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Furuno MODEL CSH-73 User's Manual

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1. Q m O1 O 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 keys to change value between 0 and 100 You can press and hold down the keys to get faster change 4 Repeat steps 2 and 3 to change other colors 5 Press MENU key to terminate color setting Then the display shown below appears Follow the instructions on the screen Color curve setting is completed To save change and close the menu press MENU key To cancel change and close the menu press END key Continued on next page 13 5 Menu Item Description NET SHOOT PLAN Net Diameter Sets estimated ship s turn diameter necessary 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 Tilt Interlock 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 NET SONDE Net Sonde XMTR Sets number of net sond
2. Control Display Control Display RANGE R AUTO TILT TILT TOO AUTO SCAN GAIN GLI BRILL TVG TVG DIM TX TX L TRAIN RO IL Color Bar E S Range Scale The 16 color bar appears at the right hand edge in the echo sounder and history displays The range scale for the echo sounder picture appears in the echo sounder combination mode You can display it on the right or left side of the screen by selecting ES NET REC on the INIT SET TEST menu 4 7 This page is intentionally left blank USER 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 Menu How to open USER Press MENU SYSTEM Press gt and MENU together DATA SET Press and MENU together Press MENU and ON Press and hold down until the buzzer sounds All LEDs light while keys are held down INIT SET TEST The SYSTEM menu DATA SET menu and INIT SET TEST menu are for use by service technicians See page 16 1 for de tails 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 keys and press MENU key Press END key to close
3. s1 000 mitters appears in the text window echo sounder or audio area S2 S3 00 Nav Data With appropriate sensors speed S course C water depth D and 5 111 water temperature T can be displayed on the text window echo E sounder combination display and history display 00 Own Ship Data With navigation input position can be displayed in latitude and long N itude in the normal mode only E Estimate Mark Q Estimate mark data 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 0 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 Mark Description Target Lock Mark The target lock mark automatically tracks the fish school selected by the operator This function requires speed and gyrocompass inputs Q Net Shooting Mark Press the SHOOT key at the instant you shoot the net to display the P 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 additio
4. GEN EM FUIL E E EEEREN 2 1 Adjusting Screen Brilliance Control Panel Backlighting 2 1 Lowernng the Transducer siones saa baec t aeae Ee EE SEE RE EEE EU 2 1 Selecting a Display Mode ict ccvessnsaancdvtcasecantessisontiansacttdsnsiauhcaaeatoesabeeaectbacesstdpaanniearaee 2 2 Selecting Display Rani de E E a ED EEEE 2 3 selling the TANIE D A E 2 3 Adj s ne he NET nner T TET ern To 2 4 Measuring Range and Bearing to LIFBel eint 2 4 FINE TUNING THE PICTURE Eliminating Unwanted Feeble Echoes 3 1 Suppressime e vea E A E aA E E Ee SENI DUE 3 3 Suppressing Seabed and Sea Surface Reflections in Shallow Waters 3 4 Rejecting Sonar Interferenceand Noise sineresia EVIL R EE 3 4 Adj sting BeamwWidth RAE AEREA RARA EKARA RETENE 3 7 MARKS AND DATA Marks Data Display 4 1 Permanently Displayed Marks and Data Dvd a 4 3 Erasable Marks and Dd qao re atom 4 4 USER MENU OVERVIEW USER EMO estan Polon 5 1 USER patres EE PU 5 3 FUNCTION KEYS Piocraimiims the Pun rom Keys duti
5. HOR and 2AGC functions cannot be used together If one is used the other is automatically set to 0 Remote Control Box Each press displays water temperature or depth at screen center for about five seconds SP SELECT selects which display unit to ontrol in multiple display unit istallation aises lowers the transducer Raises transducer Mid protrusion Full protrusion Turns on transmitter Press this key for more than one second for stable operation Press to enter mark Shifts trackball mark shown on key or shift screen center 1 3 Same as 1 3 on main panel 4 5 Same as and on main pane Displays net shooting mark C Saves picture to memory card Selects display range Not used rs Replays a stored picture i i i RANGE Automatically tillts sounding beam in 2j steps within sector selected by WIDTH key Adjust receiver sensivity Trains the transducer automatically within a Um Varies the tilt angle of the selected sector sounding beam between 0 and 90 ets direction of the sounding TRAN TILT sam center between 1658 port dm 1658 starboard Not used Figure 1 5 Remote control box OPERATIONAL OVERVIEW Turning the Power On Off Turning the power on Press the ON key on the
6. 4 1 Normal Display Mode w text 4 2 North ru ERE 4 4 Noise Limiter 3 6 Overvoltage Warning eene 10 1 Port Starboard Display 7 18 Pulselensth eret 3 3 R Range Ring iiis enne 4 5 Rejecting Sonar Interference 3 4 Remote Control 1 8 Saving the 8 2 Sea Surface Reflection 9 3 Seabed 9 1 Self Test 135 NIU 11 1 Ship s Track Mark eee 4 6 SICELOD G2 eode 9 4 Sub Panels dte tete 1 4 Su b Panel 1 5 Suppressing Seabed Tail 3 3 SYSTEM Menu n 13 1 Target Lock oan tente 13 2 Target Lock Mark ee 4 7 TIED Angle itti reet ee ette 2 3 TE tB 2 3 Trackball Mark 4 4 Transducer Warning eeeeeeee 10 1 Ix Gycle 3 ete eee 3 5 I ME eiecti cto peteret eccle Patti Fett cet Docs PEL 3 1 U set Menu Rt 5 1 IN 1 IN 2
7. ms i i s m sd me s Choose size of target track window not shown Target LK Window Normal Large Largest 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 is cancelled Fish Track Window Set distance at which to track fish school s 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 is not show on the display NORMAL 32x32 LARGE 64 x 64 LARGEST 128x128 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 lon
8. Own Ship Mark L Net Shoot Mark Estimate Mark m Current Vector Range Rings Ship s Track MK ES 1 Color Curve L TES NET REC ES 2 Color Curve H Picture Advance m Advance at Shoot Continued on next page A 4 Net Rec Picture Setting range 0 to 3 Setting range 0 to 3 Setting range 1 to 10 25log 30log 35log 40log 15log 20log 25log 30log 1 3R 1 6R TGT Mark Fish Auto Setting range 1 to 15 kt Setting range 1 to 10 Setting range 1 to 10 m 15 30 40 60 Sec Normal Large Largest 32 Cmps 360 True 32 Cmps 360 True 180 Rel 360 Rel OFF Sonar TGT Lock 1234 S L E 9E L Ss Pi Qvo 9 0 AN S A SAW C SJ 32 x 32 64 x 64 Normal 1 4 R Long 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 HIST DISPLAY H Slice Width 1234 SYSTEM MENU PRT STBD Sample Setting range 0 180 Tilt ON OFF Range ON OFF Event Mark ON OFF Continued from previous page INTERLOCK Fish Mark ON OFF Net Shoot Mark ON OFF Target Lock ON OFF DEFAULTS Defaults Execute A 5 This page is intentionally left blank SPECIFICATIONS Model CSH 73 150 Freq 150 kHz 180
9. 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 Table 7 1 Automatic scan range at menu setting WIDE of OTHER sub menu in the INIT SET TEST menu Range m Width 1 Width 2 Width 3 75 100 every 6 transmissions 150 200 every 4 transmissions 300 400 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 89258 510 2109212 2312 214 514 512 212 10 5109 8 8 6 6 4 54 2 2 54 54 506 56 58 8 Tilt Angle Setting Figure 7 1 Tilt angle setting Table 7 2 Automatic scan range at menu setting NARROW of OTHER sub menu in the INIT SET TEST menu 75 100 150 200 300 400 500 600 800 1000 more than 1200 Note Period every transmission Tilt angle changes in 2 steps for aster
