Garmin 240 Manual De Usuario

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The transducer acts as the eyes and ears of your new sonar.  Proper 

transducer selection and installation are critical to the operation of your 
unit.  

The transducer transmits sound waves toward the bottom in a cone 

shape. The larger the cone angle the larger the coverage area at a given 
depth. While it is good to see as large of an area as possible, it is best to 
select a transducer that suits the water that you are on. 

A wide cone angle transducer works best in shallow water.  The wide 

cone angle provides a large coverage area, but at a decreased bottom 
resolution.  In deeper water this can result in a large dead zone where 
fish cannot be seen.  

A narrow cone angle transducer is better suited to deep-water installa-

tions.  The narrow cone angle provides a smaller viewing area (compared 
to a wide cone angle transducer at the same depth) with improved bottom 
resolution and a smaller dead zone.  

Included in the Optional Package is a 20° cone angle, temperature sens-

ing, transom mount transducer.  This transducer provides good all-around 
performance.  A variety of optional transducers are available from your 
local dealer or GARMIN.   

    

X

X

dead zone

fish not seen

Wide cone angle

Narrow cone angle

190-00155-10 Rev A.indd

08/16/00, 2:45 PM

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