Manual de uso Navman FISH 450 Tricolor Sonda de pesca

Manual de uso

4

FISH450 Tricolor FISHFINDER Installation and Operation Manual

NAVMAN

1 Introduction

Congratulations on choosing the NAVMAN FISH450 Tricolor fishfinder. For maximum benefit, please

read this manual carefully before installation and use. Special terms are explained in Appendix C.

The NAVMAN FISH450 Tricolor

The FISH450 Tricolor is an ultrasonic fishfinder with powerful software and a three colour display. As well

as detecting fish the unit measures water depth, boat speed, water temperature and battery voltage and

has two distance logs (trip and total with one displayed at a time). With an optional fuel kit the FISH450

Tricolor is also a sophisticated yet easy to use fuel computer.

How the NAVMAN FISH450 Tricolor finds fish and determines the depth

An installed FISH450 Tricolor has two parts:

- a transducer attached to the hull

- the display unit.

The transducer generates an ultrasonic (sound) pulse, which travels down

towards the bottom. When the sound pulse meets an object, such as a

fish or the bottom, some of the pulse is reflected back up towards the boat

and is received by the transducer. The depth of an object can be calculated

by measuring the time between sending the pulse and receiving its echo.

The display unit analyses the reflections from each pulse, removes

unwanted reflections (from bubbles and other noise) and displays what is

in the water under the boat. The display shows three colours: Blue for the

strongest reflections, Red for medium and Green for the weakest reflections

(see section 3 - 2). These colours help users better interpret what is in the water.

There are several reasons the returned echo strength can vary. Larger fish usually return stronger echos, as

do fish in the centre of the beam where the pulse is stronger. Reasons for weak echos include the fish or

object being in deep water or turbid water, or in the edge of the beam where the pulse is weaker.

The unit will detect the bottom down to 1000 feet (300 metres), depending on the clarity of the water and

measures depths to an accuracy of 2%.

Assisting with navigation

The FISH450 Tricolor can be used to find fish, to locate features on the bottom such as reefs or wrecks

and to help recognise favourite fishing spots from the profile of the bottom. Use the FISH450 Tricolor to

assist navigation by following the depth contours marked on charts.

IMPORTANT NOTE ON USE - While the FISH450 Tricolor can be used as an aid to navigation, its

accuracy can be influenced by many factors, including the location of the transducer. It is the user’s

responsibility to ensure the unit is installed and used correctly.

How to find fish

Underwater features like reefs, wrecks and rocky outcrops attract fish. Use the FISH450 Tricolor to find

these features, then look for fish by passing over the feature slowly several times using the Zoom screen

(See section 3-1). Where there is a current, the fish will often be found downstream of the feature.

For deep sea fishing, a rapid change in temperature may indicate the edge of a warm or cold current. The temperature

difference may form a barrier which fish tend not to swim through. Search for fish either side of the barrier.

Cleaning and maintenance

The FISH450 Tricolor should be cleaned with a damp cloth or mild detergent. Avoid abrasive cleaners

and petrol or other solvents.

Always cover or remove the stern mounted Aquaducer when repainting the hull. If painting over a through

hull transducer with antifouling then use only one coat of paint. When repainting the transducer remove

previous coats by lightly sanding.

Temperature warning

Do not expose the unit to temperatures exceeding 50°C (122°F) or the LCD may not be useable until it cools down.

Never leave the unit exposed to high temperatures even for a few minutes. (e.g. on the dashboard of a car).

Puntuación

Más sobre este manual

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Especificaciones

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