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Furuno CSH-53 manual Interpreting The Display, Seabed Echoes, 1 Seabed echoes

Models: CSH-53

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INTERPRETING THE DISPLAY

Seabed Echoes

When the tilt angle is widened, the seabed echo illustrated be- low will appear on the display. When the tilt is narrowed, the seabed trace becomes wider and weaker. By observing the sea- bed condition on the display, the skipper can prevent net dam- age.

(A)Flat seabed

Tilt angle: 10° to 15°

(B)Flat seabed

Tilt angle: 20° or more

(C)Sloping seabed

Tilt angle: 20° or more

Narrow tilt angle Only half of vertical beam width captures the seabed.

Seabed is displayed narrower and in stronger colors when compared to (A).

Shallow bottom is displayed in a strong color and with a short tail.

Seabed

The deeper seabed echo is displayed in a weak color and with a long tail.

Figure 11-1 Seabed echoes

11-1

Page 81

Image 81

Furuno CSH-53 manual Interpreting The Display, Seabed Echoes, 1 Seabed echoes

Contents

MODEL CSH-53 COLOR SCANNING SONAROME13070E00 OME13070E00 00080807301 00080807301Pub. No. OME-13070 DAMI CSH-53Do not open the equipment SAFETY INSTRUCTIONSDo not disassemble or modify the equipment Do not place liquid-filled containers on the top of the equipmentSYSTEM CONFIGURATION TABLE OF CONTENTSFINE TUNING THE PICTURE FOREWORDADVANCED LEVEL OPERATION FUNCTION KEYSPORT/STARBOARD, HORIZONTAL SLICE DISPLAYS SAVING, REPLAYING PICTUREWARNINGS MAINTENANCESELF TESTS INPUT DATA SELECTIONFeatures FOREWORDA Word to CSH-53 Owners System Configuration STANDARDOPTION CONTROL DESCRIPTION Control Layout on Display Unit, Processor Unit and Remote Control BoxFigure 1-1 Display unit, processor unit and remote control box Same as Sub-panelFigure 1-2 Main panel Main PanelMain panel control description ControlFunction ControlFigure 1-3 Sub panel Sub panel 1 control description Sub PanelControl Function7 8 Sub Panel 2 data setting window+ + + + + +Setting Continued on next pageSetting MainSetting SettingMain DescriptionFigure 1-5 Remote control box Remote Control BoxAdjusting Screen Brilliance, Control Panel Backlighting Turning the Power On/OffTurning the power on Turning the power offTable 2-1 Display mode description Selecting a Display ModeMode DescriptionSetting the Tilt Angle Selecting a Display RangeSeabed echo and tilt angle How to discriminate fish echoes from the seabed Figure 2-1 Fish echo and tilt anglePoints to consider Figure 2-2 Tilt angle and sea surface reflections Tilt angle for surface fishFigure 2-3 Tilt angle and beam coverage Suitable tilt angleFigure 2-4 Gain settings and resulting picture Adjusting the GainMeasuring Range and Bearing to a Target Figure 2-5 Location of range and bearing indicationsThis page is intentionally left blank How to adjust TVG FINE TUNING THE PICTUREEliminating Unwanted Feeble Echoes Figure 3-1 Principle of TVG4. When sea surface reflections or plankton layers disturb the picture, decrease appropriate TVG option by one or two steps by pressing - minus key Pulselength data setting window TVG TX, PL AGC data setting window SIGNAL, SIGNAL PROCESS2AGC data setting window SIGNAL, SIGNAL PROCESS Suppressing Seabed TailSuppressing Seabed and Sea Surface Reflections in Shallow Waters Data setting window TVGTX, OUTPUTRejecting Sonar Interference and Noise Identifying noise sourceInterference rejector data setting window SIGNAL, SIGNAL PROCESS Changing Tx cycle data setting window TVGTX CYCLEFigure 3-3 How CYCLE works Noise limiter data setting window SIGNAL, SIGNAL PROCESS Setting F-shift data setting window SONRBEAM SONARNormal display mode Marks, Data and Display ModeFigure 4-1 Marks and data appearing in the normal display mode MARKS AND DATAFigure 4-2 Marks and data appearing in the normal display mode w/text Normal display mode w/textFigure 4-3 Marks and data appearing in the echo sounder display mode Echo sounder combination displayPermanently Displayed Marks and Data Figure 4-4 Marks and data appearing in the history display modeHistory display Continued on next pageContinued on next page Erasable Marks and DataMark/Data DescriptionMark/Data Continued on next pageDescription Latest Fish MarkMark Continued on next pageDescription Estimate markMark Description10 pts. max This page is intentionally left blank MENU OVERVIEW USER Menu OperationFigure 5-1 USER menu Menu screen location and display mode Figure 5-3 Menu screen location