10. ete eo ce elon te 7 12 F False ECHO etre ede eco 9 4 Fish Adag eei er ee 7 9 Fish Mark 4 5 Fish Movement cccccccsesseceeececsesessaeeeeees 4 5 Fish SCHOOL jt 2 er eee enis 9 2 Fish School Center sess 7 1 Fish School Speed 7 9 Fish Tracking nee 7 3 FAM amiet teet tte onte retten 3 6 Function Key c D ease 6 1 GAIN ia A e ee Ee eaae 2 4 H Heading Data 4 4 Headmg Matk tees 4 5 History Display eene 4 3 HOR inen ee Deren EE 3 7 Horizontal slice display 7 18 INIT SET TEST Menu 13 7 Interference Rejector IR 3 5 Interference 5 esti eget S 9 4 M Mam Panel ere hi 1 2 Marks and Data seen 4 Mark data on off eese 7 20 Memory Card 5 eerte des 8 1 Memory Card Initialization 8 1 Men Tree 0 22 tet eh tote iet caet 1 Nay Data eem ettet 4 6 Net BehaVviOQr 4 e e treni tet 7 17 Net Location Mark sse 7 15 Net Sonde Data eee 4 6 Net Sonde Mark sse 8 4 Net Sonde 7 16 ee eoe A aen av on ge e a gave e 9 4 Normal Display Mode
11. If the bearing width is set to 90 degrees for example the CSH 73 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 7 P E irection A Port starboard sampling angle can be set between 0 and 180 degrees Setting sequence SYSTEM menu HIST DISPLAY PRT STBD Sample B Fixed at 6 degrees Figure 7 17 Port starboard display 7 18 Horizontal slice display 120 degrees of the picture in the horizontal direction is 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 Bearing Mark Echo inside this area is shown in window Horizontal Slice Width 120 Fixed Range Mark Cross Cursor Er D Own Ship Mark QUUD l 1 Jo ft Color Bar Latest Picture Own Ship Stern Mark SS Range from own ship to cross cursor in stern direction Range from own ship to cross cursor in port starboard direction w Slant range from own ship to cross cursor D Depth to cross cursor Figure 7 18 Horizontal slice display 1 In the normal display place the trackball mark on the echo you want to see displayed in the horizontal displ
12. by other ship Wake produced by other ship Wake produced by own ship when ship is turned Figure 9 4 Wake appearance on the display 9 3 False Echo by Sidelobe 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 is fairly weak but when the water is comparatively shallow and the bottom is rocky and hard strong signals are detected by the sidelobe These are represented on the display as a false echo as shown below Seabed Main lobe False Echo Sea Surface Reflections Figure 9 5 Sidelobe echoes Noise and Interference 9 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 A Interference from B Electrical C Marine life noise other sonar interference Figure 9 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 alarm sounds and
13. 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 10 2AGC data setting window SIGNAL SIGNAL PROCESS While it is ideal to suppress seabed echoes with the AGC con trol alone there are some fishing grounds where this is 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 is 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 3 3 Suppressing Seabed and Sea Surface Reflections in Shallow Waters WRONG METHOD CORRECT METHOD Data setting window TVG TX OUTPUT In shallow fishing grounds with hard or rocky bottom seabed reflections often interfere with wanted fi
14. target lock external KP sync heading up fish alarm overvoltage warning unretracted transducer warning remote control External sensor required 3 HULL UNIT XDCR Travel 600 mm 800 mm 800 mm 1200 mm Raising Time 16 sec for 800 mm travel 25 sec for 1200 mm travel Lowering Time 15 sec for 800 mm travel 24 sec for 1200 mm travel Driving System Remote electric control Allowable ship s speed 18 knobs 15 knobs during raise lower operation 4 POWER CONSUMPTION 100VAC 50 60Hz 16 1 on average 3 max 110 220VAC operation available with stepdown transformer PT 400 5 EMBIRONMENTAL CONDITION 1 Temperature 0 C to 50 C 2 Relative Humidity 85 or less 6 COATING COLOR 1 Display Unit N3 0 Newton No 5 for front panel Munsell 2 5GY 5 1 5 for cabinet 2 Transceiver Unit and Hull Unit Munsell 2 5G 7 2 Newton No 5 SP 3 This page is intentionally left blank AGC a ih 3 3 DAGC iiiter dares 3 3 c ete te tette t evene teo 7 6 AUTO TE sss reich coto 7 1 AUTO TRAN 3 7 teer 7 2 B recess 3 7 certe tees 4 7 DATA SET Menu eee 13 4 Data Setting Window esses 1 5 8 ete aet 2 2 Echo Sounder Combination Display 4 2 Eliminating Unwanted Feeble Echoes 3 1 Estimate Mark sss 4 6 Event Mark
15. 105 0350 1xx 105 0351 1xx ROM RAM DROM DPRAM DR DPRAM DU DPRAM PS P W EEPROM REACT 105 0366 1xx 105 0445 1xx ROM RAM DROM VRAM DPRAM DC CLT 105 0381 1xx ROM How nn AAAAAA OK OK OK OK OK OK OK 105 0415 1xx ROM RAM MEMCARD BATT RY Figure 11 3 Continuous test Panel test This test checks the keys of the main and sub panels 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 PANEL TEST 00000000 Figure 11 4 Panel test Color test This test checks for proper display color To escape from the test reset the power COLOR TEST Figure 11 5 Color test Gray test This test checks for screen distortion To escape from the test reset the power Figure 11 6 Gray test SIO test This test checks for proper communication between the display unit and transceiver unit and requires a jumper plug To escape from the test reset the power SIO TEST DRAW SIO NG IF SIO NG o 9 olg PIF SIO1 OK Figure 11 7 SIO test 11 4 Interface Unit CS 120A Self Test 1 Open the cover of the interface unit 2 Find DIP switch DP 1 on th
16. 5 Mark Description Ships Track Mark With gyrocompass or speed log connection own ship s track is plotted by a solid line The track length to display can be selected among 5 10 RQ 20 and 40 times the range When the length of the line exceeds selected value the oldest part of the track is erased i 3 Enos This mark can be displayed with current indicator input The tidal urrent Tidal Current Data Normal mode C1 0 C2 0 0 DOO oog C3 LI Mark Combination mode C1 C2 C3 current marks are displayed on the net shooting mark and net sondemarks C U The tidal current marks show tidal current speed in three layers 1 3 selected on the current indicator The tidal current speed is shown by the length of the current mark Note however that no tidal current mark appears if 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 normal mode with text speed direction and depth of the current are shown for three layers C1 C2 C3 In the echo sounder and history modes only the speed appears C1 C2 C3 on the echo sounder or history display Net Sonde Data When the net sonde is connected the depth of the net sonde trans
17. 7 10 Event marks Entering an event mark 1 Setthe 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 234 Horizontal range 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 Stored when EVENT key is Y pressed You observe picture from direction of JL mark N 7 77 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 7 14 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 o
18. Freq 180 kHz 1 GENERAL 1 Range TX Cycle Pulselength TX Cycle Pulselength sec msec Range m OF ff center OFF Off center ON 0 09 0 32 0 14 0 39 0 21 0 53 0 28 0 64 0 41 0 85 0 54 1 06 0 68 1 28 0 81 1 49 1 08 1 92 1 34 2 34 1 61 2 77 2 14 3 62 2 68 4 48 NOTE 1 Transmission cycle is 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 selectable Method By built 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 reduction switch Low noise superheterodyne continuously scanning beam forming TVG AGC signal processing interference rejecter 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 180 horizontal x 6 to 11 Vertical 5 to 10 horizontal x 6 to 11 Vertical 0 horizontal to 90 vertical continuous NOTE Beamwidth depends on transmitter frequency PPI display on 15 inch non glare high resolution color CRT 16 colors sonar pi
