Garmin gpsmap 192c Manuale Utente

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The Sounder Module can help you determine whether the bottom is 

hard or soft. When the sonar sound waves are reflected back by the 

bottom, a hard bottom returns a stronger signal than a soft bottom. 

A thin whiteline indicates a softer bottom, while a thick whiteline 

indicates a harder bottom. Normally, a red line is used to show the 

point where water meets the bottom. This line follows the bottom 

contour, along with any significant objects lying on the bottom. 

The unit uses the whiteline function to make the bottom layer 

information easier to distinguish.

A rough definition of a thermocline is a break in water where 

the water temperature changes faster than the water above it. 

Thermoclines are shown as the weakest colors.
One of the unique features offered by Garmin is See-Thru

®

 

technology, which allows the GPSMAP 192C to hear both weak 

and strong signals simultaneously so as to identify fish returns 

under the toughest conditions, such as suspended in thermoclines 

or even hiding near structures. See-Thru technology allows the 

Sounder Module to see through thermoclines and locate fish.