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Furuno CH-270 User's Manual

1. 4 7 horizontal mode sse 2 12 vertical scan mode 3 11 Range echo sounder mode 4 3 echo sounder mode preset 5 15 horizontal mode eene 2 3 horizontal mode preset 5 13 track range preset 5 16 vertical scan mode 3 6 vertical scan mode preset 5 14 RANGE control echo sounder mode 4 3 horizontal mode cce 2 3 vertical scan mode 3 6 Remote controller ss 1 2 Resolution color echo sounder mode 4 11 horizontal mode eiiie 2 23 vertical scan mode 3 15 S SECTOR control l orzortal MOT recese 2 4 vertical scan mode 3 7 EE 2 17 Speed alarm message 5 12 ele UK 5 11 oweep Imdicator oaiieaiie dei ieys ied deui ieai aedi teda 5 12 Sro MON E 5 8 System Configuration vii SYSTEM SETTING 1 menu 5 9 IN 2 SYSTEM SETTING 2 menu 5 11 T Target data Re e EE 5 10 TARGET Key oct dis 2 19 2 20 2 21 Target lock choosing mode 2 19 echo mode eraren a 2 21 position mode 2 20 reverse mode 2 19 Test pattern cccecccccssseeeccesseeeceesseeeseese
2. M M 5 8 5 4 1 Displaying the SYSTEM menu 5 8 5 4 2 SYSTEM SETTING 1 menu descrpton 5 9 5 4 3 SYSTEM SETTING 2 menu descrpton ccc cec cece eee eeeeeeeeeeeeeeeeeeeeeeeeees 5 11 5 4 4 Sonar horizontal mode range settings eee cecceecceeeeeeceeeeeeceeeseeeeeeaeeees 5 13 0 4 5 Vertical scan mode range settings ccc cec cece eee eeceeeeeeseeseeceeeeeeeeeeeeaeeaeeeaes 5 14 0 4 6 Echo sounder mode range seine 5 15 OA MACK FANGS sellis cussteuatioeiedttud imn eain anie aotem ee 0 16 9 49 eege EE 5 17 94 9J V Language EE 5 18 DA TO SYSTEM DaCKUD eege EE Ee 5 18 94 TT EOadilid DACKUD e EE 5 18 5 4 12 Transducer frequency acdustment 5 19 5 4 13 Demonstration MOG iis uicer noter ite muda eucanseadscanducadacauadesaesdbentacontacers 0 19 5 4 14 Restoring all default settings esee 0 20 6 MAINTENANCE TROUBLESHOOTING eeeeeee eene nennen nnne nnn nnn nnns 6 1 SEN WE Ge E e E El e 6 1 6 2 Cleaning the EQUIPMENT EE 6 1 6 3 Full UhIE Ee ANCE EE 6 2 eorom NM EUede isiM E UU 6 2 6 3 2 Manually raising lowering Iranscducer eee eeaeeseeseeeeeseeeaees 6 2 6 4 Transducer Maintenance 6 3 6 5 FUSCIREDIACS EE 6 3 6 0 ree ine Rie NT E LOU 6 4 6 5 Emor EE dex accelerant ess ee alim iade ium 6 5 RUE Tele Lee 6 6 O9 TeSt Et mE 6 8 MENU IRE E eeepc REC T M 1 jg ele Leiwt Le EE SP 1 INDE A Crew ere
3. 5 8 o MENU OPERATION 5 4 2 SYSTEM SETTING 1 menu description Display the SYSTEM menu and then press A or V to choose SYSTEM SETTING Press to open the SYSTEM SETTING menu E s Press A to MENU Press 4 to choose 1 POSITION TRACK CURRENT DATA SYSTEM SETTING 1 2 SHIP S L U SHIP S LOP CURSOR L L SEE HEADING INDICATION NORTH MARK CSE DATA NAV DATA TVG CORRECTION UNIT TEMP TARGET L L CUSTOM KEY EMPHASIS MODE ETA MARK OFF ON FLOW FROM FLOW TO AZ ON GYRO LoranC LoranA DR DECCA OTHERS 1 2 1 1 ft fa HIRO P B or PRESET KEY SHORT CUT KEY OFF NORMAL RED OFF 10sec 30sec 1min 3min 6min A W sELECT 4 b CHANGE MENU END System setting 1 menu SYSTEM SETTING 1 menu description POSITION Chooses how to display position data The choices are latitude and longitude LOP Decca or Loran whichever navigator is connected or cursor latitude and longitude The connected navigator must be capable of displaying L L or LOP Position data required TRACK Turns the track display on or off on the horizontal display The track is always shown on the video plotter display regardless of this setting CURRENT DATA Turns current data tide on or off FLOW FROM shows from what direction the current is flowing FLOW TO shows the direction the current is heading Requires connection a current indicator FLOW FROM Current Vector FLOW TO Current vector
4. 5 9 5 MENU OPERATION HEADING INDICATION Chooses heading indication format true figures or azimuth compass points for example N S etc for the echo sounder and vertical scan modes Requires heading data NORTH MARK Turns the north marker on or off Requires heading data CSE DATA Chooses heading data source navigator or gyrocompass with which to draw ship s track For heading sensor or gyrocompass choose GYRO NAV DATA Chooses source of position data GPS Loran C Loran A DR Dead Reckoning Decca or Others for equipment not shown receives talker only TVG CORRECTION Changes TVG curve to compensate for attenuation absorption of ultrasonic wave in water OFF standard TVG curve 1 2 1 2 of the theoretical absorption value added to TVG curve and 1 1 full theoretical absorption value added to TVG curve UNIT Chooses unit of depth measurement meters feet fathoms passi braza or Hiro TEMP Chooses unit of water temperature measurement C or F TARGET L L Turn on to output event marker position to a video plotter Requires heading and latitude and longitude data from external equipment CUSTOM KEY Chooses function of custom mode keys preset or short cut For further details see paragraph 5 3 EMPHASIS MODE Chooses method of picture interpolation processing OFF Interpolation close to raw signal NORMAL Clarifies picture RED Emphasizes strong signals ETA MARK A vector line extends
5. OPERATOR S MANUAL COLOR LCD SEARCHLIGHT SONAR woe CH 270 FURUNO ELECTRIC CO LTD www furuno co jp Elemental Chlorine Free The paper used in this nanual is elenental chl ori ne free FURUNO ELECTRIC CO LTD FURUNO Aut hori zed D stri but or Deal er 9 52 Ashi hara cho N shi nonh ya 662 8580 J APAN Tel ephone 481 0 798 65 2111 Fax 81 0 798 65 4200 A JUN 2003 C JUN 08 2010 X Al rights reserved Printed i n J apan Pub No COM 13220 D DM G4 270 MALA 00014699513 IMPORTANT NOTICES e his manual is intended for use by native speakers of English e No part of this manual may be copied or reproduced without written permission e fthis manual is lost or worn contact your dealer about replacement e The contents of this manual and equipment specifications are subject to change without notice e The example screens or illustrations shown in this manual may not match the screens you see on your display The screen you see depends on your system configuration and equipment settings e Store this manual in a convenient place for future reference e FURUNO will assume no responsibility for the damage caused by improper use or modification of the equipment including software by an unauthorized agent or a third party e When it is time to discard this product it must be done according to local regulations for disposal of industrial waste For disp
6. O 2 3 4 5 6 e 7 8 9 10 11 AJIN OIIO J IOI Oj Ol o O1 O O DEFAULT SETTING NO YES A W SELECT dk CHANGE MENU END Range ver mode menu 2 Press A or V to choose range number desired 3 Press 4 or gt to set range 4 Press the MENU key to register settings and close the menu To restore default vertical scan mode range settings choose DEFAULT SETTING press to choose YES and then press the MENU key 5 14 o MENU OPERATION 9 4 6 Echo sounder mode range settings As with the horizontal and vertical scan modes the user may preset the echo sounder mode s ranges 1 Choose RANGE E S MODE at the SYS menu and then press P RANGE E S MODE MEE 10 600m esch AJIN O O O NO O O O 2 3 4 5 6 7 100 8 9 10 11 BO MTD O O O71 O O 1 O CO O C1 O O DEFAULT SETTING NO YES A W SELECT dk CHANGE MENU END Range E S mode menu 2 Press A or V to choose range number desired 3 Press 4 or gt to set range 4 Press the MENU key to register settings and close the menu To restore default echo sounder mode range settings choose DEFAULT SETTING press to choose YES and then press the MENU key 9 15 5 MENU OPERATION 5 4 7 Track range settings You may choose the video plotter display scale range as follows 1 Choose RANGE TRACK at the SYS menu and then press gt RANGE TRACK MODE
7. Press A to choose MENU at the top of the screen Press lt or gt to choose the VERT menu Press A or V to choose CLUTTER Press to open the dialog box Press lt or gt to choose 0 1 2 or 3 as appropriate The higher the number setting the weaker the echoes which are erased Press the MENU key to register your selection and close the menu 3 15 3 VERTICAL SCAN MODE 3 11 6 Choosing horizontal range expansion factor You may choose the horizontal range expansion factor for the vertical scan picture from x1 or x2 Note that this feature cannot be adjusted when the vertical search mode activated by a function key is turned on Press the MENU key to open the menu Press A to choose MENU at the top of the screen Press lt or gt to choose the VERT menu Press A or V to choose HORZ RANGE Press to open the dialog box Press lt or gt to choose x1 or x2 as appropriate uO or scm Press the MENU key to register your selection and close the menu 3 16 3 VERTICAL SCAN MODE 3 12 Interpreting the Vertical Scan Display This section provides information necessary for interpreting the vertical scan display 3 12 1 Sample echo displays Port starboard picture You can see fish echoes at the center right of the screen The bottom is displayed wider as the distance from the ship s position increases Therefore it may be difficult to discriminate bottom fish Own ship Fish
8. TROUBLESHOOTING Interpreting the test results display MAIN PROGRAM NO PANEL PROGRAM NO The program numbers of the MAIN and PANEL programs appear at the top of the display ROM RAM VRAM NMEA Checked for proper operation and the results displayed as OK or NG No Good For NG contact a FURUNO agent or dealer for advice TX FREQUENCY Shows frequency of the transducer ROLL and PITCH These values change with ship s pitching and rolling range 30 to 30 TRAIN TILT Train tilt test conducted maximum 1999 times with the number of errors shown below NG COUNT Shows the number of times the test has been consecutively executed At the bottom of the screen there are two major groups of zeroes 0 and they represent the keys and controls on the control unit and remote controller Press a key and its on screen location shows 1 while the key is pressed and 0 when it is released Operate a control and its on screen location changes as below When the GAIN control is operated the panel dimmer increases or decreases with adjustment of the control GAIN control Shows 0 127 Other controls Shows 0 19 6 7 6 MAINTENANCE TROUBLESHOOTING 6 9 Test Pattern A test pattern can be displayed to check for proper display of colors Press the MENU key to open the menu Press A to choose MENU and then press to choose SYS Press V to choose GO TO SYS MENU Press to choose YES Choose TEST PATTER
9. The figure below shows the typical horizontal mode operating sequence 7 Set center bearing of train 8 Set tilt angle sector 6 a Set scanning sector 5 Set range 1 Turn on the power 11 Adjust menu settings 9 Adjust gain ex TVG as required 4 Select appropriate 10 Measure range and 2 Lower the i transducer horizontal mode bearing to target with cursor 6 b Select training sector for 3 Adjust screen full circle brilliance Control unit 2 1 2 HORIZONTAL MODE 2 2 Typical Horizontal Mode Display Tilt angle indicator Indicates transducer tilt angle Horizontal max range 30 Range and bearing markers Vertical max 25 depth Demonstration Sector marker Tilt angle Tilt angle See note below mode Interference Cursor data Train indicator Range rejector Transducer status indicator Filled arrow Respective action completed Blinking arrow Action in ottom progress echo d Bearing ER Target lock indicator marker 34 12 343 N ee pg Fish echo 134 34 213 W Position in latitude ETA marker CSE 357 guo Own ship SPD 9 9kt Course speed marker DEP 35m Depth Range TMP 12 3 C water temperature melee CUR 20 Tide direction Event tide speed marker GAIN Gain setting Cursor TVG LEVEL 4 0 DISTANCE 200 m s 8 level COLOR IStance settings LIES Color bar Requires appropriate Event Ship s Range and bearing sensor marker track Surreal marke
10. WHITE MARKER KEY2 Same choices as KEY1 Default setting VOLUME KEYS Same choices as KEY1 Default setting DEL TRACK PRESET menu CUSTOM MODE HORIZONTAL EXPANSION SECTOR 240 TRAIN 0 DelSH Seng RANGE m 160 TILT 30 SPEED FAST CUSTOM2 MODE HORIZONTAL SECTOR 360 TRAIN 0 RANGE m 160 TILT 30 SPEED FAST CUSTOM3 MODE VERTICAL SECTOR 180 TRAIN 90 RANGE m 120 TILT 90 SPEED FAST CONTINUED ON NEXT PAGE MENU TREE CONTINUED FROM PREVIOUS PAGE SYSTEM menu SYSTEM SETTING SYSTEM SETTING 1 POSITION SHIP S L L SHIP S LOP CURSOR L L TRACK OFF ON CURRENT DATA OFF FLOW FROM FLOW TO HEADING INDICATION TRUE AZ NORTH MARK OFF ON CSE DATA NAV GYRO NAV DATA GPS LoranC LoranA DR DECCA OTHERS TVG CORRECTION OFF 1 2 1 1 UNIT m ft fa HIRO P B TEMP C F TARGET L L OFF ON CUSTOM KEY PRESET KEY SHORT CUT KEY EMPHASIS MODE OFF NORMAL RED ETA MARK OFF 10sec 30sec 1min 3min 6min SYSTEM SETTING 2 STABILIZER OFF ON AUTO RETRACTION OFF 5 15kt SPEED ALARM MESSAGE OFF 15kt 20kt SWEEP INDICATOR DOT LINE DEFAULT SETTING NO YES RANGE SONAR MODE all default ranges min range m 10 ft 40 fa P B Hiro 10 max range m 800 ft 2500 fa 500 P B Hiro 600 RANGE VER MODE all default ranges m 10 20 30 40 60 80 100 120 160 200 250 300 400 500 600 ft 30 6
11. echoes displayed on the screen To overcome this inconvenience use the TVG function It compensates for propagation loss of sound in water amplification of echoes on short range is suppressed and gradually increased as range increases so that similar targets are displayed in similar intensities irrespective of the ranges to them The TVG also functions to suppress unwanted echoes and noise which appear in a certain range area on the screen To adjust TVG 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press lt or gt to choose the VERT menu COM1 COM2 HORZ Mu ES PRESET SYS TVG LEVEL TVG DISTANCE GAIN ADJUST RES COLOR CLUTTER HORZ RANGE A V SELECT 4 P CHANGE MENU END VERT menu 3 Press A or V to choose TVG DISTANCE and then press gt to show the following dialog box TVG DISTANCE GAIN Hi 3 12 3 VERTICAL SCAN MODE 4 Press lt or gt to adjust TVG distance considering sea conditions The larger the figure the greater the distance at which the TVG works TVG Distance 05 10 15 20 25 30 35 40 45 5 0 10 0 Setting Mets 3 e 20 40 60 100 130 10 200 260 320 4000 Feet 10 30 70 130 210 330 410 520 60 820 1040 Lea rPassibraza 2 s 10 20 40 60 80 100 120 180 180 Ion res n s 10 a 20 60 so wo wo 140 170 Je 5 Press A or V to close the dialog box and return to the VERT menu 6 To suppress reflections from the
