COLOR SECTOR SCANNING SONARMODELCH-37
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1-1OPERATIONAL OVERVIEW1.1 Control DescriptionMain panelPWRO TRANSDUCERFULLHALFEVENTENTER12 3CUSTOM MODECH-37R/BMODETRAINSECTORTILTRANGE+0246810GAIN
1-2Sub panel010LEVEL010TIME010DIMMER010BRILL010NL010AUDIOTVGHUEE/SFASTSCANTRACKV:HRANGEAUTOTRAINDEGAUSSBOTTOM MODEMENUMENUSub-panel 1Sub-panel 2Fu
1-31.2 Turning the Power On/OffPower onPress the PWR switch on the main panel. The lamp above theswitch lights to show that power is turned on.Power o
1-41.5 Presentation ModeFive presentation modes are available with the MODE control:Normal sonar, Normal sonar + combination, Expanded sonar,Vertical
1-5Mode PresentationVertical fan modeA vertical section of underwater conditions (half-circle area) appears on the entire screen.3D display (slant per
1-61.6 Background ColorThe background color is available in deep blue, blue or black,with the HUE key.1.7 Degaussing the ScreenThe screen is automatic
2-1SONAR MODE2.1 Typical Operating ProcedurePWROTRANSDUCERFULLHALFEVENTENTER12 3CUSTOM MODECH-37R/BMODETRAINSECTORTILTGAINRANGE-+010LEVEL010TIME010DIM
2-22.2 Selecting RangeThe RANGE control selects the detection (display) range. Se-lect the range according to either the fish species beingsearched or
2-32.3 Selecting Sector, Sector SteppingSector widthSector means the width of the transducer training. The SEC-TOR control selects the training (displ
Your Local Agent/DealerYour Local Agent/Dealer9-52 Ashihara-cho,9-52 Ashihara-cho,Nishinomiya, JapanNishinomiya, JapanTelephone :Telephone : 0798-65-2
2-42.4 Setting the Tilt AngleThe tilt angle shows the direction to which the sound wave isemitted. When the sound wave is emitted horizontally, the ti
2-5Case 1Case 2Case 3Fish School aBottomCase 1Fish school aBottomCase 2Fish school aFish school bCase 3Fish school bFish school bFigure 2-4 Fish ec
2-6However if the sea is not calm enough, they will become domi-nant and interfere with observation of wanted echoes. To mini-mize these sea surface r
2-72.5 Adjusting GainMost equipment malfunctioning claims result from impropersetting of switches and controls. For example, fish, fish habitator outc
2-8Identifying noise sourceTo eliminate noise effectively, you should first identify the sourceas follows:• Operate all onboard equipment one by one w
2-92.7 Detecting Fish Schools AurallyOccasionally you will be preoccupied with other tasks and un-able to concentrate on watching the sonar picture. I
2-102.8 R/B and Event Markers (trackball operation)The trackball functions to obtain the data (slant & horizontalrange, depth and bearing) from ow
2-112.9 Selecting Training Sector QuicklyNormally the training sector is selected by the SECTOR con-trol. To the training sector more quickly, however
2-12010DIMMER010BRILLHUEE/SFASTSCANTRACKV:HRANGEAUTOTRAINDEGAUSSBOTTOM MODEMENUMENUMENU : SONAR BOTTOM/3D E/STX RATE : 10TX PULSE LENGTH : LON
2-13In the CH-37, the TVG LEVEL and TIME controls compensatefor propagation loss. The effective distance is up to 1000 mapproximately.Without TVG func
iiiiiiiiiiiiiiSAFETY INSTRUCTIONSWARNINGELECTRICAL SHOCK HAZARDDo not open the equipment.Only qualified personnelshould work inside theequipment.Immed
2-142.13 Relocating Fish School for Easy ObservationWhen a fish school is near the edge of the screen and inconve-nient for observation, use the “” ex
2-152.15 Sonar Menu OperationOperating procedure1. Press the MENU key on the sub panel 2.2. Select the SONAR menu with the arrow keys on the subpanel
2-16TX EXT SYNC: If two or more echo sounders or sonars areoperated simultaneously, mutual interference may result dueto asynchronous keying pulse out
2-17Table 2-1 E/S menu descriptionmetInoitpircseDEGNAR .)sretem(023ro042,061,08,04:egnarrednuosohcestceleSTFIHS.htpedgnittratsyalpsidretnENIAG.niagsts
2-182.18 Interpreting the DisplayThis section provides the information necessary for interpret-ing the display.How the picture is paintedThe wide soun
2-19Bottom echoesWhen the tilt angle is widened, the bottom echo illustrated be-low will appear on the display. When the tilt is narrowed, thebottom t
2-20Fish schoolsA fish school appears as a mass of echoes on the screen. Thecolor of the mass shows the density of fish schools on the so-nar beam. To
