Viewing Celestial Information .............................................. 75
Sun & Moon Tab ..........................................................................75
Hunt & Fish Tab ...........................................................................76
Viewing Messages ................................................................. 77
Viewing the Temperature ...................................................... 78
Changing the Temperature Display ..............................................78
Reset the Temperature Graph .......................................................78
Customizing Your 276C Plus ............................................79
Setting up the System ........................................................... 79
Adding a Welcome Message .........................................................79
Enabling Map Data .......................................................................80
Changing the Page Layout and Data Fields ..................................81
Setting up the Map Page ...............................................................81
Changing the Page Sequence ........................................................82
Some Tips about the Page Sequence .......................................82
Changing the Display ...................................................................83
Changing the Sounds ....................................................................84
Changing the System Settings ......................................................85
Setting the Timers .........................................................................86
Changing the Time ........................................................................86
Customizing the Units ..................................................................87
Restoring Defaults ........................................................................87
Customizing the Routing and Guidance Settings .............. 88
Road Routing Settings ..................................................................88
Guidance Settings .........................................................................89
Changing the Location Settings .......................................... 90
Changing the Location Format .....................................................90
Selecting a Different Map Datum .................................................90
Selecting a Different Heading Reference .....................................90
Changing the Data Format ................................................... 91
Advanced NMEA Output Setup ...................................................93
Setting up and Using Sonar .............................................94
Using the Sonar Page ........................................................... 94
Adjusting the Sonar Page .............................................................95
Adjustment Options ................................................................96
Resizing the Split Screen ..............................................................97
Using the Pointer on the Sonar Page ............................................98
Marking an Underwater Waypoint ...............................................98
Showing Sonar on the Map Page ..................................................99
Setting Up the Sonar ........................................................... 100
Calibrating the Water Speed .......................................................101
Setting up the Sonar Display ......................................................102
Understanding Sonar .......................................................... 103
Understanding the Sonar Display ...............................................103
Transducer Coverage ..................................................................104
Whiteline ....................................................................................105
Thermoclines ..............................................................................105
276C Plus Owner’s Manual
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