12. Choose the speed at which the speed alarm message Is displayed and the aural alarm released when the speed goes higher than that set here The audio alarm can be silenced with the R B key 9 pressed to lower transducer Message 1 appears Reduce speed below 15 kts to opeed above 15 kts d PP d p id restore normal operation Transducer being lowered opeed over 15 kts Message 1 appears and lowering continues Transducer lowered Message 2 appears accompanied by the audio alarm Reduce the speed below 20 kts or 15 kts to restore normal operation opeed above 20 kts or 15 knots depending on this menu setting t pressed to raise transducer Message 1 appears accompanied by the audio alarm The transducer is not raised Reduce the speed below 15 kts to erase the message and restore normal operation Then press 4 again to raise the transducer Transducer being raised M 1 isi i R h Speed above 15 kts essage 1 appears and raising continues Reduce the speed below 15 kts to erase the message SHIPS SPEED EXCEEDS 15 kt TRANSDUCER REMAINS LOWERED SLOW DOWN UNDER 15 kt WHEN MOVING TRANSDUCER UNIT REDUCE SHIP S SPEED AND PRESS TKEY TO RETRACT IT opeed above 15 kts PRESS R B KEY TO SILENCE ALARM PRESS R B KEY TO SILENCE ALARM Message 1 Message 2 SWEEP INDICATOR Shows train position in the horizontal mode and tilt angle in the vertical scan mode with a line or a dot See the illustration on page 2 2 an
13. MODE 3 2 2 How the vertical scan picture is painted The sounding beam is emitted and the information target echoes obtained by the reflected echo appears in the corresponding sector as it appears on the horizontal mode The difference is that the training is performed only in vertical direction It forms a sounding area of a half circle like a slice of watermelon to observe a vertical section of underwater conditions Note The tilt mechanism has a 90 range of movement To paint the full 180 area therefore the transducer is first trained through the left half 90 180 of the area followed by the right half 0 90 Approximately two seconds are required to rotate the transducer in the opposite direction before it begins training through the right or left half Sounding Beam Screen Display 1 Bearing of the Se sounding beam 1 Bearing of the sounding beam 0 ee Sector center 90 a Display range 24 _ ilting direction d LM 2 Sector center 3 Display area 2 Sector center 3 Display area Select the bearing of the sounding beam 1 by TRAIN control the sounding sector center 2 by the TILT con trol and the display area 3 by the SECTOR control How the vertical scan mode picture is painted 3 3 3 VERTICAL SCAN MODE 3 2 3 Horizontal vertical scan display Press the 98 key to display the horizontal vertical scan display Tilt angle Cursor position data V
14. Meters 10 20 30 40 60 80 100 120 160 200 250 300 400 500 Feet 30 60 90 120 150 200 250 300 400 500 600 800 1000 1500 2000_ Note 1 Unit of range measurement may be chosen from among meters feet fathoms passi braza and Hiro Japanese For further details see UNIT in paragraph 5 4 2 Note 2 Ranges may be freely preset as desired For further details see paragraph 5 4 6 4 ECHO SOUNDER MODE 4 4 Train Direction The sounding beam may be directed 360 in any direction Operate the TRAIN control to choose sounding beam direction Each setting on the control is an increment of 6 The train indicator at the top of the screen shows training direction 0 fore direction 90 starboard direction 180 aft direction and 270 port direction 0 860 6 gt 12 gt 18 gt 354 Train 0 Train 90 Train 180 Train 270 0 8 D Train indicator and display 4 5 Choosing Tilt Angle The transducer can be pointed directly toward the bottom or forward of the ship Operate the TILT control to choose an appropriate tilt angle The available tilt angle is 0 horizontal direction to 90 vertical in increments of 1 Chosen tilt angle appears at the top of the display to the right of T 4 6 Choosing Picture Advance Speed The picture advance speed determines how quickly the vertical scan lines run across the screen from right to left When c
15. ON pe Target lock indicator f Transducer status Own ship EFT Sc VEN indicator meet EET ft WES EE Position in latitude Train A EE E 134 34 219 W and longitude position ME EO CSE 357 SPD 9 9 kt Course speed Sonar range marker Track Radius changes with video plotter range Event marker Entered from Event marker Cursor horizontal mode cale Requires appropriate Event marker data sensor Track L Horizontal Display J Video Plotter Display main window sub window Horizontal Video Plotter display The horizontal display appears in the main window the video plotter display which mainly traces ship s track in the sub window Compared to the horizontal display the video plotter s range is much longer For example an event marker entered on the horizontal display disappears from that display when it goes out of the current range However it remains on the video plotter display for a much longer time when a long range scale is used This can be useful when you want to return to the location marked with an event marker To show track on the horizontal display the tilt angle must be less than 75 degrees You may switch control between the horizontal display and the video plotter display with the MAIN SUB key The message MAIN WINDOW CONTROLLABLE or SUB WINDOW CONTROLLABLE appears with each pressing of the key A red rectangle circumscribes the su
16. TVG as required 9 Adjust gain GI G CUSTOM MODE 2 Lower the transducer 4 Select appropriate 10 Measure range and vertical scan mode bearing to target with cursor 7 b Select training sector 180 3 Adjust screen brilliance Control unit 3 1 3 VERTICAL SCAN MODE 3 2 Displaying Vertical Scan Mode Display 3 2 1 Typical vertical scan mode display Press the key to show the vertical scan mode display Bearing indicator Shows training direction FORE STARBOARD Training indicator Trained at 190 Vertical range Horizontal range Interference Transducer status indicator rejector ON Filled arrow Respective action completed Blinking arrow Action in progress Heading Cursor Horizontal range scale position data 34 12 343 N Position in latitude Fish echo 134 34 243 W and longitude CSE 357 Cursor SPD 9 9 kt Course speed Horizontal DEB range Depth 35m Bottom SS 24 echo TMP 4 12 3 C Water temperature Depth rec EE CUR 11 0 Tide direction a 2 0 kt tide speed my GAIN 5 3 Gain setting TVG LEVEL 4 0 TVG level Range dE SS ER distance settings marker 100 af gt Color bar Requires appropriate Sector center Vertical range scale sensor indicator Event marker Horizontal range marker Sweep indicator Shows tilt angle in vertical scan mode Typical vertical scan mode display 3 VERTICAL SCAN
17. a mass of echoes on the screen The color of the mass shows the density of fish schools on the sonar beam To find distribution and center point of a fish school try several different tilt angles A Sea surface fish Tilt angle O to 10 Bottom echo not displayed because of decreased tilt angle Sea surface reflections are present Fish school Sea surface reflections B Midwater bottom fish Tilt angle 30 or more Fish echo which appears before bottom can be detected Bottom Fish school Large midwater fish school is Tilt angle 0 to 20 present Fish echo which appears together with or after bottom can be detected Bottom When the tilt angle is shallow the reflection echo from bottom is weak and the fish echo which appears from bottom is easy to find Fish schools 2 2 2 HORIZONTAL MODE Sea surface reflections To reduce sea surface reflections set the tilt angle to 5 or lower so the upper edge of the sonar beam does not hit the sea surface or adjust TVG When a decreased tilt angle is used sea surface reflections cover a large area as illustrated below Tilt angle indication Sea surface reflections Sea surface reflections Wake A wake produced by own ship or another ship can be a strong reflecting object when a decreased tilt angle is used As the wake appears as a thick continuous line it can be easily distinguished from a fish school A wake con
18. active 5 19 5 MENU OPERATION 5 4 14 Restoring all default settings All default menu settings may be restored Choose YES and then press the MENU key to restore all default settings Note that the settings stored in SYSTEM BACKUP are not disturbed DEFAULT ARE YOU SURE NOTE RESET ALL THE SETTINGS INCLUDED IN SYSTEM MENU TO DEFAULT CHANGE MENU END Note All default settings will be restored If necessary jot down settings which must be restored Default menu 5 20 6 MAINTENANCE TROUBLESHOOTING This chapter provides the information necessary for keeping the equipment in good working order A WARNING Do not open the equipment Hazardous voltage which can cause electrical shock exists inside the equipment Only qualified personnel should work inside the equipment 6 1 Preventive Maintenance Check the following points monthly e Check all cables If damaged replace e Check connectors at rear of each unit Clean if necessary e Check earth of each unit Clean if necessary e Check voltage of ship s mains to be sure it is within the equipment s power rating 6 2 Cleaning the Equipment Dust or dirt can be removed from the exterior of equipment with a soft dry cloth Do not use chemical based cleaners to clean the equipment they can remove paint and markings Cleaning the LCD Wipe the LCD carefully to prevent scratching using tissue paper and an LCD cleaner To r
19. capacity for event markers is reached the eldest event marker is erased from the screen to make room for the latest Note 1 With position data input the event marker moves with ship s movement The event marker can be inscribed without position data however it will be stationary Note 2 The event marker cannot be inscribed from the sub window strata history and video plotter displays It can only be inscribed from the main window Note 3 The latitude and longitude position of the event marker can be output to a video plotter and that position inscribed on the plotter s screen with the external waypoint mark X Each press of the EVENT key outputs event marker position For further details see TARGET L L in paragraph 5 4 2 Note 4 The tilt angle must be less than 75 degrees to use this feature 2 9 1 Inscribing the event marker 1 Operate the Omnipad to place the cursor on the location desired for an event marker 2 Press the EVENT key to inscribe the event marker Event marker data appears at the bottom left hand corner Latest event marker Display area Previous event marker To delete all event markers Event marker data place the cursor outside the gt Horizontal range display area and press the SESCH EVENT key How to use the event marker 2 11 2 HORIZONTAL MODE 2 9 2 Deleting all event markers All event markers can be erased from the screen as follows 1 Operate the Omnipad to pl
20. cp ae a etc C hc 3 15 3 11 6 Choosing horizontal range expansion Tochor 3 16 3 12 Interpreting the Vertical Scan Display 3 17 9 12 E ln la ele Bal Ee 3 17 ECHO SOUNDER d 81 REN 4 1 4 1 Operational e TEE 4 1 4 2 bypical Echo Sounder UE KEE 4 2 4 3 Choosing MMe TRANG C EE 4 3 44 Train DIC cie 4 4 A D CMOOSIAG TILANG EE 4 4 4 6 Choosing Picture Advance Gpeed nennen nenne nnns nnn nnns 4 4 4 7 Measuring Range Dy GUEISOF ee et diem tem Ree 4 5 4 0 Event Ia E 4 5 4 8 1 Inscribing the event marker 4 6 4 8 2 Deleting all event TharKerS uoce nex ne eee enu E Ds Rae onu ind duae ees dee 4 6 ON e eg tients ticeedbateentet E a A 4 7 4 10 Adjusting the e 4 8 4 10 1 Displaying weak echoes eat 4 8 4 10 2 Finding echo strength A scope dspl yv 4 10 e e RE ln Be E d LE 4 11 TABLE OF CONTENTS A OAR SOIUEION e UE 4 11 41 0 5 SUDDFessIng elltlG EEN 4 12 5 MENU OPERATION enee Eeer te 5 1 ST COM MGM eenegen 5 1 5 121 Displaying the C OM Del EE 5 1 9 12 COM imenudescrpDIOL EE 5 1 SPEC OA IU Ee ele ee Ehe dee 5 2 5 221 Bis blayind trie TEEN ooa iesu opea edo ope cites eet Eege 5 2 95 2 2 CHRISTEN eege sen aiv du E E vede CE ER ed pd E Eo P Dd a s 5 2 5 9 Shortcut Menu Preset Merl imi ento E et 5 3 5 3 1 Choosing short cut or Dresel nnne nens 5 3 5 3 2 Changing setting of preset key 5 5 5 3 3 Changing setting of short cut key 5 6 9A VOY TE IMEMGDU
21. detection of echo Weak echo Output power set to minimum Set to maximum on the COM1 menu Excessive TVG Readjust TVG on the appropriate menu HORZ VERT ES Note that readjustment of TVG is necessary whenever the gain is adjusted Somewhat strange picture e BRILL key setting too low Increase brightness with BRILL color key Picture contains noise e Equipment not grounded properly Check equipment ground e Power cable is too close to the signal cable Relocate power cable or signal cable e Debris may be on sea surface Reject unwanted noise with the interference rejector on the COM1 menu Picture does not change e Problem in tilt mechanism or control line Contact a FURUNO when tilt angle is changed agent or dealer for advice Bottom is not displayed in vertical scan picture when bottom is flat 6 MAINTENANCE TROUBLESHOOTING 6 Error Messages The table below shows the error messages which may appear on the display All error messages are accompanied by the audio alarm which you may silence with the R B key Message Meaning Remedy Raise Lower Error RAISE LOWER FUNCTION HAS NOT BEEN Raising or lowering of transducer was not COMPLETED completed within 50 seconds Silence the MAXIMUM ALLOWABLE SPEED IS 15 audio alarm with the R B key and then KNOTS WHILE SOUNDOME IS BEING reduce speed below 15 kt RETRACTED PRESS R B KEY TO SILENCE ALARM Train Error TRAINING ERROR CPU is not receiving
22. is maximum 90 from port to 90 starboard The strata display may be adjusted with the RANGE and SECTOR controls Press the MAIN SUB key to choose the main or sub window The message MAIN WINDOW CONTROLLABLE or SUB WINDOW CONTROLLABLE appears with each pressing of the key A red rectangle circumscribes the sub window when it can be controlled 2 32 2 HORIZONTAL MODE Color bar for the strata display The depth of the bottom each in all directions is displayed in the sub window in the colors set by the color bar for the strata display The color bar for the strata display shows search angle range below 336 degrees Strongest Weakest 90 lt 18 12 6 0 6 12 18 gt 90 color color The undulation of the bottom echo in all directions Color bar for is shown by the colors on the color bar for the strata display strata display The position of the weakest echo can be changed with the RANGE control and the width of each color on the color bar for the strata display with the SECTOR control 25 and 13 steps are available respectively Use the SECTOR control to adjust width of each color ee S Weakest color le Use the RANGE control to move the location of the weakest echo color Note TILT TRAIN FULL HALF FAST SCAN R B EVENT TARGET CUSTOM MODE controls may only be operated from the main window When you attempt to operate them from the sub window the message SELECT MAIN W
