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Furuno CSH-23F/24F User's Manual

1. NO m Om Figure 15 3 DATA SET menu 2 Select NET SONDE and then Net Sonde XMTR 3 Enter number of net sonde transmitters and distances between them 15 2 MAINTENANCE A WARNING Do not open the cover There are no user serviceable parts inside Refer any repair work to a qualified technician Display Unit Maintenance Handle the equipment with care Clean the screen and filter Keep heater away from the regularly Cover the equipment equipment when it is not in use An anti static spray may be used Heat can damage the to clean the screen Do not use DISPLAY UNIT equipment Allow sufficient chemical based cleaners they can ventilation remove paint and markings Figure 16 1 Display unit maintenance Keep magnets and cassette tapes away from the display unit Magnets or magnetic material can can distort the picture 16 1 Hull Unit Maintenance NS Apply MOLYTONE grease 2 every six months CN MDC Raise transducer and coat main shaft with DAPHAECOROAEX 2 every six months Dry dock ship and clean transducer face yearly Apply single coat of MARINE STAR 20 Mod Red N anti foulant to transducer face to keep marine life off the transducer CAUTION The zinc block near the transducer must be replaced yearly The junction between the transducer ux and main shaft may corrode which can result in loss
2. Figure 6 2 REGISTER menu 5 Press the up or down arrow key in the sub panel to select the function key to program then press the MENU key 6 Press the END key several times to close the menu Replaying a Function Key Press function key F1 F3 desired Function Key Fine Tuning 6 2 The function key fine tuning keys let you fine tune the items shown in the table on the next page when a function key is active Note Register function keys beforehand to use this function 1 Press desired function key The lamp above the function key pressed lights 2 Press the or key as appropriate the key to lower the setting to de emphasize echoes and the key to raise the setting to emphasize echoes The lamp above the key lights when the setting 1s 1 to 4 and the lamp above the key lights when the setting is 1 5 Fine Function Key Fine Tuning Adjustment TvGNer 3 2 o o 1 1 2 83 3 2 1 0 1 af 2 1 0 0 fia 4 Tx Cycle 0 o o 0 0 0 TxBeamwidth 3 2 1 0 po o 0 TxPower 2 1 o o o o o o of Oo Saving Function Key Settings to a Memory Card 1 Press the MENU key 2 Select the CARD UTILITY menu CARD UTILITY Press END key to return to main menu Figure 6 2 CARD UTILITY menu 3 Select Save and press the MENU key Note If the card has not been initialized initialize the card by selecting Initialize an
3. Net Rec Range Sets sounding range of net recorder transmitter unit DEFAULTS Restores default settings Program Recalls Reserved for future use OTHERS EVENT KEY Q3 EVENT The EVENT A key functions to inscribe event mark SHOOT The EVENT key functions as the SHOOT key on the remote control box to display net shooting mark Data Format Input data format can be selected among CIF NMEAO0183 Ver 1 5 and NMEA Ver 2 0 Auto Tilt Auto tilt can be selected wide or narrow 5 12 FUNCTION KEYS Similar to the quick dialing function on a telephone the five function keys F1 F3 on the main panel record control and menu settings and replay them back exactly as programmed The items you can program are gain display mode TX ON OFF USER menu SYSTEM menu DATA SET menus and data setting win dow The function keys are useful for quickly setting up the so nar for a specific purpose such as seabed detection Programming the Function Keys 1 Tune the sonar as desired 2 Press the MENU key 3 Select the FUNCTION KEY menu and press the MENU key USER MENU Press MENU key to register customized settings to FUNCTION keys F1 to F3 Press END key to close menu FUNCTION KEY Figure 6 1 FUNCTION KEY menu 4 Press the MENU key again 6 1 USER MENU FUNCTION KEY REGISTER Customized settings are registered to FUNCTION keys Select key number withT J key and press MENU key Press END key to return to sub menu
4. 100 200 300 poe YS L P LLL TAY THE Cee oe Ff of FI a Lee GFF Ff TTT Figure 2 3 Tilt angle and beam coverage 2 6 Adjusting the Gain The GAIN control adjusts receiver sensitivity gain Adjust it so fish echoes are clearly displayed with minimal noise on the screen Too high a setting not only displays excess noise and makes it difficult to discriminate wanted echoes but also causes seabed echoes to be painted in strong colors resulting in echoes being masked by seabed reflections Normally set the control somewhere between positions 3 and 7 SB Gain low Gain proper Gain high Figure 2 4 Gain settings and resulting picture Measuring Range and Bearing to a Target Operate the trackball to place the trackball mark on the target you want to measure the range and bearing The range and bear ing appear at the upper left corner on the screen Figure 2 5 Location of range and bearing indications Note The bearing is shown in either 360 or 180 indication relative to ship s heading In the latter case bearing B 1s indicated as follows B IL IL P on the port side BL IL ILS on the starboard side 2 7 FINE TUNING THE PICTURE Eliminating Unwanted Feeble Echoes Echoes from targets such as seabed and fish return to the trans ducer in order of distance to them and when we compare their intensities at the transducer face those from nearer targets are genera
5. Control Layout on Display Unit and Remote Control Box SUB PANEL 1 MAIN PANEL SUB PANEL 2 m O DATA Ci JI C33 ara o 3C C 3 C33 C BON Ce LOCK O EE NET ms I ES M CE 8 T FUNCTION REMOTE CONTROL BOX O AUTO EN GE T x ai 7 TRAIN nr SHOOT weno J d scu cu CE SLICE i Eum DEPTH Figure 1 1 Display unit and remote control box Main Panel 1 2 TRANSDUCER iris CET ET CERO Uca Eo NT DEPTH TA FRET O O on ka DIM CONT BRILL AUDIO EVENTI EVENT2 ESTI ESTI MATE J MATE2 OFF FISH e Figure 1 2 Main panel Main panel control description Control Function POWER ON ON Turns on the system The lamp above the key lights during Tx POWER OFF and blinks when the TX key in sub panel is turned off OFF Turns off the system Press after retracting the transducer TRANSDUCER Raise and lower the transducer The small down arrow key provides mid protrusion the large down arrow key full protrusion The UP arrow raises the transducer FI F3 Sets up display according to user program provide fine tuning NORM E S HIST Select display mode NORM normal sonar picture E S Echo sounder Mode keys combination HIST Historical display Lamp above a key lights to show current selection RECALL MEMO RECALL Replays saved picture MEMO Saves
6. Note Period equals 60 100 one transmission 150 200 Tilt angle changes 300 400 in 2 steps for aster DUE isk marked 800 width 1 steps for all other widths 1000 more than 1200 7 1 Tracking a Fish School target lock 7 2 Target lock which requires speed and heading inputs automati cally tracks an important fish school so that you won t lose sight of it on the display screen Two types of target lock are avail able Target Mark or Fish One may be selected on the SYS TEM menu Tracking a fish school 1 Operate the trackball to place the trackball mark on fish school you want to track 2 Press the TARGET LOCK key to light the lamp above it The target lock mark a appears on the fish school and tracking begins Figure 7 2 Target lock mark and target lock data Note 1 Range offset is applied to both ship s movement and fish school movement on the screen Tilt angle is not offset Note 2 When the target goes out of the tilt angle range the lamp above the TARGET LOCK key blinks and then target lock 1s cancelled 3 Tocancel target lock press the TARGET LOCK key again Target lock mark appearance The size and thickness of the target lock mark indicates fish speed and tracking status as shown below Target lock Meaning mark appearance Mark size indicates relative speed Tx cycles Up to 3 Tx Figure 7 3 Target lock mark appearance Erasing target lock mark Ta
7. This 1s equivalent to about two picture screens or about 20 pictures of echoes in side the estimate mark The following data are automatically saved as system data when the memory card is initialized panel setting function key settings and menu settings 10 1 Saving the Picture You can save either the whole screen or the echo inside the esti mate mark to the internal memory or a memory card Data to Save Saving Method Whole picture marks MEMO key and Memory card alphanumeric data menu setting Echo inside estimate MEMO key and Internal memory mark menu setting Net shooting data SHOOT key 1 Press the MENU key to display the USER menu 2 Select SAVE PICTURE 3 Select item to save Whole Saves whole picture to memory card Est MK Saves echo inside the estimate mark to internal memory About 20 pictures can be saved QK Save Saves whole screen to the internal memory One picture can be saved 4 Press the END key to close the USER menu 5 Press the MEMO key on the main panel It takes about two minutes to save a whole screen to a memory card During this time the normal picture is displayed but the unit accepts no key input Transferring Echo Data from Internal Memory to Memory Card 10 2 1 Press the MENU key to display the USER menu 2 Press arrow keys to select CARD ECHO DAT 3 The display shows all inside estimate mark pictures stored in the internal memory Using the arrow keys s
8. data 1s taken from GPS be sure to set GPS output format to DR GPS with no DR output format cannot be used Ship s Position Input Device 3 S4 Use this position for GPS or DR CHEN tinea GPS or DR See Note Depth echo sounder color video sounder etc InputDevice S5 Note 1 For white line pulse when the Echo Sounder Note 1 oe pn from sounder which does not have digita validas ode depth output Note 2 When the depth data is taken from an echo sounder which has digital echo output FE 822 FCV ED 202 IF 3000 or IF 5000 Figure 15 1 DIP switch settings in the interface unit 15 1 Setting Distances Between Net Sonde Transmitters To accurately display the net shooting mark and net sonde mark position the distance between transmitters must be correctly set This is done on the DATA SET menu RO Length of net from its end to transmitter1 in meters H1 Length of net between transmitters 1 and 2 in meters H2 Length of net between transmitters 2 and 3 in meters Figure 15 2 How to measure distances between transmitters How to set net sonde transmitter distances 1 Press the MENU key while pressing and holding down e The DATA SET menu appears DATA SET MENU NET SONDE NET SONDE XMTR Select item with lt keys and press MENU key Press END key to close menu Qty Setting range 0 to 10 Distance 0 Setting range Om to 9990m gt
9. m from own ship mark 419 Present depth m to mark 35 Depth m of mark at moment EVENT key is pressed B265 Present bearing degree Bottom left hand corner of screen Ej n t lt 8 35 i Stored when EVENT key is You observe picture from o y pressed direction of JL mark A DO a eo Figure 7 11 Event mark description Plotting an event mark on the display is equivalent to dropping a buoy with an anchoring chain that extends from surface to bot tom The buoy is fixed at its present geographical location but the marker on the display moves to a point where present beam plane intersects the anchor chain of the buoy as the ship moves or the tilt angle is changed This can be said of other marks as well such as fish mark and trackball mark Erasing an event mark Open the data setting window sub panel 2 and select DELETE MK Press appropriate EVENT key to erase mark 7 13 True Motion Display The relative motion display places the own ship mark at the screen center and echoes from fish and the seabed move on the screen relative to own ship s movement This means that even when the ship is dead in water fish echoes move on the display In the true motion display however stationary objects are fixed and own ship and fish echoes move on the display in accordance with their true courses and speeds Thus you can observe own ship and fish echo movement with respect to the seabed Op
10. 10 4 TURNING MARKS DATA ON OFF cece cence 11 1 INTERPRETING THE DISPLAY SeJDOCHECIIOS Soc ctcutocrcs teneas a ALLE ACA Dh pA UEM RM A CLE M ALL ee 12 1 Pursli cHoOsoiecitcicmu ee E LAM LM MM e ILI ARA eI te LL 12 2 SETO Ur CERTECO cientos tenes terc en ne ae er nme re A usui eS ec ES roue Leonie e Sere 12 3 MUR unc du i M i Ree e 12 3 False Echo Dy Ide ODDO retenue cena euet Eodem i oueen leaner A oodd Decon mue bodies uU 12 4 INOISC and Imterier elle uoles ome iecus olo E LL DM LI CE Dd DM D EI LLLA DRE 12 4 WARNINGS ODN CTV OAS VALS osn cadens saevscawce ano E suas eeasndeqeseesieanuaplonveateal E 13 1 Uncetracoied Transducer VWOTPHU D ocu arerce ee E E sasteatsenetaosbeqstendses 13 1 SELF TESTS Opening the SEE Test MENU oossesnconitatiaista donates semncsates eianwsetubaauseussateneeiedanansanemscsey REINE Ea 14 1 OME DDE o1 i EE ETT 14 2 Mee Une RIAS e CSG a 14 5 INPUT DATA SELECTION Selecion of Data at Interface Umt s D Leieesonenextaatesdo be eanan sn n eeN ene ue uen 15 1 Setting Distances Between Net Sonde Trans Miter s eso coxesavt sosta et dusi tpa b Rs eS OP teashvsadaracatetetents 15 2 MAINTENANCE Dusplase tmt NEIGE Wa Pao oosssaeuee pium E E E NU Du DIU UM EE 16 1 Era D E IVS TE e E EE E eu Adecco resp OET E E E MI CHE U En TA 16 2 MENO RE m A 1 SPECIFICATIONS sse teretes SP 1 INDE Y IN 1
