
Main Menu.
Main Menu Commands
There are four "basic" Main Menu commands that you'll really want to read more about. They are:
•Screen commands (CONTRAST, BRIGHTNESS and DISPLAY MODE): change
the appearance of the display screen. Use these commands to adjust how the screen looks under various lighting conditions.
•Sounds command: controls sound levels for keystrokes and alarms. If you don't like to hear a beep each time you press a key, you can turn all
sounds off by setting the volume to zero. Sound is especially useful when used with the Fish I.D. fish symbol feature and fish alarm feature.
•Sonar Alarms command (a
•Popup Help command (one of the System Setup options): turns the
The remaining Main Menu commands are either for GPS use, or for ad- vanced sonar functions, mostly setting various system options. (They're all detailed later in Sec. 4, Advanced Sonar Operation, or Sec. 7, System Setup and GPS Setup Options.) The other Sonar options in the Main Menu are:
•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.
•Reset Options command: returns all options and auto functions to their original factory settings. It's a great safety net while you're learning and experimenting with various settings.
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