Lowrance electronic GlobalMap 12 - Manual (Page 57)

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the .1 mile as an example, if you’re anchored and
your boat moves more than .1 of a mile, the alarm
will sound.
To use any of these alarms, first press the MENU
key, then select the “GPS ALARMS” menu. A
screen similar to the one shown at right appears.
Highlight the desired alarm, then press the right
arrow key to turn it on.
To adjust the alarm’s distance, move the black box to the alarm’s “DIS”
menu item, then press the right or left arrow keys to increase or decrease
the alarm’s distance.
Press the EXIT key to erase this menu.
Important Alarm Notes:
Anchor Alarm - Since civilian users don’t receive the accuracy given to
military users, the anchor alarm may sound even when you’re sitting still.
This typically happens when using small (less than .05 mile) anchor alarm
ranges. If you have a DGPS beacon receiver connected to the GlobalMap
12, smaller ranges may be usable.
Arrival Alarm - If you set the arrival alarm’s distance to zero (0), and you
run a route (see the routes section), the GlobalMap 12 may not show
navigation data to the next waypoint, once you arrive at the first one. If you
use the routes feature, never set the arrival alarm to zero.
MESSAGES
At the bottom of the GPS Alarms menu are the
position (POS) and DGPS message selections.
When turned on, the position message (shown at
right) appears for a few seconds whenever the
GlobalMap 12 locks onto the satellites and shows
a position. It also appears when the unit loses the
lock onto the satellites and cannot navigate. Press-
ing the EXIT key erases these messages.
The DGPS message appears whenever the unit begins or stops using
DGPS data to help determine your position.
To turn on either message, select the “GPS Alarms” menu from the main
menu, then highlight the desired message and press the right arrow key
to activate it. Press the EXIT key to erase this screen.