11. 120 130 123 D22 Stern Mark Uys Range from own ship to cross cursor in stern direction J Range from own ship to cross cursor in port starboard direction N Slant range from own ship to cross cursor D Depth to cross cursor Figure 9 2 Horizontal slice display 1 In the normal display place the trackball mark on the echo you want to see displayed in the horizontal display then press the R B key The horizontal slice marker 120 in width and centered on the bearing mark appears on the display Echoes within the marker appear in the window at the bottom of the display scrolling leftward 2 Place the trackball mark in the horizontal slice window to find data The trackball mark changes to the cross cursor Range and depth to the cross cursor are shown Note 1 Picture advancement is synchronized with ship s speed The picture does not advance when the ship is dead in water or there is no speed input Note 2 The width of the horizontal slice marker may be changed on the SYSTEM menu with H Slice Width MEMORY CARD OPERATIONS Initializing Memory Cards Before you save information to a memory card it must be initial ized formatted 1 Press the MENU key to display the USER menu 2 Select the CARD UTILITY menu 3 Select Initialize It takes more than two minutes to initialize a memory card 4 Press the END key a few times to display the user menu The memory card stores 256k bytes of data
12. 6 Net BehaviOE osito e eis 7 16 Net Location Mark 3i asi Reit otes onmes 7 15 Net Shooting Mark 2 iei i oe ee dont 10 4 INGU Sonde Data sse tolus Rid domas 4 6 INGE SOM GIVI uda cedo te eid 10 4 Net Sonde Transmitter ssssee 15 2 INOISC soto Circe t ibbud didicit 12 4 Normal Display Mode 4 Normal Display Mode w text 4 2 oru ird drm 4 4 Noise Limiter NL eeeesessss 3 6 O Overvoltage Warning ssseeeesseeeeeeeeees 13 1 P Port starboard Display 9 PUISCIEN SEM 5e ter ono voti rieio ionis 3 3 RANGE and Bearing sssesse 2 7 aC IRI area e 4 5 Rejecting Sonar Interference 3 4 Remote Ontrol BoXcsnie dentato Latus 1 8 S Saving the PICEUEE ees oa odo ie Enea 10 2 Dea Surrace Ietlec ol ba Dee in 12 3 SO ADE ia s ette a Du 2 3 12 1 CLE Soa tote E E accedi oec EE E 14 1 Ships Track Malk esrin 4 6 DICE lOD E eee eee eee mee eoa cadum aut 12 4 Sub Panel Tax ditor octo ieu e eee 1 4 SUD PANG 2 cis siete iaiinntandeiatmacerasiendumnesneiaits 1 5 Suppressing Seabed Tail 3 3 SY STENIGSIU serront sos eesstadeakiacsens 5 5 Taree t E36 eoe io ie ere beth Ena RO Te 5 6 Target Lock Mark ocres ont 4 7 THESE HP Iob aede tete 2 3 IET Tee Ver uidisse io DE eda eis 2 3 Trackball MAE 5nd ede o
13. D and water temperature T can be displayed on the text window echo sounder combination display and history display With navigation input position can be displayed in latitude and long itude in the normal mode only The estimate mark gives relative fish quantity Press the ESTIMATE key The estimate mark data appears below the mark The fish amount is assessed as between O and 100 where if the mark is filled with the strongest echo color reddish brown the amount is regarded as 100 The size of the estimate mark can be changed with MARK SIZE2 Estimate Mark on the SYSTEM menu Continued on next page 4 6 Description Target Lock Mark The target lock mark automatically tracks the fish school selected by the operator This function requires speed and gyrocompass inputs O e lt x Net Shooting Mark Press the SHOOT key at the instant you shoot the net to display the F net shooting mark on the display The net shooting mark is drawn at own ship s position the moment the key is pressed and moves on the Net Shooting Data own ship s track mark with ship s movement In addition to the 9 00 mark time elapsed and distance run in meters appear from the noo time the key is pressed The mark and its data remain on the screen until the SHOOT key is pressed again Net Sonde Mark These marks appear on the ship s track mark in order at set intervals CD gy qp when a net sonde is connected In the echo sounde
14. Mark Range Bearing mark also turns off the data display MARK DSP 1 Range Rings Bearing Scale Auto Scan Width Ship s Track Turns those marks on off Net Movement Plot MARK DSP 2 Fish MK Connect Fish Tracking MK Fish Track Plot HIST Window Dsp Chooses type of display for HIST window AUDIO Displays echoes within audio sector PRT STBD Displays echoes in specified port and starboard directions HIST DISP GRPH H Slice Displays echoes along upper half of range mark Fish Histogram Turns on off echo intensity distribution for echoes inside estimate mark on the Target Slice display Continued on next page 5 3 5 4 Own Ship Mark 2 w Current Vec CURRENT VEC SAVE PICTURE Own Position Mark N w Current Vec Net Shoot Mark U w Current Vec Current Flow Dir Save Method Turns those marks on off Current Flow Direction displays tidal current direction as To or From Selects how to save echoes Whole Saves echoes and data on whole screen to memory card Est MK Saves echoes inside estimate mark to internal memory QK Save Saves echoes and data on whole screen to internal memory SYSTEM Menu Description The SYSTEM menu can be displayed by pressing MENU and 4 together For help press the HELP key SIGNAL Smooth Echo Rng PROCESS Smooth Echo Cir Delete Color FAR TVG Far TVG Curve TM DSP TM Display Range Selects echo smoothing level in range direction The higher the numb
15. OMIM NGAI NEQOE ETT Vill CONTROL DESCRIPTION Control Layout on Display Unit and Remote Control Box essere 1 1 YUAN TP INC gies nce cence strstr ona T TO TOTO TET 1 2 SUD P3HEl T uocis usua EUMD Fest MU MI E E quU EPDIIMa URN Mete UP M TRDP ORO aiacnani cues 1 4 oUb Panel ata Segue WO Yeo e E E EES 1 5 Isemote ODtrol DO usurae tacet tue cee E E E E EE S cuneate EEE 1 8 OPERATIONAL OVERVIEW Tarno The PO Wer DuC m 2 1 Adjusting Screen Brilliance Control Panel Backlighting sisicctsacvssscaviancewarresweacloncasurelasuswaties 2 1 Lowerne ne Tan CC e EEE T EEN 2 1 IS ere uec DEP MOJE er eases EE S 2 2 belecano a Display Kalite sses 2 3 UU e I AD T 2 3 e E E E E EE EE E E E E O E E E RUE PEE AERE 2 7 Measuring Range and Bearing to a Target tcc cacssesteeceseudoasasnecontesnedactenetanctersiawcleantoweiousaausdauncs 2 7 FINE TUNING THE PICTURE Eliminating Unwanted Feeble Echoes nnnsessseeeenesssssssseeeresssssseereesssssssseeerssssssseeresssssssees 3 1 DUDDPESSIIES scabed Tfl esses E a EEE A aaa S Eee eiea 3 3 Suppressing Seabed and Sea Surface Reflections in Shallow Waters 3 4 Iseicct mo sonar Hie ere re nce and INOISE sspears rren E E EE NER 3 4 Ada e Bea E EE E E E EEE EE 3 6 MARKS AND DATA Marks Data and Display MOde a uices san cecaenansuonnehapuoigeincedescvassgnenssaedn cemunsuansetnsadoaingusctes 4 Permanen
16. Sets angle from ship s bow for sampling echoes in PRT STBD display INTERLOCK Tilt Range You can interlock these items with respective Event Mark items on sonar connected to the CSH 23F 24F Fish Mark If you interlock the range for example Net Shoot Mark anytime the range is changed on the CSH 23F Target Lock 24F it is automatically changed on the sonar connected and vice versa DEFAULTS Defaults Press MENU key to clear all user data set and system menus settings and restore default settings on all system menus 5 7 DATA SET Menu Description The DATA SET menu can be displayed by pressing MENU For help press the HELP key Men m tion COLOR CURVE Sonar Sonar 2 Echo Sounder 1 Echo Sounder 2 For each of these devices you may change settings of echo level versus presentation color curve which you selected at either CURVE at SIGNAL PROCESS on data setting window or system menu Note that Sonar 2 1s not used l First select item to change on COLOR CURVE sub menu and then press the MENU key Display Level 128 255 Color curve can be changed at colors no 4 8 11 13 and 15 Press up or down arrow key to set cursor on color no you want to change curve Press the right or left arrow key to change value Press the MENU key to terminate color curve setting Then the display shown below appears Follow the instructions on the screen CON CUTIVE SEIGLE LX COMMEECM L0 SVE Chum ee id CLOS
17. alarm sounds and the mes sage OVERVOLTAGE appears at the screen center If this occurs retract the transducer turn the power off and check the ship s mains voltage It should be about 100 VAC Unretracted Transducer Warning If the transducer is not completely retracted within 30 seconds after pressing t an alarm sounds and the message XDCR NOT RETRACTED appears at the screen center If this occurs do the following l The power cannot be turned off because the transducer can not be retracted Turn off the main breaker for the display and power supply units to stop operation Confirm that the net 1s not tangled in the transducer Confirm that the breaker inside the raise lower control box mounted on the hull unit 1s on Remove the cover of the raise lower control box Push the Red reset button to reset the raise lower control box Turn on the power and press ff to retract the transducer into the tank If 1t does not retract the main shaft of the hull unit may be bent Turn off the power and manually raise the trans ducer up to the highest position by using the hand crank See the illustration on the next page 13 1 Reset Button Breaker n E a a a j ET u WT amp ha vis 4 Ae e US At gt l k Al M 3 ey rm C ale roO es Hand Crank Hull Unit Figure 13 1 How to manually raise the transducer 13 2 SELF TESTS The CSH 23F 24F has various self tests to ch
18. and on main panel Displays the net shooting mark Saves picture to memory card Present a four or five angle view of echo inside estimate mark Light switch to start Selects display range Replays a stored picture Automatically tillts sounding beam in 2 steps within tilt angle selected by the WIDTH key Adjusts receiver sensitivity Not used Varies the tilt angle of the sounding beam between 5 and 60 Not used Figure 1 5 Remote control box 1 8 OPERATIONAL OVERVIEW Turning the Power On Off Turning the power on Press the ON switch on the main panel The lamp above the switch should light If it doesn t press the TX switch on sub panel 1 Turning the power off Retract the transducer with the f switch and then press the OFF key on the main panel Note The transducer is automatically retracted into the tank even if the OFF switch is pressed before retracting the transducer However make it a habit to retract the transducer before turning off the power Adjusting Screen Brilliance Control Panel Backlighting The BRILL control adjusts screen brilliance and the DIM con trol adjusts control panel backlighting These controls are on the lower part of the main panel Lowering the Transducer Press amp or amp switch The lamp above the switch blinks during lowering of the trans ducer and lights when the transducer is completely lowered In normal use fully lower the trans
19. direction of own ship s heading This data requires gyrocompass input Bearing is displayed in 32 azimuth N N E etc Bearing can also be displayed in figures for example 360 by calling up the SYSTEM menu and selecting BRG READOUT Course Sets own ship s mark location for off center display sets location for mark input The trackball or arrow keys on the remote control box controls this mark Erasable Marks and Data Latest Event Mark D A Event Mark 1 M Latest Event Mark Data D LJIL IE 1L V OOOO cod B EJOS Description These marks depict important locations With speed log and gyro compass connection these marks follow ship s movement In the true motion mode they are stationary Ten marks one latest and nine event marks can be entered When more than ten marks are entered the oldest is erased to make room for the latest The position data of the latest event mark that is horizontal range current depth 1 and bearing TLIC shows the latest event mark s original depth and remains unchanged regardless of ship s movement or tilt angle When the event mark is erased the above data disappears from the screen To erase an event mark place the trackball mark on the event mark and press the EVENT key Continued on next page 4 4 Latest Fish Mark O Fish Mark Fish Mark Fish Movement Qo gt 0000 c O00 s 000 Bearing and Range Marks Bearing mar
20. of the transducer or water leakage inside the ship HULL UNIT 16 2 MENU TREE USER Menu USER MENU CARD UTILITY Execute Execute Execute Execute CARD ECHO DAT Execute CARD NET DATA Execute FUNCTION KEY Execute DATA DISPLAY Event Mark 1 ON OFF Event Mark 2 ON OFF Fish Mark ON OFF On Track Data Depth Temp OFF Text Window ON OFF ES Window Current Sonde MARK DSP 1 Range Bearing ON OFF Heading Mark ON OFF Range Rings ON OFF Bearing Scale ON OFF Auto Scan Width ON OFF MARK DSP 2 Ship s Track ON OFF Net Movement Plot ON OFF Fish MK Connect ON OFF Fish Tracking MK ON OFF Fish Track Plot ON OFF HIST DSP GRPH Hist Window Dsp Audio PRT STBD H Slice Fish Histogram ON OFF CURRENT VEC y w Current Vec ON OFF A w Current Vec ON OFF C Current Vec ON OFF Current Flow Dir From To SAVE PICTURE Save Method Whole Est MK QK Save A 1 DATA SET Menu Execute Execute Execute Execute Execute Exocule Execute Execute Execute Setting range 200 1000 m Orr Net Sonde XMTR NET SONDE Execute Qty plus distances Net Length Setting range 0 3000 m Wire Length Net Width NET PLOT CORR Layer 1 Layer 2 Setting range 0 100 Setting range 0 1000 m Setting range 0 200 m Layer 3 A 2 INIT SET TEST Menu INIT SET TEST MENU HEADING ADJ Heading Adjust BAUD RATE I F CS 120 NMEA EXT KP KP Out Polarity EXT KP Polarity UNITILANGUAGE Dist for Shoot SELF TEST Continuous Gray SIO ECHO TES
