Table of ContentsIntroduction.................................................................... 1Registering Your Device ............................................................ 1Contacting Garmin Product Support .......................................... 1Manual Conventions .................................................................. 1Entering Numerical Values ........................................................ 1Getting Started............................................................... 1Keys ........................................................................................... 1Turning on the Device Automatically ......................................... 1Adjusting the Backlight ............................................................... 1Adjusting the Color Scheme ...................................................... 1Setting the Color Mode .............................................................. 1Selecting the Transducer Type .................................................. 1Adjusting the Contrast ................................................................ 1Setting the Beeper ..................................................................... 1Menu Timeout ............................................................................ 1Using Quick Adjust ..................................................................... 1Pages.............................................................................. 2Selecting a Page ........................................................................ 2Full Screen Page ....................................................................... 2Split Zoom Page ........................................................................ 2Split Frequency Page ................................................................. 2Log Page Settings ...................................................................... 2Flasher Page .............................................................................. 2Numbers Page ........................................................................... 3Resetting the Odometer ............................................................. 3Sonar............................................................................... 3DownVü Sonar View .................................................................. 3Sonar Frequencies ..................................................................... 3Adjusting the Range of the Depth Scale .................................... 3Adjusting the Zoom .................................................................... 3Locking the Screen to the Water Bottom ................................... 3Pausing the Sonar Screen ......................................................... 3Opening the Sonar History ......................................................... 3Setting the Sonar Scroll Speed .................................................. 3Showing and Adjusting the Depth Line ...................................... 4Configuring the Appearance of Suspended Targets .................. 4Turning on the A-Scope ............................................................. 4Sonar Gain and Noise Settings .................................................. 4Alarms ........................................................................................ 4Sonar Numbers Settings ............................................................ 5System Settings ......................................................................... 5System Unit Settings .................................................................. 5Restoring the Factory Default Settings ...................................... 5Calibration...................................................................... 5Setting the Keel Offset ............................................................... 5Setting the Water Temperature Offset ....................................... 5Calibrating the Water Speed Sensor ......................................... 5Appendix.........................................................................6Specifications ............................................................................. 6Cleaning the Outer Casing ......................................................... 6Cleaning the Screen .................................................................. 6Software License Agreement ..................................................... 6Index................................................................................7Table of Contents i