and display modeFigure 5-2 HIST DSP/GRPH menu Table 5-1 User menu description USER Menu DescriptionContinued on next page MenuMenu Menu ItemDescription The SYSTEM menu can be displayed by pressing MENU + c SYSTEM Menu DescriptionContinued on next page MenuContinued on next page MenuDescription Description MenuColor curve setting is completed DATA SET Menu DescriptionTo cancel change and close the menu, press END key Continued on next pageTo cancel change and close the menu, press END key Color curve setting is completedContinued on next page DescriptionMenu Description5-10 Continued on next page INIT SET/TEST Menu DescriptionMenu Description5-12 MenuDescription FUNCTION KEYS Programming the Function KeysFigure 6-1 FUNCTION KEY menu Function Key Fine Tuning Replaying a Function KeyFigure 6-2 REGISTER menu Saving Function Key Settings to a Memory Card Replaying Function Key Settings from a Memory CardFigure 6-2 CARD UTILITY menu This page is intentionally left blank How to find fish school center Figure 7-1 Tilt angle settingADVANCED LEVEL OPERATION Finding Fish School CenterTracking a Fish School target lock Tracking a fish schoolFigure 7-2 Target lock mark and target lock data Target lock mark appearance Choosing target lock modeFigure 7-3 Target lock mark appearance Erasing target lock markFigure 7-4 Target lock and tilt angle Tracking target lock markFigure 7-5 Target lock menu Setting target lock conditionsDescription of target lock items Detecting Fish Schools Aurally Figure 7-6 How to set the fish alarm zone The Fish AlarmRelocating Fish School for Easy Observation Figure 7-7 How to relocate fish schoolsFigure 7-8 Estimate marks and their data Comparing of Fish School ConcentrationMeasuring Fish School Speed Figure 7-9 How to measure fish speedFigure 7-10 Event marks The Event MarkEntering an event mark Figure 7-11 Event mark descriptionErasing an event mark Figure 7-12 True motion display True Motion DisplayFigure 7-13 Net location mark Plotting Net Location MarkFigure 7-14 Net behavior Observing Net BehaviorReducing Sea Surface Reflections Boosting Tx PowerThis page is intentionally left blank Port/Starboard display Figure 8-1 Port/starboard displayPORT/STARBOARD, HORIZONTAL SLICE DISPLAYS Figure 8-2 Horizontal slice display Horizontal slice displayInitializing Memory Cards SAVING, REPLAYING PICTURETransferring Echo Data from Internal Memory to Memory Card Saving the PictureSaving Net Shooting Data Net shooting data contentsHow net shooting data is saved Transferring net shooting data to memory cardReplaying Saved Data Deleting Memory Card ContentsWhole picture or echo inside estimate mark Net shooting dataTURNING MARKS, DATA ON/OFF Turning marks on/off through the data setting windowTurning marks on/off through the user menu 10-1This page is intentionally left blank INTERPRETING THE DISPLAY Seabed EchoesFigure 11-1 Seabed echoes Figure 11-2 Fish schools Fish SchoolsWake Sea Surface ReflectionsFigure 11-3 Sea surface reflections Figure 11-4 Wake appearance on the displayNoise and Interference False Echo by SidelobeFigure 11-5 Sidelobe echoes Figure 11-6 Noise and interferenceWARNINGS Overvoltage WarningUnretracted Transducer Warning 12-2 Figure 12-1 Raise/Lower Control Box of the Hull UnitDANGER SELF TESTSOpening the Self Test Menu 13-1Single test Self Test DescriptionFigure 13-2 Single test Continuous testFigure 13-4 Panel test Panel testColor test Figure 13-5 Color testFigure 13-6 Gray test Gray testSIO test Figure 13-7 SIO testFigure 13-8 Interface unit CS-120A, cover opened Interface Unit CS-120A Self TestThis page is intentionally left blank INPUT DATA SELECTION Figure 14-1 DIP switch settings in the interface unitSelection of Data on Interface Unit CS-120A 14-1Figure 14-2 How to measure distances between transmitters Setting Distances Between Net Sonde TransmittersHow to set net sonde transmitter distances Figure 14-3 Data set menuDisplay Unit Maintenance MAINTENANCE15-1 Figure 15-1 Display Unit MmaintenanceHull Unit Maintenance Figure 15-2 Hull Unit Maintenance15-2 Fuse replacement Replacement of Fuse, Memory Card Battery15-3 How to ReplaceMemory card battery replacement 15-4How to replace the battery in the memory card USER Menu MENU TREEDATA SET Menu INIT SET/TEST Menu Continued on next page SYSTEM MenuContinued from previous pageThis page is intentionally left blank SPECIFICATIONS 1. GENERALSP-1 SP-2 2. DISPLAY3. HULL UNIT 4. POWER CONSUMPTION5. ENVIRONMENTAL CONDITION 6. COATING COLORINDEX