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Map Fix
Map Fix is used with charts or maps. This system asks for a reference
position in latitude/longitude, which you take from a marked location
on the map. It then shows the present position as distance on the map
from that reference point.
For example, if it shows a distance of UP 4.00" and LEFT 0.50", you
then measure up four inches and to the left a half-inch from the refer-
ence point on the map to find your location.
To configure a map fix:
To use setup a map fix, follow these steps in order. Take your map of
the area and determine a reference latitude/longitude. (Please note that
in order for this system to work, the latitude/longitude lines must be
parallel with the edge of the map. USGS maps are parallel, others may
not be. Also, this works better with smaller scale maps.) The reference
position can be anywhere on the map, but the closer it is to your loca-
tion, the smaller the numbers will be that you will have to deal with.
Once you have decided on a reference position, you can save it as a
waypoint. See the waypoint section for information on saving a way-
point. Save the reference position as a waypoint. Exit from the way-
point screens.
1. Press
MENU|MENU|↓ to GPS SETUP|ENT.
2. Press ↓ to
COORDINATE SYSTEM|ENT.
3. Press ↓ to
SETUP MAP FIX|ENT.
The following screen appears and
MAP SCALE is highlighted. Press ENT
and enter the map's scale. This is generally at the bottom of the paper
map. It is shown as a ratio, for example 1:24000. Press
EXIT and the
unit returns to the Configure Map Fix screen.
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