23. lower the shaft by hand to confirm that it raises and lowers smoothly If it does not rise or lower smoothly do not use force the shaft may bend 4 Tighten bolts on shaft retainer Torque 20 25 Nm 9 Turn on the breaker switch 6 4 Transducer Maintenance When the ship is dry docked remove marine growth from the transducer with fine Sandpaper or a piece of wood A CAUTION Do not paint the transducer face Loss of sensitivity will result Do not use chemical based cleaners to clean the transducer They can damage the transducer 6 5 Fuse Replacement The fuses in the hull and transceiver units protect them from overcurrent equipment fault and reverse polarity of the ship s mains If the power cannot be applied the fuse in the transceiver unit may have blown Have a suitably qualified technician check the fuse CAUTION Use the proper fuse Use of a wrong fuse can cause fire or damage the equipment 6 3 6 MAINTENANCE TROUBLESHOOTING 6 6 Troubleshooting The table below provides common symptoms of equipment troubles and the means to rectify them Symptom Check Remedy Cannot turn on the power e Check ship s mains e Have a suitably qualified technician check the fuse in the transceiver unit Bottom echo becomes Rough seas Distance to the bottom changes due to rolling irregular and pitching Long range chosen Transmission period is longer so ship s pitching and rolling are apt to affect
24. school 4 E Bottom Port starboard picture When ship passes over fish schools The sounding beam is directed fore aft and the display is off centered to present a wider view of the area forward of the ship You can clearly see fish schools approaching from the bow of the ship Automatically off centered Forward Own ship Picture appearance when passing over fish schools 3 17 3 VERTICAL SCAN MODE Display of net hauling This is an example of net hauling display The location of the net is indicated clearly Net hauling and sonar picture False echo In shallow water depth less than 100 m detection unwanted echoes as shown in the figure below may appear This phenomenon is caused by the false echo from the previous transmission Reducing the Tx rate on the COM1 menu may lessen this effect False echo False echoes 3 18 4 ECHO SOUNDER MODE 4 1 Operational Overview The figure below shows the typical echo sounder mode operating sequence 8 Set tilt angle T Select display sector 5 Set range 11 Adjust menu settings turn on A scope 1 Turn on the power display etc 6 Adjust gain ZEE CUSTOM MODE EE EE DISPLAY MODE 10 Measure range to fish school with cursor 2 Lower the transducer 4 Select echo sounder mode 3 Adjust screen 9 Set picture advance speed brilliance Control unit 4 1 4 ECHO SOUNDER MODE 4 2 Typical Ec
25. the 16 color display OFF 1 15 SIG LEVEL Refer to page 2 17 COLOR Chooses 8 or 16 color display BKGD COLOR Chooses color of background text and menu Three choices are available and these are shown in the table below BKGD COLOR Background Text Men Dark blue Dark blue Medium blue o MENU OPERATION 5 3 Short cut Menu Preset Menu These menus program the CUSTOM MODE keys 1 2 and 3 The menu to use may be chosen with CUSTOM KEY on the SYSTEM SETTING 1 menu Short cut key One touch activation of the operator selected dialog box Preset key One touch setup of mode sector train range tilt and scan speed Below are the default settings for PRESET Custom mode key default settings for PRESET CUSTOM MODE key Display Mode Sector Train Range m oy eme om e o mm EXDansion Kur mma xw o m pe rm veicl scan wo o0 vo oor Fast 5 3 1 Choosing short cut or preset 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press to choose SYS COM1 COM2 HORZ VERT ES PRESET GO TO SYS MENU YES AV SELECT dk CHANGE MENU END Display for opening system menu 3 Press V to choose GO TO SYS MENU 4 Press lt to choose YES 5 3 5 MENU OPERATION SYSTEM MENU SYSTEM SETTING b RANGE SONAR MODE RANGE VERTICAL MODE RANGE E S MODE RANGE TRACK MODE COLOR PALETTE LANGUAGE SYSTEM BACKUP LOAD BACKUP DATA HEADING OFFSET DRAFT OFF
26. the transducer and displayed on the screen as sea surface reflections When the sea is calm since the sound is reflected just like a light hitting a mirror at a narrow incident angle it propagates away and the sea surface reflections become negligible However if the sea is not calm enough they will become dominant and interfere with observation of wanted echoes To minimize these sea surface reflections and to search fish schools effectively the tilt angle is usually set between 5 and 6 so the upper portion of the beam becomes almost parallel with the sea surface When the sea is rough the tilt angle is slightly increased to lessen the affect of sea surface reflections Sea surface Tilt angle 0 ge Sea surface Tilt angle 5 7 go Tilt angle 2 8 2 HORIZONTAL MODE 2 6 4 Suitable tilt angle The figure below illustrates the relationship among tilt angle depth and detection range Refer to it to find out the suitable tilt angle for a given depth detection range Tilt angle and beam coverage frequency 180 kHz vertical beamwidth 8 at 3 dB Range m 0 o Ee JE m ES UNI RT Sea ft ESI oe aa Lu SEEKS EEE es ZI I I III IIT TT meto ee PP Pe SF Peg JU Wu ggg Tilt angle and beam coverage 2 HORIZONTAL MODE 2 7 Choosing the Training Speed The training speed determines how fast the transducer scans the sounding sector Two choices are available normal speed and high spee
27. 0 90 120 150 200 250 300 400 500 600 800 1000 1500 2000 fa P B Hiro 10 20 30 40 50 60 80 100 120 140 160 200 250 300 400 RANGE E S MODE all default ranges m 10 20 30 40 60 80 100 120 160 200 250 300 400 500 600 ft 30 60 90 120 150 200 250 300 400 500 600 800 1000 1500 2000 fa P B Hiro 10 20 30 40 50 60 80 100 120 140 160 200 250 300 400 RANGE TRACK MODE all default ranges m 500 1000 2000 4000 8000 ft 1000 2000 5000 10 000 20 000 fa P B Hiro 200 500 1000 2000 4000 COLOR PALETTE Adjusts color of echoes text and background LANGUAGE JAPANESE ENGLISH FRANCAIS ESPANOL ITALIANO PORTUGUES DANSK NORSK SVENSK THAI CHINESE VIETNAM SYSTEM BACKUP NO YES LOAD BACKUP DATA NO YES HEADING OFFSET DRAFT OFFSET 180 180 0 O 60 m 0 ADJ MOTION SENSOR ROLL ANGLE 10 10 0 PITCH ANGLE 10 10 0 TX FREQ ADJUST 171 189 kHz 180 kHz TEST Checks equipment for proper operation TEST PATTERN Displays series of test patterns DEMO MODE OFF ON DEFAULT NO YES M 2 SPECIFICATIONS 1 GENERAL 1 1 Display System 10 4 inch color LCD 640 x 480 dots or locally supplied monitor 1 2 Transmit Frequency 180 kHz 1 3 Output Power 0 8 kW power reduction available 1 4 Range factory settings Range m 1 2 3 j4 5 6 7 8 9 10 t 12 13 14 15 _ Horizontal Mode Horizontal Mode 0000000
28. 0000000 000000 10 20 40 60 80 100 120 160 200 250 300 400 500 600 800 Vertical Scan Mode Vertical Scan Mode 10 20 30 40 60 80 100 120 160 200 250 300 400 500 600 1 5 Output Pulse Length 0 24 to 20 0 ms according to range 1 6 IVG Level 90 dB max Distance 0 1000 m 2 DISPLAY UNIT CONTROL UNIT 2 1 Picture Color Echo 16 or 8 colors echo Background 3 colors selected user setting available 2 2 Display Mode Horizontal Normal Expanded Vertical Scan Echo Sounder Vertical Search 2 3 Combination Display Plotter Vertical Scan Strata History 2 4 External Data Indication L L Depth Course Ship s speed Water current vector Track Water temperature External IEC 61162 data required 2 5 Audio Monitor 2 W output 4 ohms Freq 1 0 kHz external speaker required 2 6 Event Mark 5 points 2 Target Lock three functions selected on menu ocanning Reverse Scanning orientation changed by pressing key Position Search Auto search for marker setting position Echo Search Auto search for signal level in a search zone or manual search 3 HULL UNIT 3 1 Transducer Travel 350 mm or 250 mm 3 2 Raise lower Time 30 s at 350 mm travel 4 s at 250 travel 3 3 Allowable Ship s Speed 20 knot or less 15 knot during raise lower operation 3 4 Stabilizer Within 30 optional motion sensor or clinometer required SP 1 SPECIFICATIONS 3 5 Horizontal Mode Control scanning Angle 6 to
29. 2 6 Choosing the Tilt Angle 2 6 1 Choosing 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 0 and when emitted vertically 90 To set a tilt angle operate the TILT control Watch the tilt angle indication and the tilt angle indicator at the top right corner of the screen The tilt angle can be set in increments of 1 from 5 upward to 90 downward Automatic tilt selection is also available See AUTO TILT on page 2 24 for details Choose the tilt angle depending on target fish For surface fish choose a small angle about 5 to minimize sea surface reflections and for bottom fish a large angle about 40 to search a wide area Soundome 5 0 Horizontal direction Transducer Tilt angle setting range 90 Vertical direction Sounding beam and tilt angle 2 6 2 HORIZONTAL MODE 2 6 2 Relation between tilt angle and echo Refer to the illustration below to see the relation between tilt angle and bottom echo Case 1 Tilt angle 30 to 40 This tilt angle will display the entire bottom since it is captured by the full width of the beam Case 2 Tilt angle 10 to 20 This tilt angle will only display half the bottom since it is only captured by the lower half of the beam Case 3 Tilt angle 0 to 5 This tilt angle may or may not capture the bottom since the returning echo is weak The figure b
30. 360 24 step Scanning Center 6 steps 360 setting available Scanning Step Angle Normal 6 High speed 12 Elevation Angle 5 to 90 1 step Time to Train Full Circle Range m 10 20 40 60 80 100 120 160 200 250 300 400 500 600 wm 17 Time Mene ws nl ninin uim imm mee os 3 6 Vertical Scan Mode Control Scanning Angle 6 to 180 12 step Scanning Center 0 to 180 6 step Scanning Step Angle Normal 3 High speed 6 Time to Train 360 6 step Transceiver Beam Width 8 at 3dB full circle 10 at 6dB full circle 4 1 0 INTERFACE 4 1 Data Format IEC 61162 1 NMEA 0183 Ver 1 5 2 0 4 2 Input DBS DBT DPT GGA GLL HDG HDM HDT MDA MTW RMA RMC VDR VHW VTG 4 3 Output TLL 5 POWER SUPPLY 5 1 Transceiver Unit 12 32 VDC 4 7 1 8A 5 2 Hull Unit 12 24 VDC 4 0 2 5 A Max 10 6 A 5 3 Rectifier 100 115 220 230 VAC 1 phase 50 60 Hz 6 ENVIRONMENTAL CONDITIONS 6 1 Ambient Temperature Transceiver unit 15 C to 55 C Soundome 0 C to 35 C Hull unit 0 C to 45 C 6 2 Relative Humidity 95 6 3 Waterproofing Display Control unit IPX5 IEC 60529 Hull unit IPX2 Transceiver unit IPXO 7 COATING COLOR 7 1 Display Unit Control Unit Panel N3 0 Chassis 2 5GY5 1 5 7 2 Transceiver Unit 2 0GY5 1 5 SP 2 A AE 5 1 A SCODG display o e eom Dee tede 4 10 Auto retraction seeeeeeesess 5 11 EECH 2 24 B BS ACO dala a
31. 500 100 10000m DEFAULT SETTING NO YES A W SELECT dk CHANGE MENU END Range track mode menu 2 Press A or V to choose range number desired 3 Press 4 or gt to set 4 Press the MENU key to register settings and close the menu To restore default track range settings choose DEFAULT SETTING press to choose YES and then press the MENU key 5 16 5 MENU OPERATION 5 4 8 Color palette The color palette lets the user change the color of echoes background text and menu as desired Cursor COLOR PALETTE 12 345678 9 10 1112 131415 Arrow R BKGD TEXT MENU BKGD TEXT MENU BKGD TEXT MENU out WT skoo2 LI Kens DIE G n DOS co O B o EN DEFAULT SET YES ECHO amp BKGD COLORS WILL BE CHANGED A W sELECT dk CHANGE MENU END Color palette 1 Press lt or gt to place the cursor and arrow on the item to change Pressing 9 shifts the arrow and cursor from left to right 2 Press A or V to choose R red G green or B blue as appropriate 3 Press 4 or gt to adjust color 4 Press the MENU key to register your settings and close the menu To restore default color settings choose DEFAULT SET press to choose YES and then press the MENU key A few beeps sound while the default colors are being restored and then normal operation is restored 5 17 5 MENU OPERATION 5 4 9 Language Menu language can be chosen from among the languages shown in the Language menu L
32. ANGUAGE LANGUAGE JAPANESE ENGLISH FRANCAIS ESPANOL ITALIANO PORTUGUES DANSK NORSK SVENSK THAI CHINESE VIETNAM Language menu 5 4 10 System backup System settings can be saved to the internal memory with the menu item SYSTEM BACKUP SYSTEM BACKUP ARE YOU SURE YES NOTE OVERWRITES PREVIOUS BACKUP DATA dk CHANGE MENU END System backup menu 5 4 11 Loading backup data System data may be loaded from the LOAD BACKUP DATA menu LOAD BACKUP DATA ARE YOU SURE YES NOTE OVERWRITES CURRENT SETTINGS b CHANGE MENU END Load backup data menu 5 18 5 MENU OPERATION 5 4 12 Transducer frequency adjustment If the CH 270 is receiving interference from a video sounder or other sonar on board your ship adjust the frequency of the CH 270 s transducer to reduce the interference TX FREQ ADJUST FREQ SHIFT 180 0 kHz 171 189 kHz TX frequency adjustment menu 5 4 13 Demonstration mode The demonstration mode provides a simulated sonar picture to help you become acquainted with how your sonar works Connection of the transducer is not required All controls are operational 1 Display the SYS menu 2 Choose DEMO MODE 3 Press to open the menu DEMO MODE DEMO MODE ON CHANGE MENU END Demo mode menu 4 Choose OFF or ON as appropriate and then press the MENU key DEMO appears at the top of the screen when the demonstration mode is
33. EARCH DELTRACK AUTOTILT BKGD SIGLEVEL CLUTTER RES COLOR WHITE MARKER VER SEARCH VOLUME AUTO TILT BKGD SIGLEVEL CLUTTER RES COLOR WHITE MARKER SELECT FUNCTION TO BE ALLOCATED TO EACH CUSTOM KEY CUSTOM KEY MAY BE USED AS A PRESET KEY A W sELECT dk CHANGE MENU END SHORT CUT menu 4 Press A or V to choose key to preset For example choose KEY 1 5 Press 4 or gt to choose item ltem Description Ref Paragraph VER oee description on the next page SEARCH Note HORZ RANGE on the VERT MENU cannot be adjusted when vertical search is active Beeps sounds if you attempt to adjust the setting horizontal video plotter displays BKGD Choose background color SIG LEVEL Erase weak echoes from the screen 2 11 4 CLUTTER Suppress low intensity echoes 2 139 1 3 115 4 11 1 versus display echo level 4 11 1 MARKER 6 Press the MENU key to finish 5 6 5 MENU OPERATION Activating a short cut key 1 Press a CUSTOM MODE key and the dialog box programmed for the custom key pressed appears No dialog box appears for VER SEARCH The dialog box below is for CLUTTER CLUTTER HORZ WJ 1 2 3 Note Vertical search can only be activated when the horizontal mode or a combination mode is active 2 Press lt or gt to choose option desired 3 Press the MENU key to close the dialog box VERTICAL SEARCH FUNCTION When you find a target of interest on the horizontal display simply press the f
