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iii
TABLE OF CONTENTS
FOREWORD ........................................................................................................ vi
SYSTEM CONFIGURATION.............................................................................. viii
1. OPERATIONAL OVERVIEW.........................................................................1-1
1.1 Control Description ....................................................................................................1-1
1.2 Remote Controller......................................................................................................1-2
1.3 Turning the Power On/Off ..........................................................................................1-3
1.3.1 Power on.........................................................................................................1-3
1.3.2 Power off......................................................................................................... 1-3
1.4 Raising, Lowering the Transducer..............................................................................1-4
1.4.1 Lowering the transducer..................................................................................1-4
1.4.2 Raising the transducer ....................................................................................1-4
1.5 Adjusting Screen Brilliance, Panel Dimmer................................................................1-5
1.6 Choosing a Display.................................................................................................... 1-6
1.7 Choosing a Frequency............................................................................................... 1-9
1.8 Mix Display.............................................................................................................. 1-11
1.9 Adjusting the Gain ................................................................................................... 1-13
1.10 Menu Overview........................................................................................................1-15
2. HORIZONTAL MODE.................................................................................... 2-1
2.1 Operational Overview ................................................................................................2-1
2.2 Typical Horizontal Mode Display................................................................................2-2
2.3 Choosing a Range..................................................................................................... 2-3
2.4 Choosing Sector Width.............................................................................................. 2-4
2.5 Choosing Train Center...............................................................................................2-5
2.6 Choosing a Tilt Angle................................................................................................. 2-5
2.6.1 Tilt angle for surface fish .................................................................................2-6
2.6.2 Distinguishing fish echo from bottom echo in coastal waters...........................2-6
2.6.3 Suitable tilt angle.............................................................................................2-8
2.7 Choosing Training Speed...........................................................................................2-9
2.8 Changing Training Direction.......................................................................................2-9
2.9 Finding Echo Position with the Cursor ..................................................................... 2-10
2.10 Event Marker ........................................................................................................... 2-11
2.11 Depth and Horizontal Range Markers...................................................................... 2-12
2.12 Adjusting the Picture................................................................................................2-13
2.12.1 Suppressing bottom and surface reflections..................................................2-13
2.12.2 Suppressing bottom tail................................................................................. 2-14
2.12.3 Displaying weak echoes clearly..................................................................... 2-14
2.12.4 Erasing weak echoes .................................................................................... 2-16
2.12.5 Suppressing interference from marine life .....................................................2-17
2.12.6 Enlarging fish echoes (horizontal expansion display).....................................2-18
2.13 Target Lock..............................................................................................................2-19
2.13.1 Choosing a target lock mode......................................................................... 2-19
2.13.2 Position mode ............................................................................................... 2-19
2.13.3 Echo mode....................................................................................................2-20