Table Of Contents - Furuno FSV-85 MARK-2 Operator's Manual

TABLE OF CONTENTS

FOREWORD .................................................................................................................... x
SYSTEM CONFIGURATION .......................................................................................... xi
1. OPERATIONAL OVERVIEW .................................................................................1-1
1.1 Controls Overview ......................................................................................................1-1
1.1.1 Control Unit ....................................................................................................1-1
1.1.2 Sub control unit (option) .................................................................................1-4
1.1.3 Remote controller (Option) .............................................................................1-4
1.2 Turning the Power On/Off...........................................................................................1-5
1.3 Raising/Lowering the Transducer...............................................................................1-5
1.3.1 Lowering the transducer.................................................................................1-6
1.3.2 Raising the transducer ...................................................................................1-7
1.3.3 How to check transducer protrusion ...............................................................1-7
1.4 Screen Brilliance and Panel Dimmer..........................................................................1-8
1.5 Display Modes ..........................................................................................................1-10
1.5.1 How to select a display mode.......................................................................1-11
1.5.2 Display mode pictures ..................................................................................1-12
1.6 Software Function Keys............................................................................................1-14
1.7 How to Adjust the Gain.............................................................................................1-15
1.8 How to Use the Menu ...............................................................................................1-16
2. HORIZONTAL MODE ............................................................................................2-1
2.1 Basic Operating Procedure ........................................................................................2-1
2.2 Horizontal Display Overview.......................................................................................2-2
2.2.1 Horizontal mode, full-screen display ..............................................................2-2
2.2.2 Horizontal2 mode ...........................................................................................2-3
2.3 Display Range ............................................................................................................2-4
2.4 Tilt Angle.....................................................................................................................2-5
2.4.1 How to set the tilt angle ..................................................................................2-5
2.4.2 Automatic tilt...................................................................................................2-5
2.4.3 Relation between bottom echo and tilt angle .................................................2-7
2.4.4 Tilt angle for surface fish ................................................................................2-8
2.4.5 Suitable tilt angle ............................................................................................2-8
2.5 How to Measure Range and Bearing to a Target .......................................................2-9
2.6 How to Eliminate Weak Echoes .................................................................................2-9
2.7 How to Adjust Strong and Weak Echoes..................................................................2-12
2.7.1 AGC..............................................................................................................2-12
2.7.2 Near AGC.....................................................................................................2-12
2.7.3 2nd AGC.......................................................................................................2-13
2.7.4 How to shorten pulse length.........................................................................2-14
2.8 How to Suppress Bottom and Sea Surface
Reflections in Shallow Waters ..................................................................................2-15
2.9 How to Reject Sonar Interference and Noise ...........................................................2-16
2.9.1 How to identify the noise source ..................................................................2-16
2.9.2 Change TX interval.......................................................................................2-16
2.9.3 Interference rejector .....................................................................................2-17
2.9.4 Shift TX frequency ........................................................................................2-17
2.9.5 Noise limiter..................................................................................................2-18
2.9.6 Reverberation...............................................................................................2-18
2.9.7 Echo average ...............................................................................................2-18
2.9.8 Reference bearing in frequency shift............................................................2-19
2.9.9 How to suppress sidelobes ..........................................................................2-19
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