34. ECTOR TRAIN RANGE TILT and FAST SCAN controls according to target fish or fishing area Current setting is shown in the PRESENT section 5 Press the CUSTOM MODE keys 1 2 or 3 as appropriate to program You are asked if you want to save the settings to the custom key pressed In the example below the custom key 1 was pressed SAVE THE SETTINGS TO CUSTOM KEY 6 Press to choose YES 7 Press the MENU key The message PRGM SET appears at the screen top 8 Press the MENU key to finish Activating a custom mode key 1 Press appropriate CUSTOM MODE key The indication CUSTOM1 CUSTOM2 or CUSTOMS appears at the top of the screen depending on key pressed 2 To escape from the custom mode operation operate any of the following controls MODE SECTOR TRAIN RANGE TILT or FAST SCAN 5 5 5 MENU OPERATION 5 3 3 Changing setting of short cut key The default settings are key 1 vertical search key 2 volume and key 3 delete track The operator may change their functions as desired Note In the combination modes the short cut key may only be activated from the main window 1 Choose SHORT CUT following the procedure in paragraph 5 3 1 2 Press the MENU key to open the menu 3 Press A to choose MENU and then press lt or gt to choose SHORT CUT COM1 COM2 HORZ VERT ES Realiteit SYS VOLUME DELTRACK AUTOTILT BKGD SIGLEVEL CLUTTER RES COLOR WHITE MARKER VER S
35. ERATIONAL OVERVIEW 1 5 Choosing a Display This sonar has eight display modes and you may choose one with one of the DISPLAY MODE keys Refer to the chapter shown in the illustration for more information about each mode HORIZONTAL HORIZONTAL EXPANSION This mode provides 360 degree coverage Zoomed horizontal picture appears over Useful for general search Chapter 2 the entire screen Chapter 2 NAV DATA or A SCOPE Water temp depth VERTICAL SCAN ECHO SOUNDER Vertical section of underwater conditions Using a fixed spot beam this display appears on the entire screen Chapter 3 shows fish echoes below or around the vessel Chapter 4 NAV DATA lcd HORIZONTAL HISTORY HORIZONTAL VIDEO PLOTTER The horizontal picture appears in the main The horizontal picture appears in the main window the history picture in the sub window and the video plotter picture which window Useful for showing history of fish traces ship s track in the sub window movement distribution Chapter 2 Chapter 2 NAV DATA HORIZONTAL VERTICAL SCAN HORIZONTAL STRATA The horizontal picture appears in the main The horizontal picture appears in the main window the vertical scan picture in the sub window the strata picture in the sub window window Note that the vertical scan display The strata picture shows bottom undulatons may be located below the horizontal in different colors It is useful in bottom display with both displays near
36. INDOW appears for about four seconds Flat bottom and strata display Each layer on the strata display is equal to one train on the horizontal display Color a on the color bar i When the bottom is flat the horizontal display inscribes the bottom as a true circle and the strata display inscribes the color of point a The color of this position on the color bar is the color of point a on the strata display Flat bottom and strata display 2 33 2 HORIZONTAL MODE Projection in fore direction and strata display Color b on the color bar is displayed here 90 PORT STBD 90 Color a on the color bar Projection in fore direction and strata display Depth gradually becoming shallower in fore direction and strata display Color c Color b 1 Color b E a d Color a Color c Depth gradually becoming shallower in fore direction and strata display Depth gradually becoming deeper in fore direction and strata display a bc d cb Color a Color b k Color d ZS Color c Depth gradually becoming deeper in fore direction and strata display 2 34 3 VERTICAL SCAN MODE 3 1 Operational Overview The figure below shows the typical vertical scan mode operating sequence 6 Set center bearing of train 8 Set tilt angle sector 7 a Set scanning sector 5 Set range 11 Adjust menu settings 1 Turn on the power ex
37. N and then press gt to display the test pattern Press gt again to change the test pattern The pattern changes in the sequence shown below with each press of 5 Oh m M 16 tones of GREEN Test pattern To quit the test pattern press the MENU key three times 6 8 MENU TREE MENU key COM menu TX POWER MAX MIN PULSELENGTH LONG SHORT TX RATE EXTERNAL 1 10 10 INT REJECT OFF ON DEFAULT SETTINGS AGC OFF ON SHOWN IN BOLD ITALIC AUDIO LEVEL 0 10 COM menu DELETING TRACK NO YES WHITE MARKER 8 color OFF 1 7 16 color OFF 1 15 SIG LEVEL 8 color OFF 1 6 16 color OFF 1 14 COLOR 16 8 BKGD COLOR 1 2 3 HORZ menu TVG LEVEL 0 10 4 0 TVG DISTANCE 0 10 4 0 GAIN ADJUST 10 10 0 RES COLOR LOG LINEAR SQUARE CUBE CLUTTER 0 1 2 3 TARGET KEY REVERSE POS ECHO LOCK MODE AUTO MANUAL AUTO TILT OFF 2 4 6 x10 VERT menu TVG LEVEL 0 10 4 0 TVG DISTANCE 0 10 4 0 GAIN ADJUST 10 10 0 RES COLOR LOG LINEAR SQUARE CUBE CLUTTER 0 1 2 3 HORZ RANGE x1 x2 ES menu TVG LEVEL 0 10 4 0 TVG DISTANCE 0 10 4 0 GAIN ADJUST 10 10 0 RES COLOR LOG LINEAR SQUARE CUBE CLUTTER 0 1 2 3 A SCOPE OFF ON When SHORT CUT KEY is selected at SYSTEM SETTING 1 menu SHORT CUT menu KEY1 VER SEARCH VOLUME DEL TRACK AUTO TILT BKGD SIG LEVEL CLUTTER RES COLOR
38. R TARGET KEY REVERSE LOCK MODE AUTO AUTO TILT OFF A V SELECT 4 P CHANGE MENU END HORZ menu 3 Press A or V to choose TVG DISTANCE and then press gt The following dialog box appears GAIN 4 Press 4 or gt to set TVG distance between 3 0 and 5 0 130 320 m to decrease amplification of echoes on short range As a general rule use a higher setting for low frequency transducer a lower setting for high frequency transducer The larger the figure the greater the distance at which TVG works When you change a TVG setting DISTANCE or LEVEL the TVG line changes from solid to dashed the solid line denotes current TVG setting Petes 05 10 15 20 25 30 35 40 45 50 10 0 oetting 8 20 40 80 100 730 160 200 250 320 1000 Fee 1o s0 70 190210 330 410 S20 660 20 100 Jaen rPassibraza 2 s 10 20 40 60 80 100 120 iso 180 Jan Fams o s 10 20 ao eo eo 100 mo 140 170 Jm 2 15 2 HORIZONTAL MODE 5 Press the MENU key to register your selection and close the menu 6 To suppress reflections from the sea surface or plankton choose TVG LEVEL and then press bk TVG LEVEL GAIN Hi 7 Press lt or gt to adjust TVG LEVEL considering sea conditions The setting range is O to 10 however a setting between 2 0 and 5 0 should provide satisfactory results The higher the figure the less the gain over distance 8 Press the MENU key to register your
39. RT menu Press A or V to choose GAIN ADJUST Press to open the dialog box Press lt or gt to adjust QU Ip e X I Press the MENU key to register your selection and close the menu 3 14 3 VERTICAL SCAN MODE 3 11 4 Resolution color RES COLOR sets transfer characteristics of input signal level versus display echo level Echo strength is emphasized in order of CUBE SQUARE LINEAR LOG You can see the characteristics of each by watching the color bar as you change the setting 2 OV ee eor cos us Press the MENU key to open the menu Press A to choose MENU at the top of the screen Press lt or gt to choose the VERT menu Press A or V to choose RES COLOR Press to open the dialog box Press lt or gt to choose appropriate option referring to the description below LOG Displays weak to strong echoes in their respective levels This setting is suitable for general use LINEAR Downplays the weak echoes when compared with LOG Effective for suppressing weak echoes such as plankton SQUARE Strong echoes are emphasized more than in LINEAR CUBE Strong echoes are emphasized even more than in SQUARE Press the MENU key to register your selection and close the menu 3 11 5 Suppressing clutter Low intensity echoes often caused by sediments in water are painted on the screen as a large number or random dots This noise can be suppressed SE Ot ge Oe Te S Press the MENU key to open the menu
40. SET ADJ MOTION SENSOR TX FREQ ADJUST TEST TEST PATTERN DEMO MODE DEFAULT A V SELECT b MENU DISPLAY MENU END System menu 5 SYSTEM SETTING is highlighted press to open the SYSTEM SETTING menu SYSTEM SETTING 1 1 POSITION SHIP S LA SHIP S LOP CURSOR L L TRACK OFF CURRENT DATA FLOW FROM FLOW TO HEADING INDICATION TRUE AZ NORTH MARK OFF ON CSE DATA NA GYRO NAV DATA GP LoranC Lorana DR DECCA OTHERS TVG CORRECTION 1 2 1 1 UNIT ft fa HIRO P B TEMP F TARGET L L OFF ON CUSTOM KEY SHORT CUT KEY EMPHASIS MODE OFF RED ETA MARK OFF 10sec 30sec min 3min 6min A V SELECT dk CHANGE MENU END System setting 1 menu 6 Press A or V to choose CUSTOM KEY 7 Press 4 or gt to choose PRESET KEY or SHORT CUT KEY as desired 8 Press the MENU key twice to register your selection and close the menu 5 4 5 MENU OPERATION 5 3 2 Changing setting of preset key 1 Choose PRESET KEY following the procedure in paragraph 5 3 1 2 Press the MENU key to open the menu 3 Press A to choose MENU and then press lt or gt to choose PRESET COM1 COM2 HORZ VERT ES iili SYS MODE SECTOR TRAIN RANGE TILT PRESENT 360 O 160 30 CUSTOM1 240 160 30 CUSTOM2 360 30 CUSTOM3 180 90 ADJUST THE KNOBS AND FUNCTION KEYS TO THE DESIRED SETTING THEN PRESS A CUSTOM MODE KEY TO SAVE THE SETTING FUNCTION KEY ENTRY MENU END PRESET menu 4 Set the MODE S
41. The example screens shown in this manual may not match the screens you see on your display The screen you see depends on your system configuration and equipment settings 1 OPERATIONAL OVERVIEW 1 3 2 Power off 1 Press the f switch on the control unit The lamp above the switch blinks while the transducer is being raised and lights steadily when it is fully raised Transducer status indicator Up arrow is filled when transducer has been retracted into the tank e Down arrow is filled when transducer has been fully lowered e Appropriate arrow flashes during raising lowering of transducer NOTE When the transducer is being raised automatically auto raise feature the arrows are filled and the up arrow flashes When the transducer has been fully retracted the up arrow lights and the down arrow becomes hollow Transducer status indicator 2 Press the POWER switch after the lamp above the f switch lights steadily Note 1 The transducer is automatically retracted into the tank if the POWER switch is pressed before retracting the transducer However for safety purposes make it a habit to retract the transducer before turning off the power Note 2 After changing settings wait at least one minute before turning off the equipment to allow the equipment to memorize settings This will enable the equipment to start up with the last used settings No harm will result to the equipment if this is not done Note 3
42. The hull unit remains powered when power is turned off at the control unit Therefore if the sonar is not to be used for a long period turn it off at ship s mains switchboard 1 OPERATIONAL OVERVIEW 1 4 Raising Lowering the Transducer 1 4 1 Lowering the transducer With the boat at the fishing ground press the 9 switch to lower the transducer The lamp above the switch blinks while the transducer is being lowered and lights when it is completely lowered The down arrow on the transducer status indicator is filled when the transducer is completely lowered CAUTION Do not exceed 20 knots when operating the equipment and do not exceed 15 knots when lowering or raising the transducer The transducer may become damaged 1 4 2 Raising the transducer Press the f switch to raise the transducer The lamp above the switch blinks while the transducer is being raised and lights steadily when it is fully raised The up arrow of the transducer status indicator is filled when the transducer is fully raised Note 1 With speed input the transducer can be automatically raised when the ship s speed exceeds a speed between 5 and 15 knots For further details about the automatic retraction feature see AUTO RETRACTION in paragraph 5 4 3 Note 2 Audio and visual alarms may be released when ship speed goes higher than allowed for a certain transducer operation For further details see SPEED ALARM MESSAGE in paragraph 5 4 3 1 OP
43. This type of noise can be suppressed with the interference rejector on the COM1 menu A Inteference from B Interference from other sonars yours marine life or other s Noise and interference 2 29 2 HORIZONTAL MODE 2 14 3 Combination display examples Horizontal history display Press the key to display the horizontal history display Tilt angle Cursor position data Range Tilt angle indicator e Interference rej ON pe Target lock indicator Transducer status indicator Own ship MPH KS WS SRE uoc WEE 34 12 343 N Position in latitude position CSE 357 SPD 9 9 kt Course speed Fish echo Bottom echo Cursor Requires appropriate sensor input L Horizontal Display L History Display main window sub window Horizontal history display The horizontal display appears in the main window the history display in the sub window The length of the picture displayed in the history display is equal to about four full circle pictures Thus the history display lets you observe the history of fish movement and distribution It is also useful for detecting bottom fish reefs and sunken vessels Note that the history display cannot be adjusted 2 30 2 HORIZONTAL MODE Horizontal video plotter display Press the key to display the horizontal video plotter display Tilt angle Cursor position data Range Tilt angle indicator Interference rej
44. ULL HALF control horizontal mode n nene 2 4 vertical scan mode 3 7 Fuse repnlacement 6 3 G GAIN CONTO EE 1 7 Gain offset echo sounder mode 4 11 horizontal THO eti p sies oiiP aimes 2 23 vertical scan mode 3 14 H Heading data indication format 5 10 SOUE 5 10 Horizontal expansion display 2 18 Horizontal history display 2 30 2 31 Horizontal strata display 2 32 Horizontal vertical scan display 3 4 HORZ menu 2 23 Hull unit maintenance 6 2 I Interference rejection 3 14 L La ang age esee ua du b iul M mated 0 18 M MAIN SUB key 2 31 2 32 Maintenance Ee Le cet m 6 1 fuse replacement n nnnannnnannnnnnnnenennnnne 6 3 RUNU EE 6 2 DreVenfVe 0 ceccceeccceeeeceeeeeeeeesaeeeseeeeaes 6 1 AS Ee 6 3 MNT eee 1 8 INDEX Menu NCO eege AP 1 N Klient 5 10 P FAC CUMING s nece diuo ou oi ues easiest cub unos 1 7 Picture advance speed echo sounder mode 4 4 Position data elt aestu dea deo dede dui taal ed Chet Chii detiene dis 5 9 elle 5 10 POW ER Ge 1 3 PUISCIGNOUA aaetcudeaetencieaetuzzketetuzaFatetu2sas uius 2 14 R R B key echo sounder mode
45. Y UNIT MU 100C A TIT Navigator MEME Control Unit aia T ummummm d T DIsplay Unit 4 External j Monitor HULL UNIT SPEAKER Note 1 The CH 270 is supplied with or without a display unit For connection of locally supplied monitor an interface unit is provided The drawing above shows the system configuration 12 24 VDC with the MU 100C HULL UNIT CH 184 Note 2 For use of a locally supplied monitor connect Standard it and control unit to the pce I qo Option interface unit OTI dee Local Supply 1 OPERATIONAL OVERVIEW 1 1 Control Description Chooses center bearing of training sector Chooses detection range Switches training sector between 180 and 360 horizontal mode or 180 vertical scan mode Ee Chooses scan speed sonar picture Raises the transducer advancement speed echo sounder Adjusts receiver Controls tilt angle sensitivity e Selects center direction of the vertical scanning sector Chooses width of s Turns target lock on off training sector Omnipad e Shifts cursor e Selects menu items options Lowers the transducer Choose display mode Provide short cut key or one touch Opens closes setup menu Adjusts display Inscribes erases event panel dimmer l Inscribes erases range Swithes control between and bearing markers main and sub windows in combination displays FURUNO Sub window is circumbscrib