21. picture to memory card or internal memory RANGE Selects a picture display range Range selected appears on the display Adjusts receiver sensitivity Using automatic tilting displays the echo inside the estimate mark at TARGET SLICE several different tilt angles VERT SCAN Turn vertical scan display on and off Press when net is cast The net shooting mark net sonde marks and current mark appear at the own ship mark The net shooting mark net sonde marks and current mark move on the ship s track as the ship moves The lamp above the switch lights and time distance run appears on the display until the net shooting mark is turned off Requires external sensor ee E 2 a z s i E e Z Provides range and bearing data from own ship to a target Select target with trackball and then press the R B key A line connects between own ship mark and trackball mark to show bearing to target Changes the tilt angle of the sounding beam between 5 and 60 AUTO TILT Automatically tilts the sounding beam up and down in 2 steps within the tilt angle selected by the WIDTH key The lamp above the key lights when automatic tilt 1s on Sets tilt width in automatic tilt NET COURSE Marks location of net TARGET LOCK Tracks a fish school EVENT CP W Inscribe event mark on the display to find horizontal range depth and bearing to a target Event key can be functioned as the SHOOT key of the remote contro
22. shown E Figure 7 5 Target lock menu 5 Press the up or down arrow key to choose item right or left arrow key to set option 6 Press the END key several times to close the menu 7 5 7 6 Description of target lock items TrackingMethod Sets target lock function target lock mark fish or automatic Track Echo Color Sets minimum echo signal level to track A fish school whose signal level is above the level set here is tracked Fish Speed Limit Sets fish speed at which target lock 1s cancelled Fish Track Window Set distance at which to track fish schoolis track when it exits the tracking window Fish Speed Update Selects update interval of fish speed readout 5 10 20 or 30 sec onds Target Lock Window Sets size of target lock window The window itself 1s not show on the display NORMAL 32 x 32 LARGE 64 x 64 LARGEST 128 x 128 Detecting Fish Schools Aurally Sometimes you may be preoccupied with other tasks and unable to concentrate on watching the sonar picture In such cases it would be a good choice to use the audio function This function enables you to monitor echoes from fish schools and seabed through the built in speaker After you ve become accustomed to monitoring fish aurally you should be able to detect a fish school from a range longer than you can detect it on the screen In addition you may judge whether the fish school is approaching or going away the tone becomes higher
23. sion pulse emitted into the water While a longer pulse 1s advan tageous for long range sounding it has the disadvantage of being poor in discrimination of targets that is ability to separate sev eral closely located targets When searching bottom fish there fore it is useful to shorten the pulselength in order to separate fish echoes from seabed reflections Decrease the PULSELENGTH setting to shorten the pulselength For search of surface and midwater fish in which seabed reflections are not so strong use the longest pulselength 9 2AGC data setting window SIGNAL SIGNAL PROCESS While it 1s ideal to suppress seabed echoes with the AGC con trol alone there are some fishing grounds where this 1s not pos sible The high power sonar has the advantage of long range detection but this can also be a disadvantage since weaker ech oes may be hidden in strong unwanted echoes such as the sea bed If you cannot suppress seabed echoes or sea surface reflections by the AGC control alone use the 2AGC control Normally a setting of 2 or 3 1s suitable For especially strong echoes use a setting of 4 or 5 AR 4 to 1 Adjusts horizontal beamwidth 2AGC function is fixed at 3 0 2AGC function is off l to 5 Larger the number the greater the effect of 2AGC Suppressing Seabed and Sea Surface Reflections in Shallow Waters Data setting window TVG TX OUTPUT In shallow fishing grounds with hard or rocky bottom
24. tease Lue 4 4 Transducer Warning cccssceceeeeeeeeeeeees 13 1 TC Cle obtentu sueco asse uestis 3 5 True Motion Display eeseses 7 14 Rd m E 3 U User Wen uiii snien a oi eire 5 User Menu Tee oboe Todo otii eot 11 1 bi aee or M 3 6 Vertical Scanning Display 8 I IN 1 IN 2
25. 5 to starboard enter 345 BAUD RATE I F CS 120A Set data transmission speed baud of ports Aux Port 1 Set to 2400 bps for I F CS 120A Aux Port 2 Aux Port 3 NMEA EXT KP Ext KP Polarity Choose positive or negative logic for keying KP Out Polarity pulse fed from external sonar or echo sounder to synchronize transmission UNIT Chooses unit of depth readout Lose Dist for Shoot Chooses unit of distance run readout for shooting net meters feet fathoms or passi Temperature Chooses unit of water temperature readout centigrade or fahrenheit Language Chooses language used in menu English Japanese or Korean SELF TEST Performs display unit self test once Performs display unit self test continuously Panel Checks the keys of the display unit and remote control box for proper operation Checks for proper display of colors Checks for screen distortion with gray test SIO Conducts communication test between the display unit and transceiver unit Requires a test plug Continued on next page Mew e eso ECHO TEST Display Test Checks the display unit without connection of other units A test pattern is displayed Demonstration Reserved for future use E S NET REC E CN Audio Scale Displays depth scale on right or left side of echo sounder display ES Draft Adjust Sets ship s draft to read true depth on echo sounder display ES 2 Select Selects equipment connected to ES 2 port echo sounder or net recorder
26. Combination mode C1 OO C2 LIL c3 1 E Net Sonde Data S1 LILIL S2 LIE ILI S3 LILIL Nav Data S LILI LI C OUI D LILILIL T LILJ LJ Own Ship Data LILI LIL TL IL N LJLILI LILILLIL IE Estimate Mark OOL Estimate mark data Description With gyrocompass or speed log connection own ship s track is plotted by a solid line When the length of the line exceeds five times the range the oldest part of the track is erased This mark can be displayed with current indicator input The tidal current marks are displayed on the net shooting mark 1 and net sonde marks QJ UP J The tidal current markers shows tidal current speed in three layers 1 3 selected on the tidal current indicator The tidal current speed is shown by the length of the tidal current mark Note however that no tidal current mark appears 1f the tidal current speed is less than 0 2 kts Current direction can be shown as to or from by selecting CURRENT VEC Current Flow Dir on the USER menu In the normalmode with text speed direction and depth of the current are shown for three layers C1 C2 C3 In the echo sounder combination and history modes only the speed appears C1 C2 C3 on the echo sounder combination or history display When the net sonde is connected the depth of the net sonde trans mitters appears in the text window echo sounder or audio area With appropriate sensors speed S course C water depth
27. E De UC PT CIS MENO hey L0 camel Chun ge tid CLOSE DBE meu IM LID er Continued on next page 5 8 Mew Am ction CHANGE COLOR Sonar 1 You can customize the color of these items Sonar 2 according to user request etc Note that Sonar Echo Sounder 2 is not used For display color change on Marks Sonar you can change color according to Menu selection by COLOR key 1 First select item to change on CHANGE COLOR sub menu and then press the MENU key Before Display R G B Color QO m CO amp O1 O OO CO 2 Using the arrow keys place the cursor on color segment you want to change color If you are changing the color of marks or the menu press the HELP key to display guidelines for changing their colors 3 Press the up or down arrow key to change value between 0 and 100 You can press and hold down the key to get faster change 4 Repeat steps 2 and 3 to change other colors 5 Press END key to terminate color setting Then the display shown below appears Follow the instructions on the screen COW CE SEDLE LX COMMElEM L0 SVE CAULE tid CLOSE DBE meme Inr MENO KEN L0 Cartel CUIRE amd CLOSE DRE LEIL PIESS LND key Continued on next page 5 9 Mm m Bem 5 10 NET SHOOT Net Diameter PLAN Tilt Interlock NET SONDE Net Sonde XMTR Net Length Wire Length Net Width NET PLOT CORR Layer 1 Sets estimated ship s turn diameter necessa
28. F Figure 5 2 HIST DSP GRPH menu 4 Operate the up and down arrow keys in sub panel 1 to select menu item and the right and left arrow keys to select option 5 Press the END key to close the menu Press the key again to display picture Note The HELP key provides menu operating information Menu screen location and display mode Menu screen location depends on display mode as shown in the figure below Menu i Normal Mode Combination Mode Figure 5 3 Menu screen location and display mode USER Menu Description Table 5 1 User menu description Menu Menu Item Description List Lists contents of memory card CARD Save Saves control and menu settings to memory card UTILITY Delete Deletes data from memory card Initialize Formats memory card CARD ECHO Save Saves echo inside estimate mark stored in internal DAT memory by MEMO key to memory card CARD NET Save Saves net shooting data stored in internal memory DATA to memory card Register Saves customized settings of range gain display FUNCTION KEY mode TX ON OFF user menu system menu and data set menu to function key Event Mark 1 Turns those marks on off ES Window selects Event Mark 2 tidal current data or net sonde data which are Fish Mark displayed on the E S combination display while LOU On Track Data shooting the net Text Window ES Window Range Bearing Turns those marks on off Note that turning off Heading
29. LR UUJLRUUJ IR LICOD OPERATOR S MANUAL COLOR SCANNING SONAR MODEL CSH 23F 24F p FURUNO ELECTRIC CO LTD NISHINOMIYA JAPAN FURUNO ELECTRIC CO LTD Your Local Agent Dealer 9 52 Ashihara cho Nishinomiya Japan Telephone 0798 65 2111 Telefax 0798 65 4200 All rights reserved m E Printed in Japan FIRST EDITION NOV 1997 APR 05 2002 piene MT DAMI CSH 23F 24F 00080818600 OME13050F00 A SAFETY INSTRUCTIONS A WARNING Do not open the equipment Hazardous voltage which can cause electrical shock exists inside the equipment Only qualified personnel should work inside the equipment Immediately turn off the power at the switchboard if water leaks into the equipment or something is dropped in the equipment Continued use of the equipment can cause fire or electrical shock Contact a FURUNO agent for service Do not disassemble or modify the equipment Fire electrical shock or serious injury can result Do not place liquid filled containers on the top of the equipment Fire or electrical shock can result if a liquid spills into the equipment Immediately turn off the power at the switchboard if the equipment is emitting smoke or fire Continued use of the equipment can cause fire or electrical shock Contact a FURUNO agent for service Make sure no rain or water splash leaks into the equipment Fire or electrical shock can result if water leaks in the equipm
30. LT SCAN lever to set a scan ning depth Your selection appears at the upper right hand corner of the display like D120M Select a scanning depth which does not display the seabed so you won t hide any echoes in the seabed When the seabed is hard and rocky it may appear even if may appear even if the scanning depth is set shallower than the seabed depth In such case set the scanning depth further shallower To suppress sea surface reflections open the data setting window and set the VER BEAM in the SONR BEAM item to other than 0 Upper part of the beam dents as shown at right To escape from the vertical scanning mode press the VERT SCAN key Press VERT SCAN key Set VER BEAM to suppress m Sea surface reffection Wave 1 3 4 Set scan depth 60M 80M 200M Figure 8 2 Vertical scanning 8 1 Display Indications Appears in vertical scanning mode ewe ew ew ewe Trackball Mark 25 o Depth set by Data in crores TILT SCAN ee ee ey Horizontal range i i DEPTH lever and depth not displayed Fish Movement Data Distance moved and course not displayed Event Mark Data Not displayed Figure 6 3 Indications of vertical scanning display Application to Bonito and Tuna Fishing 8 2 Tracking of bonito and tuna presents a special challenge to the sonar operator He must try to keep them within the sonar beam a formidable task considering their high sp
31. Mark 2 QJ Each press of or deletes Fish Mark O mark selected one by one Own Ship Mark A Ship s Track x Each press of or deletes 1 5 of overall length of track Turning marks on off through the user menu The following marks can be turned on off through the USER menu User Menu Display Item ES Window U w Current Vec AA w Current Vec C w Current Vec MARK DSP 1 MARK DSP 2 CURRENT VEC This page is intentionally left blank 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 1s 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 Narrow tilt angle fe ad Only half of 76 7 vertical beam width captures the seabed B Flat seabed Tilt angle 20 or more Seabed is displayed narrower and in stronger colors when compared to A C Sloping seabed Tilt angle 20 or more 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 12 1 Seabed echoes 12 1 Fish Schools A fish school appears as a mass of echoes on the screen The color of the mass shows the density of fish schools on the so
32. SS zm Ny 3 w SS ET p v s 25 7M Figure 6 6 Catching PORT STARBOARD HORIZONTAL SLICE DISPLAYS The port starboard display or horizontal slice display may be displayed by pressing the HIST key The display shown de pends on the setting of HIST DSP GRPH in the USER menu Port Starboard display The port starboard display takes echoes along the bearing port starboard selected on the SYSTEM menu and displays them on the lower 1 3 of the screen If the bearing width is set to 90 degrees for example the CSH 23F 24F displays echoes in both port and starboard directions The picture is scrolled vertically to downward Port Starboard Sampling Angle Display Sector Picture Advance Direction Port Direction ie a irection A Port starboard sampling angle can be set between 0 and 180 degrees Setting sequence SYSTEM menu HIST DISPLAY PRT STBD Sample Fixed at 6 degrees Figure 9 1 Port starboard display 9 1 9 2 Horizontal slice display 120 degrees of the picture in the horizontal direction 1s shown for a given depth D in the horizontal slice window at the bot tom of the display The area to display may be selected with the R B key Range Mark Bearing Mark Echo inside this area is shown in window Horizontal Slice Width 120 Fixed Range Mark Cross Cursor Color Bar Latest Picture Own Ship