2-21Sea surface reflectionsTo reduce sea surface reflections, set the tilt angle to 5° orhigher, so the upper edge of the sonar beam does not hit thes
2-22False echo by sidelobeAn ultrasonic wave is emitted only in the direction set by theTILT control, however there are some emissions outside themain
2-23Noise and interferenceWhen the fishing ground is crowded with many fishing boats,the sonar is subject to interference from ultrasonic equipment(ec
iiName: Warning Label (1)Type: 86-003-1011-0Code No.: 100-236-230CAUTIONWORKING WITH THE SONAR OILPrecautions•Keep oil away from eyes. Wear protective
2-242.19 Sonar Mode IndicationsNormal sonar displayHeading*Sector center markerRangeTiltBearingscaleOwn shipmarkerCourseline(Requiresnavigator orcurre
2-25Expanded sonar displaySector center markerRangeTiltSector widthmarkerOwn shipmarkerTrackballmarkerTrackball markerdataR 150T 10°Figure 2-24 Indic
2-262.20 Application ExampleThe figure below shows a typical sonar mode application.Sonar (Horizontal) ModePURSE SEININGBOTTOM TRAWLINGAfter blinking,
2-274 Narrow the train area, and track fish school.4 Narrow the train area, and track fish school.5 Change tilt angle for strongest fish school echo.6
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3-1VERTICAL FAN MODE3.1 Typical Operating ProcedurePWROTRANSDUCERFULLHALFEVENTENTER12 3CUSTOM MODECH-37R/BMODETRAINSECTORTILTGAINRANGE-+010LEVEL010TIM
3-23.2 Selecting RangeThe RANGE control selects the detection (display) range. Se-lect the range according to either the fish species beingsearched or
3-33.3 Selecting Bearing for the Vertical FanThe TRAIN control determines the bearing of the vertical fanbeam. To which bearing the beam positions is
3-43.4 Selecting the Display SectorSector center, widthThe SECTOR and the TILT controls determine the display area(sector width) and the display cente
3-53.5 Automatic Shifting of Own Ship PositionOwn ship position on the screen is shifted automatically eitherrightward or leftward according to the di
iiiTABLE OF CONTENTSFOREWORD ...vSYSTE
3-63.7 Horizontal, Vertical and Event Markers(trackball operation)The trackball functions to obtain the data (horizontal range anddepth) from own ship
3-7Function Procedure/PurposeTrackballData1) Position the trackball marker on the desired location.2) Read the trackball data displayed at the upper l
3-83.9 Bottom/3D Menu OperationBasic procedure1. Press the MENU key on the sub panel 2.2. Select BOTTOM/3D with the arrow keys in the sub panel 2.3. S
3-93D VIEW SCALE: Determines the depth item, time or distancefor 3D display mode. (Requires optional equipment.)TIME SCALE or DISTANCE SCALE: Selects
3-10Port-starboard picture (bottom)You can see fish echoes at the center-right of the CRT. Thebottom is displayed wider as the distance from the ship’
3-11Display of net haulingThis is an example of net hauling display. The location of thenet is indicated clearly. (Ship is stopped.)Own shipBackwardFO
3-123.11 Vertical Fan Mode IndicationsHeadingTrain indicatorH-RangeV-RangeH-RangescaleFish schoolsBottom2nd reflectionV-Range scaleVertical/Horizontal
3-133.12 How to Use the Vertical Fan Mode[1] TRAWLER (Surface/Mid-water/Bottom)UsageFish school detectionBottom shape discriminationRelation between f
3-14[2] PURSE SEINERUsageTracking fishObservation of fish movement/bottom shapeConfirmation of net forming1Approach the fish school while observing th
4-13D MODEThe 3D mode shows vertical echoes (real time echoes) and afrontal or oblique image of the bottom just passed, like a graphictrack plotter. T
iv3.9 Bottom/3D Menu Operation ... 3-83.10 Interpreting the Dis
4-2Oblique imageThe oblique image is the equivalent of the frontal image ro-tated by 45° counterclockwise.Own positionSectionalviewFigure 4-2 Oblique
4-34.3 Changing 3D View Scale Mode and Scale SelectionThe depth (z-axis) of the graph is displayed in either “TIMe” or“DISTance” scale mode. The depth
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5-1CUSTOM MODE KEYS (¡¡¡¡¡, ™™™™™, £££££)5.1 About the Custom Mode KeysLike the redial feature on a telephone, the custom mode keysrecord control sett
5-25.3 Custom Mode Operation1. Press desired custom mode key ¡, ™ or £.2. To escape from the custom mode settings, adjust any con-trols.[Example]FISHI
