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To set Lat/Lon Grid: Press
MENU|↓ to MAP DATA|ENT. Press ↓ to
LAT/LON GRID LINES. With the option highlighted, press ENT to check it
(turn on) and uncheck it (turn off). After the option is set, press
EXIT to
return to the page display.
Draw Map Boundaries
Press
MENU|↓ to MAP DATA|ENT. Press ↓ to DRAW MAP BOUNDARIES. With the
option highlighted, press
ENT to check it (turn on) and uncheck it (turn
off). After the option is set, press
EXIT to return to the page display.
Map Datum Selection
Maps and charts are based on a survey of the area that's covered by the
map or chart. These surveys are called "Datums." Maps that are cre-
ated using different datums will show the same latitude/longitude in
slightly different locations.
All datums are named. The GPS system is based on the WGS-84 da-
tum, which covers the entire world. Other datums may also cover the
entire world, or just a small portion of it. By default, your position
shows using the WGS-84 datum. However, it can show your position
using one of 191 different datums.
To change the datum:
1. Press
MENU|MENU|↓ to GPS SETUP|ENT|↓ to DATUM SELECTION|ENT.
2. Scroll ↓ or ↑ to select the desired datum, then press
ENT.
3. To return to the last page displayed, press
EXIT|EXIT.
A list of the datums used by this unit is in the back of this manual.
GPS Setup Menu, left, Map Datum Menu, right.
Map Detail Category Selection
This menu determines which of the mapping features are shown on the
screen. This includes, waypoints, trails, icons, cities, highways, etc. You
can selectively turn on or off any of these items, customizing the map to
your needs.