Garmin Fishfinder 240 Blue Manuale d'uso - Pagina 37
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Transducer Coverage
The area covered by the transmitted sound waves is determined by the
cone angle of the transducer and the water depth. Using Garmin' s standard
20° transducer, the coverage is approximately 1/3rd of the water depth.
As shown in Example 1, the coverage area at a 30 foot depth is approxi-
mately a 10 foot diameter circle. The scale below illustrates how coverage
increases as depth increases.
Coverage
1'
Diameter
2'
3'
4'
5'
6'
7'
8'
9'
10'
Depth
3'
6'
9'
12'
15'
18'
21'
24'
27'
30'
Example 1.
On the Water
On the Water
Transducer Coverage
Coverage
4"
Diameter
3'
10"
6'
15"
9'
20"
12'
25"
15'
30"
18'
35"
21'
40"
24'
45"
27'
45"
30'
8° Transducer Coverage Chart
Depth
29
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