Lowrance M52 S/GPS, Installation And Operation Instructions Manual

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Main Menu.
The Main Menu commands and their functions are:
Screen command: changes the contrast or brightness of the display
screen.
Sounds command: enables or disables the sounds for key strokes and
alarms and sets the alarm style.
Alarms command: turns GPS or sonar alarms on or off and changes
alarm thresholds.
Route Planning command: used to plan, view or navigate a route.
My Trails command: shows, hides, creates and deletes plot trails. Also
used to navigate or backtrack a trail.
Cancel Navigation command: turns off the various navigation com-
mands. Used to stop navigating after you have reached your destina-
tion waypoint or plotter cursor location; or after you reach the end of a
route or trail.
•
Set Keel Offset command: calibrates the unit to show depth under
the keel or actual depth from the surface.
•
Sonar Simulator command: turns the simulator feature on and off.
Useful for learning how to operate the unit and all its functions.
GPS Setup command: sets various GPS receiver options.
System Setup command: sets general configuration options.
Sun/Moon Calculations command: finds the rising and setting time
of the sun and the moon.
Trip Calculator command: shows trip status and statistics.
Timers command: controls the up timer, down timer and alarm clock
settings.