Garmin 90/140 Manuale Utente

G

ETTING

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TARTED

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U

SING

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IMULATOR

 M

ODE

The Fishfinder 90 and 140 include the latest technology 

in interpreting bottom signals; they can see through fish, 

structures, and thermoclines (shown in the weakest hues). 

Even so, large schools of fish or dense structures close to 

the bottom can affect water depth return readings.

  NOTE: If the Fishfinder is unable to track the bottom 

for any reason, the digits which indicate depth flash on 

and off to alert you that the Fishfinder is not tracking 

the bottom.

Along the top of the screen, you might see a grouping of 

intense hues. 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 (Page 14).
You can see in the previous illustration how the fish are  

indicated in a few different ways. By default, 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 also turn on the Fish Symbols setting if 

you want to see suspended targets indicated by a fish shape 

instead of arches (Page 16).

Use Simulator Mode to practice and learn the operation of 

the Fishfinder. If the Fishfinder does not detect a transducer 

at startup, it automatically starts in Simulator Mode. 
While in Simulator Mode, the Fishfinder displays a bottom 

scene, and you can control the Fishfinder (except the Gain 

and Auto Gain options) just as if it were on the water. 

If no keys are pressed for two minutes, the Fishfinder 

automatically resets to default settings while in Simulator 

Mode. 
To exit Simulator Mode, turn off the Fishfinder.