19. MARK DSP 2 CURRENT VEC Range Bearing Heading Mark Range Rings m Bearing Scale Auto Scan Width Auto Train Width It Ship s Track l Net Movement Plot Fish MK Connect I Fish Tracking MK Fish Track Plot r 0 w Current k A w Current A wCurrent SAVING REPLAYING 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 Saving to 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 Internal memory Initializing Memory Cards Before you save information to a memory card it must be initial ized formatted L 2 5 4 Press the MENU key to display the USER menu Select the CARD UTILITY menu Select Initialize It takes more than two minutes to initialize a memory card Press the END key a few times to display the user menu The memory card stores 256k bytes of data This is 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 se
20. OFF Audio H Slice ON OFF ON OFF ON OFF ON OFF From To Whole Est MK QK Save 1 DATA SET Menu DATA SET MENU A 2 COLOR CURVE Sonar 1 CHANGE COLOR NET SHOOT PLAN Sonar 2 Echo Sounder 1 Sonar 1 Echo Sounder 2 Sonar 2 Echo Sounder Marks Menu SONDE Net Diameter Tilt Interlock NET PLOT CORR Net Sonde XMTR Net Length Wire Length Net Width Layer 1 Layer 2 Layer 3 Execute Execute Execute Execute Execute Execute Execute Execute Execute Setting range 200 1000 m ON OFF Execute Qty plus distances Setting range 0 3000 m Setting range 0 1000 m Setting range 0 200 m Setting range 0 100 INIT SET TEST Menu INIT SET TEST MENU HEADING ADJ L 34 Heading Adjust BAUD RATE EXT KP H UNIT LANGUAGE OTHERS I F CS 120 Aux Port 1 Aux Port 2 Aux Port 3 NMEA T KP Out Polarity EXT KP Polarity WH Depth H Dist for Shoot L Water Temp t Language SELF TEST Single Continuous __ Panel m Color Gray SIO ECHO TEST Display Test Demonstration ES NET REC ES Audio S
21. 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 8 4 You can delete unnecessary data from a memory card 3 Press the MENU key to display the USER menu Select the CARD UTILITY and press 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 INTERPRETING THE DISPLAY Seabed Echoes When the tilt angle is set at 90 degrees with the sector center faced dead ahead the pictures illustrated below will appear on the screen The seabed echo is represented on the screen as a thick line which realistically shows the bottom contour When the tilt angle is decreased the seabed trace becomes wider and weaker By observing the seabed condition on the screen you may prevent the net from being damaged by a reef or a shipweck Ridge Seabed EC Q This distance shows the depth of the water Sea surface reflections Seabed Sea surface reflections Tilt 90 Seabed Sea surface flection Tilt 60 reflections Figure 9 1 Seabed echoes 9 1 Fish Schools A fish school appears as a mass of echoes on the screen The color of the mass shows the density of
22. electronic scan ning sonar which detects and instantaneously displays fish schools and underwater condi tions in 16 colors on a 15 non glare high resolution CRT screen The main features of the CSH 73 are Vivid 16 color display provides intuitive recognition of seabed and concentration distri bution and volume of fish schools Markers and indications keep the operator abreast of fishing conditions Remote control box provides for armchair control of major functions New gain range or tilt setting appears in large characters whenever corresponding con trol is adjusted Function keys automatically setup the equipment to perform specific task High power MOS FET transmitter ensures reliable operation under any condition System Configuration STANDARD OPTION REMOTE CONTROL BOX REMOTE DISPLAY SUB DISPLAY CSH 116 CSH 106 CSH 736 50 60 Hz EN TEM ECHO SOUNDER COLOR VIDEO SOUNDER FNZ JOINT BOX SONDE CS 170 DISPLAY UNIT CSH 731 NN s 5 5 5 MEER EIUS is i SHIP S MAINS SHIP S MAINS re ne IUE E XN 100 VAC 16 100 VAC 16 r i 50 60 Hz 50 60 Hz i lala EE TRANSCEIVER UNIT NC lt gt CSH 710 INTERFACE UNIT e ete ee C9 200 Q STEP DOWN eoe TRANSFORMER 110 115 220 230 VAC PT 400 10
23. 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 Selecting a Display Mode 2 2 The CSH 73 provides three display modes normal sonar pic ture echo sounder E S combination and history display com bination Those modes may be selected with the NORM E S and HIST keys Table 2 1 Display mode description Mode Description sonar picture appears over the entire screen Li O 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 pu 1 6 times the range on EXT KP TM DSP in the SYSTEM menu Navigation information can be 4 displayed in the text window at L 2 screen bottom by turning on NORMAL DATA DISPLAY in the user Text window menu NS Lb E S HISTORY 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 di
24. 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 Trackball Mark E 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 Mark Data Description Latest Event These marks depict important locations With speed log and gyro Mark compass connection these marks follow ship s movement In the true eB Q3 motion mode they are stationary Ten marks one latest and nine event marks can be displayed When more than ten marks are entered the Event Mark oldest is erased to make room for the latest b 2 Latest Event Mark The position data of the latest event mark that is horizontal range 2 Data current depth J and bearing 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 WE from the screen To erase an event mark place the trackball mark on the event mark and press EVENT key Continued on next page 4 4 Mark Data Description Latest Fish Mark Fish Speed Mark gt Fish Mark These marks ar
25. 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 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 P ag USER MENU D HIST DSP GRPH HIST Window DSP Fish Histogram Ss Select item with amp keys and press MENU key Press END key to close menu AUDIO PRT STBD H Slice ON OFF 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 Normal Mode Menu ES Mode Figure 5 3 Menu screen location and display mode USER Menu Description Table 5 1 User menu description Lists contents of memory card CARD Saves control and menu settings to memory card UTILITY Deletes data from memory card Formats memory card CARD ECHO Save Saves ec
26. sound at 100 m or farther 30log is the normal setting 25log Suitable for searching small bottom fish in shallow water or near coastline TM DSP TM Display Range Selects a display range in the ture motion display from 1 3R or 1 6R Note To enable KP synchoronization open sub panel 2 choose TVGeTX and TRANSMIT and then set CYCLE to 0 TARGET LOCK Tracking Method This option determines what item to track in target lock target lock mark or fish echo or Auto Fish Speed Limit Sets limit speed kt for tracking of fish When speed of fish exceeds limit set here target lock is cancelled Tracking Factor Determines which fish to track by relative echo strength when multiple fish schools appear in the tracking window 10 is the normal setting Fish Track Window Selects range 1 to 10 m out of tracking window When fish tracks out of this window the equipment judges the target is moving and traces its track 13 1 Menu Item Description 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 Target LK Window Selects size of target lock window in pixels 32 x 32 normal 64 x 64 medium or 128 x 128 large BRG READOUT Course Selects unit of readout for course and bearing between fish marks 32 compass bearing or 360 true bearing Cu
27. 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 A D c Vus ream c 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 lt keys and press MENU key Press END key to close menu Setting Fish 4 Auto Choose weakest echo to track Set fish speed which cancels target lock Set distance at which to trace fish school track Choose update interval for fish speed readout Tracking Method TGT Mark Track Echo Color 8 Setting range 1 to 10 Fish Speed Limit 5kt Setting range 1 to 15 Fish Track Window 10m Setting range 2 to 20 Fish Spd Update 15 30 sec 45 60 sec
