receiver is looking for any satellite whose 

almanac was collected, which can take up to five minutes.

•  Acquiring Satellites—the receiver is looking for and 

collecting data from satellites visible at its last known or 

initialized location but has not acquired a fix.

• 

2D GPS Location—At least three satellites were acquired 

and a two-dimensional position fix was calculated. 

“2D Differential” appears when you are receiving DGPS 

corrections in 2D mode, and a “D” appears on the strength bar 

of satellites being corrected.

•  3D GPS Location—At least four satellites were acquired 

and a three-dimensional fix was calculated. “3D Differential” 

appears when you are receiving DGPS corrections in 

3D mode, and a “D” appears on the strength bar of satellites 

being corrected.

•  Lost Satellite Reception—the receiver is no longer tracking 

enough satellites for a 2D or 3D fix.

•  Receiver Not Usable—the receiver is unusable, possibly due 

to interference or abnormal satellite conditions. Turn the unit 

off and back on to reset it.

•  Simulating GPS—the receiver is in Simulator Mode.
•  GPS Off—the GPS receiver is turned off.

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