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Reference
The amount of variation/declination changes as you
move around the earth. ‘Magnetic North’ is the direction
in which a compass needle points. Due to errors intro-
duced when map makers fl atten the earth’s sphere onto
paper, not all of the grid lines drawn on the map point
exactly to the north pole, so the north indicated by the
grid lines is called ‘Grid North’. But, the difference is
usually small enough that ‘Grid’ north can be considered
the same as True North for travelling on land. If necessary,
you can correct for the difference between Grid North and
True North manually. The eTrex Summit will refl ect the
North Reference setting when using the GPS or Electronic
Compass for a bearing.
The Electronic Compass will refl ect the North
Reference setting. If you have selected ‘TRUE
NORTH’ the Electronic Compass will point
‘TRUE NORTH’ not Magnetic North.
To change the North Reference:
1. With the MENU page displayed using the UP or
DOWN Button highlight ‘SETUP’ and press ENTER.
2. Using the UP or DOWN Button to highlight ‘HEAD-
ING’ and press ENTER. The HEADING Page appears.
3. Using the UP or DOWN Button select the ‘NORTH
REF’ fi eld and press ENTER.
4. Using the UP or DOWN Button select the desired
reference. Press ENTER. Press PAGE to return to the
page of your choice.
When you select the ‘DEFAULTS’ fi eld and press
ENTER, the UNITS Page returns to the factory settings.
The eTrex Summit automatically
adjusts the variation/declination.
While it shold rarely be needed
the user can manually adjust the
variation/declination.
To manually set the variation or
declination, highlight the Angle
fi eld, press ENTER and input
a new angle.
F
North Reference
190-00193-00_0D.indd 02/12/01, 10:09 AM52