Dual XNAV3550 User Manual page 14

Operating the navigation software
GPS
The GPS symbol is placed at the bottom of the screen. The
different GPS icons have the following significance:
Symbol
No GPS
No signal
GPS ready
Tap the GPS icon to display the current GPS status:
Entry Significance
GMT Greenwich Mean Time
Time of London ignoring daylight saving
time.
Longitude / Current position:
Latitude Indication of east longitude and north
latitude.
Satellites Number of received satellites. At least three
satellites must be received for navigation
purposes.
HDOP Horizontal Dilution of Precision:
Indicates the quality of position
determination. Theoretically any value from 0
to 50 may occur. The smaller the value, the
more accurate is the position determination
(value 0 = no deviation from the real
position). Values up to 8 are convenient for
navigation purposes.
USER'S MANUAL XNAV3550
Significance
A GPS receiver is not connected or the
power supply is interrupted.
A GPS receiver is connected, but the
received signals are not convenient for
navigation purposes (e.g. because you
are in a closed building).
The signals are convenient. Navigation
may begin.
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