Filter
Top Products
Receiver Status & EPE
Receiver status is indicated at the top left of the screen,
with the current horizontal accuracy (estimated position
error, in feet or meters) at the top right. The status will
show one of the following conditions:
Searching— the GPS 38 is looking for any available
satellites in view.
AutoLocate
TM
— the GPS 38 is initializing and collect-
ing new almanac data. This process can take 7.5 to 15
minutes.
Acquiring— the receiver is collecting data from avail-
able satellites, but has not collected enough data to cal-
culate a 2D fix.
2D Nav (2D Navigation)— at least three satellites
with good geometry have been locked onto and a 2
dimensional position fix (latitude and longitude) is
being calculated. ‘2D Diff’ will appear when you are
receiving DGPS corrections in 2D mode.
3D Nav (3D Navigation)— at least four satellites with
good geometry have been locked onto and your posi-
tion is now being calculated in latitude, longitude and
altitude. ‘3D Diff’ will appear when you are receiving
DGPS corrections in 3D mode.
Poor CVG (Poor GPS Coverage)— the receiver is no
longer tracking enough satellites for a 2D or 3D fix.
Not Usable— the receiver is unusable, possibly due to
incorrect initialization or abnormal satellite conditions.
Turn the unit off and back on to reset.
Simulator (Simulating Navigation)— the receiver is
in simulator mode.
EZinit Option Prompt
The Satellite Page also provides access to the EZinit
prompt whenever a position fix has not been calculated
(the unit must be in searching, AutoLocate, acquiring, sim-
ulator or poor coverage mode). This allows you to manually
reinitialize the unit (see page 5-8 for instructions), and is
useful if you have traveled over 500 miles with the receiver
off and you know it must be initialized to your new posi-
tion (the GPS 38 will automatically offer the
EZinit prompt after 10 minutes of unsuccessful satellite
acquisition).
A ‘Poor Coverage’ status
will appear if the receiver
has lost the satellites
required to compute a fix.
Make sure the intern a l
antenna is not covered and
has a clear view of the sky.
If you travel more than 300
miles with the receiver off,
you may have to reinitialize
the receiver to your new
location. To access the EZinit
prompt, press ENTER from
the Satellite Page before the
receiver has acquired any
satellites.
R E F E R E N C E
Receiver Status
& EZinit
18
GPS 38 Man Rev B 7/23/98 4:32 PM Page 18