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SECTION 6
GPS Receiver
Reference
current position fix (indicated by a “2D Navigation’’ or
“3D Navigation” in the status field). You can also set the
sky view to a ‘Track Up’ configuration, causing the top of
the sky view to align along your current track heading.
As soon as the NavTalk has collected the necessary
data to calculate a fix, the status field will indicate a 2D
or 3D status. (For “2D“, you may need to enter your
altitude. See page 65.)
6.1.2 Receiver Status
Receiver status is indicated at the top of the page.
The status will be shown as one of the following condi-
tions:
Searching - the NavTalk is looking for any avail-
able satellites in view.
AutoLocate - the NavTalk is initializing and col-
lecting new almanac data. This process can take up
to 5 minutes, depending on the satellites currently
in view.
Acquiring - the receiver is collecting data from
available satellites, but has not collected enough
data to calculate a position fix.
2D Navigation - at least three satellites with good
geometry have been locked onto and a 2-dimen-
sional position fix (latitude and longitude) is being
calculated. “2D Diff” will appear when you are
receiving DGPS corrections in 2D mode.
3D Navigation - at least four satellites with good
geometry have been locked onto, and your position
is now being calculated in latitude, longitude and
altitude. “3D Diff” will appear when you are receiv-
ing DGPS corrections in 3D mode.
Poor GPS Coverage - the receiver isn’t tracking
enough satellites for a 2D or 3D fix due to bad
satellite geometry.
Not Usable - the receiver is unusable, possibly due
to incorrect initialization or abnormal satellite con-
ditions. Turn the unit off and back on to reset, and
re-initialize the receiver if necessary.
Simulating Nav - the receiver is in simulator mode.
The status bar displays “Sim” on all main pages.
The NavTalk is acquiring
satellite data to establish a
position fix.
Simulator On .
“Sim’ appears on all Main
GPS and Cellular Page
status bars.
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