Garmin 125 GPS Receiver User Manual


 
Receiver Status and 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 125 Sounder is looking for
any available satellites in view.
AutoLocate
TM
the GPS 125 Sounder is initializ-
ing and collecting new almanac data. This process
can take 7.5 to 15 minutes.
Acquiring— the receiver is collecting data from
available satellites, but has not collected enough
data to calculate 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 position is now being calculated in latitude,
longitude and altitude. ‘3D Diff’ will appear when
you are receiving DGPS corrections in 3D mode.
Poor Cvrg (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.
SIM (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,
simulator or poor coverage status). This allows you to
manually reinitialize the unit (see pg. 6-7 for instruc-
tions), and is useful if you have traveled over 500 miles
with the receiver off and you know it must be initial-
ized to your new position (the GPS 125 Sounder will
automatically offer the EZinit prompt after 10 minutes
of unsuccessful satellite acquisition).
19
A ‘POOR CVRG’ status
will appear on the Satellite
Page if the receiver has lost
the satellites required to
compute a fix. Make sure
the external antenna is not
covered and is connected to
the GPS 125 Sounder.
REFERENCE
Receiver Status
& EZinit
If you travel more than 500
miles with the receiver off,
reinitialize the unit to your
new position by using the
EZinit feature. To access
EZinit, press ENTER from
the Satellite Page before any
satellites are acquired.
125 Man Rev B 7/23/98 11:47 AM Page 19