Lowrance AirMap 300, Installation And Operation Instructions Manual

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Once the AirMap 300 locks on to the satellites and finds your position, it
stores the satellite data in its memory. The next time you use the unit, it
should take much less time to lock on.
To use your AirMap 300, first take it outside, away from hangers and
buildings. You need a clear view of the sky.
Open the antenna and adjust it so that it is parallel with the ground. Press
the PWR key. Read the message on the screen, then press the EXIT key
to erase the message. A screen similar to the one at right appears.
This is Map 3. Your present position is shown
as a cross surrounded by a diamond. As you
wait for the AirMap 300 to find your position,
you’ll see numbers flashing on the display. Any-
time you see flashing numbers, it means the
AirMap 300 does not have a position! Do not
rely on any data that is flashing! When the num-
bers stop flashing, the unit has locked on to
the satellites and the position is good.
That’s all you have to do to find your position. The time display may not be
correct when the cold start method is used. See the manual initialization
section for details on changing the time.
Finding Your Position
Initialization
A cold-start as described above can take up to 5 minutes to find your
position. There is another method to initialize the AirMap 300 that may let
it acquire the satellites faster. Manually entering your position, local time
and date will help the GPS receiver determine which satellites are avail-
able and lock on to them faster. There are two ways to input your position.
You can locate your position on the receiver’s map or enter your latitude
and longitude. Remember, once the receiver finds its position, it stores
the position into memory. The receiver won’t
have to initialized the next time you it on.
Enter by Map
To show the receiver your approximate loca-
tion on its map, first press the MENU key, then
the up or down arrow keys until the “GPS
SETUP” menu is highlighted as shown at right.
Now press the right arrow key. The screen
shown at the top of the next page appears.