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2. Move the wheel key in
the
up or down position to increase or decrease the volume setting. The
volume bar graph will increase
or
decrease
in
steps,
accordingly,
to a
maximum of
16 or a
minimum of 1.
SETTING UP THE GPS FEATURE
Now
that
the basic setup procedures have been performed, you must now perform the setup proce-
dure
for
the
GPS
feature.
This is accomplished as
follows:
1. From
the
SETUP display page, select the GPS mode using the Up/Down
wheel key; the
GPS
icon will be
highlighted (boxed). Then press
Enter.
2.
The GPS menu
shown
below will
appear.
The items in this menu are accessed and
edited
in
the
same manner as
explained
previously for the SETUP menu; use the Up/DownlEnter
wheel key switch
as
before.
a. DATUMS - Since maps and charts are
created
using a
starting reference
point called a
datum,
this
starting
point will differ from
map-to-map.
The most
common
mathematical
ellipsoid used
is
WGS.a4 (World Geodetic System
1984).
In addition to the WGS-84
standard, a great many other datums are available for entry depending on user location.
If
you
use maps or
charts specifying
a datum other than WGS-84,
you
should change
the
datum applicable to that region to reduce position errors. If you are not
sure
of which
datum to apply,
use the WGS-84
datum
for bast overall
performance.
b. LOCATION - The Location
item
provides you with four choices for display of positional
information;
namely.
Degrees
(DODO).
Minutes (MM'), Seconds
(SS"),
Degrees and
Minutes
only
(DDD'MM.MM'), Degrees
only
(DDD.DDDDD') or a UTM (Universal
Transverse Mercator). The capability to adjust the time offset value is available under the
OTHER option of !he TIME ZONE lunction
below.
c. TIME ZONE - Selecting the
Time
Zone provides you with a choice of
the available zones relative to the United States and its possessions.
These
oonsist
01 ATLANTIC, EASTERN, CENTRAL,
MOUNTAIN,
PACIFIC,
ALASKA, HAWAII and
SAMOA.
In addition, Time Zone also
offers
a choice of OTHER, whereby the
unit can
be programmed for
any other specific
area
not
listed.
If OTHER
is
selected, the param
eters are entered under UTC (UniVersal Time
Clock)
Offset.
This
provides you with the capability of adjusting the Time Offset value
between
+12
and -12
in
reference to Greenwich, England.
d. DAYLIGHT
(SavingTime)
- This menu item provides you with the
capability of choosing
the daylight
saving
time mode
{SAVe
OFFI
SAVE ON). In either
case,
the time must be entered manually.
e.
TIME MODE
~
Selecting the Time Mode item allows you
to
select the way
the
time is
presented
on
the display (either 12 HOURS or 24 HOURS
clock
format).
1.
DATE MODE
-
Selecting the Date Mode item allows you to select the way
the
date
is
presented on the display (OD-MM-YV, MM-DI).YV, or YV·MM-DD), where
M=monlh,
D=day and Y=year.
g.
UNIT
~
This item
allows
you
to specify
distance measurements
in
METRIC
(Meters/Kilometers)
,
STATUTe (Feet/Miles) or NAUTICAL
units.
20
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