Garmin gpsmap 5212 用户手册

Using Sonar

Use the Sonar Setup screen to define and adjust settings for all sonar screens.
From the Home screen, touch 

 > 

.

Scroll Speed—adjusts the rate at which the sonar scrolls from right to left (Ultrascroll

™

, Fast, 

Medium, or Slow). If you are using a speed-capable transducer, touch 

 to have the scroll speed 

automatically adjust to the water speed of your boat.
Surface Noise—shows or hides 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). When Show is selected, touch and 

drag the line to set the depth of the reference line.
a-Scope—creates a vertical flasher along the right side of the screen (

 or 

).

overlay Numbers—shows or hides water temperature, battery voltage, water speed (if your 

transducer is capable), and navigation. If auto is selected and the transducer is capable, the data is 

shown.

From the Home screen, touch 

 > 

> 

.

Fish Symbols—sets how the sonar interprets suspended targets.

The chartplotter does not interpret the sonar return data (default). 

 

Suspended targets appear as symbols. Background sonar information appears, making the 

distinction between fish and structure easier.
Suspended targets appear as symbols with background information shown. The target 

depth of each symbol is also indicated.
Suspended targets appear as symbols. No background information appears. 

 

Suspended targets appear as symbols with no background information shown. The target 

depth of each symbol is indicated.

Whiteline—highlights the strongest signal from the bottom to help identify its hardness or softness. 

off—(default) Whiteline is disabled.
High—the most sensitive setting. Almost all strong returns are highlighted in white.
Medium—many strong returns are highlighted in white.
Low—the least sensitive setting. Only the strongest returns are highlighted in white.

Color Scheme—choose white (black, if using night mode colors) or blue. This affects the 

background on all sonar screens, but does not change the Temp Log screen.