Furuno CSH-5 MARK-2 User Manual

COLOR SCANNING SONARCSH-5 MARK-2

4Main Panel468201046820104682010468201046820104682010NOISE LIMAGC213OFFVP213OFFIRCONTRASTBRILLDIMMERAUDIOPOWERONOFFAGC suppresses the echo tail of st

5Control Box PanelGAINRANGETRANSDUCERAUTOTILTSECTORSCANF1EVENTR/BOFF-CENTERF2EVENTDELETEMENUTXTILT-+-+TRANSDUCER retracts and lower the tr

6EVENT displays the latest event mark “ + ” and its position data; i.e.,horizontal range, depth and bearing measured from own ship’s posi-tion. (optio

7Menu ScreenThe CSH-5 MARK-2 employs four menu screens; menu-l, menu-2and system menu. Of the four menus, the menu-2 and system menucontain preset ite

8Turning Off Scan MenuTo turn off the scan menu, press the MENU key.Note: Settings for the items shown in red are locked. To unlock thesettings, call

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104. BASIC OPERATIONGeneralThis section provides information necessary for basic operation ofthe CSH-5 MARK-2, from turning the power on and off to de

11Power OffPress the TRANSDUCER “ ” switch on the control box. Wait untilthe lamp above the switch lights, and then press the POWER “OFF”switch. Note

12Seabed Echo vs Tilt AngleCase 1: Tilt Angle 30 to 40 degreesA wide tilt angle will display the entire seabed since it is captured bythe full width o

13Points to Consider• As a general rule of thumb, a vertically distributed fish school is abetter sonar target than the seabed, since it reflects the

C 9-52, Ashihara-cho, Nishinomiya, Japan Telephone: 0798-65-2111 Telefax: 0798-65-4200 Your Local Agent/Dealer All rights re

14TILT ANGLETilt angle vs. Beam Coverage20 (40)40 (80)60 (120)80 (160)100 (200)200 (400)Depthm100 (200) 200 (400) 300 (600) 400 (800)Rangem0°5°10°15°1

15Adjusting the GainThe gain should be adjusted to see fish echoes clearly with minimalnoise on the screen. Too high a setting not only causes excessi

165. FINE TUNING THE PICTUREGeneralIn the previous chapter basic operation of the sonar was presented.This chapter describes the procedures for fine t

173. Locate a fish school on a long range setting which is approachingown ship. Note that the tilt should be kept adjusted so that the fishschool is a

18Suppressing Seabed and Sea Surface Reflections inShallow Fishing GroundsIn shallow fishing grounds with hard or rocky bottom, seabed reflec-tions of

19Rejecting Noise with IR ControlThis control is similar to the interference rejector on echo soundersand radars. It is effective for rejecting random

206. ADVANCED OPERATIONGeneralIt this section, how to use the CSH-5 MARK-2 effectively in actualfishing operations is presented.Measuring Range and Be

21Procedure1. Move the trackball mark “ ” to the direction you want to moni-tor through the speaker, by operating the trackball.2. Press the R/B key.

222. Press the OFF-CENTER key on the front panel.3. To move the own ship mark back to the center of the screen, pressthe OFF-CENTER key again.Finding

23Registering Procedure1. Press the MENU key.2. Rotate the RANGE control to select FUNC KEY PROG.3. Rotate the GAIN control to select FUNC1 or FUNC2.4

iiiiiiiiiiiiiiSAFETY INSTRUCTIONSWARNINGWARNINGELECTRICAL SHOCK HAZARDDo not open the equipment.Only qualified personnelshould work inside theequipmen

247. MARK AND DATAThis chapter describes the marks and data which appear on the dis-play screen.TRACKBALL MARK DATASlant RangeHorizontal RangeDepthTru

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268. INTERPRETING THE DISPLAYGeneralThis section provides information necessary for interpreting the display.Interpreting the DisplaySeabedWhen the ti

27Fish SchoolA fish school appears as a mass of echoes on the screen. The color ofthe mass shows the density of fish schools on the sonar beam. Toknow

28Sea Surface ReflectionsTo reduce the sea surface reflections, set the tilt angle to 5° or moreso that the upper edge of the sonar beam may not hit s

29False Echo by SidelobeIn the preceding chapters, it was explained that an ultrasonic wave isemitted only in the direction set by the TILT lever, but

309. WARNINGOvervoltage WarningIf the supply voltage rises about 20% to over the rated value, theovervoltage detection circuit is actuated. The follow

31Hand Crankhull unitBottomDown CommandLED (Red)Power LED (Green)Power SWBreakerONOFFMain FuseFuse for TransceiverTransceiver UnitPower switch(Normall

3210. MENUGeneralThe CSH-5 MARK-2 employs three menu screens, menu-1 menu-2,and system menu, to preset infrequently used functions.Changing Menu Setti

33Menu-2The figure below shows menu-2.** MENU 2 **EXT KP OFF ONRANGE MARKER 1/4R 1/2R OFFMARK INDI ±180° 360°MENU MODE : MENU-1 MENU-2 SYSTEMUNEMG

iiCAUTIONCAUTIONDo not exceed 18 knots when operatingthe equipment and do not exceed 16knots when lowering or raising thetransducer.The transducer may

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3511. INTERFACE MODULE CSH-5060SpecificationsThe CSH-5060 Interface Module permits connection of external equip-ment (navigational equipment, current

36OperationThe functions of the Interface Module are accessed from the MENUscreen except the Event mark and North mark*.* —Gyrocompass required.1. Eve

37TARGET LOCK FUNCTIONθ1θ2DThe target lock function allows continuous tracking at a present depth "D". That is, the tilt angle changes autom

