Garmin GPSMAP 546 Owner's Manual

Also see for 531s - Transducer: Important safety information Owner's manual Installation instructions Reference guide Owner's manual

Contents

Garmin GPSMAP 546 Owner's Manual Manual pdf 63 page image

Using SonarGPSMAP 400/500 Series Owner’s Manual 57Setting Up SonarUse the Sonar Setup screen to define and adjust settings universal to all sonarscreens.From the Home screen, select Sonar > Sonar Setup.Scroll Speed—adjust the rate at which the sonar scrolls from right to left(Ultrascroll™, fast, Medium, or Slow). If using a speed-capable transducer,select auto to have the scroll speed automatically adjust to the water speed ofyour boat.Surface Noise—show or hide the sonar returns near the surface of the water.Hide surface noise to help reduce clutter.depth Line—quickly reference a specific depth (Show or Hide). To set thedepth of the reference line, select Show, and then press up or down on theRocker.a-Scope—display a vertical flasher along the right side of the screen.data bars—show or hide depth, water temperature, water speed (if yourtransducer is capable), battery voltage, cruising, navigation, and the compasstape (page 9).NOTE: To display water temperature or water speed, the connected transducermust be capable of measuring water temperature, water speed, or both. Selectauto to display the values.appearance—customize the display of fish symbols, whiteline, and the sonarcolor scheme.• fish Symbols—set how the sonar interprets suspended targets.Select to show suspended targets as symbols with background sonarinformation.Select to show suspended targets as symbols with background sonarinformation and target depth information.Select to show suspended targets as symbols.Select to show suspended targets as symbols with target depthinformation.• whiteline—highlights the strongest signal from the bottom to help identifythe hardness or softness.◦ Off (default)—turns off whiteline.◦ High—the most-sensitive setting. Almost all strong returns arehighlighted in white.◦ Medium—many strong returns are highlighted in white.◦ Low—the least-sensitive setting. Only the strongest returns arehighlighted in white.Color Scheme—select white or blue. This affects the background on allsonar screens, but does not change the Temp Log or the Depth Log screen.Advanced Sonar SettingsTo adjust advanced sonar settings, press MENU while viewing a sonar screen.Pause Sonar—Stops the scrolling of the sonar screen.To mark a waypoint at a selected depth:1. While viewing a sonar screen, press MENU > Pause Sonar.2. Use the Rocker to position the pointer over the fish or structure you wantto mark.