44 RC400 GPS Chartplotter
Figure 4-3: GPS Status Screen and Soft Key
The GPS STATUS screen provides, for each tracked satellite, the satellite
number, a graphical signal strength bar, status, azimuth angle and its
elevation angle from your vessel.
Positional accuracy is dependent upon these parameters; in particular, the
azimuth and elevation angles are used in a triangulation process to
calculate your position. HDOP (Horizontal Dilution Of Position) is a
measure of this accuracy; a higher figure signifies greater error. In ideal
circumstances, the figure should be in the region of 1.0. The Fix Status
can indicate:
• SD-FIX, where a Satellite Differential fix has been acquired
• FIX OK, where a normal GPS fix has been acquired
• NO FIX, where no satellite fix can be acquired
D6250-1
0
0
0
0
0
0
0
0
0
0
0
0
GPS STATUS
SD-FIX1.0
FIX STATUS
HDOP
122
D6253-2
SD-GPS
ENABLE
RESET
GPS
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