33. T Display Test ES Audio Scale ES Draft Adjust ES 2 Select ES NET REC Net Rec Range Defaults Program Recall EVENT KEY amp DEFAULTS Data Format Auto Tilt Setting range 0 359 2400 4800 bps 2400 4800 bps 2400 4800 bps 2400 4800 bps 4800 9600 bps Negative Positive Negative Positive Meter Feet Fathom Passi Mile Meter Feet a oF English Japanese Korean Execute Execute Execute Execute Execute Execute Execute Execute Left Right Setting range 0 10 m ES Net Rec Setting range 80 640 m Execute Execute EVENT SHOOT CIF NMEA1 5 NMEA2 0 WIDE NARROW Under development A 3 SYSTEM Menu Continued on next page A 4 SIGNAL PROCESS FAR TVG TM DSP TARGET LOCK BRG READOUT DATA DISPLAY MARK SIZE 1 MARK SIZE 2 ES NET REC Smooth Echo Rng Ci Delete Color Far TVG Curve TM Display Range Tracking Method Track Echo Color Fish Speed Limit Fish Track Window Fish Spd Update Target LK Window Course Current Data Event Mark Other Marks Control Setting Text Window Data Trackball Mark Target Lock Mark Event Mark 1 Event Mark 2 Fish Mark Own Ship Pos MK Own Ship Mark Net Shoot Mark Estimate Mark Current Vector Range Rings Ship s Track MK ES 1 Color Curve ES 2 Color Curve Picture Advance Advance at Shoot Net Rec Picture CoD O 2 3 m O 5 O Setting range 0 to 3 Set
34. TA DISPLAY in the USER Text window menu Normal scanning picture appears on the upper 5 8 of the screen and the signal fed from the echo sounder on the lower 3 8 This mode is suitable for judging fish school concentration When two echo sounders are connected each pressing of the E S key alternately selects echo sounder 1 or echo sounder 2 Note that a net recorder can be connected as echo sounder 2 select it on the ES sub menu in the INIT SET TEST menu Normal scanning sonar picture appears on the upper 5 8 of the screen and the history display on the lower 3 8 Three types of history displays are available Audio Port Starboard and Horizontal Slice You can select which one to display on the USER menu Selecting a Display Range Operate the RANGE control to select a display range The range selected appears at the top center of the screen Setting the Tilt Angle The tilt angle shows the direction to which the sound wave is emitted When the sound wave is emitted horizontally the tilt angle is said to be zero degrees and when emitted vertically 90 degrees To set a tilt angle operate the TILT lever ae Watch the tilt angle indication at the top right T e sacle corner on the screen The tilt angle can be set in one degree steps from 5 upward to 60 downward degrees Finding a proper tilt angle is important when searching for fish Seabed echo and tilt angle Case 1 Tilt angle 30 to 40 degrees This
35. This page is intentionally left blank FOREWORD A Word to CSH 23F 24F Owners Congratulations on your choice of the FURUNO CSH 23F 24F Color Scanning Sonar We are confident you will see why the FURUNO name has become synonymous with quality and reliability For over 40 years FURUNO Electric Company has enjoyed an enviable reputation for qual ity marine electronics equipment This dedication to excellence is furthered by our exten sive global network of agents and dealers This equipment is designed and constructed to meet the rigorous demands of the marine environment However no machine can perform its intended function unless operated and maintained properly Please carefully read and follow the recommended procedures for op eration and maintenance We would appreciate hearing from you the end user about whether we are achieving our purposes Thank you for considering and purchasing FURUNO equipment Features The CSH 23F 24F is a full circle multibeam electronic color scanning sonar which detects and displays fish schools on a 15 21 inch non glare high resolution color CRT The main features of the CSH 23F 24F are e Vivid 16 color color echo strength dependent display for improved recognition of sea bed fish school concentration distribution and volume Memory card for storage and replay of sonar picture whole screen or echo inside esti mate mark net shooting data ship s track tidal current data etc
36. aT CURRENT SETTINGS for item selected TVG TX TOGGLE Item selection keys Setting change keys Select item Change control setting OPER P SET key Opens closes data setting window Figure 1 4 Sub panel 2 Sub panel 2 control description ue Description Normal tad i Setting NEAR E s receiver gain within Adjusts receiver gain between E 100 m and 400 m FAR Adjusts receiver gain beyond L Sets Tx output power 9 is maximum power v Sets Tx cycle 9 is normal CYCLE setting fastest 0 synchro nizes with external KP m pi mo fos Sets Tx pulselength 9 is normal EM setting OUTPUT Continued on next page 1 5 Main Item Setting Normal Description Item Main Sub Range Setting NL 0 10 Rejects unwanted echoes 3 Automatically reduces receiver eain against strong echoes such SIGNAL nue oa as seabed Adjust so fish echo is i PROCESS displayed near seabed M Suppresses seabed echoes If 2AGC p AGC alone cannot suppress 0 seabed echoes use 2AGC Selects echo level versus presen SIGNAL CURVE 1 4 tation color curve The higher 5 the setting the easier it is to see weak echoes on the screen Rejects random noise and inter ee S IR 0 3 ference by other echo sounders 0 Or sonars Adjusts echo afterglow which is useful for watching echo move ae 0 4 ment The higher the setting the i longer the afterglow re
37. aeeeeeeeeeeeeeaaas 7 10 Measurin Fish School Speed iu ciiin tro iade ae qe iot teBa dese weve saan oeda dues reviens quus ASi 7 11 Tne Event Mark qur T 7 12 Truc Moon DEPA esea eset open due dta odere paruis aoe b ru fLe e SEM RO EP c ted 7 14 Plotina Net Eocauonm Mai souder tete ede o bacc dE tede tete gr Marni aan mann 7 15 Observings Net Bena VOR 25e uie Sete oM ER uela quus Quee ouuir aqcue doce ouate dust Nro um teen di UA de ied 7 16 Tareet SINCE Dis Play S codes dese ar a E ini braces 7 17 VERTICAL SCANNING DISPLAY Usine Vertical scanniie Display d osistesutes roti ih eU oai Io apeu b ie a io Sus qo Ds eas De Ee PUE UD boe 8 1 Application to Bonito and Tuna Pisin 9 so uio oti ice dort ate octo R 8 2 PORT STARBOARD HORIZONTAL SLICE DISPLAYS Por Starboard Dis play cilii narincevaneeaindasccledesedinlanuaiwdebedielaneeutenou tio iio t editio die Cod cud 9 Horizontal sce DIS play acoso etae edu Reslupc d dendo Mesas fondu lanes autos dnce DOES Ou Td POEM UE ed 9 2 MEMORY CARD OPERATIONS Initializins Memory CANS uoces edu Ete Seen a a uiid loma incidat 10 1 Savo IN ud LO LS CNRC EH 10 2 Transferring Echo Data from Internal Memory to Memory Card seeeeuusse 10 2 Savino Ner SMOG MG Ditar a desi eu etia ite ott suu edits Eolo ote dues detect ued cuis 10 3 Repl3vine Sdyed Dal een wee Ne rn Rory eT nem RC intenti E e ter Rie ne ue Ua 10 4 Deleting Memory Card Content Saesson e a ia
38. and data are calculated according to tilt angle Note 3 The bearing mark moves to the target lock mark loca tion when target lock becomes active Bearing to the target lock mark is shown Note 4 Target lock is temporarily disabled when the distance to the tracked fish school is less then 40 m It is resumed once the distance becomes more than 40 m Note 5 The target lock works up to a tilt angle of 60 degrees In the drawing below the tilt angle is fixed at 60 degrees between B and C During this period however calculation is continu ously being performed When own ship comes to point C target lock is resumed Figure 7 4 Target lock and tilt angle Setting target lock conditions 1 Open the sub panel 1 2 Press the MENU key while pressing and holding down the down arrow key in sub panel 1 3 Select TARGET LOCK with the arrow keys 4 Press the MENU key SYSTEM MENU TARGET LOCK Select item with T keys and press MENU key Press END key to close menu Setting Tracking Method TGT Mark Fs H Aw h k h Track Echo Color Setting range 1 to 10 E weakest echo to Fish Speed Limit Setting range 1 to 15 d yes n Set distance at which to trace fish school track 5 Choose update interval for ie fish speed readout Fish Track Window 10m Setting range 2 to 20 Fish Spd Update H Al 15 sec 0 sec Choose size of target track Target LK Window window not
39. ark data slant range horizontal range depth bearing Event mark data horizontal range depth first event marked depth bearing Fish mark data distance moved direction and speed between two latest fish marks Estimate mark data estimation of fish volume by echo strength Net shooting data time and distance run between turning on and off of net shooting mark Setting change data new setting ap pears in larger characters for 5 seconds when changed Current data current speed direction layer depth 6 Features 3 HULL UNIT XDCR Travel Raising Time Lowering Time Driving System Allowable ship s speed Navigation data ship s speed heading water depth water temperature Own ship s position latitude longi tude Net sonde data net depth distance to seabed water temperature sinking speed of net Custom mode interference rejector afterglow noise lim iter delete color memory card save and recall of picture echo inside estimate mark and net shooting data auto matic tilt automatic target tracking target lock external KP sync heading up north up fish alarm overvoltage warning unretracted transducer warning remote control External sensor required 18 knots 15 knots during 15 knots 12 knots during raise lower operation raise lower operation SP 3 This page is intentionally left blank INO Gant te ee tos M dai ebd PM DIA M IN er rae 3 3 P E E is cas i
40. d then save Replaying Function Key Settings from a Memory Card Press the CARD REPLAY key on sub panel 1 Note When function key settings are replayed from a memory card current settings on all function keys are erased Therefore if necessary save current function key settings to another memory card before replaying 6 3 This page is intentionally left blank ADVANCED LEVEL OPERATION Finding Fish School Center When you want to find the center depth of a fish school use the auto tilt function which automatically scans the tilt angle within the selected width There are two automatic scan range WIDE and NARROW which can be selected by the INIT SET TEST menu Note that the NARROW is under develepment Table 7 1 Automatic scan range at menu setting WIDE of OTHER INIT SET TEST menu Range m Width 1 Width 2 Width 3 60 100 every 6 transmissions 150 200 every 4 transmissions 300 400 i 7 i every 2 transmissions 500 600 800 1000 more than 1200 For example when the RANGE control TILT lever and WIDTH key are set to 800 m 8 and width 1 respectively the tilt angle varies at every transmission as follows 8 8 10 35 10 39 12 35 12 39 14 14 39 12 12 10 39 10 35 8 8 6 gt 6 34 39 4 3 2 39 2 4 5 4 5 6 5 6 98 gt i Tilt Angle Setting Figure 7 1 Tilt angle setting Table 7 2 Automatic scan range at menu setting NARROW of OTHER INIT SET TEST menu
41. dow SIGNAL SIGNAL PROCESS This control is similar to the interference rejector on echo sound ers and radars It is effective for rejecting random noise and sea surface reflections in rough sea conditions Set it so that noise is just eliminated Do not use an unnecessarily high setting since it may also reject small wanted echoes Changing Tx cycle data setting window TVG TX CYCLE When other sonars operate nearby at the same transmission in terval as that of own ship s sonar an interference ring caused by other sonars is displayed To erase the interference ring from the screen reduce the CYCLE on the data setting window Interference Tx cycle high Tx cycle lowered Figure 3 3 How CYCLE works Note When the sonar is used in shallow water with the range set between 60 m and 200 m and Tx cycle at 9 seabed reflec tions caused by the 2nd to the last transmission may appear on near ranges Reduce the Tx cycle setting to 2 or 3 to sup press them 3 5 Setting F shift data setting window SONR BEAM SONAR If interference cannot be suppressed by the interference rejector IR or Tx cycle change the setting of F SHFT from 1 to 2 Noise limiter data setting window SIGNAL SIGNAL PROCESS Weak unwanted reflections colored light blue or green appear when the water is dirty plankton layers exists or due to ship s noise The noise limiter NL can reduce the effects of these unwanted reflect
42. ducer The transducer ex tends 1200 mm below the ship s hull pro viding stable and cavitation free soundings If the transducer may become entangled in the net after shooting the net for example partially raise the transducer with the amp switch This raises the transducer by 400 mm transducer extends 800 mm from ship s hull Hull unit with 1600 mm full and 1200 mm mid protrusions are also available CAUTION Do not exceed speed noted in the speci fications when operating the equipment or lowering or raising the transducer The transducer may become damaged Do not press the f switch during lowering of the transducer and do not press the amp or amp switch during raising of the transducer The equipment may become damaged 2 1 Selecting a Display Mode 2 2 The CSH 23F 24F provides three display modes normal sonar picture echo sounder E S combination and history display combination Those modes may be selected with the NORM E S and HIST keys Table 2 1 Display mode description NORMAL d pour E S A HISTORY Description The sonar picture appears over the entire screen This mode is useful for detecting and tracking fish schools The default display area is 1 3 times the range but it can be changed to 1 6 times the range on EXT KP TM DSP in the SYSTEM menu Navigation information can be displayed in the text window at the screen bottom by turning on DA
