Filter
Top Products
37
Setup Page
The eTrex bearings will correspond to a compass if the eTrex is set to magnetic north.
Due to errors introduced when map makers flatten 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’ (GRID). 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 select a ‘User-Defined Grid’ (USER) to correct for the difference between Grid North
and True North manually.
To change the North Reference:
1. Press the PAGE Button and switch to the ‘MENU’ Page. Use the UP and DOWN Button
and highlight the ‘SETUP’ field. Press ENTER. The ‘SETUP’ Page appears.
2. Press the
UP or DOWN Button to select ‘UNITS.’ Press ENTER. The ‘UNITS’ Page appears.
3. Press the
UP or DOWN Button and select the ‘NORTH REF’ field. Press ENTER.
4. Press the
UP or DOWN Button to select the desired reference (TRUE, MAG, GRID, or
USER). Press ENTER. The desired North Reference is selected.
5. Press PAGE to return to the page of your choice.
Variance
The eTrex automatically lists the variance between Grid North and True North for the selected
North Reference grid. If you select a user-defined grid, you can enter the variance manually.
To enter Variance manually:
1. From the MENU Page, press the UP or DOWN button to highlight ‘SETUP.’ Press ENTER.
2. Press the
UP or DOWN button to select ‘UNITS.’ Press ENTER. The UNITS Page appears.
3. Press the
UP or DOWN button to select the ‘VARIANCE’ field. Press ENTER.
4. Press the
UP or DOWN button to select ‘INCHES’ or ‘MILLIBARS.’ Press ENTER. Press
PAGE to select the page of your choice.
Units Page
While it should rarely be needed the user can manually
adjust the variation/declination by selecting USER in the
North Reference field.
With a USER-defined grid selected, you can manually set the
variance by highlighting the Variance field, pressing
ENTER
and inputting a new angle.