384. Suppressing Effects of Pitching and RollingThe Motion Sensor MS-100 (option) compensates for the effects ofpitching and rolling to provide stable

395. Detecting Fish Echoes in Specific Area (Fish Alarm)The fish alarm alerts you to fish echoes in an area you select. Anyfish echoes entering the

406. Fish Alarm On/Off, Fish Alarm SensitivityThe audio alarm for the fish alarm can be enabled/disabled and thefish alarm sensitivity can be selected

418. Menu DescriptionThe CSH-5 MARK-2 employs three menu screens, MENU-1, MENU-2 and SYSTEM Menu, to preset infrequently used functions. Duringnormal

42MENU-2** MENU-2 ** ( RANGE SW : U/D GAIN SW : L/R )EXT KP SYNC : OFF ON RANGE MARKER : 1/4R 1/2R OFFBEARING SCALE : ON OFFCURRENT MARK : ON OFF

43SCAN MENU** SCAN MENU ** ( RANGE SW : U/D GAIN SW : L/R )MENU MODE : SCAN E/SDISPLAY MODE : COMBI-1 NORM TEXT COMBI-2HUE : 1 2 3 4 TX OUTPUT :

iiiTABLE OF CONTENTS1. FOREWORD _________________________________________ 12. SYSTEM CONFIGURATION _____________________________ 23. CONTROLS ________

4410. Contents of Menu ItemsThis section describes the menu items available with the addition ofthe CSH-5060 and external equipment.

45E/S MenuItemE/S SHIFTE/S IRE/S GAINE/S CLUTTERE/S ADVANCEE/S COL CURVE(Response Color Curve)E/S DRAFTContentsShifts the start depth of the display r

46MENU-2 (Refer to pages 47 to 51 for location on the screen.)metIstnetnoCELACSGNIRAEB.ffodnanoelacsgniraebcinortceleehtsnrutunemsihTKRAMTNERRUC.ffodn

47Indications1. Normal Mode (NORM)4251663123Electronic Bearing ScaleMark Indication (Bearing)Course Mark456Heading IndicationCurrent MarkOwn Ship’s Ma

482. Normal + Text Mode9!1!078789Current IndicationPosition DataLatest Event Mark Data!0!1Past Event MarkNavigational Data

493. Echo Sounder Combination Mode (COMBI 1)Normal + Echo Sounder16 Color BarSonarPictureEchoSounderPicture

504. Sonar Combination (COMBI 2)Normal + Signal on R/B Mark16 Color BarSonarPictureSignal onR/B Mark

51Marks and DataThis section explains the Marks and Data available from the equip-ment interfaced. Pages 24 to 25 show the location of these Marks and

52Event Mark Position OutputConnected to a navigator, the CSH-5 MARK-2 can output event markposition data to external equipment when the [EVENT] key i

5312. MAINTENANCEGeneralThe CSH-5 MARK-2 is designed and constructed to provide manyyears of trouble-free performance when properly maintained. User-p

iv9. WARNING __________________________________________ 30Overvoltage Warning ...

5413. UNIT DIAGNOSTIC TESTSThis unit has eight built-in diagnostic tests which check it for properperformance. Although the tests are designed primari

55Conti TestThis is a continuous test of the Display and Transceiver Units. Addi-tionally checked devices are DROM and DRAM.CONTI TESTMAIN 105-0541-XX

56Color TestThe color test checks for proper display of all colors.COLOR TESTPRESS [MENU] 2 or 3 SECONDS TO STOP SELFCHECK16 Color displayWHT RED GRNE

57Gray TestThe gray test checks for proper display of monochrome charactersand markers. Concentric rings and a monochrome test bar are dis-played.PRES

5814. CHARACTERISTICS OF THE ULTRASONIC WAVE IN WATERThe purpose of this chapter is to provide an overview of the charac-teristics of

59Research in the waters throughout the world has revealed that there isa difference of approximately 100 m/s between the areas where thevelocity is m

60RefractionAn ultrasonic wave transmitted in water does not travel straight but ismore or less refracted. This refraction is caused by the variation

61The drawing below shows how temperature variation affects soundpropagation with respect to different emitting directions (tilt angles).Beams tilted

62The product of the density (P) and the velocity (C) is called intrinsicacoustic impedance and in the boundary between two media whichhas extremely d

63Reflection Loss (dB)Frequency (kHz)Reflection Loss (dB)Frequency (kHz)Reflection Loss(Mackerel No.1)Reflection Loss(Mackerel No.2)SpeciesSardineBoni

11. FOREWORDThe FURUNO CSH-5 MARK-2 Color Scanning Sonar is a full-circle,multibeam electronic scanning sonar which detects and instan-taneously displ

SP-1SPECIFICATIONS1. DisplayPPI display on 14" non-glare, high resolution color CRT2. Display Color16 colors according to echo strength3. Numeric

SP-25. AUDIO SEARCHSearching Method Echoes in the direction of the bearing mark areaudibly monitored by the built-in loudspeaker.Audio Sector 20˚, 40˚

Index-1INDEXAAbsorption 59AGC control 17Air bubbles 61Attenuation 59AUDIO control 21AUTO TILT key 6CColor test 56Conti test 55Control box pane

Index-2SScan menu 8Sea surface reflections 28Seabed echo 26SECTOR SCAN key 6, 21Sidelobe 29Single test 54SIO test 51Sound velocity 58System co

22. SYSTEM CONFIGURATIONSystem Configuration

33. CONTROLSOperating ControlsThe CSH-5 MARK-2 provides intuitive operation. If you change acontrol setting you will see the associated reaction on th