43. e Function keys for customized operation Menu driven operation with help screen e Wide variety of display modes normal sonar picture echo sounder combination histrical display combination port starboard display horizontal slice target slice and unique ver tical scanning e Various marks and alphanumeric fishing information for intuitive operation e Remote control box for armchair control of major functions e High power MOS FET transmitter for reliable operation e Automatic screen degausser vii System Configuration STANDARD OPTION REMOTE CONTROL BOX REMOTE DISPLAY SUB DISPLAY CSH 116 CSH 106 CSH 236 NN DISPLAY UNIT m CSH 230F CSH 23F CSH 2400F CSH 24F CSH 23F only NENNEN SHIP S MAINS REEL 100 VAC 16 SHIP S MAINS MEME quuMMMEdMMMMM EOIGD EI 100 VAC 19 50 00Hz esse nen TRANSMITTER UNIT CSH 310 16 50 60 Hz TRANSFORMER INTERFACE UNIT PT 400 CS 120A ELZLLILIILLLLLLl lll l llll SPEED LOG decent rer 1 lUbresetesiseee ia AD CONVERTER POWER rrvemmmMe NAVIGATOR ger RECEIVER UNIT CSH 220A iii CURRENT INDICATOR t COLOR VIDEO SOUNDER E E LEAD VI 1100A i INTERFACE UNIT 7 koe _ TS S Va i fo CENTE SL SZ 7 WF ECHO SOUNDER COLOR VIDEO SOUNDER SHIP S MAINS NET SONDE 50 60 Hz CS 170 HULL UNIT CSH 21080 800 mm stroke CSH 21120 1200 mm stroke CSH 21160 1600 mm stroke viii CONTROL DESCRIPTION
44. e of the screen by selecting ES NET REC on the INIT SET TEST menu 4 7 This page is intentionally left blank MENU OVERVIEW Many functions are carried out through the menu system which consists of the USER SYSTEM DATA SET and INITIAL SET DATA menus The menu you will use most often is the USER menu How to open USER Press MENU SYSTEM Press D and MENU together DATA SET Press D and MENU together Press MENU and ON together INIT SET TEST Press and hold down until the buzzer sounds All LEDs light while keys are held down USER Menu Operation The menu operating procedure is the same for all types of menus Below is the basic menu operating procedure for the USER menu 1 Press the MENU key to open the USER menu USER MENU Select item with f 4 keys and press MENU key Press END key to close menu CARD UTILITY CARD ECHO DAT CARD NET DATA FUNCTION KEY DATA DISPLAY MARK DSP 1 MARK DSP 2 HIST DSP GRPH CURRENT VEC SAVE PICTURE Figure 5 1 USER menu 5 1 0 2 2 Operate the arrow keys in sub panel 1 to select a menu As you move through the menu each item initially shown as blue on gray reverses to gray on blue to show selection For example select the HIST DSP GRPH menu 3 Press the MENU key to display menu selected USERMENU HITDSPGRPH 7 Select item with amp f amp keys and press MENU key Press END key to close menu HIST Window DSP AUDIO PRT STBD Fish Histogram OF
45. e procedure two or three times to verify reliability Note 2 The time and distance between pressings of the FISH key should be as long as possible to increase accuracy of mea surement For more accurate measurement repeat the procedure two or three times The Event Mark 7 12 Note 3 Each time the FISH key is pressed the latest fish mark and ship s speed mark change in the sequence shown below Fish key pressed once e l Fish key pressed twice Qe V A Fish key pressed three times X Q d d Fish key pressed four times X X ess The event mark is useful for finding the horizontal range depth and bearing to a location some distance from current position This function requires speed and heading inputs There are two types of event marks event mark and event mark 2 10 of each type of mark can be displayed The unit marks the latest one by for event mark 1 and by D for event mark 2 Older event marks are displayed by across plus event number event mark 1 or an inverted Y with event number event mark 2 When you enter more than ten event marks the unit erases the oldest mark one by one Du QA K A Latest Figure 7 10 Event marks Entering an event mark 1 Set the trackball mark where you want to place an event mark latest event mark 2 Press an EVENT key The horizontal range depth and bear ing to the event mark appear at the bottom left corner of the screen ea 234 Horizontal range
46. eck it for proper operation If a test reveals equipment malfunction do not attempt to check inside the equipment There are no user serviceable parts inside the equipment WARNING Do not open the cover There are no user serviceable parts inside Refer any repair work to a qualified technician Opening the Self Test Menu 1 Turn on the power while pressing and holding down the MENU key 2 Press arrow keys to select SELF TEST Select item with t keys and press MENU key Single Execute Continuous Execute Panel Execute Color Execute Gray Execute SIO Execute Figure 14 1 SELF test menu 3 Press up or down arrow key to select test desired 4 Press the MENU key to start test 14 1 Self Test Description Single test The ROM RAM and other devices of the display er sees unit are checked once Control is returned to the m SELF TEST menu when the test is completed BM cor DPRAM OK P W OK RAM OK 105 0575 2xx 105 0576 1xx ROM OK 105 0381 2xx 105 0381 1xx ROM OK RAM OK 105 0382 1xx ROM OK RAM OK 105 0353 1xx ROM OK RAM OK 105 0352 1xx ROM OK RAM OK RAM OK 105 0415 1xx ROM OK 105 0226 1xx Note Above program numbers are for CSH 23F Figure 14 2 Single test Continuous test The devices of the display unit are checked con SoMa tinuously RAM MEMCARD Figure 14 3 Continuous test 14 2 Panel test This test checks the key
47. eed and penchant for leaping and diving The CSH 23F 24F however with its wide vertical scanning beam makes this task easier Searching Neither the naked eye nor binoculars can continually track fish schools which make lightning quick runs between the surface and midwater A sonar however provides a continuous view of several hundred meters of sea area around the boat both at the surface and below it Tracking If you are visually tracking a fish school which characteristi cally leaps and dives regularly or a school with a flock of birds hovering over it the school will scatter once the vessel ap proaches thus you will lose sight of the school The CSH 23F 24F provides continuous pictures of underwater conditions so you can always know where a fish school is For tracking the schools which leap and dive often the vertical scanning mode is especially effective Figure 6 4 Tracking Approaching e The sonar lets you view fish school movement continuously thus you can approach a school confident of a good catch e While a flock of birds hovering over the sea surface is usu ally a good indication of the presence of a fish school the sonar can better verify fish school size E C AE s UD Figure 8 5 Approaching 8 3 8 4 Catching While the sonar operator monitors the sonar for other fish schools the crew can scatter bait and water to attract fish to the boat Es WRN Ss SE
48. elect picture to save to memory card 4 Press the MENU key The lamp to the right of the memory card drive lights while picture data is being saved 5 Press the END key several times to return to the USER menu Saving Net Shooting Data How net shooting data is saved The unit starts accumulating net shooting data when the SHOOT key 1s pressed When net shooting is concluded by pressing the SHOOT key again the echo inside the estimate mark and other net shooting data are saved to the internal memory Note how ever that if ship s movement between pressings of the SHOOT key is less than 1 3 of the net length the unit judges that net shooting is suspended and does not save net shooting data Transferring net shooting data to memory card 1 Press the MENU key 2 Press arrow keys to select CARD NET DATA and press the MENU key 3 If desired according to on screen instructions select fish species to be added to net shooting data as a comment and then press the MENU key 4 If desired enter fish quantity estimate by a selecting number with up or down arrow key b selecting place with right or left arrow key c registering value by pressing the MENU key Net shooting data contents Net shooting data 1s comprised of the following Echoes inside estimate mark the ones which are displayed the first time the SHOOT key is pressed e Ship s position date time e Ship s track net movement current direction water dept
49. en the data setting window and select SONR BEAM Set UP TM in the SONAR menu to TM This function requires speed and heading inputs Although the true motion mode 1s available for use in all modes use in the combination mode is not recommended since the own ship mark may move into the combination picture area Figure 7 12 True motion display Plotting Net Location Mark Before shooting net you will decide the shoot timing consider ing the water current direction distance to fish school and mov ing direction of the fish school Use the net location mark as a guide to decide the timing This function requires speed and heading inputs 1 Place the trackball mark on fish school to be caught 2 Press the NET COURSE key The net location mark 1s de picted by dotted ring with a diameter equivalent to that of your purse seine net being centered on the trackball mark Trackball mark Net location mark Figure 7 13 Net location mark 3 To adjust the location of net location mark move the trackball mark 4 When the location is finalized press the NET COURSE key again The dotted ring is replaced by solid ring and the lamp above the NET COURSE key lights 5 To erase the mark press the NET COURSE key again You can adjust the diameter of the net location mark on NET SHOOT PLAN in the DATA SET menu 7 15 Observing Net Behavior 7 16 With net sonde connection you can observe net behavior after the thro
50. ent A WARNING Keep heater away from equipment A heater can melt the equipment s power cord which can cause fire or electrical shock Use the proper fuse Fuse rating is shown on the equipment Use of a wrong fuse can result in equipment damage Do not operate the equipment with wet hands Electrical shock can result CAUTION Do not exceed 18 knots when operating the equipment and do not exceed 16 knots when lowering or raising the transducer The transducer may become damaged The zinc block attached near the transducer must be replaced yearly The junction between the transducer and main shaft may corrode which can result in loss of the transducer or water leakage inside the ship Do not use the equipment for other than its intended purpose Use of the equipment as a stepping stool for example may result in personal injury or equipment damage Replace the monitor when the picture becomes difficult to see The average life of the monitor is about 10 years Replace it when the picture be comes difficult to see to protect vision A warning label is attached to the equip ment Do not remove the label If the label becomes soiled or illegible contact a FURUNO agent or dealer TABLE OF CONTENTS FOREWORD A Word to CSH 23F 24F Owners cccccecceccccececceccsceccccscesceccscecescecesceccscesescscscesescesescesens vil Be ONS ERE E T E PK vil Sa SU
51. er the higher the smoothing effect The setting range is from 0 to 3 Selects echo smoothing level in circular direction The higher the number the higher the smoothing effect The setting range is O to 3 You can delete undesired echoes and noise in certain colors from the display This is useful for eliminating noise and detecting large fish schools The setting range is O to 10 If you want to delete echoes displayed in colors weaker than the 5th weakest color for example set to 4 Selects suitable FAR TVG curve to compensate for propagation loss of sound at 100 m or farther 30log is the normal setting 25log Suitable for searching small bottom fish in shallow water or near coastline 30log Standard setting 35log Select for long distance searching in low sounding frequency 40log Use this setting when long range gain higher than 35log is required Selects a display range in the true motion display from 1 3R and 1 6R Note To enable KP synchronization open sub panel 2 choose TVG TX and TRANSMIT and then set CYCLE to 0 TARGET LOCK pe Method This option determines what item to track in pw lock target lock mark or fish echo see Echo Color Select the weakest color to track in the target mandi function Fish Speed Limit Fish Track Window Continued on next page Sets limit speed kt for tracking of fish When speed of fish exceeds limit set here target lock is cancelled Selects range 1
52. g range setting about 800 meters which is approaching own ship Adjust the tilt to keep the fish school in the center of the sonar beam namely fish school is displayed in strongest colors possible Confirm that the fish echo is displayed in the same color as it approaches If the color suddenly changes to weaker colors as the fish enters MEDIUM and NEAR ar eas the TVG is improperly set Adjust the TVG If this again produces sea surface reflections and noise try to remove them with AGC and NL controls Note If the above procedure does not produce satisfactory re sults the TVG curve can be changed on the SYSTEM menu The 30 log setting is normal The 25 log setting is useful for searching fish schools near shorelines or shallow waters The 35 log or 40 log setting raises the gain on a long range and is suit able for searching tuna bonito etc which are usually searched with high gain setting Ask for FURUNO dealer for detail Suppressing Seabed Tail AGC data setting window SIGNAL SIGNAL PROCESS The AGC functions to automatically reduce the receiver gain only against strong echoes such as the seabed or a large fish school Since weak echoes remain unaffected a small fish school becomes easier to detect Adjust it so that the AGC works only on seabed reflections Do not set it too high weak echoes may be missed Pulselength data setting window TVG TX PL The pulselength control determines the length of the transmis
