Contents 
PREFACE ........................................................................................................................... I 
●BEFORE OPERATION● ............................................................................................... II 
●PRECAUTION UPON EQUIPMENT OPERATION● .................................................. III 
EXTERNALS OF EQUIPMENT ........................................................................................ V 
GLOSSARY ....................................................................................................................... VI 
1. OVERVIEW .................................................................................................................. 1-1 
1.1 FUNCTION ................................................................................................................ 1-3 
1.1.1 Function of This System .................................................................................... 1-3 
1.2 FEATURES ................................................................................................................ 1-4 
1.3 COMPOSITION ........................................................................................................... 1-5 
1.4 CONSTRUCTION ........................................................................................................ 1-7 
2. NAME AND FUNCTIONS ........................................................................................... 2-1 
2.1 NAME AND FUNCTIONS OF KEYBOARD ...................................................................... 2-3 
2.2 DISPLAY AND NAME OF SCREEN ................................................................................ 2-4 
2.2.1 Tidal Current Display ....................................................................................... 2-4 
2.2.2 Ship Speed Display ......................................................................................... 2-10 
2.2.3 Track Plot Display ......................................................................................... 2-122 
2.2.4 Graph Display ............................................................................................... 2-144 
2.2.5 Fish Finder Display....................................................................................... 2-166 
2.2.6 Tidal Profile Display ..................................................................................... 2-188 
3. OPERATION METHOD ............................................................................................... 3-1 
3.1 GENERAL FLOW CHART ............................................................................................ 3-3 
3.1.1 Power ON and Date/Time Setting ..................................................................... 3-4 
3.1.2 Display Selecting ............................................................................................... 3-4 
3.1.3 Current Measuring Depth Setting .................................................................... 3-5 
3.1.4 Fish Finder Display Range Setting ................................................................... 3-5 
3.1.5 Power OFF ........................................................................................................ 3-5 
3.2 MENU COMPOSITION ................................................................................................ 3-6 
3.2.1 Standard Menu Composition ............................................................................. 3-7 
3.2.2 Selection Frame Menu Composition .................................................................. 3-8 
3.2.3 Basic Operation of Menu ................................................................................... 3-9 
3.3 PREPARATION FOR OPERATION ................................................................................ 3-12 
3.3.1 Adjusting Screen Brightness ........................................................................... 3-12 
3.3.2 Lighting Operation Panel and Adjusting Operation Sound ............................. 3-12 
3.3.3 Changing the Display color of Screen at Daytime and Night .......................... 3-12