46. a 2 Press the EVENT key to show the following dialog box Do the next step within four seconds otherwise the dialog box will be erased DELETE EVENT MARK YES 3 Press to choose YES and then press the MENU key All event markers are erased from the screen 4 6 4 ECHO SOUNDER MODE 4 9 Range Marker The range marker functions to measure the range to a target echo fish school bottom etc 1 Operate the Omnipad to place the cursor on the location desired 2 Press the R B key to display the range marker The range marker appears along with range indication 3 To erase the range marker place the cursor on the marker or outside the display area and then press the R B key Range marker Range Depth Water Temp Display Range marker 4 7 4 ECHO SOUNDER MODE 4 10 Adjusting the Picture 4 10 1 Displaying weak echoes clearly Echoes from targets such as the bottom or a fish return to the transducer in order of the distance to them and when their intensities are compared 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 won t be able to judge the actual size of the target from the size of echoes displayed on the screen To overcome this inconvenience use the TVG function It compensates for propagation loss o
47. able 3 normal speed and 6 high speed Each time the key is pressed the display momentarily shows NORM normal speed or FAST high speed Normal 60 transmissions to complete a half circle in increments of 3 High 30 transmissions to complete a half circle in increments of 6 The time required to scan one full area of 180 depends on range used and other factors The table below shows the time required to complete one full area on each range mw iJe e a s e epe onie a a Be cacteiciaicieiaiciaia tee Time sec co one full area ae DEER Time sec a one full area Note Values shown are for reference purposes Actual values may vary 3 8 Finding Echo Position with the Cursor The cursor measures horizontal range and depth Operate the Omnipad to place the cursor where desired Cursor data appears at the top left hand corner on the screen Cursor data Horizontal range J Depth Cursor Location of cursor position data 3 VERTICAL SCAN MODE 3 9 Event Marker 3 9 1 Entering an event marker The event marker functions to mark important locations on the screen and five may be inscribed Each time the EVENT key is pressed the latest event marker 6 is inscribed at the cursor location and all previously entered event markers are shown by the previous event marker When the capacity for event markers is reached the eldest event marker is erased from the screen to m
48. ace the cursor outside the display area 2 Press the EVENT key to show the following dialog box Do the next step within four seconds otherwise the dialog box will be erased DELETE EVENT MARK YES 3 Press to choose YES and then press the MENU key All event markers are then erased from the screen 2 10 Depth and Horizontal Range Markers The horizontal range depth and bearing to a fish school can be measured by using the range and bearing markers 1 Operate the Omnipad to place the cursor on the location desired 2 Press the R B key to display the range and bearing markers Horizontal range depth and bearing to the cursor location are shown at the bottom right hand corner of the screen 3 To erase the range and bearing markers place the cursor at the intersecting point of the depth and horizontal markers or outside the display area and then press the R B key Bearing marker Range marker Range and bearing markers data Horizontal range Depth B Bearing from ship s bow Range and bearing markers 2 12 2 HORIZONTAL MODE 2 11 Adjusting the Picture 2 11 1 Suppressing bottom and surface reflections In shallow fishing grounds excessive sea surface and bottom reflections often interfere with wanted fish echoes and they cannot be eliminated sufficiently with the TVG controls In such cases try to reduce the output power without turning down the gain The picture becomes clearer when o
49. ae atin see eae gs ea cists cna new eee RN IN 1 vi FOREWORD Thank you for purchasing the CH 270 Color LCD Searchlight Sonar We are confident you will discover why FURUNO has become synonymous with quality and reliability Dedicated in the design and manufacture of marine electronics equipment for more than half a century FURUNO Electric Company has gained an unrivaled reputation as a world leader in the industry This is the result of our technical excellence as well as our worldwide distribution and service network Please carefully read and follow the safety information and operating and maintenance instructions set forth in this manual before attempting to operate the equipment and conduct any maintenance Your sonar will perform to the utmost of its ability only if it is operated and maintained in accordance with the correct procedures Features The CH 270 displays underwater objects on a bright 10 4 inch color LCD display in 8 or 16 colors according to received echo strengths Alternatively the interface unit permits connection of a commercial CRT or LCD monitor to act as the main backup or remote display Operating frequency is 180 kHz The main features of the CH 270 are e High definition active matrix color LCD e arget lock on a fish school or stationary position reef etc e Audible detection of echoes frees the operator from continuous watch of the display e Compact display and hull units permit installation
50. aining center direction For vertical scan display Sets direction of bearing cursor shown on the horizontal mode display SECTOR control For the vertical scan display When the display sector is 6 minimum the tilt angle of the horizontal and vertical scan modes are interlocked and each transmission on the horizontal display is reflected on the vertical scan display The message TILT ANGLE MONITOR WINDOW momentarily appears on the screen and the vertical bearing cursor disappears Note Only the SECTOR control may be operated in this condition 3 5 3 VERTICAL SCAN MODE 3 3 Choosing the Range The RANGE control chooses the detection display range in 15 settings Choose the range according to either the fish species being searched or the depth desired Each time the control is operated the newly chosen range briefly appears in large characters at the screen top Range is permanently displayed at the top right hand corner of the screen Default vertical scan mode range settings um fja 2 a 4 5 e 7 e 9 jq m 12 fji fia J15 Meters 10 20 30 40 60 80 100 120 160 200 250 300 400 500 600 Feet 30 60 90 120 150 200 250 300 400 500 600 800 1000 1500 2000 Note 1 Unit of range measurement may be chosen from among meters feet fathoms passi braza and Hiro Japanese with UNIT on the SYSTEM SETTING 1 menu For further details see UNIT in paragraph 5 4 2 Note 2 Ranges m
51. ake room for the latest Note 1 The latitude and longitude position of the event marker can be output to a video plotter and that position inscribed on the plotter s screen with the external waypoint mark X Each press of the EVENT key outputs event marker position For further details see TARGET L L in paragraph 5 4 2 Note 2 Event markers cannot be inscribed in the vertical scan display when it is in the sub window Horizontal vertical scan display Inscribe the marker on the horizontal display to show it in the vertical scan display 1 Operate the Omnipad to place the cursor on the location desired for an event marker 2 Press the EVENT key to inscribe the event marker The event marker is inscribed on the vertical scan display as well as the horizontal and video plotter displays Display area Previous event marker Latest event marker To delete all event markers place cursor outside display area and press the MENU key How to inscribe and delete the event markers 3 10 3 VERTICAL SCAN MODE 3 9 2 Deleting all event markers All event markers can be erased from the screen as follows 1 Operate the Omnipad to place the cursor outside the display area 2 Press the EVENT key to show the following dialog box Do the next step within four seconds otherwise the dialog box will be erased DELETE EVENT MARK YES 3 Press to choose YES and then press the MENU key All event markers are e
52. ay be freely preset as desired For further details see paragraph 5 4 5 3 4 Choosing Train Center The TRAIN control determines the bearing of the vertical scan beam from 0 to 180 Bearing of beam position can be found by observing the train indicator 0 360 gt 6 gt 12 gt 18 gt 180 DS Train Indicator Train of Vertical Scan Beam indicator Train indicator Train 0 Train 90 Train 180 Qa E Ch e Train indicator and display 3 6 3 VERTICAL SCAN MODE 3 5 Choosing Display Sector Sector means the width of the transducer training from 6 to 180 Sector Shown 24 Sector The SECTOR control chooses the training area among the sixteen positions shown in the table below Clockwise rotation of the control increases the sector width counterclockwise rotation decreases It p21 2 3 4 5 6 7 8 9 o un Re Bi 4 5 6 One touch selection of 180 sector 1 Press the FULL HALF key A half circle display of 180 is presented and FULL momentarily appears at the top of the display 2 Press the FULL HALF key again and a 120 sector display is presented and 120 momentarily appears at the top of the display Note Operating the SECTOR control after step 1 in the procedure above will display the 180 sector at the next pressing of the FULL HALF key Sector set with SECTOR control Half circle FULL HALF key 180 E key de gt 4 H
53. b window when it is selected With the video plotter display selected you may change its range with the RANGE control Note Controls other than RANGE may only be operated from the main window When you attempt to operate them when the sub window is selected the message SELECT MAIN WINDOW appears 2 31 2 HORIZONTAL MODE Horizontal strata display Press the key to display the horizontal strata display Tilt angle Cursor position data Range Tilt angle indicator Interference rej ON Target lock indicator Q Transducer status indicator Own ship DS ES marker EE x 08 73 34 12 343 N Position in latitude Train E ER e ger WES 134 34 219 W and longitude position Um A CORR NEM K CSE 357 SPD 9 9 kt Course speed ida E _ PORT STBD Number of lines increases by one with each train Color bar Top line is latest bottom E a line is oldest isplay Requires appropriate sensor input Cursor 90 0 490 Heading L Horizontal Display JL Strata Display main window sub window Horizontal Strata display The horizontal display appears in the main window the strata display in the sub window The strata picture shows bottom undulations in different colors This is useful in bottom trawling for avoiding obstructions which may damage the net Coverage for the horizontal mode is 360 picture and for the strata display it
54. c Menu Operation The menu consisting of seven menus mostly contains items which once preset do not require frequent adjustment Below is the procedure for basic menu operation 1 Press the MENU key to open the menu The last used menu is displayed In the example below the COM2 menu is shown Note Either PRESET or SHORT CUT appears between ES and SYS at the top of the menu depending on the setting of CUSTOM KEY on the SYSTEM SETTING 1 menu For further details see paragraph 5 3 ewes HORZ VERT ES PRESET SYS DELETING TRACK WHITE MARKER SIG LEVEL COLOR BKGD COLOR Dialog box appears here when a menu item is selected A V SELECT 4 P CHANGE MENU END COM 2 menu 2 To choose a menu press A to choose MENU at the top of the screen if it is not already chosen and then press lt or gt to choose menu desired 3 Press A or V to choose menu item desired Menu help is provided at the bottom of the screen 4 Press gt to open the corresponding dialog box The example below shows the dialog box for DELETING TRACK in the COM2 menu DELETING TRACK YES Dialog box for deleting track 5 Press lt or gt to choose option desired If input of numeric data is required use lt or gt to lower or raise the figure respectively 6 Press A or V to close the dialog box and return to the menu or press the MENU key to register your selection and close the menu 2 HORIZONTAL MODE 2 1 Operational Overview
55. d and one may be chosen with the FAST SCAN key Each time the key is pressed NORM normal speed or FAST high speed momentarily appears at the screen top Normal 6 60 transmissions required to complete the full 360 picture High 12 30 transmissions required to complete the full 360 picture The time required to train a full circle depends on range used and other factors The table below shows the time required to complete one full circle on each range EC ee ERSBBEEIBEIEIPIESHIEEIIEIES Time res Hom en E sec for circle m za sec for circle Note 1 The above values are for reference purposes The actual training speed may vary Note 2 he range setting must be at least 160 meters to activate high speed training 2 8 Finding Echo Position with the Cursor The cursor measures horizontal range depth and bearing Operate the Omnipad to place the cursor where desired Cursor position data appears at the top left hand corner on the screen Cursor position data Horizontal range V Depth B Bearing Cursor Location of cursor position data 2 10 2 HORIZONTAL MODE 2 9 Event Marker The event marker functions to mark important locations on the screen and five may be inscribed Each time the EVENT key is pressed the latest event marker 6 is inscribed at the cursor location and all previously entered event markers are shown by the previous event marker When the
56. d 3 2 DEFAULT SETTING Choose YES and then press the MENU key to restore all default system menu settings Several beeps sound while default settings are being restored and then normal operation is restored FACTORY SETTING ARE YOU SURE YES NOTE ALL THE SYSTEM SETTING WILL BE CHANGED TO FACTORY SETTING b CHANGE MENU END FACTORY SETTING display 5 12 5 MENU OPERATION 5 4 4 Sonar horizontal mode range settings The user may preset horizontal mode ranges as desired 1 Choose RANGE SONAR MODE at the SYS menu and then press gt RANGE SONAR MODE 10 10 1600m NO O AJIN OjO Oloo O O B O O NO C1 O 2 a 3 4 5 7 6 i T7 8 s 9 10 11 01l eA O O O O Ooljo Co O O DEFAULT SETTING NO YES A W SELECT dk CHANGE MENU END Range sonar mode menu 2 Press A or V to choose range number desired 3 Press 4 or gt to set range 4 Press the MENU key to register settings and close the menu To restore default horizontal mode range settings choose DEFAULT SETTING press gt to choose YES and then press the MENU key 9 13 5 MENU OPERATION 5 4 5 Vertical scan mode range settings As with the horizontal mode the user may preset the vertical scan mode s ranges 1 Choose RANGE VER MODE at the SYS menu and then press gt RANGE VER MODE 10 600m O AIO IIN O OIIO oOo NO O B O O NO e
