Garmin Fishfinder 240 Blue Instrukcja obsługi - Strona 9

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Garmin Fishfinder 240 Blue Instrukcja obsługi

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Transducers

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.

Included in the Optional Package is a 200/50kHz frequency (10°/40°

cone angle), depth and temperature sensing, transom mount transducer.

This transducer provides good all-around performance. Other optional

dual frequency transducers are available from your local dealer or GARMIN.

The transducer transmits sound waves toward the bottom in a cone

shape. The wider 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 frequency setting that suits the water that you are on.

With a dual frequency transducer, you may select either a 200kHz

frequency, a 50kHz frequency or both. The 50kHz frequency setting

provides a wide cone angle. This wide cone angle produces a large coverage

area, but less detailed bottom resolution. In areas where bottom contours

change quickly, this can result in "dead zones" where fish cannot be seen.

In contrast, the 200kHz frequency setting provides a narrow cone

angle. This narrow cone angle produces a smaller viewing area (compared

to a wide cone angle at the same depth), but with improved bottom

resolution and a smaller dead zone.

The Dual frequency setting will provide you the most accurate depth

and fish returns by transmitting signals at both 200kHz and 50kHz.

Installation

Transducers

50 kHz

wide cone angle

200 kHz

narrow cone angle

dead zone

fish not seen