Furuno CSH-7 User Manual

COLOR SCANNING SONARMODELCSH-7

1-3Adjusting Screen Brilliance, Control Panel BacklightingThe BRILL control adjusts screen brilliance, and the DIMMERcontrol adjusts control panel ba

1-4Seabed echo and tilt angleCase 1: Tilt angle 30 to 40 degreesThis tilt angle will display the entire seabed since it is capturedby the full width o

1-5Points to consider• Normally, a vertically distributed fish school is a better sonartarget than the seabed, because it reflects the transmitted pu

1-6Suitable tilt angleThe figure below illustrates the relationship among tilt angle,depth and detection range. Refer to it to find out the suitable t

1-7Adjusting the GainThe GAIN control adjusts receiver sensitivity (gain). Adjust itso fish echoes are clearly displayed with minimal noise on thescr

2-1MARKERS AND DATAStandard Markers and Data RTGB°R° BBearing ofbearing markerRange torange markerRangeringRangemarkerBearingmarkerRangeT

2-2Table 2-1 Standard markers and data descriptionMarks position on the screen. Direction of arrow is heading.Range RingsRange and BearingMarker DataR

2-3Optional Markers and DataVarious markers and data are available with connection of theINTERFACE Board and appropriate external equipment.Optional

2-4Optional markers and data in the normal plus textmode 367 38( 165)B 283° R 313 B 7°PSCDT

2-5Table 2-2 Optional markers and data descriptionLatest Event MarkerData→ ↓() B°Tidal Current DataC1: .C2: .C3: .Course Line MarkerElectronic Bearin

FIRST EDITION : MAY 1997Your Local Agent/DealerFURUNO ELECTRIC C O., LT D.c9-52, Ashihara-cho,Nishinomiya, Japan 662Telephone: 0798

3-1MENU OVERVIEWThe menu system consists of four menus: Scan menu, Menu-1,Menu-2, and System. The Scan menu can be opened while trans-mitting, and co

3-23. Operate the RANGE control to scroll the menu and selectitem. The selected item is highlighted in green and currentsetting in white.4. Operate th

3-3Table 3-1 Scan menu description (con’t.)metInoitpircseDRI ohcerehtoybdesuacecnerefretnidnaesionmodnarstcejeR.sranosrosrednuosESAREKRAM.enilesruocr

3-4Displaying menu-1, menu-2, system menu1. Press the TX switch to blink the lamp (transmitter off state)above it, if it is not already blinking.2. Pr

3-5This menu contains the same items as the Scan menu. See page3-2 for description.Menu-2 description** MENU - 2 ** (RANGE SW: U/D GAIN SW: L/R)EXT

3-6System menu description** SYSTEM MENU ** (RANGE SW: U/D GAIN SW: L/R)MENU MODE : MENU - 1MENU - 2SYSTEM : 0° : METERS : LOG/GY : 200 : 4800 : CIF

4-1FINE TUNING THE PICTUREEliminating Unwanted Feeble EchoesEchoes from targets such as seabed and fish return to the trans-ducer in order of distanc

4-24. Locate a fish school on a long range setting which is ap-proaching own ship. Adjust the tilt to keep the fish school inthe center of the sonar b

4-3fish echoes from seabed reflections. Decrease thePULSELENGTH setting on the Scan menu to shorten thepulselength. For search of surface and midwate

4-4Rejecting Sonar Interference and NoiseWhile observing the sonar picture, you may encounter occasionalor intermittent noise and interference. These

iiiiiiiiiiiii iSAFETY INSTRUCTIONSDo not disassemble or modify theequipment.Fire, electrical shock or serious injurycan result.Turn off the power imme

4-5Rejecting interference with TX cycleWhen other sonars operate nearby at the same transmission in-terval as that of own ship’s sonar, an interferen

5-1ADVANCED OPERATIONMeasuring the Range and Bearing to a TargetOperate the trackball to place the trackball marker (+) on thetarget you want to meas

5-2Trackball markerBearingmarkerFigure 5-2 Area monitored in audio function (sample)Relocating Fish School for Easy ObservationWhen a fish school is l

5-3Function Keys (F1, F2)Function keys F1 and F2 work like the auto dialing feature on atelephone, instantly calling out desired settings to perform

5-4Programming user programs1. Press the TX switch to blink the lamp above it, if it is notalready blinking.2. Press the MENU key and select Menu-1.3.

