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GPS Receiver
Reference
SECTION 6
6.1.3 ‘Need to Select Initialization’ Prompt
If no satellites are received for several minutes (or
an insufficient number of satellites are received to deter-
mine a position fix) a message will appear, prompting
you to initialize the receiver (see section 1). This allows
you to specify a starting location from which to search
for satellites, or to enable the AutoLocate feature, and is
useful if you have traveled over 500 miles with the
receiver off (this message will automatically appear
when you first use your NavTalk. The prompt may also
appear during normal use if the antenna is shaded or
the unit is used indoors.)
6.1.4 EPE and DOP
The Satellite Status Page also indicates the accuracy
of the position fix, using Estimated Position Error (EPE)
and Dilution of Precision (DOP) figures. DOP measures
satellite geometry quality (i.e., number of satellites
received and where they are relative to each other) on a
scale from one to ten. The lowest numbers are the best
accuracy and the highest numbers are the worst. EPE
uses DOP and other factors to calculate an estimated
position error, in feet or meters.
6.1.5 Satellite Status Page Options Menu
Every NavTalk page has a corresponding options
menu which allows you to customize that particular
page. To display the Satellite Status Page options menu,
press MENU from the Satellite Status Page.
The following options are available:
Start Simulator - starts the NavTalk’s built-in sim-
ulator (if ‘Start Simulator’ is selected, ‘Stop Simulator’
will appear as an option instead.)
Track Up - changes the sky view display from
‘North Up’ orientation to align to your current direction
of travel (track). If ‘Track Up’ is selected, ‘North Up’ will
appear as an option instead.
AutoLocate - forces the NavTalk to search for any
available satellite(s) to determine its position. This
option is useful if you’ve relocated a distance greater
than 500 miles from the last location the NavTalk was
used.
64
Using the Map to
Initialize
Satellite Status Page Menu
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