14
Cold
vs.
Warm
Start.
When
the eXplorist is turned on, one of the first things
it
does is
to find out which satellites are overhead, along with
their
relative position. It does this
by
using a built-in satellite almanac. This almanac, when given the current date,
time
and approximate position, can provide the eXplorist with information
on
which satellites
are overhead and their approximate relationship to the eXplorist. Now with information
on
satellite availability, the eXplorist can begin setting its internal satellite channels to
receive satell ite transm issions.
Cold
Start.
Cold start is defined
as
when the eXplorist does not have
an
approximate position to
use
when referring to its almanac. This can occur when:
• The eXplorist is turned
on
for the first
time
after purchase. The memory is
cleared prior to shipping
so
that any position that may have
been
in
the
eXplorist
is
set to a null value.
•
If
you
have
cleared the eXplorist's memory, (found in Preferences) all of
the memory will
be
cleared and the last computed position will
be
set to a
null value.
•
If
you have traveled with your eXplorist with
it
turned off, the last position
saved may
be
so
far away that when the eXplorist begins looking for
satellites, the ones
it
is expecting to find are not there.
(As
a rule of
thumb,
any
time
you
move for more than
500
mi
[804.7
km] with the
eXplorist turned off, there is a good chance that
it
wi
II
start up using a
cold start.
A cold start should take no more than
2-3
minutes to compute the initial position
fix.
Warm
Start.
Warm
starts
are
when the last position calculated before the
eXplorist was turned
off
is still
in
memory and you are in the same approximate
position. Most of the time
that
the eXplorist is turned on,
it
wi
II
be
in its warm-
start mode. With a clear view of the
sky,
the eXplorist shou
Id
compute its
position
ina
matter of seconds.
This concludes the initial startup procedure for the Magellan eXplorist
500.
Once the Map
screen is displayed, you
have
successfully initialized the eXplorist and are ready to go.
Now
wou
Id
be
a good ti
me
to fam iIiarize yourself with the different navigation screens
(using the
NAV
button) and to set any preferences
that
may
be
different from the factory
defaults.
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