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iv
TABLE OF CONTENTS
FOREWORD....................................................................................................................... vii
SYSTEM CONFIGURATION
............................................................................................ ix
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 ........................................................................................................ 1-4
1.4 Raising, Lowering the Transducer............................................................................. 1-5
1.4.1 Lowering the transducer ................................................................................. 1-5
1.4.2 Raising the transducer.................................................................................... 1-5
1.5 Choosing a Display ................................................................................................... 1-6
1.6 Adjusting Screen Brilliance, Panel Dimmer................................................................ 1-7
1.7 Adjusting the Gain..................................................................................................... 1-7
1.8 Basic Menu Operation............................................................................................... 1-8
2. HORIZONTAL MODE.................................................................................................. 2-1
2.1 Operational Overview................................................................................................ 2-1
2.2 Typical Horizontal Mode Display ............................................................................... 2-2
2.3 Choosing the Range.................................................................................................. 2-3
2.4 Choosing Sector Width.............................................................................................. 2-4
2.5 Choosing Train Center .............................................................................................. 2-5
2.6 Choosing the Tilt Angle ............................................................................................. 2-6
2.6.1 Choosing the tilt angle .................................................................................... 2-6
2.6.2 Relation between tilt angle and echo .............................................................. 2-7
2.6.3 Tilt angle for surface fish................................................................................. 2-8
2.6.4 Suitable tilt angle ............................................................................................ 2-9
2.7 Choosing the Training Speed ...................................................................................2-10
2.8 Finding Echo Position with the Cursor......................................................................2-10
2.9 Event Marker............................................................................................................2-11
2.9.1 Inscribing the event marker............................................................................2-11
2.9.2 Deleting all event markers..............................................................................2-12
2.10 Depth and Horizontal Range Markers.......................................................................2-12
2.11 Adjusting the Picture ................................................................................................2-13
2.11.1 Suppressing bottom and surface reflections ..................................................2-13
2.11.2 Suppressing bottom tail .................................................................................2-14
2.11.3 Displaying weak echoes clearly ....................................................................2-14
2.11.4 Erasing weak echoes.....................................................................................2-17
2.11.5 Enlarging fish echoes (horizontal expansion display).....................................2-18
2.12 Target Lock ..............................................................................................................2-19
2.12.1 Choosing target lock mode ............................................................................2-19
2.12.2 Manual reverse mode ....................................................................................2-19
2.12.3 Position mode................................................................................................2-20
2.12.4 Echo mode ....................................................................................................2-21