ii echo 200, echo 300c, echo 500c, and echo 550c Owner’s ManualIntroductionTable of ContentsIntroduction.............................................................................. iRegistering Your Device .......................................................................iContacting Garmin Product Support.....................................................iManual Conventions .............................................................................iEntering Numerical Values ...................................................................igetting Started........................................................................ 1Keys.................................................................................................... 1Turning On and Turning Off the Device .............................................. 1Color or Grayscale Display ................................................................. 1Configuring the Initial Device Settings ................................................ 1Turning On the Device Automatically ................................................. 1Adjusting the Backlight ....................................................................... 1Adjusting the Color Scheme ............................................................... 2Setting the Color Mode ....................................................................... 2Adjusting the Contrast of the echo 200 .............................................. 2Setting the Beeper .............................................................................. 2Menu Timeout ..................................................................................... 3Using Quick Adjust ............................................................................. 3Viewing Pages ........................................................................ 4Selecting a Page ................................................................................ 4Full Screen Page ................................................................................ 4Split Zoom Page ................................................................................. 5Split Frequency Page ......................................................................... 5Log Pages .......................................................................................... 6Flasher Page ...................................................................................... 8Opening the Numbers Page ............................................................... 8Using the echo ........................................................................ 9Sonar Screen Settings........................................................................ 9Alarms .............................................................................................. 13Sonar Numbers ................................................................................ 15Calibration ........................................................................................ 16appendix ............................................................................... 18Specifications ................................................................................... 18Cleaning the Outer Casing ............................................................... 18Cleaning the Screen ......................................................................... 18System Settings................................................................................ 18Software License Agreement............................................................ 19Index ...................................................................................... 20