53. h and or water temperature e Net sonde mark 10 3 Replaying Saved Data Whole picture or echo inside estimate mark l 2 3 Press the RECALL key on the main panel Press the right or left arrow key in sub panel 1 to select item to replay The left arrow key selects older data for example data in memory card the right arrow key newer for ex ample data in internal memory After viewing picture press the RECALL key to escape Note that the priority order for replay of echo inside estimate mark is internal memory saved picture followed by memory card contents Net shooting data l 2 Press the NET REPLAY key on sub panel 1 At the screen bottom comments are listed Select the item to replay After viewing the data press the NET REPLAY key again to escape Deleting Memory Card Contents 10 4 You can delete unnecessary data from a memory card l 2 Press the MENU key to display the USER menu select the CARD UTILITY menu followed by the MENU key select the DELETE and press the MENU key The card con tents are listed at the screen bottom Select data to delete Press the MENU key Press the END key a few times to close the menu TURNING MARKS DATA ON OFF You can turn marks and data on or off through the data setting window or the USER menu Turning marks on off through the data setting window Select DELETE MK to delete the following marks Event Mark CD Event
54. ions raising the setting causes them to become bluish to background color Normally a setting of 3 or 4 1s suffi cient Adjusting Beamwidth Beamwidth can be adjusted at SONReBEAM BEAM on the data setting window Table 3 1 Beamwidth adjustment menus Application Set to 0 for normal use The higher the setting the narrower the beam This control may be used together with the AGC and NL controls to suppress sea surface reflections and seabed echoes Note that when 2AGC function is on the horizontal beamwidth is adjusted at the 2AGC item on the data setting window Settings AR and 4 to 1 adjust the beamwidth About 500m In order to reduce surface reflection VER controls upper part of the beam dents near own ship as shown the above 3 6 MARKS AND DATA Marks Data and Display Mode Normal display mode Heading Data Trackball Mark Data Slant Range Range Data Horizontal Range Tilt Angle Data Depth Instantaneous tilt angle in True Bearing automatic tilt or target lock Electronic Bearing Scale Bearing Mark Range Mark Fish Mark Latest Fish Mark Trackball Mark Heading Mark North Mark Latest Event Mark Estimate Mark Older Event Mark Own Ship s Mark Estimate Data C hin Ship s Track Water Depth or Water Temperature Range Ring Data Range Ring Event Mark Data Horizontal Range Fish Movement Data Distance Moved Present Depth Event Mark Depth Course True Bearing S
55. ires external sensor Mark Data Description Trackball Mark Data Trackball mark data Oooo Y Slant range gt 0000 Horizontal range Loooo i Depth B Ooce B Bearing Bearing is shown in 360 or 180 indication system relative to ship s heading In the latter case B is indicated as follows BL JLILIP on the port side BLILILIS on the starboard side Range Data Shows the range scale set with the RANGE control RETE JE TE Tilt Angle Data The tilt angle appears below the range The tilt angle can be changed TOQ in 1 steps within the range of 5 to 60 In target lock and automatic LJL1 tilt control the instantaneous tilt angle appears in parentheses Accordingly both are equal when target lock is on In automatic tilt the upper indication shows the tilt angle set by the TILT lever and the lower indication the instantaneous tilt angle at which the sonar actually works Continued on next page Mark Data Own Ship s Mark A North Mark or Heading Mark v Heading Data Trackball Mark B Description Shows own ship s present position The direction of the arrow shows ship s heading This mark moves with ship s movement in the true motion mode On all other modes it is fixed at the screen center When the CSH 23F 24F is connected to a gyrocompass the mark is calledthe north mark and points North If there is no gyrocompass input it is the heading mark and points in the
56. ker Range and Bearing Mark Data BLILILI ROO Heading Mark Range Rings Electronic Bearing Scale s These marks are inscribed on the screen by pressing the FISH key Ten fish marks can be entered Each time the key is pressed the fish mark appearance changes on the screen as follows Ist press of FISH key 2nd press of FISH key lt gt 3rd press of FISH key 4th press of FISH key Fish movement from the fish speed mark lt gt to the latest fish mark lt gt is shown by distance course C and speed S at the lower right corner of the screen These marks are used for monitoring echoes through the loudspeaker and also for displaying horizontal slice picture If the target lock function is on the bearing marks follow the movement of the target lock mark This data appears when the bearing and range marks are displayed The heading mark is drawn with a dotted line Heading mark data appears at the top of the screen The range rings are inscribed at intervals of 1 4 of the range in use Range ring data is also provided every two range rings The range ring interval can be changed from 1 4 to 1 2 through the menu The electronic bearing scale 1s available with gyrocompass connection It rotates with own ship s movement Continued on next page 4 5 Ship s Track Mark Ro Tidal Current B Mark Tidal Current Data Normal mode C1 U O OOO OUL M c2 O O O0O0 O OOL M C3 U O OOO OOL M
57. l box ESTIMATE 1 2 Compare volume of two fish schools Measures fish school speed OFF CENT Relocates selected target Lamp above key lights when off center function is on Un z as DIM Adjusts the backlighting of the control panels and the brightness of the lamps above keys Adjusts screen contrast Adjusts screen brilliance Adjusts volume of built in loudspeaker which monitors a target appearing along the bearing marker TRACKBALL Follows on screen movement of the trackball mark to enter marks and off center the screen gt W Q CIZO O F 2 Se iz 1 3 Sub Panel 1 ON pev E OY wr COLOR N TX P T LE E Figure 1 5 Sub panel 1 Sub panel I control description MENU Opens closes the menu END e When the menu is displayed it terminates menu operation and returns control to the sonar picture When in a sub menu it returns control to previous sub menu HELP Provides operating information for current menu res CARD REPLAY Replays card stored control and menu settings COLOR Changes display color among four choices NET REPLAY Replays internally stored net shooting data To replay press key to light lamp above it select item to replay and press the key again TX Press to transmit when transducer is lowered The lamp lights during transmission 1 4 Sub Panel 2 data setting window This example shows settings STEM of TVG and TX TVG TX selected oN
58. lly stronger when their reflecting properties are nearly equal The sonar operator will be quite inconvenienced if these echoes are directly displayed on the screen since he can not judge the actual size of the target from the size of echoes dis played on the screen To overcome this inconvenience the TVG function is incorporated It compensates for propagation loss of sound in water amplification of echoes on short range is sup pressed and gradually increased as range increases so that simi lar targets are displayed in the similar intensities irrespective of the ranges to them The CSH 23F 24F has three TVG functions NEAR MEDIUM and FAR and they mainly compensate for propagation loss on short middle and long ranges respectively centered at the ranges shown below The higher the TVG setting the greater the ampli fication of echoes Figure 3 1 Principle of TVG The TVG is also used to suppress unwanted echoes and noise which appear in a certain range area on the screen such as sea surface reflections and cruising noise To set TVG properly do the following How to adjust TVG 1 Open sub panel 2 2 Select TVG TX 3 Set TVG NEAR MEDIUM and FAR to 5 These are the standard settings and you can maintain them in most cases 3 1 4 When sea surface reflections or plankton layers disturb the picture decrease appropriate TVG option by one or two steps by pressing minus key 5 When fish school is located on a lon
59. lt in loudspeaker Output 2W Frequency 1 1 kHz with reverberation effect SP 1 3 Transceiver Transmitter Receiver High power MOS FET amplifier with 10 step power reduc tion switch Low noise superheterodyne continuously scanning beam forming TVG AGC signal processing interference rejec tor horizontal vertical beam switching 4 Beamwidth 3 dB and Tilt Angle TX Beamwidth RX Beamwidth Tilt Angle 2 DISPLAY 1 Picture Display 2 Color 3 Display Mode 4 Display Marks 5 Alphanumeric Data SP 2 360 horizontal x 13 to 16 vertical 9 to 18 horizontal x 13 to 16 vertical 5 upward to 60 downward continuous NOTE Beamwidth depends on transmitter frequency CSH 23F PPI display on 15 inch non glare high resolu tion color CRT CSH 24F PPI display on 21 inch non glare high resolu tion color CRT 16 colors sonar picture 4 colors marks a Normal Mode with or without data display b Off center c Echo sounder combination normal plus echo sounder d Audio combination e Port starboard combination f Horizontal slice combination g Target slice h True motion Own ship mark heading mark range rings range bearing mark trackball mark event mark net shooting mark fish mark estimate mark bearing scale north mark ship s track current mark net sonde mark target lock mark sonar picture range tilt angle gain Trackball m
60. m with a width of approximately 12 degrees in the vertical direction vertical beam width The tilt angle is indicated by the angle between the center line of the beam and the horizontal plane Then if the tilt angle is set to O degrees the center line is parallel with the sea surface and one half of the emitted sound goes upward toward the sea surface This causes one half of the emitted sound to be reflected toward the transducer and displayed on the screen as sea surface reflec tions When the sea is calm since the sound 1s reflected just like a light hitting a mirror at a narrow incident angle it propagates away and the sea surface reflections become negligible However 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 reflections and to search surface fish schools effectively the tilt angle is usually set between 5 and 6 degrees so the upper portion of the beam becomes almost paral lel with the sea surface When the sea 1s rough it 1s often set to a little larger angle Surface Tilt angle 0 15 Surface Tilt angle 5 6 15 Figure 2 2 Tilt angle and sea surface reflections 2 5 wu ugdeq Suitable tilt angle The figure below illustrates the relationship among tilt angle depth and detection range Refer to it to find out the suitable tilt angle for a given depth detection range Tilt angle and beam coverage Range m
61. mains Sets depth range of echo RANGE 16 sounder picture Sets range of 160 m DN RNG Pos net recorder downward ES1 sounding den GAIN 0 10 Adjusts receive sensitivity 5 SHIFT 0 Sets display De of x sounder picture sets range o m ES SOIL net recorder upward sounding NL 0 10 Rejects blue dots caused by 0 dirty water on entire screen ES1 I l Net COLOR 0 9 E mpi s displayed in 0 Recorder colors specified ON Eliminates interference by other Bs OFF sonars or echo sounders EP ap Each pressing erases oldest mark p g DELETE p among event mark event MARK e mark fish mark own ship O mark or DELETE MK X key to erase DELETE Each pressing deletes 1 5 of MARK dieses overall length FISH Fish Track is deleted 2AGC and HOR functions cannot be used together If one is used the other is automatically set to 0 Continued on next page 1 6 Main Setting Normal escription Item Main Range Setting SONAR 12 Choose 1 for single sonar or 1 2 for dual sonar Shifts Tx frequency Choose 1 SONAR P SHIFT for normal use Selects presentation mode UP TM among North up Nup Heading up Hup True Motion TM SONR BEAM Sets horizontal beamwidth of Rx HOR 0 10 beam The higher the number the narrower the beam Sets vertical beamwidth of BEAM transmission beam 0 is normal setting I and 2 for wide VER Ud beam 3 to reduce surface clutter 4 to suppre
62. marks press their respective keys Estimate Estimate mark 1 mark 2 Estimate Estimate mark 1 mark 2 data data Figure 7 8 Estimate marks and their data Measuring Fish School Speed Latest fish mark To ensure a good haul it is important to estimate the direction and speed of the fish school before shooting the net You can do this with the FISH key If the tidal current data is used together with fish speed data you can determine the timing of the net shooting more efficiently This function requires speed and head ing inputs 1 Place the trackball mark on the center of a fish school and then press the FISH key The latest fish mark lt gt appears on the fish school 2 Wait 1 to 2 minutes 3 Place the trackball mark on the same fish school selected in step 1 and press the FISH key The latest fish mark lt gt ap pears on the target and the 2nd latest fish mark lt gt appears on the location selected at step 1 At the bottom left corner of the screen the distance between the two fish marks and fish school course and speed appear 4 If you want to delete fish marks and fish speed marks open data setting window select DELETE MK and then press the FISH key Latest fish mark Fish movement Figure 7 9 How to measure fish speed Note 1 Movement is calculated using ship s speed and bearing inputs Accordingly pitching and rolling may affect the calcula tion For better results try th
