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Furuno CH-250 manual This page intentionally left blank

Contents

Color LCD Searchlight Sonar 00080894802 Safety Instructions TFT LCD Table of Contents Menu Operation Features Foreword Usage Precautions System Configuration Viii Operational Overview Control Description Remote Controller Remote controller Power off Turning the Power On/OffPower on Raising the transducer Raising, Lowering the TransducerLowering the transducer Adjusting Screen Brilliance, Panel Dimmer Brilliance, panel dimmer dialog box Selecting a Display Horizontal Expanded Horizontal Adjusting the Gain Basic Menu Operation Dialog box for deleting track Horizontal Mode Operational Overview Typical Horizontal Mode Display Color Selecting the Range Selecting Sector Width One-touch selection of 360 sector Selecting Train Center Selecting the Tilt Angle How to discriminate fish echoes from the bottom Bottom echo and tilt angleCase1 Tilt angle 30 to Case2 Tilt angle 10 to Tilt angle for surface fish Points to consider Suitable tilt angle Tilt angle and beam coverage Selecting the Training Speed Finding Echo Position with the Cursor Event Marker Inscribing the event marker Depth and Horizontal Range Markers Deleting all event markers Adjusting the Picture Suppressing bottom and surface reflections Suppressing bottom tail Displaying weak echoes clearly To adjust TVG Erasing weak echoes Enlarging fish echoes expand horizontal display Train center direction Position after expansion Remarks Target Lock Setting target lock modeManual reserve mode Position mode To use the position mode Echo mode Automatic echo tracking mode Manual echo tracking mode Horizontal Menu Overview Horizontal menu description LOG How the horizontal mode picture is painted Interpreting the Horizontal Display Sample echo displays Bottom echoes Fish schools Bottom Sea surface reflections Wake Sidelobe echo false echo Noise and interference Combination display examples Horizontal/history display Horizontal/video plotter display 28 Horizontal/Video Plotter display Horizontal/strata display Press the key to display the horizontal/strata display Color bar for the strata display Flat bottom and strata display Projection in fore direction and strata display 31 Projection in fore direction and strata display Vertical FAN Mode Typical Vertical Fan Mode Display AFT Range concept Default vertical fan mode range settings Train indicator Selecting Display Sector One-touch selection of 180 sector Selecting Sector Center Automatic shifting of own ship position NAV 11 How to inscribe, delete the event markers 12 Depth and horizontal range markers 13 Vert menu Suppressing noise and interference 14 Examples of proper and improper TVG Vertical Menu Overview Vertical menu description How the vertical fan mode picture is painted Interpreting the Vertical Fan Display When ship passes over fish schools Port-starboard picture bottom Display of net hauling False echo Horizontal/vertical fan display Train control Sector control This page intentionally left blank Echo Sounder Mode Event Menu Typical Echo Sounder Display Press the key to display the echo sounder picture Range concept Default echo sounder mode range settings Selecting Picture Advance Speed Train DirectionSelecting Tilt Angle How to measure range with the cursor Measuring Range by Cursor How to inscribe, delete the event markers Range Marker Range marker ES menu Finding echo strength A-scope display A-scope display Echo Sounder Menu Overview Echo sounder menu description General use This page intentionally left blank Menu Operation COM1 Menu 1 COM1 menu description 2 COM2 menu description COM2 MenuDisplaying the COM2 menu Short-cut Menu, Preset Menu Selecting short-cut or preset System menu Preset key Activating custom mode Short-cut key Activating a short-cut key Vertical Search Function System Setting SYS Menu System Setting 1 menu System Setting 1 menu description 10 ETA marker System Setting 2 menu description Default Setting YES Transducer being lowered 12 Factory Setting menu Sonar horizontal mode range settings 13 Range-sonar mode menu Vertical fan mode range settings 14 Range-ver mode menu Echo sounder mode range settings 15 Range-E/S mode menu Track range settings 16 Range-track mode menu Color palette 17 Color palette Language System backupLoading backup data Transducer frequency adjustment Demonstration mode Restoring all default settings 23 Default menu Cleaning the Equipment MAINTENANCE, TroubleshootingPreventive Maintenance Manually raising, lowering transducer Hull Unit MaintenanceLubrication Transducer Maintenance Fuse Replacement Troubleshooting Symptom Check, Remedy Error Messages Message Meaning, Remedy Hull Unit Diagnostics LED ExitPage Test Pattern Test pattern Menu Tree Scope OFF, on From Previous Specifications of 10.4 Inch Color LCD Searchlight Sonar Transceiver Unit Interface This page is intentionally left blank Index AGC IN-2