28. the fishes and the size of the mass how they are distributed In the following figures the same fish school is observed with two different tilt angles From the left figure the operator can know the horizontal distribution of the fish school and from the right figure the vertical distribution Width Horizontal distribution Thickness Vertical distribution Ju Depth a Distance Tilt 20 Tilt 90 Sector Center 0 Sector Center 300 Range 400m Range 400m Surface Fish School Seabed Sea surface reflections Tilt 5 Bottom Fish School Sea surface Tilt 40 reflections Figure 9 2 Fish schools 9 2 Sea Surface Reflections As ultrasonic pulses at both edges of the 180 sector beam are always emitted horizontally along the sea surface regardless of the tilt angle setting sea surface reflections appear as a thick line extending across the own ship mark When the sonar is used with a narrow tilt angle the sea surface reflections cover an extended area as illustrated below Sea surface Reflections Figure 9 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 4 Wake produced
29. to close the menu Replaying a Function Key Press function key F1 F3 desired Function Key Fine Tuning 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 is 1 to 4 and the lamp above the key lights when the setting is 1 5 6 2 Fine Function Key Fine Tuning Adjustment fis 4 2 1 0 1 2 4 5 TVG Near 3 2 bw pouce ES 4 TVG Mid 3 2 1 0 0 0 1 1 2 3 TVG Far 3 2 1 0 0 0 0 1 1 2 Tx Cycle 0 0 0 0 0 0 0 0 0 0 Tx Beamwidth 3 2 1 0 0 0 0 0 0 0 Tx Power 2 1 0 0 0 0 0 0 0 0 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 Save Execute Delete Execute Initialize Execute 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 and then save
30. 50 60 Hz E E E SPEED LOG AD CONVERTER NAVIGATOR M CURRENT INDICATOR COLOR VIDEO SOUNDER 1 1 5 NTERFACE UNIT E VI 1100A Bi 3 E S INTERFACE UNIT SHIP S MAINS E 100 110 220 VAC 10 P i HULL UNIT CSH 71080 800 mm stroke CSH 71120 1200 mm stroke POWER SUPPLY UNI CSH 720 vi CONTROL DESCRIPTION Control Layout on Display Unit and Remote Control Box CJCXCEJCEO C SUB PANEL 1 som Es s vens G MAIN PANEL v wow Sax VOX wow WE COURS Lock DIM CONT BRILL AUDIO 7 Eventa de Q PUSH OPEN O SUB PANEL 2 1 ESTIMATE NET COURSE CO FISH o NS REMOTE CONTROL BOX Ee Pein C ET Figure 1 1 Display unit and remote control box IM Main Panel EJ EJ Eye pesi J EJ a RANGE GAIN mE TRAIN s E ES COURSE LOCK DIM CONT BRILL AUDIO EVENTI EVENT2 MATE1 J MA
31. AVE PICTURE Save Method 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 5 4 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 Selectthe FUNCTION KEY menu and press the MENU key USER MENU FUNCTION KEY Press MENU key to register customized settings to FUNCTION keys F1 to F3 Press END key to close menu Register Execute Figure 6 1 FUNCTION KEY menu 4 Press the MENU key again USER MENU FUNCTION KEY REGISTER Customized settings are registered to FUNCTION keys Select key number with and press MENU key Press END key to return to sub menu In Figure 6 2 REGISTER menu 5 Press the up or down arrow key in the sub panel 1 to select the function key to program then press the MENU key 6 Press the END key several times
32. E 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 is not tracked Fish tracking Tracks fish school s 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 is greater than 60 degrees the lamp above the TARGET LOCK key flashes to call your attention Note 2 Target lock position and data are calculated according to tilt angle Note 3 The bearing mark moves to the target lock mark loca tion when
33. LR UUJLRS COD OPERATOR S MANUAL COLOR SCANNING SONAR MODEL CSH 73 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 Printed in Japan FIRST EDITION OCT 1997 APR 05 2002 m DAMI CSH 73 00080806200 OME13080CO00 A SAFETY INSTRUCTIONS A WARNING Do not open the equipment Hazardous voltage which can cause electrical shock burn or serious injury exists inside the equipment Only qualified personnel should work inside the equipment Do not disassemble or modify the equipment Fire electrical shock or serious injury can result Turn off the power immediately if water leaks into the equipment or the equip ment is emitting smoke or fire Continued use of the equipment can cause fire or electrical shock 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 Do not operate the equipment with wet hands Electrical shock can result Keep heater away from equipment Heat can alter equipment shape and melt the power cord which can cause fire or electrical shock A CAUTION Use the proper fuse Use of a wrong fuse can result in fire or permanent equipment damage Do not use the equipm
34. TE2 OFF FISH JL cent 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 1 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 F1 F3 Sets up display according to user program provide fine tuning 1 2 NORM E S HIST Select display mode NORM normal sonar picture E S Echosounder Mode keys combination HIST Historical display Lamp above a key lights to show current selection RECALL MEMO RECALL Replays saved picture MEMO Saves picture to memory card or internal memory RANGE Selects a picture display range Range selected appears on the display Adjusts receiver sensitivity TRAIN Rotates the transducer The center of the sounding beam can be oriented in any direction between 165 port and 165 starboard AUTO TRAIN Press AUTO TRAIN to train the transducer automatically within WIDTH 30 60 90 or X120 sector as selected with the WIDTH key The lamp above the switch lights during the automatic training operation TILT Changes the tilt angle of the sounding beam between O and 90 AUTO TILT Automatically tilts th
35. ad Figure 2 1 Tilt angle 2 3 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 ans Gain low Gain proper Gain high Figure 2 2 Gain settings and resulting pictures Measuring Range and Bearing to a Target 2 4 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 3 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 is indicated as follows BL IL LP on the port side B C S on the starboard side FINE TUNING THE PICTURE This chapter provides the information necessary for tuning the sonar picture All operations are performed on sub panel 2 data setting window Sub Panel 2 Figure 3 1 Display unit Eliminating Unwanted Feeble Echoes Echoes from targets such as seabed and fish return to the trans ducer in
36. anges 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 Lamp lights during transmission 1 4 Sub Panel 2 data setting window This example shows settings T 7 of TVG and TX TVG TX selected CURRENT SETTINGS for item selected TVG TX SIGNAL ES TVG TX DELETE MK NEAR MEDIUM FAR CYCLE PL OUTPUT SONR BEAM a 718191171819 ALM AUDIO Li m MaD GGG E coord ME NB t C LX ltem 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 Main Setting ir Normal s IT um niis NEAR Adjusts receiver gain within 100 m TVG MEDIUM FAR Adjusts receiver gain between 100 m and 400 m Adjusts receiver gain beyond 400 m LE o e fos TVG TX Sets Tx cycle 9 is normal CYCLE setting fastest 0 synchro nizes with external KP aa 5 je Sets Tx pulselength 9 is normal EN setting OUTPUT Sets Tx output power 9 is E maximum power Continued on next pa
37. ay then press the R B key The horizontal slice marker 120 eypeeo in width and cen tered 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 7 19 Turning Marks Data On Off 7 20 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 Sub Panel 2 Select DELETE MK to delete the following marks Event Mark 1 Event Mark 2 a Fish Mark Own Ship Mark A Ship s Track Z Each press of or deletes mark selected one by one 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 thru the USER menu User Menu Display Item DATA DISPLAY Event Mark 1 Event Mark 2 Fish Mark On Track Data Text Window ES Window MARK DSP 1
