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PLUS Series LCD Display
6.6 GPS Setup
GPS set up page provides you with information and the status of the tracked
for a SeaTalk GPS. It also enables you to SET UP a SeaTalk
Differential GPS, by manually retuning it to a different differential beacon.
The GPS Navigation Status pop-up window (shown in Figure 6-4) provides,
for each tracked satellite, the satellite number, a graphical signal strength bar
and its current usage status. HDOP and satellite Fix Status are also displayed.
Data for up to 12 satellites are shown.
Figure 6-4: Navigation Status Window
Positional accuracy is dependent upon certain parameters; in particular for
GPS, the azimuth and elevation angles are used in a triangulation process to
calculate 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:
• FIX, where a satellite fix has been acquired.
• D-FIX, where a differential beacon fix has been acquired.
• SD-FIX, where a satellite differential fix has been acquired.
• NO FIX, where no fix can be acquired.
➤ To select GPS Set Up:
MENU, then press the GPS SETUP... soft key.
The Navigation Status pop-up window shown in Figure 6-4 is displayed.
81186_2.book Page 8 Monday, December 17, 2001 8:35 AM