57. d with maximum transmitter power when the ship is dry docked e When the ship is dry docked check the soundome for signs of electrolytic corrosion Find the reason for the corrosion and attach a zinc plate to the location as an anticorrosion measure viii SYSTEM CONFIGURATION CH 270 350 stroke INTERFACE UNIT IF 8000 222232 Navigator seeeeeeeee es Control Unit E semen gee a BNEENENENEENEMENEE E E E E Display Unit iExternal Monitor K s Remote n Controller 3 HULL UNIT QJ TRANSCEIVER UNIT SPEAKER i e H CH 273 EN 2 onn as ummlndu Speaker 12 32 VDC Motion Sensor a a i acre RN A Us diag a Note 1 The CH 270 is supplied with or without a display unit For connection of HULL UNIT locally supplied monitor an CH 181 fi interface unit is provided The drawing above shows the system configuration with the MU 100C Note 2 For use of a locally supplied monitor connect it and control unit to the interface unit How to remove the hard cover system with locally supplied monitor only Place your thumbs at the locations shown with circles in the illustration at right and then lift the cover while pressing it with your thumbs DISPLAY UNIT MU 100C we 12 24 VDC Standard Option E N Local Supply iX SYSTEM CONFIGURATION CH 270 250 stroke INTERFACE UNIT IF 8000 Tu DISPLA
58. desired For further details see paragraph 5 4 4 2 3 2 HORIZONTAL MODE 2 4 Choosing Sector Width Sector means the width of the transducer training The SECTOR control chooses the training display area among the sixteen positions shown in the table below Clockwise rotation of the control increases the sector width counterclockwise rotation decreases it YN Display sector shown 96 Display sector 2 3 4 5 6 7 8 9 1 01 2 1 14 5 168 In the full circle mode 360 the direction of training is clockwise in the half circle mode the direction is clockwise to counterclockwise alternately One touch selection of 360 sector Each pressing of the FULL HALF key alternately chooses 360 sector full circle or 168 sector half circle If the SECTOR control is operated following the selection of the full circle display the next pressing of the FULL HALF key presents the full circle display Sector set with SECTOR control Full circle Half circle FULL HALF FULL HALF Jr How the FULL HALF key works 2 HORIZONTAL MODE 2 5 Choosing Train Center The TRAIN control chooses the center direction of the detection range The range of adjustment is 0 to 354 in increments of 6 The chosen bearing is shown with a filled circle the train indicator on the bearing scale 0 860 6 gt 12 gt 18 5 354 Train indicator Sector Train center 2 5 2 HORIZONTAL MODE
59. ed montor with a red rectangle when it only is selected Horizontal Video Plotter Horizontal Vertical Scan Horizontal History Horizontal Strata x 65 68 DISPLAY MODE eJ 8 3 E3 Horizontal Echo Sounder Horizontal Expansion Vertical Scan Control unit 1 OPERATIONAL OVERVIEW 1 2 Remote Controller The Remote Controller CH 256 option provides armchair control over range tilt target lock and training range Choose display range Choose tilt angle Chooses training range for full circle 360 horizontal mode or half circle 180 vertical scan mode Enables disables target lock REMOTE CONTROLLER Remote controller Note The remote controller can also be used with a commercial monitor 1 OPERATIONAL OVERVIEW 1 3 Turning the Power On Off 1 3 1 Power on Press the POWER switch on the control unit until you hear a click A beep sounds the lamp above the switch lights and the startup display appears for four seconds MarineElectronics MODEL CH 270 180kHz Startup display Note 1 Wait at least five seconds before reapplying the power Note 2 The first time the power is applied after installation the language selection screen appears English is selected press the MENU key to erase the screen and continue Please set language A W Select MENU Enter XXXX For Japanese Customer XXXX Japanese Language selection screen Note 3
60. een to make room for the latest Note 1 The event marker inscribed on the echo sounder display will also be inscribed on the horizontal and video plotter displays However the marker is always inscribed at own ship position on the horizontal and video plotter displays regardless of the location of the marker on the echo sounder display Note 2 The latitude and longitude position of the event marker can be output to a video plotter and that position inscribed on the plotter s screen with the external waypoint mark X Each press of the EVENT key outputs event marker position For further details see TARGET L L in paragraph 5 4 2 Note 3 Event markers are automatically erased as they move off the screen with picture advancement However event marks entered from the echo sounder remain on the horizontal and video plotter displays until they are erased 4 5 4 ECHO SOUNDER MODE 4 8 4 Inscribing the event marker 1 Operate the Omnipad to place the cursor on the location desired for an event marker 2 Press the EVENT key to inscribe the event marker 4 8 Display area Previous event marker Latest event marker To delete all event markers place the cursor outside the display area and press the EVENT key How to inscribe and delete the event markers 2 Deleting all event markers All event markers can be erased from the screen as follows 1 Operate the Omnipad to place the cursor outside the display are
61. ees 6 8 TILT control echo sounder mode 4 4 horizontal mode eene 2 6 vertical scan mode 3 8 Track al dn EE 5 2 al He E 5 9 Elle EE 0 16 TRAIN control echo sounder mode 4 4 horizontal mode eene 2 5 vertical scan mode 3 6 Transducer frequency adlustment 5 19 Imiaintenafiee EE 6 3 Transmitter output DOwer 2 13 Troubleshooting ssssssss 6 4 TVG EIDEN 5 10 echo sounder mode 4 8 horizontal mode wesw eens 2 14 vertical scan mode 3 12 Pa rM C A P EE I EE E 5 1 U Unit depth measurement 5 10 temperature measurement 9 10 W White marker eee ee eve ave ke cisci 5 2 X XDR SWIC e E 1 4 1 5
62. elow illustrates how two fish schools a and b are displayed on the screen using three different tilt angles Case 1 Tilt angle 30 to 40 Fish school is obscured by the bottom Case 2 Tilt angle 10 to 20 Fish school is located above the bottom midwater Case 3 Tilt angle 0 to 5 Fish school is located close to the bottom Case 1 Case 2 Case 3 Bottom Bottom Fish school b Fish echo and tilt angle 2 1 2 HORIZONTAL MODE Points to consider e Normally a vertically distributed fish school is a better sonar target than the bottom because it reflects the transmitted pulse back toward the transducer e n case 3 both fish schools a and b are presented Generally speaking however midwater fish schools tend to be larger than bottom fish schools and they are often displayed near the bottom on the display e t is difficult to detect bottom fish when they are not distributed vertically 2 6 3 Tilt angle for surface fish oound emitted from the sonar transducer forms an oval shaped beam with a width of approximately 8 in the vertical direction vertical beam width The tilt angle is indicated by the angle between the center line of the beam and the horizontal plane Then if the tilt angle is set to O the center line is parallel with the sea surface and one half of the emitted sound goes upward toward the sea surface This causes one half of the emitted sound to be reflected toward
63. els This setting is suitable for general use LINEAR Downplays the weak echoes when compared with LOG Effective for suppressing weak echoes such as plankton SQUARE Strong echoes are emphasized more than in LINEAR CUBE Strong echoes are emphasized even more than in SQUARE Press the MENU key to register your selection and close the menu 4 11 4 ECHO SOUNDER MODE 4 10 5 Suppressing clutter Low intensity echoes often caused by sediments in water are painted on the screen as a large number or random dots This noise can be suppressed Press the MENU key to open the menu Press A to choose MENU at the top of the screen Press lt or gt to choose the ES menu Press A or V to choose CLUTTER Press to open the dialog box Press lt or gt to choose O 1 2 or 3 as appropriate The higher the number setting the weaker the echoes which are erased On WN 7 Press the MENU key to register your selection and close the menu 4 12 9 MENU OPERATION 5 1 COM Menu 5 1 1 Displaying the COM1 menu 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press lt to choose COM 1 COM2 HORZ VERT ES PRESET SYS TX POWER PULSELENGTH TX RATE INT REJECT AGC AUDIO LEVEL A V SELECT dk CHANGE MENU END COM 1 menu 5 1 2 COM1 menu description TX POWER Chooses transmitter output power to maximum or minimum For further details see paragraph 2 11 1 PULSELENGTH Ch
64. emove stubborn dirt use an LCD cleaner wiping slowly with tissue paper so as to dissolve the dirt Change paper frequently so the dirt will not scratch the LCD 6 1 6 MAINTENANCE TROUBLESHOOTING 6 3 Hull Unit Maintenance 6 3 1 Lubrication Coat the raise lower screw shaft once a year with Molytone grease Also grease the raise lower main shaft upper part of the grease cotton retainer twice a year 6 3 2 Manually raising lowering transducer A WARNING Turn off the power at the ship s mains switchboard before conducting the procedure below Moving parts can cause bodily injury Hull unit CH 181 1 Turn off the breaker on the hull unit and unplug the connector on the motor lead wires in the hull unit This will make raising and lowering of the soundome easier because the motor which works as a generator will be isolated from the load 2 Remove the top cover of the raise lower drive assy and attach the hand crank as shown below Hand Crank Unplug connector on lead wires Hull unit top cover of raise lower assy opened 3 Turn the hand crank to check that the transducer rises and lowers smoothly from the upper to the lower limit positions If the transducer cannot be raised smoothly do not use force the shaft may bend 6 MAINTENANCE TROUBLESHOOTING Hull unit CH 184 1 Turn off the breaker switch on the hull unit 2 Slightly loosen the bolts fastening the shaft retainer 3 Raise and
65. ertical scan bearing cursor Range Tilt angle indicator Interference rejector ON Target lock indicator Transducer status indicator Own ship E RE p marker B E iE Y UU e Sid 12 343 N Position in latitude Tan AE Se VENT Lundi a M and longitude position RS E ve i CSE 357 SPD 9 9 KT Course speech FORE Requires navigator Sweep indicator Cursor tilt angle Horizontal Display L Vertical Scan Display main window sub window Horizontal vertical scan display The size of the vertical scan and horizontal displays and the location of the vertical scan display may be changed as desired Press the ec key to change the arrangement as in the figure below 3 VERTICAL SCAN MODE The displays are independent of each other so you can adjust them as desired Press the MAIN SUB key to choose the window to adjust Each press of the key momentarily displays MAIN WINDOW CONTROLLABLE or SUB WINDOW CONTROLLABLE at the top of the screen to let you know which window may be adjusted A red rectangle circumscribes the sub window when it is selected The following controls are operative from either window SECTOR TRAIN RANGE TILT FAST SCAN FULL HALF and CUSTOM MODE Note R B EVENT or TARGET controls may only be operated from the main window When you attempt to operate them when the sub window is selected the message SELECT MAIN WINDOW appears TRAIN control For horizontal display Sets tr
66. eseeeseeceeeseeseeeeeeeeeeaeesaes 2 6 2 6 2 Relation between tilt angle and echo ec ec cece eee eee eeceeee eee eeaeeseeseeseeseeeaees 2 20 9 Hitangle TOF SUMACE estate dee de 2 8 204 Sltable tlt adig eege Ee 2 9 27 Choosing the Training SPEEA e t tre ht eto a d asta sete to 2 10 2 8 Finding Echo Position with the Cursor 2 10 29 Event Marko na cH 2 11 2 9 1 Inscribing the event marke essare aa aaa E 2 11 2 9 2 Deleting all event Markel ccccccecceecceeceeceeceeceeceeceecaecesaeceeeceeseesenseesass 2 12 2 10 Depth and Horizontal Range Markerg nennen 2 12 2 1 EE EECHER eebe 2 13 2 11 1 Suppressing bottom and surface reflections cceccecceeceeeeeeeeeeeeeeeeeeeeees 2 13 2 11 2 9uppressing DOOM tall tei ta qe eb di to qe ea at hdi aa EX e a 2 14 2 11 3 Displaying weak echoes clearly eseeseeeeeeeeeerer 2 14 2 11 4 Ee Ree 2 17 2 11 5 Enlarging fish echoes horizontal expansion depla v 2 18 ZIV VATS e 2 19 2 12 1 Choosing target lock mode nennen nnn nens 2 19 2 12 2 Manual reverse mode casses amati arde casei arcu eco brad acero ea Dried 2 19 2 12 5 Ee dei Ee ele 2 20 ZNZAECMO E ue e 2 21 TABLE OF CONTENTS Zo Horizontal Men OVERVICW tee Een 2 23 2 14 Interpreting the Horizontal Display ccccccccccceeeeeeceeceeceeee eee eseeeeeeaeeseeseeeeeeeeeaees 2 25 2 14 1 How the horizontal mode picture is painted eeseeeeessesss 2 25 2 14 2 oa
67. f sound in water amplification of echoes on short range is Suppressed and gradually increased as range increases so that similar targets are displayed in similar intensities irrespective of the ranges to them The TVG also functions to suppress unwanted echoes and noise which appear in a certain range area on the screen To adjust TVG 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press lt or gt to choose the ES menu COM1 COM2 HORZ VERT Bai PRESET SYS TVG LEVEL TVG DISTANCE GAIN ADJUST RES COLOR CLUTTER A SCOPE A W sELECT dk CHANGE MENU END ES menu 4 8 4 ECHO SOUNDER MODE 3 Press A or V to choose TVG DISTANCE and then press bk The following dialog box appears DEE 4 o m dii GAIN Hi Lo 200 m Press lt or gt to adjust TVG distance TVG Distance Setting Press A or V to close the dialog box and return to the ES menu To suppress reflections from the sea surface or plankton choose TVG LEVEL and then press b Press lt or gt to adjust TVG LEVEL Press the MENU key to register your selection and close the menu 4 ECHO SOUNDER MODE 4 10 2 Finding echo strength A scope display The A scope display shows echoes at each transmission with amplitudes and tone proportional to their intensities on the right 1 4 of the screen It is useful for estimating the kind of fish school and bottom composition Press the MENU key Press A to ch
