Garmin 392 Guida Utente

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ONAR

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At the top of the screen, you might see a grouping of intense colors. 

This area is surface clutter, which can be caused by waves or any 

other sonar interference at the surface of the water. Too much 

surface clutter can obscure your view of fish. You can turn down 

the Gain setting to reduce this surface clutter.
Between the bottom and the surface clutter, the fish appear as 

arches. Actual fish returns might not always appear as perfect 

arches, due to the speed, fish orientation, or other conditions. You 

can turn on the Fish Symbols setting if you want to see on-screen 

fish in a fish shape. 

The Sonar Page is where your GPSMAP 392/398/492/498 becomes 

a powerful fishfinder/flasher. To view the Sonar Page, press PAGE 

repeatedly until it shows. Fish are shown as colored arches or as 

fish icons. Thermoclines are shown as shades of blue. The sonar 

function window contains a right-to-left moving sonar image of 

the water beneath your boat. Items appear as they pass under the 

transducer. The most recent data is shown on the right side of the 

screen. The right side of the screen contains a scale reflecting the 

depth of the area being shown. The top-left corner shows the depth, 

water temperature, and speed through water (if equipped with a 

temperature or speed sensor).

Use the Fish Symbols option to view the actual sonar data, fish 

symbols, or a combination of both. Fish symbols appear as red. 
You can set the sonar display to show a split screen view of a 

zoomed portion of the sonar, split frequencies, bottom lock (display 

scaled from the bottom up) or a combination of these options. For 

example, you can choose to show dual frequency at a 2X zoom 

(Dual 2X) on one half and normal range dual frequency (Dual) 

returns on the other half. The display mode appears at the bottom 

of each sonar display.

Adjustment 

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