Table Of Contents - Furuno FSV-25 Operator's Manual

TABLE OF CONTENTS

FOREWORD ................................................................................................................... ix
SYSTEM CONFIGURATION .......................................................................................... xi
1. OPERATIONAL OVERVIEW .................................................................................1-1
1.1 Control Description .....................................................................................................1-1
1.1.1 Control unit .....................................................................................................1-1
1.1.2 Sub control unit (option) .................................................................................1-3
1.1.3 Remote controller (option)..............................................................................1-4
1.2 Breaker On/Off ...........................................................................................................1-4
1.3 Turning the Power On/Off...........................................................................................1-5
1.4 Lowering, Raising the Transducer..............................................................................1-6
1.4.1 Lowering the transducer.................................................................................1-6
1.4.2 Raising the transducer ...................................................................................1-7
1.4.3 How to check how far the transducer is projecting .........................................1-7
1.5 Screen Brilliance, Panel Dimmer................................................................................1-8
1.5.1 Screen brilliance.............................................................................................1-8
1.5.2 Panel dimmer .................................................................................................1-8
1.6 Display Mode, Display Division ................................................................................1-10
1.6.1 How to select a display mode.......................................................................1-11
1.6.2 Display mode picture examples ...................................................................1-11
1.7 Software Function Key .............................................................................................1-13
1.8 How to Adjust the Gain.............................................................................................1-13
1.9 How to Use the Menu ...............................................................................................1-14
2. HORIZONTAL MODE ............................................................................................2-1
2.1 Basic Operating Procedure ........................................................................................2-1
2.2 Indications and Markers .............................................................................................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.....................................................................................................................2-4
2.4.1 How to set the tilt angle ..................................................................................2-4
2.4.2 Automatic tilt...................................................................................................2-5
2.4.3 Relation between bottom echo and tilt angle .................................................2-6
2.4.4 Tilt angle for surface fish ................................................................................2-7
2.4.5 Suitable tilt angle ............................................................................................2-8
2.5 How to Measure Range and Bearing to a Target .......................................................2-8
2.6 How to Eliminate Weak Echoes .................................................................................2-9
2.6.1 Change sensitivity of TVG curve ....................................................................2-9
2.6.2 Change near gain, far gain...........................................................................2-10
2.7 How to Adjust Strong, Weak Echoes........................................................................2-11
2.7.1 AGC Near, AGC Far, AGC Distance ............................................................2-11
2.7.2 How to shorten pulse length.........................................................................2-12
2.7.3 How to suppress unwanted echoes .............................................................2-12
2.8 How to Suppress Bottom and Sea Surface Reflections in Shallow Waters .............2-13
2.9 How to Reject Sonar Interference and Noise ...........................................................2-14
2.9.1 How to identify the noise source ..................................................................2-14
2.9.2 Change TX interval.......................................................................................2-14
2.9.3 Interference rejector .....................................................................................2-15
2.9.4 Shift TX frequency ........................................................................................2-15
2.9.5 Noise limiter..................................................................................................2-16
2.9.6 Reverberation...............................................................................................2-17
v