Magellan 300GPS - Manual (Page 38)

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Icons
Provides a visual indication of whether the receiver
is “locked” or “unlocked” on satellite signals. While the tracking
icon is displayed, the receiver is updating its position and can be
used to save landmarks and as a navigation tool. If the tracking
icon is not displayed, you may need to reposition the GPS
receiver to get a better view of the sky.
Battery Warning. When this icon first appears, the
receiver will operate for about an additional hour before
automatically turning off.
The Magellan GPS 300 will retain its memory (route, land-
marks, last fixes, etc.) for 20 minutes with the batteries removed.
Memory will be retained even with low batteries for approxi-
mately one month if the unit is turned off.
Light. Displayed when the LCD backlight has been turned
on with the key. The backlight will cause the batteries to
run down much quicker and should be turned off when not
needed.
External Power. Displayed when the GPS 300 is
operating from external power using the GPS External Power
Cable.