Surface fish school, Bottom fish school | Furuno FSV-84 manual

4. SLANT MODE

4.22.2Fish schools

A fish school appears as a mass of echoes on the screen. The color of the mass shows the density of the fishes and the size of the mass how they are distributed. In the following figures, the same fish school is observed with two different tilt angles. From the left figure, the operator can know the horizontal distribution of the fish school, and from the right figure the vertical distribution.

Surface fish school

Bottom

Bottom fish school

Bottom

4-45

Image 155

Furuno FSV-84 manual Surface fish school, Bottom fish school

Contents

Color Scanning Sonar 00015742711 Important Notices Safety Instructions Replace anticorrosion zinc plate yearly Iii This page intentionally left blank Table of Contents Safety Instructions Vii Table of Contents Viii NUMERIC/GRAPHIC Data Display MAINTENANCE, Troubleshooting Word to the Owner of the Furuno FSV-84 FeaturesForeword Xii Xiii System ConfigurationBlackbox type configuration System with locally supplied monitor Xiv Standard type configurationSystem with Furuno monitor Control unit Operational OverviewControl Description Power & Transducer controls Turning the Power On/OffTurning the power on Turning the power off Raising the transducer Lowering, Raising the TransducerScreen Brilliance Lowering the transducer Others menu Main menu defaultControl Panel Dimmer Dialog box for setting numeric value Display Setting menu Display Mode, Display Division Selecting a display modeMode selection menus Horizontal mode display Sample display mode picturesHorizontal mode Horizontal 2 display H2 mode Slant display combination Slant mode, single displaySlant display single Slant mode, combination display V1 & ES1 ES2 display V1 + ES1 or ES2 modeV1 and V2 modes V1 and V2 displays ES1 display History modeES1 mode History display ES1 + ES2 display ES2 modeES1 + ES2 mode ES2 display shown downward picture Adjusting the Gain Main menu Menu Overview Menu Title Scan Setting menu Echo sounder picture advance speed dialog box YES This page intentionally left blank Basic Operating Procedure Horizontal Mode Indications and Marks Horizontal modeHorizontal mode indications and marks Horizontal2 mode Dialog box for setting combination Landscape Left Inset Range concept Display Range Tilt Angle Setting the tilt angle Automatic tilt range wide with Auto Tilt key Automatic tiltAutomatic tilt range narrow with Auto Tilt key Auto tilt concept Case 3 Tilt angle 0 to Relation between bottom echo and tilt angleCase 1 Tilt angle 30 to Case 2 Tilt angle 10 to Tilt angle Tilt angle for surface fish Tilt angle and beam coverage Suitable tilt angle Location of trackball data Measuring Range and Bearing to a Target Principle of TVG Eliminating Weak Echoes Numeric data entry dialog box Suppressing Bottom Tail Adjust AGC Decrease pulse length Adjust 2nd AGC Adjust Near AGC Fish echo Interference rejector Rejecting Sonar Interference and NoiseIdentifying noise source How TX Interval works Changing Tx intervalShifting Tx frequency Reverberation reduction Setting reference bearing for frequency changeNoise limiter Echo average Sidelobe suppression Adjusting Beamwidth Target lock type dialog box Tracking a Fish School target lockSelecting target lock type Target Lock menu Target lock mark and target lock data Fish school tracking mode How position tracking mode target lock works Position tracking mode Target Lock menu Range and audio bearing marks Detecting Fish Schools AurallySelecting direction Audio sector dialog box Alarm & Audio menuSelecting audio sector Indications related to automatic training Automatic trainingReverberation Automatic return of own ship mark in true motion Presentation ModePresentation mode description Presentation modes Presentation mode dialog box How to select a presentation modeDisplay Setup menu Fish alarm status dialog box Fish Alarm How to create desired alarm zone How to set the fish alarm zone Relocating Fish School for Easy Observation How to use offcenter Estimate marks and their data Comparing Fish School Concentration Entering fish marks How to measure fish school speedMeasuring Fish School Speed Deleting fish marks through the menu Deleting fish marksFish mark Deleting fish marks with the Delete Mark key Event mark data Event Mark, Own Ship Position MarkEntering an event mark Event mark description Entering an own ship position markDeleting an event mark, own ship position mark Deleting event marks, own ship position mark from the menu Net course mark Net Course MarkInscribing the net course mark Net behavior Observing Net Behavior Recalling stored picture PRESET, Memory Card menuStoring, Recalling Picture Storing the picture Displaying the Others menu Others Menu Others menu description Color Setting menu Color response curve TVG setting window Bottom echoes Interpreting the Horizontal DisplayBottom echoes Fish schools Fish schools Wake Sea surface reflectionsWake Sea surface reflections Noise and interference Sidelobe echoes false echoesNoise and interference Vertical Mode Overview Vertical Mode ConceptSetting the vertical display Vertical mode concept Vertical 1 display indications and markers Vertical Mode Indications and MarksTypical vertical display Vertical scan and horizontal scan ranges Vertical bearing mark, tilt markSolid Line Dashed Line Auto train Auto TrainTrackball mark position reference mark Measuring range with the trackball Measuring the Range Select V-SCAN Setting and press the Menu key TVG setting dialog box Vertical Mode Suppressing Bottom Tail Adjust 2nd AGC Rejecting Interference and Noise Noise limiter Suppressing sidelobes Dialog box Vertical 1 expansion display Vertical Expansion Display Gain Control Wide Beamwidth Others menu description Setting window Display size Approaching Application to Bonito and Tuna