Magellan GPS 310 - Manual (Page 35)

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Changing North Reference
The GPS 310 uses magnetic north as a default reference for all
navigation computations. You can change this to true north
(good if you are also using a map) or back to magnetic north
(default, good to use if you are using a compass) under the
SETUP menu. Press the MENU key until SETUP is dis-
played at the top of the screen and press ENTER . Use the
RIGHT ARROW until SETUP NORTH REF is displayed.
Press ENTER again, the north reference begins to flash. Use
the RIGHT/LEFT ARROWs to scroll between MAGNETIC
and TRUE and press ENTER to select.
Initializing the Receiver (EZSTART)
If you desire to re-initialize the receiver, (for example, you
have moved more than 300 miles since the last time the
receiver was turned on) you can do so in the SETUP menu.
Press MENU until SETUP is displayed at the top of the screen
and press ENTER . Use the RIGHT ARROW until SETUP
PRESS ENT TO EZSTRT is displayed. Press ENTER again
and the receiver prompts you to enter the necessary data.
SELECT REGION. Use the ARROW pad to change the
flashing text to select the appropriate region for your present
location. Press ENTER .