38. c for keying KP Out Polarity pulse fed from external sonar or echo sounder to synchronize transmission UNIT Depth Chooses unit of depth readout LANGUAGE 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 Choose language used in menu English Japanese or Korean SELF TEST Single Performs display unit self test once Screen distortion check by displaying gray test Continuous Performs display unit self test continuously Panel Checks the keys of the display unit and remote control box for proper operation Color Checks for proper display of colors Gray Checks for screen distortion SIO Conducts communication test between the display unit and transceiver unit Requires a test plug Continued on next page 13 7 Menu Item Description 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 S 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 Net Rec Range Sets sounding range of net recorder transmitter unit DEFAULTS Defaults Restores default se
39. cale ES Draft Adjust ES 2 Select Net Rec Range DEFAULTS T Defaults Program Recall EVENT KEY O 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 Mile Meter Feet C F 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 A 3 SYSTEM Menu SYSTEMMENU SIGNAL PROCESS Smooth Echo Rng k Smooth Echo Cir Delete Color FAR TVG CSH 53 71 73 81 83 Far TVG Curve CSH 53 71 73 81 83 TM DSP TM Display Range I 4 TARGET LOCK Tracking Method Fish Speed Limit Tracking Factor m Fish Track Window 1 Fish Spd Update Target LK Window BRG READOUT L Course Current Data Event Mark DATA DISPLAY Other Marks TT Control Setting Text Window Data MARK SIZE 1 I 34 Trackball Mark Target Lock Mark Event Mark Event Mark D Fish Mark Own Ship Pos t MARK SIZE 2 I
40. cture 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 Horizontal slice combination 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 luck mark 5 Alphanumeric Data SP 2 Sonar picture range tilt angle gain Trackball mark 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 appears in larger characters for 5 seconds when changed Current data current speed direction layer depth Navigation data ship s speed heading water depth water tempera ture Own ship s position latitude longitude Net sonde data net depth distance to seabed water temperature sinking speed of net 6 Features Custom mode interference rejector afterglow noise limiter delete color memory card save and recall of picture echo inside estimate mark and net shooting data automatic tilt automatic target tracking
41. de w text Time from net shooting mark ON Distance run from net shooting mark ON Control Setting Net Sonde Mark Net Shooting Mark Own Ship s Position Data Latitude Longitude Sonde Data Navigational Data Ship s Speed Ship s Course Water Depth Water Temperature 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 Bona 0000 oon 0000 Net Sonde Mark Net Shooting Mark 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 3 Marks and data appearing in the echo sounder conbination display mode History display Current Data Current Speed Color Bar Requires external sensor Figure 4 4 Marks and data appearing in the history display mode Permanently Displayed Marks and Data Range Scale Requires external sensor Mark Data Description Trackball Data Trackball da
42. disturb the picture decrease appropriate TVG option by one or two steps by pressing minus key Locate fish school on a long 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 pro duces 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 25 log setting is useful for searching fish schools near shore lines or shallow waters 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 sion pulse emitted into the water While a longer pulse is advan tageous for long range sounding
43. e a EES 7 20 SAVING REPLAYING PICTURE Memory E E 8 1 Saving the Picture canadien 8 2 Transferring Echo Data from Internal Memory to Memory Card sss 8 2 saying Ner shootmneg Data HM dte UO Eni on RE UM AEN ERES ROLL dada 8 3 Replaving Saved Data 8 4 Memory Card C OMCs as Orc d e 8 4 INTERPRETING THE DISPLAY Seabed Echoes eM aucem Ng 9 Fish Schlo0 18 2 tte elite eet ehe stes t eet ete 9 2 Sea Surtace Reflectiolnis vz x ni eo De etes deett vete as tete ceeds 9 3 MENSEM EDD 9 3 False Echo DY Side lobe Reb Rue ee ree eia 9 4 Noise and Interference 9 4 WARNINGS Wali 3 05 0 cansacisietuccasuuta cono Pu cdd pauta ler sore 10 1 Unretracted Transducer Warning 2 55 00 1 ea setenta 10 1 SELF TESTS Opernue the Self n d winds esesiut on ceca deca d dus uci 11 1 Self Test DESCEIDUDH E Ufo a IL 11 2 Interface Unit C 5 120 Self Test 11 5 MAINTENANCE Display Unit Malntenall6Eu aou rot rrr
44. e 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 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 is 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 is 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 Net Sonde Net Shoot Mark k Mar Figure 7 16 Net behavior 7 17 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
45. e inscribed on the screen by pressing the FISH key Ten fish marks can be displayed Each time the key is pressed the fish marks change 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 Qo C 0000 S ILLI Fish movement from the fish speed mark lt gt to the latest fish marker lt gt is shown by distance course C and speed S at the lower right corner of the screen Bearing and Range Marks These marks are used for monitoring echoes through the loudspeaker and also for displaying horizontal slice picture If the target lock Bearing function is on the bearing marks follow the movement of the target o lock mark Range marker Range and Bearing This data appears when the bearing and range marks are displayed Mark Data RUUL Heading Mark The heading mark is drawn with a dotted line Heading mark data i appears at the top of the screen The range rings are inscribed at intervals of 1 4 of the range in use Range Rings 30677 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 Electronic Bearing Scale s The electronic bearing scale is available with gyrocompass connection It rotates with own ship s movement Continued on next page 4
46. e 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 Turn 6 on Digital display gt LL LN Joo 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 I1 22 JUC C To lc 3 H 5 5 LB co xb WR L L L Lb l Figure 11 8 Interface unit CS 120A cover opened 11 5 This page is intentionally left blank MAINTENANCE A DANGER Do not work inside the equipment unless totally familiar with electrical circuits Hazardous voltage which will cause death or serious injury exists inside the equipment 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 12 1 Display unit maintenance Keep magnets and cassette tapes away from the display unit Magnets or magnetic material can can distort the picture 12 1 Hull Unit Maintenance Apply MOLYTONE grease 2 every six months 7 0 Rai
47. e sounding beam up and down in 2 steps within WIDTH the tilt angle selected by the WIDTH key The lamp above the key lights when automatic tilt is on NET COURSE Marks location of net TARGET LOCK Tracks a fish school EVENT Inscribe event mark on the display to find horizontal range depth and bearing to a target Note that the EVENT key can function the same as the SHOOT key of the remote control box This can be done on OTHER sub menu in the INIT SET menu ESTIMATE 1 2 Compares volume of two fish schools FISH Measures fish school speed OFF CENT Relocates selected target DIM Adjusts the backlighting of the control panels and the brightness of the lamps above keys BRILL Adjusts screen brilliance AUDIO Adjusts volume of built in loudspeaker which monitors a target appearing along the bearing marker TRACKBALL Follows on screen movement of trackball mark to enter marks and off center the screen 1 3 Sub Panel 1 MEMORY CARD DRIVE CARD EJECT BUTTON RECALL Figure 1 3 Sub panel 1 Sub panel 1 control description MENU Opens closes the menu END When the menu is displayed it terminates menu operation and returns control to the sonar picture When in a sub menu it returns to previous sub menu HELP Provides operating information for current menu tie Select items on menus CARD REPLAY Replays card stored control and menu settings COLOR Ch
