Garmin Foretrex 101 Owner's Manual - Page 54

Map Datums, To change the Map Datum

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Main Menu Pages Setup Menu: Set Units Set Units Page Selecting the Map Datum Map Datums A map datum is a reference model of the earth's shape. Every map uses a map datum which is usually listed in the title block of the map. The default datum in the Foretrex 101 is WGS 84 (World Geodetic Survey, 1984). You should only change the datum if you are using maps or charts that specify a different datum. Choose the 'USER' datum if using a map with custom-designed grids. NOTE: The 'USER' datum is based on a WGS-84-Local datum and is an advanced feature for unlisted or custom datums. To learn more, check your local library or the Internet for educational materials on datums and coordinate systems. To change the Map Datum: 1. Press the PAGE button until the Main Menu Page is displayed. Use the UP and DOWN buttons to highlight 'SETUP' and press ENTER. 2. Use the UP and DOWN buttons to highlight 'SET UNITS' and press ENTER. 3. Press the UP or DOWN button to highlight the 'MAP DATUM' field and press the ENTER button. 4. Press the UP or DOWN button to highlight the desired datum and press the ENTER button. 5. Press the PAGE button to return to the Main Menu Page. 48

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48
Main Menu Pages
Map Datums
A map datum is a reference model of the earth’s shape.
Every map uses a map datum
which is usually listed in the title block of the map.
The default datum in the Foretrex 101
is WGS 84 (World Geodetic Survey, 1984).
You should only change the datum if you are
using maps or charts that specify a different datum.
Choose the ‘USER’ datum if using a
map with custom-designed grids.
NOTE:
The ‘USER’ datum is based on a WGS-84-Local datum and is an advanced
feature for unlisted or custom datums.
To learn more, check your local library or
the Internet for educational materials on datums and coordinate systems.
To change the Map Datum:
1.
Press the
PAGE
button until the Main Menu Page is displayed.
Use the
UP
and
DOWN
buttons to highlight ‘SETUP’ and press
ENTER
.
2.
Use the
UP
and
DOWN
buttons to highlight ‘SET UNITS’ and press
ENTER.
3.
Press the
UP
or
DOWN
button to highlight the ‘MAP DATUM’ field and press the
ENTER
button.
4.
Press the
UP
or
DOWN
button to highlight the desired datum and press the
ENTER
button.
5.
Press the
PAGE
button to return to the Main Menu Page.
Setup Menu: Set Units
Set Units Page
Selecting the Map Datum