Lorenz FISH PRO HD+, Руководство пользователя

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9 User Manual
1. Overview
The Fish Finder consists of a high power transmitter, sensitive receiver and a
transducer. The Fish Finder sends an electrical pulse to the transducer which
contains an element that converts the pulse into acoustic (sound) wave which
is sent through the water. As this wave travels from the transducer to the
bottom, it may strike fish, structures, thermoclines (temperature changes in
the water). When the wave strikes an object(s) a certain amount of the wave
is reflected back to the transducer depending on the composition and shape
of the object. When the reflected wave is returned to the transducer it is
converted into an voltage and is amplified by the receiver, processed and
sent to the display. The speed of sound in water is roughly 4800 ft./sec, so
the time lapse between the transmitted signal and the received echo can be
measured and the distance to the object determined.
Fig. 1 - Fish Finder working principle
1.1 FISH FINDER
Features & Functions
♦
A-Scope (displays Sonar Echo in real time)
♦
2X and 4X Zoom (capability to magnify any part of the Echogram
image of a fixed rate)
♦
Full auto to manual, working preset modes (Fish, Cruise)
♦
Bottom Lock (capability to magnify a user defined range around the
bottom)
♦
White Line (help distinguish between fish and bottom, when fish are
swimming close to the bottom)
♦
STC (allows reducing or eliminating the surface clutter)
♦
Interference Rejection (allows reducing interference from other
boats/Fish Finders)