48. e 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 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 R1 Length of net between transmitters 1 and 2 in meters R2 Length of net between transmitters 2 and 3 in meters R2 Figure 7 14 How to measure distances between transmitters How to set net sonde transmitter distances 1 Press the MENU key while pressing and holding down The DATA SET menu appears 7 Qty Distance 0 1 2 9 10 3 Om Om Om Om Om DATA SET MENU SONDE NET SONDE XMTR Select item with amp keys and press MENU key Press END key to close menu 4 Setting range 0 to 10 gt 4 Setting range to 9990m gt Figure 7 15 DATA SET menu 2 Select NET SONDE and then Net Sonde XMTR 3 Enter number of net sonde transmitters and their distances between them 7 16 Observing Net Behavior With net sonde connection you can observe net behavior after the throwing of the net on the echo sounder combination mod
49. e transmitters and their distances between each other Net Length Sets net length The setting range is 500 to 3000 meters in 100 meter steps Wire Length Sets wire length between own ship and net The setting range is 100 to 1000 meters in 100 meter steps Net Width Sets net width The setting range is 0 to 100 meters NET PLOT CORR Layer 1 The movement of the net during net shooting Layer 2 is plotted by using water current speed and Layer 3 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 13 6 INIT SET TEST Menu Description The DATA SET menu can be display by turning on the power while pressing MENU key The HELP key provides menu operating information Menu Item Description 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 15 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 P C Port EXT KP Ext KP Polarity Chooses positive or negative logi
50. ent for other than its intended purpose Personal injury can result if the equipment is used as a chair or stepping stool for example Do not place objects on the top of the equipment The equipment can overheat or personal injury can result if the object falls Do not exceed speed noted in the speci fications when operating the equipment or 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 TABLE OF CONTENTS FOREWORD Word to CSH 73 Owners V Beat fes 2 3 reet eve edle va E System a 1 CONTROL DESCRIPTION Control Layout on Display Unit and Remote Control Box esee 1 1 Pane eH I P T 1 2 5 Rane M ga ceases RR a ear tena tis 1 4 sully Panel 2 daba setting WINdOW 1 5 Remote UN NIMM MM EM MEME E M M EE 1 8 OPERATIONAL OVERVIEW Turning the Power ORC
51. es to ec ad 6 1 Replaying a Puncta testi tcu 6 2 Euuction Iccv Fine PUI a a aS 6 2 Saving Function Key Settings to a Memory 6 3 Replaying Function Key Settings from a Memory Card sees 6 3 ADVANCED LEVEL OPERATION Finding Fish School Center iacente utat md D cA dou rubea 7 1 Tracking a Fish School target IOCK c 7 2 Detecting Fish Schools Aurally 7 7 Alar 7 6 Relocating Fish School for Easy Observation sess 7 9 Comparing of Fish School Concentration sess 7 10 Measuring Fist SCHOOWS Peed tus be ieee eee 7 11 The Byent MSIE zones as dede otis 7 12 Trae Moton DIS Lay ee eG aa ede ee eee lobes 7 14 Plotting Net Location Mark ta eer wun eet nee arenes 7 15 Setting Distances Between Net Sonde Transmitters 7 16 Observing Net Behavior cass tate inant ita Arteria e cite 7 17 Port Starboard Horizontal Slice Displays essen 7 18 Turning Marks Data On Off abeo retis Poe e Fate UEM eoe Da dotar ep
52. evel versus presentation color Echo Sounder 1 curve which you selected at either CURVE Echo Sounder 2 at SIGNAL PROCESS on data setting window or system menu Note that Sonar 2 is not used l First select item to change on COLOR CURVE sub menu and then press the MENU key Display Level color setting 15 255 gt 13 193 G 11 104 r 8 B ates r v4 OF X MU X 0 Level 0 128 255 2 Color curve can be changed at colors no 4 8 11 13 and 15 Press up or down arrow keys to set cursor on color no you want to change curve 3 Press the right or left arrow keys to change value 4 Press the MENU key to terminate color curve setting Then the display shown below appears Follow the instructions on the screen Color curve setting is completed To save change and close the menu press MENU key To cancel change and close the menu press END key Continued on next page 13 4 Menu Item Description CHANGE COLOR Sonar 1 You can customize the color of these items Sonar 2 according to user request etc Note that Sonar Echo Sounder Marks Menu 2 is not used For display color change on Sonar 1 you can change color according to selection by COLOR key 1 First select item to change on CHANGE COLOR sub menu and then press the MENU key Before Display Before R G B Color G
53. f 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 is comprised of the following Echoes inside estimate mark the ones which are displayed the first time the SHOOT key is pressed Ship s position date time Ship s track net movement current direction water depth and or water temperature Net sonde mark 8 3 Replaying Saved Data Whole picture or echo inside estimate mark 1 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
54. g point of the alarm zone 4 Press the key 5 Rotate trackball clockwise to select the end point The dis play paints a fan shaped alarm zone 6 Press the key Starting oint P 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 More than 3 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 Y C gt N Fish Press the school OFF CENT key Own ship mark Place trackball mark here J J for example Own ship mark moves to trackball mark position Figure 7 7 How to relocate fish schools 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 figu
55. ge 1 5 displayed near seabed Suppresses seabed echoes If AGC alone cannot suppress seabed echoes use 2AGC Eliminates interference by other ORE sonars or echo sounders Selects echo level versus presen tation color curve The higher the setting the easier it is to see weak echoes on the screen e Each pressing erases oldest mark DELETE among event mark event MARK mark A fish mark own ship mark DELETE MK Each pressing deletes 1 5 of DELETE overall length of ship s track If MARK target lock function in on sixth pressing deletes the fish school track and cancels target lock mode Main im y O Mem Setting D ti Item Main Range escription Rejects random noise and inter ference by other echo sounders or sonars 2AGC and HOR functions cannot be used together If one is used the other is Rejects unwanted echoes SIGNAL Adjusts echo afterglow which is useful for watching echo move ment The higher the setting the longer the afterglow remains automatically set to 0 Automatically reduces receiver gain against strong echoes such as seabed Adjust so fish echo is Sets depth range of echo RANGE sounder picture Sets range of DN RNG net recorder downward ESI Net Recorder Sets display start depth of echo NK ia sounder picture Sets range of ES net recorder upward sounding Rejects blue dots caused by dirty water on entire screen ES1 Eliminates echoes displayed in E
56. ger 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 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 in
57. ho 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 DATA DISPLAY Fish Mark displayed on the ES combination display while On Track Data shooting the net Text Window ES Window Range Bearing Turns those marks on off Note that turning off Heading Mark Range Bearing mark also turns off the data display MARK Dsp Range Rings Bearing Scale Auto Scan Width Auto Train Width Ship s Track Turns those marks on off Net Movement Plot MARE Dos Fish MK Connect Fish Tracking MK Fish Track Plot HIST Window Chooses type of display for HIST window Dsp AUDIO Displays echoes within audio sector H Slice Displays echoes along upper half of HIST DISP GRPH 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 Menu Menu Item Description CURRENT VEC A w Current Vec A w Current Vec 7 w Current Current Flow Dir Turns those marks on off Current Flow Dir displays tidal current direction as To or From S
