Garmin ECHOMAP UHD 72sv Owners Manual - Page 30

Setting the Zoom Level on the Sonar Screen 1 From a sonar view, select MENU > Zoom. 2 Select an option: • To set the depth and zoom automatically, select Auto. TIP: You can select for more options. • To set the depth range of the magnified area manually, select Manual > , select View Up or View Down to set the depth range of the magnified area, and select Zoom In or Zoom Out to increase or decrease the magnification of the magnified area. • To magnify one particular area of the screen, select Magnify. TIP: You can drag the magnification box to a new location on the screen. • To zoom in on the sonar data from the bottom depth, select Bottom Lock. To cancel the zoom, deselect the option. Setting the Scroll Speed You can set the rate at which the sonar image moves across the screen. A higher scroll speed shows more detail until there is no additional detail to show, at which point it starts stretching out the existing detail. This can be useful while moving or trolling, or when you are in very deep water where the sonar is pinging very slowly. A lower scroll speed displays sonar information on the screen longer. For most situations, the Default setting provides a good balance between a quickly scrolling image and less distorted targets. 1 From a sonar view, select MENU > Sonar Setup > Scroll Speed. 2 Select an option: • To adjust the scroll speed automatically using speed-overground or water speed data, select Auto. The Auto setting selects a scroll rate to match the boat speed, so targets in the water are drawn with the correct aspect ratio and appear less distorted. When viewing Garmin ClearVü or SideVü sonar views or searching for structure, it is recommend to use the Auto setting. • To scroll faster, select Up. • To scroll more slowly, select Down. Adjusting the Range of the Depth or Width Scale You can adjust the range of the depth scale traditional and Garmin ClearVü sonar views and the range of the width scale for the SideVü sonar view. Allowing the device to adjust the range automatically keeps the bottom within the lower or outer third of the sonar screen, and can be useful for tracking a bottom that has minimal or moderate terrain changes. Manually adjusting the range enables you to view a specified range, which can be useful for tracking a bottom that has large terrain changes, such as a drop-offs or cliffs. The bottom can appear on the screen as long as it appears within the range you have set. 1 From a sonar view, select MENU > Range. 2 Select an option: • To allow the chartplotter to adjust the range automatically, select Auto. • To increase or decrease the range manually, select Up or Down. TIP: From the sonar screen, you can select or to manually adjust the range. TIP: When viewing multiple sonar screens, you can select SELECT to choose the active screen. Sonar Appearance Settings From a sonar view, select MENU > Sonar Setup > Appearance. Color Scheme: Sets the color scheme. A-Scope: Displays a vertical flasher along the right side of the screen that shows instantaneously the range to targets along a scale. Edge: Highlights the strongest signal from the bottom to help define the hardness or softness of the signal. Fish Symbols: Sets how the sonar interprets suspended targets. Shows suspended targets as symbols and background sonar information. Shows suspended targets as symbols with target depth information and background sonar information. Shows suspended targets as symbols. Shows suspended targets as symbols with target depth information. Sonar Alarms NOTE: Not all options are available on all transducers. Select Settings > Alarms > Sonar. Shallow Water: Sets an alarm to sound when the depth is less than the specified value. Deep Water: Sets an alarm to sound when the depth is greater than the specified value. FrontVü Alarm: Sets an alarm to sound when the depth in front of the vessel is less than the specified value, which can help you avoid running aground (Setting the FrontVü Depth Alarm, page 26). This alarm is available only with Panoptix FrontVü transducers. Water Temp.: Sets an alarm to sound when the transducer reports a temperature that is 2°F (1.1°C) above or below the specified temperature. Fish Fish: Sets an alarm to sound when the device detects a suspended target. • sets the alarm to sound when fish of all sizes are detected. • sets the alarm to sound only when medium or large fish are detected. • sets the alarm to sound only when large fish are detected. Advanced Sonar Settings NOTE: Not all options and settings apply to all models and transducers. From a sonar view, select MENU > Sonar Setup > Advanced. Interference: Adjusts the sensitivity to reduce the effects of interference from nearby sources of noise. The lowest interference setting that achieves the desired improvement should be used to remove interference from the screen. Correcting installation issues that cause noise is the best way to eliminate interference. Surface Noise: Hides surface noise to help reduce clutter. Wider beam widths (lower frequencies) can show more targets, but can generate more surface noise. Color Gain: See Adjusting the Level of Detail, page 23. TVG: Adjusts the appearance of returns to compensate for weakened sonar signals in deeper water, and reduces the appearance of noise near the surface. When the value of this setting is increased, the colors associated with low-level noise and fish targets appear more consistent through 24 Sonar Fishfinder