Garmin 100 User Manual

29

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 approximately
a 10 foot diameter circle.  The scale below illustrates how coverage
increases as depth increases.

1'

10'

9'

8'

7'

6'

5'

4'

3'

2'

3'

6'

9'

12'

15'

18'

21'

24'

27'

30'

Depth

 Example 1.

Coverage
Diameter

4"

10"

15"

20"

25"

30"

35"

40"

45"

45"

3'

6'

9'

12'

15'

18'

21'

24'

27'

30'

8° Transducer Coverage Chart

Depth

Coverage
Diameter

100 On the Water.p65

2/16/00, 10:08 AM

29