iv
TABLE OF CONTENTS
FOREWORD ..................................................................................................................vii
SYSTEM CONFIGURATION ..........................................................................................ix
1. OPERATIONAL OVERVIEW ................................................................................ 1-1
1.1 Description of Controls...............................................................................................1-1
1.1.1 Control Units ..................................................................................................1-1
1.1.2 Remote Control Unit CH-256 (option)............................................................1-2
1.2 How to Turn the Power On/Off...................................................................................1-2
1.2.1 How to turn the power on...............................................................................1-2
1.2.2 How to turn the power off...............................................................................1-3
1.3 How to Raise/Lower the Transducer..........................................................................1-3
1.3.1 How to lower the transducer ..........................................................................1-3
1.3.2 How to raise the transducer ...........................................................................1-4
1.4 How to Adjust the Brilliance .......................................................................................1-4
1.5 How to Select a Display Mode ...................................................................................1-5
1.6 How to Adjust the Gain ..............................................................................................1-7
1.7 How to Use the Menu.................................................................................................1-8
1.8 Noise and Interference...............................................................................................1-9
1.8.1 Sea Surface Reflections (Horizontal Mode)...................................................1-9
1.8.2 Wake Noise (Horizontal Mode) ......................................................................1-9
1.8.3 Sidelobe Echo/False Echo (Horizontal Mode) .............................................1-10
1.8.4 False Echo (Vertical Mode)..........................................................................1-10
1.8.5 Interference from other equipment...............................................................1-11
1.8.6 Interference from marine life ........................................................................1-11
1.8.7 How to erase weak echoes..........................................................................1-12
1.9 How to Use the Cursor.............................................................................................1-12
1.10 How to Adjust the Range .........................................................................................1-13
1.11 How to Use the Train Controls.................................................................................1-14
1.11.1 How to change the train direction.................................................................1-14
1.11.2 Train controls for horizontal mode................................................................1-14
1.11.3 Train controls for vertical mode....................................................................1-15
1.11.4 Train control for echo sounder mode ...........................................................1-15
1.12 How to Use the Tilt Controls ....................................................................................1-16
1.12.1 Tilt control for horizontal modes...................................................................1-16
1.12.2 Tilt control for vertical mode.........................................................................1-16
1.12.3 Tilt control for echo sounder mode...............................................................1-16
1.13 How to Use the Sector Function ..............................................................................1-17
1.13.1 How to set and use a sector with horizontal mode.......................................1-17
1.13.2 How to set and use a sector with vertical mode...........................................1-18
1.13.3 How to set a sector center (vertical mode only)...........................................1-19
1.14 How to Use the Event Marker ..................................................................................1-20
1.14.1 How to inscribe an event mark.....................................................................1-20
1.14.2 How to delete event marks...........................................................................1-2
1.15 How to Use the Range/Bearing Marker ...................................................................1-21
1.16 How to Use the Tracking Function...........................................................................1-23
1.16.1 How to select the tracking method...............................................................1-23
1.16.2 Position tracking function .............................................................................1-23
1.16.3 Echo tracking function..................................................................................1-24
1.16.4 Reverse tracking function (Horizontal mode only) .......................................1-25
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