68. fecedecedaccdscedeesdseatscedacedsaqdeantecs 5 18 SIN WEE 1 7 sidlligefe cL 1 7 C Clutter echo sounder mode 4 12 horizontal mode 2 24 vertical scan mode 3 15 Color palele 5 motores 5 17 Colors pack ground sucsestsatasud eredi anaa 5 2 ale 0 2 COM menu 5 1 COMZ MeN E 5 2 Control description 1 1 CUITTGTIO Cl eege 5 9 Custom key choosing function 5 4 DES S Cl eege 5 5 SRON C1 anie een rece dee 5 6 D Default settmgs 5 20 Demonstration mode 5 19 Diagnostics ceececceeeeeceeeeeeeeeeeeaeeesneeeeess 6 6 Display MOE EE 1 7 E Emphasis mode 0 10 Error messages eesseeseeeee enne 6 5 ca A apris c etm 5 10 EVENT key echo sounder mode 4 5 horizontal mode 2 11 vertical scan mode 3 10 Event marker deleting from echo sounder mode 4 6 deleting from horizontal mode 2 12 deleting from vertical scan mode 3 11 inscribing in echo sounder mode 4 6 inscribing in horizontal mode 2 11 inscribing in vertical scan mode 3 10 F FACTORY SETTING display 5 12 FAST SCAN key echo sounder mode 4 4 ajejdr4onrziBupojo e e UE 2 10 vertical scan mode 3 9 F
69. fmple echo displays EE 2 26 2 14 3 Combination display examples nnononnnenenonnnennnnrsnenrnrerrrrnrsrrnrersrrrrersrrnrne 2 30 e VERTMCAL SCAN MODE eege 3 1 S COperadonal EIER asra a a 3 1 3 2 Displaying Vertical Scan Mode usplayv 3 2 3 2 1 Typical vertical scan mode display 3 2 3 2 2 How the vertical scan picture is paimnted ccc ccc ecceeceeceeceeeeeeeeeeeeeeeeeeeeens 3 3 3 2 3 Horizontal vertical scan display 3 4 9 9 Choosing th allies scs dos eed x dec eeu eto o en EE 3 6 9d CANOGA 21 gin etel occae sends tus Emu Uc aud e tte meena ce Caer nee rcd eeu ees 3 6 3 5 Choosing Display e E 3 7 3 0 CHOOSING Ee den EE 3 8 Bar Choosing Me TIE SPCCO EE 3 9 3 8 Finding Echo Position with the Cursor aneannnnennnnnnnennnnnnrnnnnrnrrnnnnrnrnnrnnrerrnrnnrnne 3 9 9 9 ug EN EE 3 10 3 9 1 Entering an event marker ccccccceccecceeceeceeceeceecaecceeceeceeseeseesaesuesaeeaeeees 3 10 3 9 2 Deleting all event markers an0nnannnnanannnoanannnnnnnnnnnnrnnnrnnrnrnrnnrnrnrrnrnrnerernnne 3 11 3 10 Depth and Horizontal Range Markers anannanannnnanannnnannnonnannnnnrnnnnnnrnnnnnnrnrnrenennne 3 11 9 1 1 Adis ung ne I ICI usitate pe E ttn osea opus oe ien us aot oa imde aes 3 12 3 11 1 Displaying weak echoes dear 3 12 3 11 2 Suppressing noise and mierterence 3 14 Oe Mili Gell uel Er EE 3 14 S ME FRE SOIULIONNCOION ciara T TIE 3 15 3 11 5 9UDDIessIihg el uu cree a Ride d CR Hep c e o ien D
70. from the own ship marker on the horizontal mode display in the direction of ship s bow The tip of the line shows the estimated time of arrival after the chosen ETA time elapses using the current ship s speed ETA is calculated every second considering tilt and detection range This function requires speed input ETA marker ETA marker 5 10 5 MENU OPERATION 9 4 3 SYSTEM SETTING 2 menu description SYSTEM SETTING 2 1 STABILIZER OFF AUTO RETRACTION OFF 5 15kt SPEED ALARM MESSAGE OFF 15 kt SWEEP INDICATOR DOT DEFAULT SETTING YES MAXIMUM ALLOWABLE SPEED IS 15 KNOTS WHILE SOUNDDOME IS BEING RETRACTED IF VESSEL HAS RAPID ACCELERATION CAPABILITIES AUTO RETRACTION SETTINGS OF 10 12 KNOTS ARE MANDATORY TO AVOID CATASTROPHIC DAMAGE TO SOUNDOME ASSY ANY PHYSICAL DAMAGE TO THE SOUNDOME ASSY IS CONSIDERED ABUSE AND IS NOT A WARRANTY ISSUE AV SELECT dk CHANGE MENU END System setting 2 menu SYSTEM SETTING 2 menu description STABILIZER Choose ON to compensate for effects of ship s pitching and rolling Requires Motion Sensor MS 100 or Clinometer BS 704 AUTO RETRACTION Set the speed at which automatic retraction of the transducer is to occur Requires speed input Note The transducer may be retracted at a speed other than the intended one when ship s speed data is erroneous Therefore set the speed considering the accuracy of speed data 5 11 5 MENU OPERATION SPEED ALARM MESSAGE
71. he transducer switch 7 lights steadily and then turn off the power CAUTION Do not exceed 20 knots when operating the equipment and do not exceed 15 knots when lowering or raising the transducer The transducer shaft may become damaged Do not use the equipment for other than its intended purpose Wrongful use of the equipment may result in personal injury or damage to the equipment WARNING LABELS Warning labels are attached to the display transceiver and hull units Do not remove the labels If a label is missing or illegible contact a FURUNO agent or dealer N WARNING A Name Warning Label 1 Code No 002362 remove cover No user serviceable Code No 100 236 230 parts inside BS TRANSCEIVER UNIT N WARNING Name Finger Catch Moving shaft can pinch and cut Warning Label Keep hands clear while operating Type 06 021 4015 0 Lockout power before servicing Code No 100 281 590 CAUTION WORKING WITH THE SONAR OIL Precautions e Keep oil away from eyes Wear pro tective goggles when working with the oil The oil can cause inflammation of the eyes e Do not touch the oil Wear protective gloves when working with the oil The oil can cause inflammation of the skin e Do not ingest the oil Diarrhea and vomiting may result e Keep the oil out of reach of children Emergency procedures e f the oil enters eyes flush with clean water about 15 minutes Consult a physic
72. ho Sounder Display Press the key to display the echo sounder picture Bearing Tilt angle indicator indicator Shows tilt angle of transducer Interference Shows train Tilt anale rejector ON direction g Heading Range mM Transducer status indication Cursor position Minute marker 34 12 343 N Position in latitude 134 34 2143 W osition IN latituae Fish echo longitude CSE 357 i DE E SPD 9 9 kt Course speed CUR e Tide direction tide speed Range GAIN 5 3 Gain setting Bottom echo TVG LEVEL 4 0 TVG level DISTANCE 200 m distance settings LI E Color bar Requires appropriate sensor Depth Water When the tilt angle temperature Range marker is 90 deg the depth Range scale measured by this sonar is displayed inside a rectangle Event marker Typical echo sounder display 4 ECHO SOUNDER MODE 4 3 Choosing the Range The RANGE control chooses the detection display range in 15 settings Choose the range according to either the fish species being searched or the depth desired Each time the control is operated the newly chosen range briefly appears in large characters at the screen top Range is permanently displayed at the top right hand corner Normally the range is set so that the bottom is traced at the lower part of the screen Surface Ech A M Bottom Range concept Default echo sounder mode range settings uw 1 2 3 4 5 jes 7 s 9 10 u 2 B iw 5
73. hoes in the zone so that target lock will not be activated by bottom echoes When a target of red or reddish brown color is detected in the target lock area the target lock indicator blinks and a buzzer sounds to call the operator s attention Outer limit Target lock indicator Inner limit Target lock area 2 21 2 HORIZONTAL MODE When the fish echo is lost the tilt angle is automatically changed as below to continue tracking the echo Tilt changed to search A 10 gt A 10 2A Detection area displayed once again and target lock indicator lights A Tilt angle at start of target lock 5 o turn off the target lock press the TARGET key again The message LOCK END appears for three seconds at the screen top the target lock indicator disappears and operation continues with current train and tilt settings To use the manual echo tracking mode 1 Choose ECHO following the procedure in paragraph 2 12 1 2 Choose LOCK MODE to MANUAL on the HORZ menu 3 Press the TARGET key when a wanted target echo appears The message ECHO LOCK appears along with the target lock indicator Then the transducer train direction is reversed and searching starts with the current tilt angle When a target echo appears the transducer train direction is again reversed automatically the buzzer sounds and the target lock indicator blinks If the fish echo is lost the tilt angle is automatically changed a
74. hoosing a picture speed keep in mind that a fast advance speed will expand a fish school horizontally on the screen and a slow one will contract it 1 Press the FAST SCAN key The following dialog box appears Do the next step within four seconds otherwise the dialog box will be erased ADVANCE 1 4 1 2 11 2 1 2 Press lt or gt FAST SCAN key may also be used to choose a speed The fractions in the dialog box correspond to the number of scan lines produced per transmission For example 2 1 means two scan lines are produced per transmission 3 Press the MENU key to close the dialog box Note that the dialog box is automatically closed if there is no control operation for about four seconds 4 ECHO SOUNDER MODE 4 7 Measuring Range by Cursor Use the cursor to display the range from own ship to the cursor location Use the Omnipad to place the cursor where desired The range to the cursor appears at the upper left hand corner of the screen Range to cursor S Range Cursor How to measure range with the cursor 4 8 Event Marker The event marker functions to mark important locations on the screen and five may be inscribed Each time the EVENT key is pressed the latest event marker is inscribed at the cursor location and all previously entered event markers are shown by the previous event marker When the capacity for event markers is reached the eldest event marker is erased from the scr
75. horizontal expansion display The direction of expansion depends on the train direction as shown in the table below Train center direction Position after expansion Remarks 318 42 Moves to screen bottom For viewing forward 48 132 Moves to left side of screen For viewing starboard side 138 222 Moves to screen top For viewing aft 228 312 Moves to right side of screen For viewing port side Sector marker Tilt angle Cursor position data DAAC ator Range e gt Zz bam 4 Train o position PE BABET gU 34 12 343 N NLH opal Ee 134 34 213 W CSE 35 SPD 9 9 kt DEP 35m TMP 12 3 C Own ship 1 o yip rn ACRES CUR 11 0 marker THE b dert 2 0 kt l PO xs GAIN 53 TVG LEVEL 4 0 DISTANCE 200 m COLOR LL T T TN Cursor Horizontal expansion display 2 18 2 HORIZONTAL MODE 2 12 Target Lock Three types of target lock modes are available Manual reverse The transducer train direction is reserved manually This is the default target lock function setting and it may be used in both horizontal and vertical scan modes Position Tracks stationary position Such as a reef using position data from a navigator Available in the horizontal mode Echo Tracks fish echo either manually or automatically Available in the horizontal mode 2 12 1 Choosing target lock mode Press the MENU key to open the menu Press A to choose MENU and then press lt or gt to choose the HORZ
76. ian e f the oil is ingested see a physician immediately e f the oil contacts skin wash with soap and water Disposal of oil and its container Dispose of oil and its container in accord ance with local regulations For further details contact place of purchase Storage Seal container to keep out foreign material Store in dark cool place The high quality TFT Thin Film Transistor LCD displays 99 99 of its picture ele ments The remaining 0 0196 may drop out or light however this is an inherent property of the LCD it is not a sign of malfunction TABLE OF CONTENTS FOREWORD Pre vii SYSTEM CONFIGURATION WEE Ix 1 OPERATIONAL OVERVIEW rincian a aa 1 1 ET COMPO DSS Ci DUO i n A T tots sa i ens ra aet Ih A d 1 1 1525 e ee EE 1 2 1 Turning tne POWer EE 1 3 LST e ON WEE 1 3 Meee HOW GE Oli EE 1 4 1 4 Raising Lowering the fransducer nennen nnne 1 5 n Me laien dal EE 1 5 1 4 2 Raising the transqauger rsrsrsr yenne oan E eg eegene Seege deed 1 5 1 5 CHOOSING a DIS EE 1 6 1 6 Adjusting Screen Brilliance Panel mmer 1 7 Er FAQVUSUMG Me Gali EE 1 7 123 Basic Menu ODSFatlOL EE 1 8 2 HORIZONTAL MODE eege 2 1 2 1 Operational OVEMVIEW enron E 2 1 2 2 Typical Horizontal Mode Display 2 2 2 9 Ghoosing the Tu Le EE 2 3 24 SGROOSING Sector Widi eenaa r 2 4 2 5 ASAOOSING ran En EE 2 5 20 Choosing Me TIE Angle bereet 2 6 2 6 1 Choosing the tilt angle 0 0 ccc cecc eee c seca ees eeeeeceeeee
77. l mode picture is painted As shown below the search beam is emitted from the soundome at a certain tilt angle The information target echoes obtained by this beam is displayed in 6 or 12 sectors on the screen With training through the entire area a large cone shape area is formed providing continuous pictures on the display 1 Ok echt 6 Training Direction 12 When high speed training is 60 transmissions required to complete full circle selected 30 in high speed training How the horizontal mode picture is painted 2 25 2 HORIZONTAL MODE 2 14 2 Sample echo displays Bottom echoes When the tilt angle is changed the bottom echo illustrated below will appear on the display When the tilt is decreased toward 0 the bottom trace becomes wider and weaker By observing the bottom condition on the display you can prevent damage to the net A Flat bottom Tilt angle 10 to 15 Decreased tilt angle Only half of Y rad vertical beam width captures the bottom B Flat bottom Tilt angle 20 or more Bottom is displayed narrower and in stronger colors when compared to A C Sloping bottom Tilt angle 20 or more Shallow bottom is displayed in a strong color and with a short tail Bottom The deeper sloping bottom echo is displayed in a weak color and with a long tail Bottom echoes 2 26 2 HORIZONTAL MODE Fish schools A fish school appears as
78. ly equal trawling to avoid projections Chapter 2 in size Chapter 3 Display modes 1 OPERATIONAL OVERVIEW 1 6 Adjusting Screen Brilliance Panel Dimmer screen brilliance can be adjusted in nine levels and the panel dimmer backlighting in four 1 Press the BRILL key to open the dialog box for screen brilliance and panel dimmer Do the next step within four seconds otherwise the dialog box will be erased lt gt BRILL 3 MPM NN 1 00 00 0 10 wv A DIMMER 3 M E H Brilliance panel dimmer dialog box 2 Operate lt or gt to adjust screen brilliance 0 is the lowest brilliance 9 the highest The BRILL key may also be operated to adjust brilliance 3 Operate A or V to adjust the panel dimmer 0 is the lowest level 4 is the highest 4 Press the MENU key to register settings and close the dialog box Note that the dialog box is automatically erased if there is no control operation within about four seconds Note The brilliance of a commercial monitor cannot be adjusted with the BRILL key Use the associated control on the monitor 1 7 Adjusting the Gain The GAIN control adjusts the sensitivity of the receiver Normally the control is adjusted so that the bottom echo is displayed in reddish brown mixed with red Initially set the gain between 4 and 6 and then fine tune according to fishing ground etc Too Low Proper Too High How to adjust the gain 1 OPERATIONAL OVERVIEW 1 8 Basi
