Garmin GPSMAP 3006C Owner's Manual

Also see for GPSMAP 3006C: Specification Install guide Installation instructions Owner's manual Owner's manual

Contents

GPSMAP 3006C/3010C Owner’s Manual 81U SING SONAR > SONAR PAGE• Frequency—only appears when using a dual frequency transducer. Thisallows you to choose a sonar operation frequency. You can choose 200kHz, 50 kHz or Dual frequency (to alternate between the two frequencies).• Ultrascroll™/Scroll—adjusts the rate at which the Sonar Pages scroll fromright to left. Ultrascroll™ (default) is used when you select a scroll ratefrom 90% to 100%. Auto automatically adjusts the scroll rate according tothe boat’s speed.• Depth Line—adds a horizontal depth line across the screen that is used tomeasure the depth of underwater objects. The depth of the line appears onthe right side of the line. Press up or down on the ROCKER to control theposition of the line on the Sonar Page. To turn the Depth Line off, press theROCKER up until the setting bar is all the way at the top of the range andreads Off.Depth lineZoom—sets a screen zoom scale. The following settings are available:• Off—turns off the Zoom function.• 2x Zoom––displays the 2x zoomed picture.• 4x Zoom––displays the 4x zoomed picture.• Btm (Bottom) Lock––displays returns from the bottom up.When using this setting, “BL” appears at the bottom of the screen.• Zoom View—available when you select a Zoom scale other than Off. Youcan use the Zoom View setting to change the viewing range of a zoomeddisplay. Auto follows the water bottom. If the display is set to BottomLock, the Span setting adjusts how far off the bottom the unit shows data.• Tools—controls the display of useful sonar tools. The following options areavailable:• A-scope—when you turn on A-scope, a vertical flasher bar appears onthe far-right side of the screen. This flasher displays structure andbottom returns much the same as the Flasher Page. The horizontal widthof the A-scope signal indicates the strength of the signal.• Color Bar—shows a gradient scale of the current Color Gain setting.• Temp Graph—appears only if you have a temperature-capabletransducer. When on, this setting displays a temperature graph on thebottom of a Sonar Page that matches the scrolling data.• Setup—opens the Sonar tab.To adjust the range:On the Sonar Page, press the up RANGE key to decrease the range, orpress the down RANGE key to increase the range.The unit can be set to automatically track the bottom (Auto) or set to a user-specified depth range.