58. ish 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 the 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 7 11 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 O 4 Fish key pressed twice QD gt lt gt Fish key pressed three times gt lt L Fish key pressed four times X De 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 1 and event mark 2 10 of each type of mark can be displayed The unit marks the latest one by CS for event mark 1 and by for event mark 2 Older event marks are displayed by a cross 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 D L 4 4 QUA X Latest Figure
59. isk marked widths 1 step for all other widths 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 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 is cancelled 3 Tocanceltarget 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 More than 5 Mark thickness shows tracking status Figure 7 3 Target lock mark appearance Erasing target lock mark Target lock marks may be erased as follows 1 Open the sub panel 2 2 Select DELETE MK 3 Press the key for DELET
60. main panel The lamp above the key should light If it doesn t press the TX switch on sub panel 1 Turning the power off Retract the transducer with the key and then press the OFF key on the main panel Note The transducer is automatically retracted into the tank even if the OFF key is pressed before retracting the transducer How ever 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 full or amp mid key The lamp above the key blinks during lowering of the transducer and lights when the transducer is completely lowered In normal use fully lower the transducer The transducer extends 1200 mm below the ship s hull providing 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 mid key This raises the transducer by 400 mm trans ducer extends 800 mm from ship s hull Hull unit with 800 mm full and 450 mm mid protrusion is also available A 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
61. n di EGLOR E colors specified Continued on next page Normal Setting Main Item Setting TE Normal Description Item Main Sub Range Setting SONAR 12 Choose 1 for single sonar or 1 2 for dual sonar Shifts Tx frequency Choose 1 sonar SHIFT re for normal use SONR BEAM UP TM H up Heading up presentaion Hup Sets horizontal beamwidth of Rx HOR 0 10 beam The higher the number 0 BEAM the narrower the beam VER Not used 0 ON OFF ON OFF Tums on off scanning tilt angle OFF 2 steps ae 2 14 4 14 Chooses automatic tilt width 429 4129 WIDTH 6 16 See page 7 1 for details SE AUTO 20 26 ON OFF ON OFF Turns on off scanning EBL OFF which scans audio sector AUTO SCAN 4109 20 Chooses automatic scanning WIDTH width among 10 20 40 10 40 60 60 ON OFF ON OFF Turns fish alarm on off 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 is or cH the ALM AUDIO key trackball and key Chooses audio sector among 9 30 60 90 180 330 ii Chooses length of reverberation AUDIO REVERB 0 9 for audio Larger number gives 0 longer reverberation Press or Sets direction of audio sector CENTERIS key using the trackball and key
62. n 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 Open 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 is 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 is de picted by dotted ring with a diameter equivalent to that of your purse seine net being centered on the trackball mark C B ES Trackball fa mark Net location mark 2 Figure 7 13 Net location mark 3 Toadjust 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 abov
63. n to the o o0 mark time elapsed and distance run in meters appear from the 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 uU qp when a net sonde is connected In the echo sounder combination 10 pts max E S Picture Advance Range Data 1 8 0 0 mode they also appear in the echo sounder picture showing depth of the net sonde transmitters with bars extending from the marks Picture advance on the echo sounder combination mode automatically changes to ship s speed dependent advance rate from the moment the SHOOT key is pressed provided there is speed log input The 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
64. order of distance to them and when we compare their intensities at the transducer face those from nearer targets are generally 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 73 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 in the figure on the next page The higher the TVG setting the greater the amplification of echoes 3 1 3 2 Figure 3 2 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 2 3 Open sub panel 2 Select TVG TX Set TVG NEAR MEDIUM and FAR to 5 default setting There setting are useful for almost cases When sea surface reflections or plankton layers
65. r NL can reduce the effects of these unwanted reflections raising the setting causes them to become bluish to background color Normally a setting of 3 or 4 is 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 3 7 This page is intentionally left blank MARKS AND DATA Marks Data and Display Mode Normal display mode Heading Data Trackball Mark Data Slant Range Horizontal Range Depth True Bearing Range Data Tilt Angle Data Instantaneous tilt angle in automatic tilt or target lock Train Angle Electronic Bearing Scale Bearing Mark Range Mark Fish Speed Mark Latest Fish Mark Trackball Mark Heading Mark North Mark Latest Event Mark Older Event Mark Estimat t Own Ship s Mark stimate Data Ship s Track Water Depth or Water Temperature Range Ring Data Range Ring Event Mark Data Horizontal Range Present Depth Event Mark Depth True Bearing Fish Movement Data Distance Moved Course 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 Normal display mo
66. re 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 marks press their respective keys Estimate Estimate Doo mark 1 mark 2 ooo 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 f
67. rrent 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 DATA DISPLAY Control Setting Keep OFF for normal operation Sonar and TGT Lock options are for factory use only 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 Fish 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 13 2 Menu Item Description ES NET REC ES 1 Color Curve Selects echo level versus presenta
68. s has effect on the picture adjust one of the following Interference rejector data setting window 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 3 5 3 6 Figure 3 5 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 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 limite
69. se transducer and coat main shaft with DAPHAECOROAEX 2 every six months A CAUTION The zinc block near the transducer must be replaced yearly 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 HULL UNIT marine life off the transducer The junction between the transducer and main shaft may corrode which can result in loss of the transducer or water leakage inside the ship Figure 12 2 Hull unit maintenance 12 2 SPECIAL MENU DESCRIPTION SYSTEM Menu Description The SYSTEM menu can be displayed by pressing MENU and lt together For help press the HELP key Menu Item Description SIGNAL PROCESS Smooth Echo Rng Selects echo smoothing level in range direction The higher the number the higher the smoothing effect The setting range is from 0 to 3 Smooth Echo Cir Selects echo smoothing level in circular direction The higher the number the higher the smoothing effect The setting range is O to 3 Delete Color 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 FAR TVG Far TVG Curve Selects suitable FAR TVG curve to compensate for propagation loss of