5-5Event Markers, Own Ship Event MarkersThe event marker denotes important items on the display, suchas a fish school, and the own ship event marker

6-1INTERPRETING THE DISPLAYSeabed EchoesWhen the tilt angle is widened, the seabed echo illustrated be-low will appear on the display. When the tilt i

6-2Fish SchoolsA fish school appears as a mass of echoes on the screen. Thecolor of the mass shows the density of fish schools on the sonarbeam. To fi

6-3Sea Surface ReflectionsTo reduce sea surface reflections, set the tilt angle to 5° or higher,so the upper edge of the sonar beam does not hit the s

6-4False Echo by SidelobeAn ultrasonic wave is emitted only in the direction set by theTILT lever, however there are some emissions outside the mainbe

iiTABLE OF CONTENTSFOREWORDA Word to CSH-7 Owners ...

7-1MAINTENANCEDo not work inside theequipment unless totallyfamiliar with electricalcircuits.Hazardous voltage which cancause electrical shock, burn o

7-2Hull Unit Maintenance HULL UNITRaise transducer and coatmain shaft withDAPHAECOROAEX #

8-1TROUBLESHOOTINGDo not work inside theequipment unless totallyfamiliar with electricalcircuits.Hazardous voltage which cancause electrical shock, bu

8-2Breaker ON/OFF stateONOFFBreakerDOWN command LED (Red)POWER ON/OFF LED (Green)Hand crankShaft gearMotor gear8ACable glandPOWERswitchBreaker(Bottom

8-3Diagnostic TestsThis unit has eight diagnostic test which check it for proper op-eration. These tests are mainly for use by service technicians,how

8-4Note: When the transducer is fully lowered, pressing the MENUkey at the diagnostic test raises the transducer.Panel testThis test checks the contro

8-5Figure 8-4 Color test displayGray testThis test checks for proper display of monochrome charactersand markers. Concentric rings and a monochrome te

8-6Figure 8-6 Results of continuous testSIO testThis text checks transceiver unit input and output.SIO TESTMAINI/FSIO1SIO-NAVSIO-CI= OK = NG = NGPRESS

8-7Figure 8-8 Echo-1 test displayEcho-2 testThis test checks echo processing circuits in the display unit andtransceiver unit.PRESS [MENU] 2 or 3 SECO

9-1SPECIFICATIONSModelCSH-7-xx (55: 55 kHz, 70: 70 kHz)DisplayDisplay PPI display on 10" non-glare high resolution CRTDisplay color 16 colors ac

iiiINTERPRETING THE DISPLAYSeabed Echoes ...

9-2Range, TX cycle, pulselengthRange, range display1. Ranges shown for off-center on are maximum.2. Fish school may not be detected depending on i

9-3Tilt AngleTilt beam angle 0° to 55°, continuously variableHull UnitPower Supply, Power Consumption24 VDC, 160 W (average), maximum 280 W (ship’s s

ivFOREWORDA Word to CSH-7 OwnersCongratulations on your choice of the FURUNO CSH-7 Color Scanning Sonar. We areconfident you will see why the FURUNO

vSystem ConfigurationCSH-7040TRANSCEIVER UNITRECTIFIERRU-3424100-115 VAC/200-230 VAC1φ, 50/60 HzShip’s Mains24 VDCHULL UNIT600 mm stroke400 mm stroke

1-1OPERATIONAL OVERVIEWEquipment OverviewAll operations of the CSH-7 are carried out through the displayunit and the remote controller (option). The

1-2Display Unit Control Panel DescriptionGAINTILTMENU F1 F2RB– +– +TXdcTurns transmitter on/off; freezes the display. The lamp above the s