63. nar beam To find distribution and center point of a fish school try several different tilt angles A Sea surface fish Tilt angle 5 to 10 Seabed echo not Fish displayed because of narrow tilt angle Sea surface reflections are present Sea surface reflections B Midwater bottom fish Tilt angle 30 or more Fish echo which appears before seabed can be detected Seabed Fish school Large midwater fish school is Tilt angle 0 to 20 present Fish echo which appears together with or after seabed can be detected Fish school Seabed Figure 12 2 Fish schools 12 2 Sea Surface Reflections To reduce sea surface reflections set the tilt angle to 5 or higher so the upper edge of the sonar beam does not hit the sea surface or adjust TVG When a narrow tilt angle is used sea surface reflections cover a large area as illustrated below Tilt angle Indication Sea surface reflections Figure 12 3 Sea surface reflections Wake A wake produced by own ship or another ship can be a strong reflecting object when a narrow tilt angle is used As the wake appears as a thick continuous line it can be easily distinguished from a fish school A wake contains many air bubbles which attenuate ultrasonic energy making it difficult to sound beyond the wake Other NT NE NX UN 4 Own ship FN Own ship s screw noise Wake produced O CARTED Own ship s wake Own ship s produced
64. navendetice teu E n eni Ea E 3 3 AUDI Pep OT T 7 5 B DOT QL ns aeaesaaaeesanse a6 oo cessi actes eee roce 3 6 Color B Ar s ccu EM LI D LA 4 7 DATAXSBEIDIWMI MU treno ctio tei 5 8 Data Setting Window eeeeeeeeee 1 5 Display Mode sic esate ee A 2 2 Echo Sounder Combination Display 4 2 Eliminating Unwanted Feeble Echoes 3 Estimate M AEE toe octo teo ioco ee 4 6 Event Mates scm ccu aa use cuiat ose 7 12 F Fiabe CMO oea A aA 12 4 BS pA Ar eree aa 7 8 Fish MEE 2 2 eter eorr deseo iS 4 5 Fish MONTO x aso aed asis 4 5 Fast SCHOO si sicot a 12 2 Bish SCHOO Center nanenane 7 1 Pism School Speed e 7 11 Fisi Trac Eciam 7 3 ESSE 3 edite ee OR Pe ee cce me extet 3 6 Function Key 3e i t tet Eten s 6 1 G AEN re ere eer nen Re irte mn a tes LEES 2 7 H Meade Datdnsesrentiscni ena en petibus 4 4 Headimno Makenio 4 5 Histoty Display iei rr rone ter tte ER 4 3 HOR aio i esi co attacnsbasen alita enti iemastas ee anes 3 6 Horizontal slice Display 9 2 INIT SET TEST Menu eene 5 11 Entertgee Unm e 14 5 Interference Rejector IR 3 5 CTH e lO lest celeste atten E 12 4 M Main Pane hennen o ets obtu 1 2 Marks and Dala eaea e itus 4 Memory CE is ceectese santet bua bin npe oe Beso Ra 10 1 Memory Card Initialization 10 1 Ment CC uie euS Me MeL Id A 1 N N Be dots dori gp a 4
65. peed Slant Range to Range Mark True Bearing of Bearing Mark Requires external sensor Figure 4 1 Marks and data appearing in the normal display mode 4 1 Normal display mode w text Time from net shooting mark ON Distance run from net shooting mark ON Control Setting Net Sonde Mark Older Fish Mark Current Mark Net Shooting Mark Own Ship s Position Data Latitude Navigational Data Longitude Ship s Speed Ship s Course Water Depth Water Temperature Net Sonde Data Current Data Current Speed Direction Layer Depth Figure 4 2 Marks and data appearing in the normal display mode w text Echo sounder combination display een ga Taag ie d 1 Target Lock Mark Net Sonde Mark Net Shooting Mark at oe E S Picture Advance Range Data Ship s Speed Ship s Course Water Depth Water Temperature Net Sonde Data Color Bar When net shooting mark is off tidal current data E S Range Scale appears instead of net sonde data You can display tidal current data always by selecting CURRENT on the DATA DISPLAY sub menu Requires external sensor Figure 4 5 Marks and data appearing in the echo sounder combination display mode 4 2 History display Current Data p Current Speed Color Bar Range Scale Requires external sensor Figure 4 4 Marks and data appearing in the history display mode Permanently Displayed Marks and Data Requ
66. r combination mode they also appear in the echo sounder picture showing depth of 10 pts max the net sonde transmitters with bars extending vertically from the marks E S Picture Advance Picture advance on the echo sounder combination mode automatically Range Data changes to ship s speed dependent advance rate from the moment the SHOOT key is pressed provided there is speed log input The o 0 E S picture advance range data shows the distance between the right and left edges of the echo sounder picture window in the ship s speed dependent advance Since the net length plus wire length set on the DATA SET menu is used as this distance data the echograms obtained during casting the net are displayed just across the E S window Set net length and wire length on NET SONDE in the DATA SET menu Control Setting When the switches listed below are operated the new setting is noted at the top of the screen in larger characters for five seconds The auto tilt width and auto scan width also appear upon turning on the AUTO TILT and AUTO SCAN functions Control Display Control Display RANGE RI j AUTO TILT TILT T L P AUTO SCAN GAIN GI BRILL TVG TVG DIM L TX TX LIL Color Bar The 16 color bar appears at the right hand edge in the echo sounder and history displays E S Range Scale The range scale for the echo sounder picture appears in the echo sounder combination mode You can display it on the right or left sid
67. rget lock marks may be erased as follows 1 Open the sub panel 2 2 Select DELETE MK 3 Press the key for DELETE MARK FISH Choosing target lock mode Two types of target lock are available target mark and fish Target mark Tracks the target lock mark changing range and tilt angle according to ship s movement The fish school itself 1s not tracked Fish tracking Tracks fish schoolis horizontal movement chang ing range and tilt to track movement Do the following to select target lock type 1 Open the sub panel 1 2 Press the MENU key while pressing the up arrow key in sub panel 1 to display the SYSTEM menu 3 Select TARGET LOCK and then press the MENU key 7 3 7 4 4 Select Tracking Method and then press the MENU key 5 Select method desired 6 Press the END key several times to close the menu Tracking target lock mark 1 Operate the trackball to place the trackball mark on the fish school you want to track 2 Press the TARGET LOCK key to light the lamp above it The target lock mark appears on the fish school and tracking begins Tilt angle is automatically changed to keep the target lock mark location within the sonar beam 3 To stop tracking press the TARGET LOCK key again Note 1 If the target goes out of the picture or the tilt angle 1s greater than 60 degrees the lamp above the TARGET LOCK key flashes to call your attention Note 2 Target lock position
68. rk Show expanded view of fish echoes Bar graph display of echo Expected to be useful for estimating fish signal level distribution for species since bar graph characteristics may echoes inside estimate mark be different with fish species Echoes inside estimate mark at This presentation gives a three dimensional different tilt angles depth view of a fish school to help judge vertical distribution of the fish school C Echoes at North Mark different tiit Bata angle Mark Number Estimate Mark NOTE 1 is shown only for echoes inside estimate mark 1 2 Number of displayed max 5 depends on both tilting range and range to echo For Estimate Mark 2 For Estimate Mark 1 Figure 7 15 Target slice display 7 17 This page is intentionally left blank VERTICAL SCANNING DISPLAY The vertical scanning display provides a wide fish eye view of underwater conditions from the surface to the seabed The fig ure below illustrates the concept of the vertical scanning mode in comparison with the normal sonar beam The vertical scan ning mode helps you keep fast moving fish such as bonito and tuna within the sonar beam Normal Mode Vertical Scanning Mode Figure 6 1 The concept of the vertical scanning mode Using Vertical Scanning Display l Press the VERT SCAN key on the main panel The lamp above the switch lights indicat ing that the vertical scanning function is ON Press the TI
69. rm zone 6 Press the key Starting point Alarm zone End point Figure 7 6 How to set the fish alarm zone Note There must be at least three degrees difference between the starting and end points to get a fan shaped alarm zone as shown in a and b Otherwise the unit paints a 360 degree alarm zone as in c and d Relocating Fish School for Easy Observation 1 Operate the trackball to place the trackball mark on the posi tion where you want to relocate the own ship mark 2 Press the OFF CENT key 3 To move the own ship mark back to the screen center press the OFF CENT key again Fish Press the school OFF CENT key Own ship mark Place trackball mark here for example Own ship mark moves to trackball mark position Figure 7 7 How to relocate fish schools 7 9 Comparing of Fish School Concentration 7 10 You can get an estimate of the volume of two fish schools by using the two ESTIMATE keys 1 Operate the trackball to place the trackball mark on a fish school and then press the ESTIMATE 1 key The estimate mark appears on the fish school Relative vol ume is shown by a figure between 0 and 100 below the es timate mark When inside the mark is filled with reddish brown volume figure is 100 2 Operate the trackball to place the trackball mark on another fish school and press the ESTIMATE 2 key 3 Compare estimate figures for each fish school 4 To turn off the estimate
70. ry for shooting net to get accurate depiction of net location mark which you can display by pressing the NET COURSE key The setting range is 200 to 1000 meters in 10 meter steps Choose ON to interlock diameter of net location mark with tilt angle When you lower the tilt angle the on screen net location mark enlarges For example the net diameter is set for R meters When the tilt angle is 45 the diameter of the on screen net is 2 R meters Sets number of net sonde transmitters and their distances between each other Sets net length The setting range is 500 to 3000 meters in 100 meter steps Sets wire length between own ship and net The setting range is 100 to 1000 meters in 100 meter steps Sets net width The setting range is O to 100 meters The movement of the net during net shooting is plotted by using water current speed and direction fed from external sensor The external sensor feeds that data for three depths layers thus net movement will be different at each layer Determine degree of difference among layers considering net sea conditions vessel construction etc If 50 is set for example on screen net moves at speed of 50 of water current speed INIT SET TEST Menu Description The INIT SET TEST menu can be displayed by pressing MENU and ON together HEADING ADJ Heading Adjust Sets deviation angle of HEAD mark on hull unit from ship s bow If deviation is 15 to port enter 15 degrees 1
71. s of the main and sub pan els and the remote control box Press and release each key Its on screen location should display 1 when the key is pressed and 0 when released To escape from the test reset the power Color test This test checks for proper display color To escape from the test reset the power PANEL TEST Oo O O O O O O O O Figure 14 4 Panel test COLOR TEST Figure 14 5 Color test 14 3 Gray test This test checks for screen distortion To escape from the test reset the power Figure 14 6 Gray test SIO test This test checks for proper communication between the display unit and transmitter unit and requires a jumper plug To escape from the test reset the power SIO TEST SIO OK SIO OK SIO1 OK SIO2 OK SIO1 OK Figure 14 7 SIO test 14 4 Interface Unit CS 120A Self Test 1 Open the cover of the interface unit 2 Find DIP switch DP 1 on the lone circuit board Turn switch 6 on to start the self test The results of the check appear on the digital display beside the DIP switch 3 Turn the DIP switch off after completion of the test eS Lo B00 REEE Digital display If the readout shows 0 the unit is functioning properly If it is not working properly any of the following nine numerals or six alphabets appear I 1d JU oC C To O Oo Los che tha el ba hy lg ha L JEC L re ee 2 ie eee SSE u u Figure 14 8 In
72. seabed reflections often interfere with wanted fish echoes and they can not be eliminated sufficiently with the aforementioned TVG and AGC controls especially when the TILT is set to a larger angle in order to track fish schools approaching within 400 m In such cases try to reduce the output power by adjusting the OUTPUT control instead of turning down the gain The picture becomes clearer when output power is reduced rather than when the GAIN is decreased as illustrated below WRONG MEI Fish echo Fish echo TVG and AGC weakened adjusted with OUTPUT kept high CORRECT METHOD Fish echo Reduce OUTPUT with GAIN kept constant Figure 3 2 How to suppress seabed and sea surface reflections in Shallow waters Rejecting Sonar Interference and Noise 3 4 While observing the sonar picture you may encounter occasional or intermittent noise and interference These are mostly caused by on board electronic equipment engine or propeller noise or electrical noise from other sonars being operated nearby Identifying noise source To eliminate noise effectively you should first identify the noise source as follows 1 Turn off the TX switch and operate all on board equipment one by one while observing the picture 2 Run the boat at various speeds to check if the noise is speed dependent If neither of the above two steps has effect on the picture adjust one of the following Interference rejector data setting win
