Garmin 520 Mode D'Emploi

u

SInG

 S

onar

 

Scroll Speed—adjust the rate at which the sonar scrolls from 

right to left (

, 

, 

, or 

). If using a 

speed-capable transducer, select 

 to have the scroll speed 

automatically adjust to your boat’s water speed.
Surface Noise—show or hide the sonar returns near the surface of 

the water. Hide surface noise to help reduce clutter.
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.

Overlay Numbers—show or hide battery voltage, water 

temperature, water speed (if your transducer is capable), cruising, 

and navigation.

  NOTE: To show water temperature or water speed, change the 

setting to Auto. If the connected transducer is capable, the data 

is shown.

To adjust advanced sonar settings, press MENU while viewing a 

sonar screen.
Range—the range of the depth scale on the right side of the screen 

(

 or 

.

Gain—controls the sensitivity of the sonar receiver (

 or 

). To see more detail, increase the Gain. If the screen 

is cluttered, decrease the Gain.
beam—when using a dual beam transducer, select a 

 or 

beam.

Frequency—when using a dual frequency transducer, select how 

the frequencies appear on screen (

, 

, 

or 

).

Zoom—zoom in to a section of the Full Screen. The zoom is off, or 

set to No Zoom by default. Four options are available:

• 

2x Zoom—twice the magnification.

•  4x Zoom—four times the magnification.
•  bottom Lock—locks the zoom window to the bottom. 
•  Split Zoom—opens the Split Zoom screen.

Depth Line—quickly reference a specific depth (

 or 

).

A-Scope—(dual frequency only) a vertical flasher along the right

side of the screen (

 or 

).