6-1MENU SETTINGS6.1 System Setting Menu1. Turn on the power while pressing the MENU key. Releasethe key when you hear a beep. The SYSTEM menu ap-pears
6-2Table 6-1 System setting menu descriptionmetInoitpircseDYALPSIDD3.ffo/noyalpsidD3snruTNOITISOPS'PIHSedutital;tamrofnoitisopstcelesdnaffo/nonoi
6-3** SCREEN ADJUSTMENT **H.SIZEH. POSITIONV. SIZEV. POSITIONDEFLECTION DIST.BRIGHTNESSEXIT : PRESS MENU KEYEffective picturemarker (inside)Effec
6-46.3 System MenuPress the MENU key while turning on the power. The SYSTEMmenu appears. ** SYSTEM MENU **SYSTEM SETTINGRANGE - SONAR MODERANGE
6-53. Select range.4. Set range.5. To return to the SYSTEM menu, press the MENU key.6. To quit, reset the power.Range - vertical fan mode1. Select RAN
vFOREWORDCongratulations on your choice of the FURUNO CH-37 ColorSector Scanning Sonar! We are confident that you will enjoymany years of trouble-free
6-6Range/shift - e/s1. Select RANGE/SHIFT - E/S from the SYSTEM menu.2. Press the MENU key.** RANGE/SHIFT - E/S **RANGE 1 : 40 2 : 80
6-7Color settingThe color setting screen allows you to adjust display colors.1. Select COLOR from the SYSTEM menu.2. Press the MENU key.** COLOR **L
6-8Factory setting menu (restoring default settings)1. Select DEFAULT from the SYSTEM menu.2. Press the MENU key.EXIT : PRESS MENU KEYNOTE! ALL S
6-96.4 Dual MenuPress the [MENU] and choose DUAL to open DUAL menu.MENU : SONAR BOTTOM/3D DUAL E/SDUAL MODE : E/S BOTTOM
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7-1MAINTENANCE & TROUBLESHOOTINGGood performance depends on regular maintenance. Follow-ing the recommended procedures in this chapter will keep t
7-27.3 Maintenance of Hull UnitLubricationGrease the raise/lower screw shaft once a year. Also, greasethe raise/lower main shaft (upper part of the gr
7-37.4 Display Unit TestThis test checks the ROM, RAM and keyboard for proper op-eration.1. Turn on the power while pressing and holding down theMENU
7-4** DISPLAY TEST **PROGRAM NO. 0650101-xxx MAIN PANELROM OK * * *SRAM OK 12 12VRAM OK 0 255SIO1 OK 12 0SIO2 OK 0 0 0TX
7-57.5 Train/Tilt TestThis test checks the transducer training and tilting functions forproper operation.1. Turn on the power while pressing and holdi
viSYSTEM CONFIGURATIONDISPLAY UNITCH-370NOTE 1: Two sets of rectifiers are necessary for AC mains.NOTE 2: DC ship's mains only. For AC ship'
7-67.6 Test PatternThis test checks display position and colors.1. Turn on the power while pressing and holding down theMENU key.2. Select TEST PATTER
7-7Transceiver unit error messageIf the power is not supplied to the transceiver unit, the followingmessage appears on the screen and the buzzer sound
7-8Train error messageIf something is wrong with the train control circuit, the followingmessage appears and the unit stops operating. Turn the PWRswi
7-97.8 Troubleshooting TableThe table below provides common symptoms of equipmenttroubles and the means to rectify them. If normal operationcannot be
7-10CheckSymptomColor partially irregular Magnet is near the screen.This symptom occurs if equipment which contains a magnet (loudes-peaker, etc.) is
AP-1CUSTOM MODE KEY LABELS(FRONT) (BACK)MODERANGESECTORTRAINTILT200m0°225°30°200m0°360°30°100m180°MODERANGESECTORTRAINTILTMODERANGESECTORTRAINTILTFISH
SP - 1SPECIFICATIONS OF COLOR SECTOR SCANNING SONARCH-371. GENERAL(1) Display System PPI display on high resolution 15”(381mm) color CRT(2) Pictur
SP - 2(6) Horizontal Range 12 steps during 30 m to 1600 m(7) Vertical Range 12 steps during 10 m to 800 m(8) E/S Range* 5 steps during 10 m to 8
SP - 3 6. ENVIRONMENTAL CONDITION (1) Ambient Temperature 0°C to 50°C (2) Relative Humidity 95% or less (at 40°C) 7. CORTING COLOR (1) Disp
Index-1INDEX¡, ™, £ keys (custom mode keys) 5-1–5-23D mode 4-1–4-33D view scale (time, distance) 4-3AAUDIO control 2-9AUTO TRAIN key 3-3Auto trai
viiMENU TREE[MENU] keySONARBOTTOM/3DE/STX RATETX PULSE LENGTHTX OUTPUT POWERTX EXT SYNCIRSTABILIZERCOLORRES. COLORTVG (LEVEL)TVG (TIME)BEAM WIDTHAUTO
Index-2Range presete/s mode 6-4sonar mode 6-4vertical fan mode 6-5SScreen adjustment 6-2SECTOR controlsonar mode 2-3vertical fan mode 3-4Sonar m
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