v
TABLE OF CONTENTS
FOREWORD................................................................................................................... xi
SYSTEM CONFIGURATION ......................................................................................... xv
1. OPERATIONAL OVERVIEW.................................................................................1-1
1.1 Controls Overview ......................................................................................................1-1
1.1.1 Control Unit ....................................................................................................1-1
1.1.2 Remote controller (Option) .............................................................................1-4
1.2 Breaker On/Off ...........................................................................................................1-4
1.3 Turning the Power On/Off...........................................................................................1-5
1.4 Raising/Lowering 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 transducer protrusion ...............................................................1-7
1.5 Screen Brilliance and Panel Dimmer..........................................................................1-8
1.5.1 How to adjust the screen brilliance.................................................................1-8
1.5.2 How to adjust the panel dimmer.....................................................................1-8
1.6 Display Modes..........................................................................................................1-10
1.6.1 How to select a display mode.......................................................................1-10
1.6.2 How to register a display mode ....................................................................1-11
1.6.3 Display overview ..........................................................................................1-12
1.7 Software Function Keys............................................................................................1-13
1.8 How to Adjust the Gain.............................................................................................1-14
1.9 Menu Overview.........................................................................................................1-15
2. SLANT MODE........................................................................................................2-1
2.1 Basic Operating Procedure ........................................................................................2-1
2.2 Slant Display Overview...............................................................................................2-2
2.3 Display Range ............................................................................................................2-3
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 ............................................................................................2-7
2.5 Sweep Angle ..............................................................................................................2-8
2.5.1 How to set the sweep angle ...........................................................................2-8
2.5.2 Auto sweep function .......................................................................................2-9
2.6 How to Measure Range and Bearing to a Target .....................................................2-10
2.7 How to Eliminate Weak Echoes ...............................................................................2-11
2.7.1 How to set the TVG curve ............................................................................2-11
2.7.2 How to set near and far gain ........................................................................2-12
2.8 How to Adjust Strong and Weak Echoes..................................................................2-13
2.8.1 How to set AGC (Near, Far and Distance) ...................................................2-13
2.8.2 Seabed AGC ................................................................................................2-14
2.8.3 How to adjust the pulse length .....................................................................2-14
2.8.4 Noise suppression........................................................................................2-15
2.9 How to Suppress Bottom and Sea Surface Reflections in Shallow Waters .............2-16
2.10 How to Reject Sonar Interference and Noise ...........................................................2-17
2.10.1 How to identify the noise source ..................................................................2-17
2.10.2 Change the TX interval.................................................................................2-17
2.10.3 Interference rejector .....................................................................................2-18
2.10.4 How to shift the TX frequency ......................................................................2-18