Garmin GPS 12MAP - Manual (Page 36)

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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 a horizontal position error, in feet or
meters.
Satellite Status Page Options
Many features of the GPS 12 MAP are menu
driven. Each of the main pages has an options
menu, allowing you to custom tailor the
corresponding page to your preferences and/or
select special features which specifically relate to
that page.
To display the Satellite Status Page
Options, press MENU (with the Satellite
Status Page displayed).
The following Satellite Status Page options
are available:
Start Simulator— allows you to activate the
GPS 12 MAP’s built-in simulator mode. If
‘Start Simulator’ is selected, ‘Stop Simulator’
will appear as an option instead.
To activate (deactivate) simulator mode:
1. Highlight ‘Start Simulator’ (or ‘Stop Simulator’) and
press ENTER.
2. Highlight ‘Yes’ and press ENTER.
Track Up— changes the sky view display
from ‘North Up’ orientation to align to
current direction of travel (track). If ‘Track
Up’ is selected, ‘North Up’ will appear as an
option instead.
To change the sky view orientation:
1. Highlight ‘Track Up’ (or ‘North Up’) and press
ENTER.
REFERENCE
Satellite Status
Page
The Satellite Status Page
Options allow you to en-
able the built-in simulator,
or initialize the receiver.
‘AutoLocate’ forces the re-
ceiver to search for all
satellites (twelve at a
time) until enough satel-
lites are found to deter-
mine a position.