FishingSearching Tracking Catching Catching Slant Mode Sensor Slant mode single display Slant mode combination display Dialog box for setting slant combination display H1 display Slant display NUMERIC/ Graphic Data Display Display Range Tilt Angle Automatic tilt Auto tilt concept Auto Training Eliminating Weak Echoes Scan Setting menu Suppressing Bottom Tail Decrease pulse length Adjust Near AGC Fish echo Rejecting Sonar Interference and Noise Changing Tx interval Noise limiter Adjusting Beamwidth Tracking a Fish School target lock Fish school tracking mode Position tracking mode Target Lock menu Detecting Fish Schools Aurally Selecting audio sector Manual offcenter Offcenter Automatic offcenter Fish Alarm How to set the fish alarm zone Numeric Measuring Fish School Speed Deleting fish marks Event Mark, Own Ship Position Mark Entering an own ship position mark Erase Marks menu Net Course Mark 21˚ Others sub menu Others menu description Scan Color TVG setting window Interpreting the Slant Display Bottom fish school Surface fish school Sea surface reflections False echo by sidelobe This page intentionally left blank Echo Sounder Mode Trackball mark position reference mark Typical Echo Sounder DisplaysEcho sounder 1 display Indications and markers on the echo sounder 1 display Downward-looking net recorder display Echo sounder 2 net recorder or echo sounder display Echo sounder combination display Echo sounder combination mode ES1 + ES2Echo sounder + net recorder display Echo Sounder 2 display Upward + downward looking display Upward + downward looking net recorder display ES2 mode Display mode dialog box Selecting an Echo Sounder ModeEnabling an echo sounder mode Echo sounder mode configurations and menu setting System menu setting and available displays Range and display shift concept ES1 SETTING, ES2 Setting menusSelecting Display Range Range dialog box Dialog box for setting numeric data ES1 Setting and ES2 Setting menus Picture advance speed dialog box Picture Advance Speed Measuring Depth, Distance Estimating fish concentration with estimate marks Fish histogram Fish histogram ES1 setting menu description ES1 Setting Menu OverviewES1 Setting menu ES2 Setting menu description 10 ES2 Setting Menu OverviewES2 Setting menu net recorder connected History Mode Sample History Display History mode concept Interpreting the history display How to Interpret, Set the History DisplayHow to interpret the history display Slant range and tilt angle Setting the history marker Horizontal slice width dialog box Setting the width of the history marker Setting the picture advance mode Full Numeric/graphic data display NUMERIC/GRAPHIC Data DisplayFull Numeric/Graphic Data Display Abbreviated Numeric/graphic display Abbreviated Numeric/Graphic Data Display On next Numeric/Graphic Data DescriptionNumeric/graphic data description Numeric/graphic data description con’t. from previous Main menu user menu Customizing the EquipmentUser Menu Deleting items from user menu Programming the user menu Message for registration of user menu item Function dialog box for storing picture Example default function programsFunction Keys F1-F6 Executing a function Function dialog box for erasing fish marks Dialog box for selection of presentation modeDialog box for adjustment of panel dimmer Function dialog box for recalling picture Confirmation for registering function key Programming function keysDialog box for erase ship track Function key dialog box Erasing programs Programming the User Prog control User Prog ControlSelecting a user program User program options This page intentionally left blank Erase Marks menu Others Menu Display Settng menu Display Setting menuOpening the Display Setting menu Display Setting menu description Tilt Alarm & Audio menu description Alarm & Audio menuOpening the Alarm & Audio menu PRESET, Memory Card menu description PRESET, Memory Card menuOpening the PRESET, Memory Card menu Mark Display menu Initial Setting menuOpening the Initial Setting menu Initial Setting menu description Bearing scale Heading markRange rings Fish marks connected with line Data on ship’s trackNet movement plot Mark Size menu Target lock markMark Size menu Others Menu Data Display menu Data Display menu Current VEC & Wind menu Current flow direction settingsCurrent VEC & Wind menu NET Sonde Settng menu NET Sonde Setting menuXmtr Distance setting window Depth Display menu NET Shoot Setting menuNET Shoot Setting menu Test menu Stabilization menuStabilization menu Time offset dialog box Initialization menuInitialization menu Processor unit Storing Image, ConfigurationMemory Card Operations 10-1 Memory Card menu 10-2 Memory Card menu, recall, delete dialog box opened Loading, Deleting Files10-3 10-4 Formatting Memory Cards 11-1 MAINTENANCE, TroubleshootingPreventive Maintenance Cleaning the equipment 11-2 Hull Unit MaintenanceHull unit maintenance Unit Fuse rating Fuse Replacement11-3 Unit and fuse 11-4 TroubleshootingTroubleshooting Symptom Check, Remedy Transducer Error messagesMessage Meaning, Remedy Power supply 11-5 11-6 Error CodesError messages con’t from previous Error code 11-7 Status MessagesTests Test menu Board test results Board test11-8 Interpreting the board test results 11-9 Trackball check Lever check Panel test11-10 Panel test Test patterns Test pattern11-11 Rx test sequence, Rx test message Rx test For service technicianNoise test For service technician 11-12 Raise/lower control box, cover removed Raising the Transducer from the Hull UnitRaising the transducer automatically 11-13 11-14 Raising the transducer manually AP-1 Menu Tree Appendix AP-2 Xmtr Distance AP-3 Tilt Interlock OFF, on AP-4 FSV-84 Specifications of the Color Scanning Sonar Transceiver Unit Power Supply IN-1 Index Indications IN-2 OFF Center key Offcentering IN-3 IN-4 Vertical mode Smoothing V1/S, V2 keys IN-5