Garmin 90/140 Manuale Utente

G

ETTING

 S

TARTED

 > 

U

NDERSTANDING

 

THE

 F

ISHFINDER

 S

CREEN

Experimentation and experience are the keys to successfully 

interpreting your Fishfinder screen. We recommend that you 

take your Fishfinder out on familiar water, and spend time 

learning to interpret what you see on the Fishfinder 90 or 

140 screen.
Think of the Fishfinder screen as if you took a picture 

from the side of an aquarium in your home. You can see 

how deep a fish is in the water (how close it is to the top 

or bottom), but you cannot tell where the fish is located 

horizontally in the water (whether it is near the front or the 

back of the aquarium). Remember this when you are trying 

to locate exactly where something is in the water.

The strongest sonar returns appear on your screen as solid, 

dark areas. The weakest returns appear less intense, less 

solid. The bottom of the water body returns the strongest 

signal, so you can identify the bottom as the continuous, 

solid line running across the bottom of the screen. The 

strength of the sonar return can also help you interpret the 

hardness of the bottom. The thicker the bottom line, the 

harder the bottom.