73. sh Mark Own Ship Mark MARK SIZE 2 Own Ship Mark Select the size of these marks for large or Net Shoot Mark small Estimate Mark Current Vector Selects the length of the current vector for long or short Range Rings Selects interval times range in use of range rings 1 4R or 1 2R Ship s Track MK Chooses length times range in use of ship s track Continued on next page DATA DISPLAY _ Control Setting Keep OFF for normal operation Sonar and TGT Lock options are for factory use only 5 6 Mm m 0 iserption ES NET REC ES 1 Color Curve Selects echo level versus presentation color curve for echo sounder 1 Linear Weak echoes are not as conspicuous as in log setting Useful for eliminating weak echoes Log Weak echoes are painted in stronger colors The higher the setting the easier are weaker echoes to see on the display ES 2 Color Curve Same as above except for echo sounder 2 Picture Advance Sets picture advance speed for the echo sounder display Advance at Shoot Chooses Sonde to have ship s speed dependent advance of echo sounder picture while shooting net and KP to have advance synchronized with transmission Net Rec Picture Selects net recorder picture display mode up down or down sounding HIST DISPLAY H Slice Width Selects width for sampling echoes along upper half of range marker in horizontal slice display The higher the setting the wider the sampling area PRT STBD Sample
74. ss false bottom echoes 20 ON OFF ON OFF Turns on off scanning tilt angle OFF TILT WIDE 2 10 4 16 6 20 Sud mM NARROW 1 4 2 6 3 8 AUTO ON OFF ON OFF Turns on off scanning EBL OFF which scans audio sector AUTO SCAN Chooses automatic scanning WIDTH width among 10 20 40 and 60 ON OFF ON OFF Turns fish alarm on off Sets echo level at which fish alarm sounds Numbers 0 15 FISH LEVEL 0 15 correspond to 16 presentation 10 ALARM colors 0 deep blue 15 reddish brown ZONE Press Sets alarm zone using the ALM AUDIO key trackball and key Chooses audio sector among B eee BE 30 60 90 180 and 330 Chooses length of reverberation AUDIO REVERB for audio Larger number gives longer reverberation Press Sets direction of audio sector centers using the trackball and key m HOR and 2AGC functions cannot be used together If one is used the other is automatically set to 0 ap a 2 10 10 1 7 Remote Control Box Each press displays water temperature or depth at screen elects which display unit to center for about five seconds ontrol in multiple display unit Stallation ises lowers the transducer Raises transducer Mid protrusion TGTLOCK O Full protrusion ESTIMATE NETCOURSE Turns on transmitter shown on key or shift screen center 1 3 Same as 1 3 on main panel 4 5 Same as
75. terface unit CS 120A cover opened 14 5 This page is intentionally left blank INPUT DATA SELECTION Selection of Data at Interface Unit CS 120A Nav data and fish data input from external equipment can be turned on or off at DIP switch DP 1 in the Interface Unit CS 120A Ship s speed and bearing for track plotting true motion target lock etc put Device 1 S2 _ Select navigation which feeds Gyrocompass Speed log OFF nav data for drawing ship s track EN by switch S1 and S2 GPS or DR Note 1 Eli EN o EE DR or Current Indicator Note 2 Sisndard Note 1 GPS has priority Switched automatically from GPS to DR when setting GPS data is absent for more than 61 seconds or ship s speed measured with GPS is 0 2 kts or less If DR is not available when switched from GPS to DR heading readout is fixed at O degrees and ship s track is plotted by using the last GPS data obtained before switching to DR If you still require speed heading data from GPS even though ship s speed is less than 0 2 kts set the GPS format to DR Note however that the heading direction becomes erratic if the ship s speed is less than 0 2 kts Note 2 Use this setting when both DR and current indicator are available Normally DR data has highest priority and 1s switched to current indicator data if the DR data 1s absent for more than 61 seconds The heading data for the bearing scale 1s always provided from the current indicator When DR
76. tilt angle will display the entire seabed since it is captured by the full width of the beam Case 2 Tilt angle 10 to 20 degrees This tilt angle will only display half the seabed since it 1s only captured by the lower half of the beam Case 3 Tilt angle 0 to 10 degrees This tilt angle may or may not capture the seabed since the re turning echo is weak 2 3 2 4 How to discriminate fish echoes from the seabed The figure below illustrates how two fish schools 8 and b are displayed on the screen using three different tilt angles Case 1 Tilt angle 30 to 40 degrees Fish school is obscured by the seabed Case 2 Tilt angle 10 to 20 degrees Fish school 1s located above the seabed midwater Case 3 Tilt angle 0 to 10 degrees Fish school is located close to the seabed Case 1 Case 2 Case 3 Seabed Figure 2 1 Fish echo and tilt angle Points to consider Normally a vertically distributed fish school is a better sonar target than the seabed because it reflects the transmitted pulse back toward the transducer Incase 3 both fish schools and b are presented Gener ally speaking however midwater fish schools tend to be larger than bottom fish schools and they are often displayed near the seabed on the display e tis difficult to detect bottom fish when they are not distrib uted vertically Tilt angle for surface fish Sound emitted from the sonar transducer forms a circle shaped bea
77. ting range 0 to 3 Setting range 1 to 10 25log 30log 35log 40log 1 9H 1 6H TGT Mark Fish Auto Setting range 1 to 10 Setting range 1 to 15 kts Setting range 1 to 10 m 15 30 45 60 Sec Normal Large Largest 32 Cmps 360 True 32 Cmps 360 True 180 Rel 360 Rel OFF Sonar TGT Lock 1234 S L m S m L E 9E L EH S EH D A S A D 9 O L A S A A es Aw QJ SK 32 X 32 64 x 64 Normal Long 14HR 1 2R 5R 10R 20R 40R Linear log1 log2 log3 Linear log1 log2 log3 1 1 1 2 1 4 1 8 KP Sonde UP Down Down 1234 Continued from Setting range 0 180 previous page ON OFF ON OFF ON OFF on OE ON OFF TargetLock ON OFF Execute A 5 This page is intentionally left blank SPECIFICATIONS Model CSH 23F 24F _ 1 Freq 24 kHz 2 Freq 28 kHz 3 Freq 32 KHz 1 GENERAL 1 m 7 TX Cycle Pulselength Basic Range my m TX Cycle Pulselength Range sec msec T center OFF Off center ON 0 10 100 0 133 0 14 0 39 0 5 2 E RN NUR NN 33 Om 39 x x Ws 94 L ex m wc uec 59 9539 9 93m 199 o em ewe fo unu NOTE 1 Transmission cycle 1s selectable in 10 steps 2 External keying pulse can be used as a trigger 3 Maximum range scale does not mean maximum range Detection capability depends on nature of fish school and sea condition 2 Audio Search Sector 30 60 90 180 330 selectable Method By bui
78. tly ts played Marks and Data apc sis doses siot pa sad dussanmecunenessavuengier a 4 3 Erasable Marks and Dati T 4 4 MENU OVERVIEW USER Menu RETO UO ERR 5 I USER Men Descrip IOlTo us eesemdomgerqusaiiott n aR aE Eaa en EESE 5 3 S TEN Mom ID SCEEDUOE seers A E E E S 5 5 VAES SECM om D CDO E E EE E 5 8 INIT SET PEST Men Descrip Otsason EEEE EEEE SSE ESEE 5 11 FUNCTION KEYS Programming Ine PuncHom Keys adserit m a dices maa ce rly ia 6 1 Replayinea PUunCuion Key iaceo in phic achinasaaesswauudasauaiuansaeauisan E 6 1 Punetion Key Pine TUMI sien Seen Eon o CUR nies Aa esI red on UN Ae PU Lou ioo teu Ecoute atl 6 2 saving Function Key Settings to a Memory Card seeeeeessssssseseeeen nnne eee 6 3 Replaying Function Key Settings from a Memory Card eseeeeesssseeeeeen 6 3 ADVANCED LEVEL OPERATION Pinging Fish School Center riea aa turi sae arse QAM baie socks fata apre udo tiba n bae LE aetas 7 1 Trackine a Fish SCGnoOol lareet lOCKR 22 dieior iet qut ib epe tates piede ba anes 7 2 Detecting FishiSehliools Arall y iine aem desc tet date e HER QE Ee oM bia Ds be aoo sed be dod ia ada a docs 7 7 Tie PSI PUERO sioe ritos ve taedia ines elena ideis ednto diae eu eae ete ean ene 7 8 Relocating Fish School for Easy Observation eeeeessssssesseseeeeeeneneeeeeeenn nn 7 9 Comparing of Fish School Concentration cccccccccssssssseccececceeeeeesseeeceeceeea
79. to 10m out of tracking window When fish tracks out of this window the equipment judges the target is moving and traces its track 10 is the normal setting 5 5 Mm tem ierption TARGET LOCK Fish Spd Update Selects update interval of fish speed readout You can select from 15 seconds 30 seconds 45 seconds or 60 seconds 60 is the normal setting Target LK Window Selects size of target lock window in pixels 64 x 64 normal 96 x 96 large or 128 x 128 largest BRG READOUT _ Course Selects unit of readout for course and bearing between fish marks 32 compass bearing or 360 true bearing Current Data Displays current data readout in 32 compass bearing 360 true bearing 180 relative bearing or 360 relative bearing Event Mark Displays event mark readout in 32 compass bearing 360 true bearing 180 relative bearing or 360 relative bearing Other Marks Displays location of trackball mark and bearing marker in 32 compass bearing 360 true bearing 180 relative bearing or 360 relative bearing Text Window Data Chooses external sensor data to display at screen bottom 1 provides all available data Other options provide less data in larger characters MARK SIZE 1 Trackball Mark Select size and shape of trackball mark mark or rectangle available in large or small size Target Lock Mark You can select the size of these marks for Event Mark 1 large or small Event Mark 2 Fi
80. when screw noise own ship turned Figure 12 4 Wake appearance on the display 12 3 False Echo by Sidelobe An ultrasonic wave is emitted only in the direction set by the TILT lever however there are some emissions outside the main beam These are called sidelobes The energy of the sidelobe 1s fairly weak but when the water is comparatively shallow and the bottom 1s rocky and hard strong signals are detected by the sidelobe These are represented on the display as a false echo as shown below Mainlobe Sidelobe echo Sidelobe echo The seabed echo detected by sidelobe appears at a certain tilt angle when the sidelobe points vertically Figure 12 5 Sidelobe echoes Noise and Interference 12 4 Interference from a sonar on another ship appears on the screen as shown in A below This interference can be suppressed by changing the CYCLE setting in TVG TX on the data setting window Interference from electrical equipment on board own ship appears as shown in B below Noise from marine life ap pears on the display as shown in C Electrical interference and marine life noise can be suppressed with IR on the SIGNAL menu in the data setting window A Interference from B Electrical C Marine life noise other sonar interference Figure 12 6 Noise and interference WARNINGS Overvoltage Warning If the input voltage to this unit rises above 125 VAC the over voltage detection circuit activates an
81. when the school is approaching and lowers when the school is going away 1 Operate the trackball to place the trackball mark to the direc tion you want to monitor through the speaker 2 Press the R B key The bearing mark appears on the display Echoes in a 30 60 90 180 or 330 sector centering the bearing mark are monitored through the speaker You can adjust speaker volume with the AUDIO control 3 To change coverage area open the data setting window sub panel 2 and change width of AUDIO SECTOR 4 To scan the coverage area open the data setting window turn on AUTO SCAN and set scanning WIDTH Note You can display the signal monitored through the loud speaker on the history display combination window by pressing the HIST key if AUDIO is selected on the HIST Window DSP menu in the USER menu 7 7 The Fish Alarm 7 8 The fish alarm sounds an audible alarm when a fish echo above a preset strength enters an alarm zone You set parameters for the fish alarm at ALM on the data setting window ON OFF Turn alarm on or off Level Set echo strength level which will activate the alarm Zone set alarm zone 1 Open the data setting window and select ALM AUDIO 2 Press the key of the ZONE item 3 Operate the trackball to place the trackball mark on the start ing point of the alarm zone 4 Press the 4 key 5 Rotate trackball clockwise to select the end point The dis play paints a fan shaped ala
82. wing of the net on the echo sounder combination mode Accurate depiction of net sonde position depends on proper set ting of the distances between net sonde transmitters You can set those distances on NET SONDE XMTR in the DATA SET menu This function requires speed and heading inputs 1 Press the SHOOT key just upon throwing the net into the water Then the net shooting mark appears at the own ship mark and also at the right edge of the echo sounder picture Afterwards whenever a net sonde transmitter on the net 1s thrown into water a net sonde mark appears on own ship mark and moves with ship movement The depths of net sonde transmitter units are digitally displayed at the lower left of the screen after the receiving transducer 1s placed into water The net sonde marks appear also on the echo sounder picture as below where the length of vertical line shows the depth of the net sonde transmitter unit 2 To erase net sonde mark and associated data press the SHOOT key again Net Mark Net Sonde Mark Nereng Net Shoot Mark Mark Net Depth Figure 7 14 Net behavior Target Slice Display Using automatic tilting the target slice mode displays the echo inside the estimate mark at several different tilt angles depth To access the target slice display press the TARGET SLICE key The table and illustration below describe the target slice mode No in m Display Information Applications Echoes inside estimate ma

Furuno CSH-23F/24F User's Manual

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