Eusonar Praktik 6 Pro 2, Руководство пользователя

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The electronic unit represents the structural design with two control buttons, transparent
window and tightly closed cable not less than two meters long. The level of leak resistance is
compliant with IP 67 standards.
Sensor-converter and battery compartment
The sensor-converter works simultaneously as an acoustic wave emitter as a receiver
(microphone) of echo-signal objects reflected from the bottom. The sensor design is frost-
resistant, leak-proof (IP68). The sensor is screwed into the battery compartment. Pressurization of
the battery compartment is performed with assistance of the sealing silicone ring. When installing
the power supply unit АА it is necessary to observe polarity.
It is advisable to install he battery at home at a warm place. It will ensure avoidance of
appearance of the condensate water in the battery compartment. Take care of the sensor.
Unfortunately it does not float. It sinks and it is expensive. Besides, one should protect it from
severe blows over hard objects.
Under conditions of winter fishing it is desirable to lower the sensor below the underwater
ice edge to avoid appearance of false signals reflected from the vertical walls of the ice-hole.
To save the battery service life it is not recommended to leave the sensor-converter in frost:
when operating is must be wholly into the water, the temperature of which is always positive, and
when the sensor is not used – in a warm place under the clothes.
For correct depth measurement the sensible area of the sensor must be located strictly in
parallel to the water surface. It should be remembered that the bottom depth and other objects are
measured not relatively the water surface but to the sensor, that is why at its big depth the figures
shown by the sonar can differ considerably from the true ones.
The sonar is equipped with the special cable with the cover made of silicone resin,
connecting the electronic unit and the battery compartment with the sensor. This cable will remain
elastic even in the most severe frosts, with which an ordinary rubber cable will lose its elasticity
and can easily crack, thus losing its impermeability.