70. sh 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 Fish echo a Seabed echo TVG and AGC ee adjusted with urtace echo OUTPUT kept high Fish echo OUTPUT decreased with GAIN kept constant Figure 3 3 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 Interference from Cruising propeller Cruising noise other sonar noise of own ship from other boat Figure 3 4 Forms of interference Identifying noise source To eliminate noise effectively you should first identify the noise source as follows 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 step
71. splay on the lower 3 8 Two types of history displays are available Audio and Port Starboard 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 Fh aee R400 Tilt Watch the tilt angle indication at the top right T 157 angle corner on the screen The tilt angle can be set in one degree steps from 0 to 90 degrees Finding a proper tilt angle is important when searching for fish The beam of the half circle scanning sonar is fan shaped as in A below and it swings up and down according to the setting of the TILT lever If you look at the angle between the horizontal plane sea surface and several points on the beam it can be seen that the angle is maximum in the center of the beam q and becomes smaller as it goes toward the edge finally becoming zero degrees at the edge of the beam This will be more clearly understood if you look at a vertically directed beam See B below You should keep in mind that the tilt angle displayed on the screen is the angle the center of the beam forms with the horizontal plane P
72. t ete db tb ted dta ent UD anaes 12 1 H ll Unit Maintenant sett ete E atta etc la ro datus weenie ete Matos a Ee gue 12 2 SPECIAL MENU DESCRIPTION SYSTEM Ment Description rape i dri Cara 13 1 DATA SET Menu Deserptlot a 13 4 INIL SET LESTI Meru Description ise sive ooa du Rope ope et a Pod tortue tse Eod 13 7 MENU TREE ente doen oto nete mene 1 SPECIFICATIONS bt estet SP 1 INDEX ae epee an IN 1 FOREWORD A Word to CSH 73 Owners Congratulations on your choice of the FURUNO CSH 73 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 Hlectric 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 FURUNO CSH 73 Color Scanning Sonar is a half circle multibeam
73. ta Slant range Horizontal range Depth B B Bearing Bearing is shown in 360 or X180 indication system relative to ship s heading In the latter case B is indicated as follows B P on the port side B S on the starboard side Range Data Shows the range scale set with the RANGE control R Tilt Angle Data The tilt angle appears below the range The tilt angle can be changed T in 1 steps within the range of 0 to 90 In target lock and automatic 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 Train Angle Data The train angle data shows the direction of sonar beam center set with RO the TRAIN lever Continued on next page Mark Data Description Own Ship s Mark A 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 North Mark or Heading Mark A When the CSH 73 is connected to a gyrocompass the mark is called the north mark and points North If there is no gyrocompass input it is the heading mark and points in the direction of own ship s heading Heading Data This data requires
74. 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 an alarm sounds and the message XDCR NOT RETRACTED appears at the screen center If this occurs do the following The power cannot be turned off because the transducer not be retracted Turn off the main breaker for the display and power supply units to stop operation Confirm that the net is not tangled in the transducer Confirm that the breaker inside the raise lower control box mounted on the hull unit is 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 to retract the transducer into the tank If it 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 10 1 Hand Crank Breaker li F Photo No 1580 Power Supply Unit Hull Unit Figure 10 1 How to manually raise the transducer 10 2 SELF TESTS The CSH 73 has various self tests to check it for proper opera tion If a test reveals equipment malfunction do not attempt to check inside the eq
75. tion 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 Select net recorder picture display mode up down or down sounding HIST DISPLAY PRT STBD Sample 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 73 If Fish Mark you interlock the range for example anytime Net Shoot Mark the range is changed on the CSH 73 it is Target Lock 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 13 3 DATA SET Menu Description The DATA SET menu can be display by pressing MENU and e together For help press the HELP key Menu Item Description COLOR CURVE Sonar 1 For each of these devices you may change Sonar 2 settings of echo l
76. ttings Saving the Picture 4 9i Press the MENU key to display the USER menu Select SAVE PICTURE 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 Press the END key to close the user menu 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 8 2 Press the MENU key to display the USER menu Press arrow keys to select CARD ECHO DAT The display shows all inside estimate mark pictures stored in the internal memory Using the arrow keys select picture to save to memory card Press the MENU key The lamp to the right of the memory card drive lights while picture data is being saved 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 is 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 o
77. ttings Program Recalls Reserved for future use OTHERS EVENT KEY EVENT The EVENT key functions to inscribe ev rt mark SHOOT The EVENT key functions as the SHOOT kein the remote control box to display net shooting mark Data Format Input data format can be selected among CIF NMEA0183 Ver 1 5 and NMEA Ver 2 0 Auto Tilt Auto tilt range can be selected wide or narrow 13 8 MENU TREE Execute Execute Execute Execute Execute Execute Execute USER Menu USER MENU CARD UTILITY Delete Initialize CARD ECHO DAT Save CARD NET DATA LH Save FUNCTION KEY Register DATA DISPLAY Event Mark 1 Event Mark 2 Fish Mark On Track Data Text Window ES Window MARK DSP 1 Range Bearing Heading Mark Range Rings Bearing Scale Auto Scan Width Auto Train Width MARK DSP 2 Ship s Track Net Movement Plot Fish MK Connect Fish Tracking MK Fish Track Plot HIST DSP GRPH Hist Window Dsp Fish Histogram L CURRENT VEC Cw Current Vec A w Current QU w Current Current Flow Dir SAVE PICTURE Save Method ON ON ON OFF OFF OFF Depth Temp OFF ON OFF Current Sonde ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON
78. uipment There are no user serviceable parts inside the equipment A DANGER Do not work inside the equipment unless totally familiar with electrical circuits Hazardous voltage which will cause death or serious injury exists inside the equipment Opening the Self Test Menu 1 Turn on the power while pressing and holding down the MENU key The INIT SET TEST menu appears 2 Press arrow keys to select SELF TEST followed by the MENU key INIT SET MENU SELF TEST E Select item with f keys and press MENU key Single Execute Continuous Execute Panel Execute Color Execute Gray Execute SIO Execute As P Figure 11 1 SELF TEST menu 3 Press up or down arrow key to select test desired 4 Press the MENU key to start test 5 Turn off the power to terminate the test Self Test Description Single test The ROM RAM and other devices of the dis play unit are checked once Control is returned to the SELF TEST menu when the test is com pleted Continuous test The devices of the display unit are checked con tinuously 11 2 START UP TEST 105 0350 1xx 105 0351 1xx ROM OK 105 0366 1xx 105 0445 1xx ROM OK RAM OK 105 0381 1xx ROM K RAM OK 105 0382 1xx ROM OK RAM OK 105 0353 1xx ROM OK RAM OK 105 0352 1xx ROM OK OK 105 0415 1xx ROM OK RAM OK BATTERY OK 105 0343 002 Figure 11 2 Single test CONTI TEST

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