SOA
SOG
SPEED OF ADVANCE
SPEED OVER GROUND
TIME TO GO
TOGGLE
Error/Warning Messages.
Speed of Advance.
Speed Over Ground.
A component of ground speed
(SOG) towards the destination.
Abbreviated as SOA. Displayed
when NAV is pressed and after
three position fixes have been
taken.
A-23
SQ
3D
Actual ground speed measured as
instantaneous speed and direc-
tion. Abbreviated as SOG. The
calculation is made by the unit
instantly and displayed with VEL.
See Signal Quality.
Three dimensional. The mode of
operation that calculates latitude,
longitude, and altitude, requiring
the use of four satellites.
Time To Go. The time necessary
to reach the destination of the
current leg, based on Speed
of Advance (SOA).
To switch back and forth between
two settings, or to move through
settings in a continuous loop. For
example, when setting latitude,
use the RIGHT ARROW to toggle
between North and South.
TTG
Time To Go.
2D
Two dimensional. The mode of
Operation that calculates latitude
and longitude only, requiring the
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