79. menu Press A or V to choose TARGET KEY Press k to show the following dialog box TARGET KEY ub d Eus REVERSE POS ECHO 5 Press 4 or gt to choose option desired 6 Press the MENU key to register your selection and close the menu 2 12 2 Manual reverse mode The transducer train direction is reversed manually thereby emphasizing possible fish echoes Note This function is inoperative in the echo sounder mode In the vertical scan mode the manual reverse mode is automatically chosen regardless of the setting in paragraph 2 12 1 To activate the manual reverse mode 1 Choose REVERSE following the procedure in paragraph 2 12 1 2 Press the TARGET key to reverse the transducer train direction when a fish school appears REVERSE momentarily appears at the screen top when the key is pressed and then the transducer train direction is reversed 2 19 2 HORIZONTAL MODE 2 12 3 Position mode This mode tracks a stationary position Such as a reef using position data fed from a navigator Note 1 If the TARGET key is operated when using the horizontal vertical scan combination mode the train angle is automatically pointed toward target direction while the target lock marker is displayed When target lock is canceled the previously used train angle is restored Further vertical search See paragraph 5 3 3 is conducted with the vertical scan mode settings of range tilt and display range Note that the hori
80. oose MENU Press lt or gt to choose ES Press W to choose A SCOPE Press lt or gt to open the dialog box A SCOPE OM eee DS ET OFF ON Press to choose ON Press the MENU key to close the dialog box Echo sounder display A scope display EE Ae cud d n D vf Depth water temp display A scope display 4 10 4 ECHO SOUNDER MODE 4 10 3 Gain adjustment Adjust the gain here when there is disparity in gain level between the main and sub windows E I 2 E Press the MENU key to open the menu Press A to choose MENU at the top of the screen Press lt or gt to choose the ES menu Press A or V to choose GAIN ADJUST Press to open the dialog box Press lt or gt to adjust Press the MENU key to register your selection and close the menu 4 10 4 Resolution color RES COLOR sets transfer characteristics of input signal level versus display echo level Echo strength is emphasized in order of CUBE SQUARE LINEAR LOG You can see the characteristics of each by watching the color bar as you change the setting SON ue D T cs Press the MENU key to open the menu Press A to choose MENU at the top of the screen Press lt or gt to choose the ES menu Press A or V to choose RES COLOR Press to open the dialog box Press lt or gt to choose appropriate option referring to the description below LOG Displays weak to strong echoes in their respective lev
81. ooses pulselength to short or long For further details see paragraph 2 11 2 TX RATE The Tx rate may be set between 1 10 in the case of the internal transmitter or an external synchronous signal may be used The higher the number the greater the number of transmissions For operation in shallow waters choose the Tx rate which displays the second reflection from the bottom between the sea surface and bottom For use of an external video sounder or sonar choose EXT INT REJECT Turns the interference rejector on or off For further details see paragraph 3 11 2 AGC Automatically lowers sensitivity against strong echoes such as those from the bottom and large fish schools to emphasize weak echoes such as those from fish close to the bottom AUDIO LEVEL Adjust the volume of the optional speaker 5 1 5 MENU OPERATION 5 2 COM2 Menu 5 2 1 Displaying the COM2 menu 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press lt or gt to choose COM2 G t HORZ VERT ES PRESET SYS DELETING TRACK WHITE MARKER SIG LEVEL COLOR BKGD COLOR A V SELECT dk CHANGE MENU END COM2 menu 5 2 2 COM2 menu description DELETING TRACK Choose ON to delete all ship s track from horizontal and horizontal video plotter displays WHITE MARKER Displays desired echo in white It is useful for discriminating bottom fish from the bottom echo The setting range for the 8 color display is OFF 1 7 and for
82. osal in the USA refer to the Electronics Industries Alliance http www eiae org SAFETY INSTRUCTIONS A WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment Only qualified personnel should work inside the equipment Immediately turn off the power at the switchboard if water leaks into the equipment or something is dropped in the equipment Continued use of the equipment can cause fire or electrical shock Contact a FURUNO agent for service Do not disassemble or modify the equipment Fire electrical shock or serious injury can result Immediately turn off the power at the switchboard if the equipment is emitting smoke or fire Continued use can cause fatal damage to the equipment Contact a FURUNO agent for service Make sure no rain or water splash leaks into the equipment Fire or electrical shock can result if water leaks in the equipment A WARNING Keep heater away from equipment A heater can melt the equipment s power cord which can cause fire or electrical shock Use the proper fuse The fuse in the hull and transceiver units protects them from overcurrent equipment fault and reverse polarity of the ship s mains If a fuse blows replace it with fuse of the same amperage Use of a fuse of different amperage can result in damage to the equipment Retract the transducer before turning off the power Damage to the transducer may result unless it is retracted Wait until t
83. ow the FULL HALF key works 3 7 3 VERTICAL SCAN MODE 3 6 Choosing Sector Center The center direction of the sounding beam in the vertical direction can be changed with the TILT control The setting range is 0 to 180 in increments of 6 Choose the setting which places the sector center in the middle of the detection range Sector center angle set with TILT control In the example display at left the sector center indicator is starboard and the width of the sector is 48 PORT 99 sTBD uy Sector range Sector center indicator Sector of 48 set with SECTOR control Sector center Automatic shifting of own ship position Own ship position on the screen is automatically shifted either rightward or leftward according to the direction of the sector center and display sector width The figure below shows the own ship position has been shifted rightward on the screen to provide the wider view at the port side Sector center 0 to 60 Own ship position shifted to port side Sector center 66 to 114 Own ship position shifted to center Sector center 120 to 180 Own ship position shifted starboard a c5 a 2 a y i e Display sector et T nn IJ w Sector center How automatic shifting works 3 8 3 VERTICAL SCAN MODE 3 Choosing the Tilt Speed The FAST SCAN key chooses the tilt speed that is the stepping angle at which the transducer scans Two choices are avail
84. rased from the screen 3 10 Depth and Horizontal Range Markers The depth and horizontal range markers function to measure the horizontal range and depth to a desired echo Note Depth and horizontal range markers cannot be inscribed on the vertical scan display when it is in the sub window Horizontal vertical scan display Inscribe the markers on the horizontal display to show them in the vertical scan display 1 Operate the Omnipad to place the cursor on the location desired 2 Press the R B key to display the depth and horizontal range markers Horizontal range and depth appear on the screen 3 To erase the depth and horizontal range markers place the cursor on the intersecting point of the depth and horizontal range markers or outside the display and then press the R B key Horizontal range marker Horizontal range Depth Depth marker Depth and horizontal range markers 3 11 3 VERTICAL SCAN MODE 3 11 Adjusting the Picture 3 11 1 Displaying weak echoes clearly Echoes from targets such as the bottom or a fish return to the transducer in order of the distance to them and when their intensities are compared 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 won t be able to judge the actual size of the target from the size of
85. return to the transducer in order of the distance to them and when their intensities are compared 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 won t be able to judge the actual size of the target from the size of echoes displayed on the screen To overcome this inconvenience use the TVG function It compensates for propagation loss of sound in water amplification of echoes on short range is suppressed and gradually increased as range increases so that similar targets are displayed in similar intensities irrespective of the ranges to them The TVG also functions to suppress unwanted echoes and noise which appear in a certain range area on the screen Without TVG Nearer target Proper TVG setting echoes appear Reduce y 1 Echoes of equal in larger size gain for nearby size targets are Noise caused by E areas presented in the strong reflection using same color and size of surface TVG Noise is rejected turbulence How TVG works Note Excessive TVG may eliminate short range echoes 2 14 2 HORIZONTAL MODE To adjust TVG 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press lt or gt to choose HORZ COM1 COM2 ke VERI ES PRESET SYS TVG LEVEL TVG DISTANCE GAIN ADJUST RES COLOR CLUTTE
86. rs data data i vector Par d North marker Sweep indicator M E Depth marker Shows train position s ur n c E oe When depth data is input from in horizontal mode external equipment the depth marker shifts according to depth data If the depth data is greater than the horizontal range the depth marker disappears Typical horizontal mode display With the tilt angle lowered your ship is at the center of the screen The bottom which appears in reddish brown color is displayed as a circle and fish echoes appear within the circle 2 HORIZONTAL MODE 2 3 Choosing the Range The RANGE control chooses the detection display range Choose the range according to either the fish species being searched or the depth desired 15 ranges are available NM SEA SURFACE Au Range indicated ia SC EE on the screen E Ri D How to choose the range Default horizontal mode range settings Normally the range is set so that the bottom is traced at the lower part of the screen like an echo sounder Each time the RANGE control is operated the newly chosen range briefly appears in large characters at the screen top Range is always displayed at the top right hand corner of the screen Note 1 Unit of range measurement may be chosen from among meters feet fathoms passi braza and Hiro Japanese with UNIT on the SYSTEM SETTING 1 menu For further details see UNIT in paragraph 5 4 2 Note 2 Ranges may be freely preset as
87. s below to continue tracking 1 Tilt angle is changed by 10 A 10 A is the tilt angle used when tracking began 2 Tilt angle is changed by 20 A 10 3 If the echo could not be found tracking is cancelled and tilt angle A is restored 4 To quit the target lock press the TARGET key again The message LOCK END appears momentarily 2 22 2 HORIZONTAL MODE 2 13 Horizontal Menu Overview This section presents an overview of the items on the HORZ menu 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press lt or gt to choose the HORZ menu COM1 COM ke VERI ES PRESET SYS TVG LEVEL TVG DISTANCE GAIN ADJUST RES COLOR CLUTTER TARGET KEY REVERSE LOCK MODE AUTO AUTO TILT OFF A V SELECT 4 P CHANGE MENU END HORZ menu Horizontal menu description TVG LEVEL Compensates for propagation loss of sound in water For further details see paragraph 2 11 3 TVG DISTANCE Sets distance at which TVG works For further details see paragraph 2 11 3 GAIN ADJUST Adjust the gain here when there is disparity in gain level between the main and sub windows RES COLOR Sets transfer characteristics of input signal level versus display echo level Echo strength is emphasized in order of CUBE SQUARE LINEAR LOG and you can observe the characteristics of each by watching the color bar as you change the setting LOG Displays weak to strong echoes in their respec
88. sea surface or plankton choose TVG LEVEL and then press b 7 Press 4 or gt to adjust TVG LEVEL considering sea conditions The larger the figure the less the gain over distance 8 Press the MENU key to register your selection and close the menu Wrong Correct Level too high Distance too high Examples of proper and improper TVG 3 13 3 VERTICAL SCAN MODE 3 11 2 Suppressing noise and interference You may encounter occasional or intermittent noise and interference as shown below This is mostly caused by electrical equipment engine propeller noise from own ship or noise from other sonars being operated nearby If interference appears turn on the interference rejector as below to suppress it Interference rejector ON gt Interference In this display MEA interference shows itself every 6 Appearance of interference Press the MENU key to open the menu Press A to choose MENU at the top of the screen Press lt or gt to choose the COM1 menu Press A or V to choose INT REJECT Press to open the dialog box Press lt or gt to choose OFF or ON as appropriate E D MM E Press the MENU key to register your selection and close the menu 3 11 3 Gain adjustment Adjust the gain here when there is disparity in gain level between the main and sub windows Press the MENU key to open the menu Press A to choose MENU at the top of the screen Press lt or gt to choose the VE
89. selection and close the menu Watch a distant fish echo which is approaching own ship Observe the color of the fish echo while adjusting tilt angle so the fish echo is within the sounding beam If the color and size of the echo stay the same as the echo approaches own ship the TVG setting is proper If the echo suddenly becomes smaller the TVG level may be too high 2 16 2 HORIZONTAL MODE 2 11 4 Erasing weak echoes Weak echoes such as interference can be erased from the screen This is useful when you want to observe a fish school echo 1 Press the MENU key to open the menu 2 Press A to choose MENU 3 Press lt or gt to choose COM2 ee HORZ VERT ES SHORT CUT SYS DELETING TRACK WHITE MARKER SIG LEVEL COLOR BKGD COLOR A V SELECT ak CHANGE MENU END COM 2 menu 4 Press A or V to choose SIG LEVEL o Press to open the dialog box SIG LEVEL OFF 1 14 E 5 color display OFF 1 6 OFF 1 14 16 color display OFF 1 14 Signal level dialog box 6 Press 4 or gt to choose echo color to erase Pressing gt erases echoes from weak to strong in ascending order of strength You can see which echo color is erased by watching the color bar 7 Press the MENU key to register your selection and close the menu 2 17 2 HORIZONTAL MODE 2 11 5 Enlarging fish echoes horizontal expansion display Fish echoes may be enlarged by using the horizontal expansion display Press the key to show the
90. t lock indicator 4 To turn off the target lock press the TARGET key again The message LOCK END momentarily appears the target lock marker and the target lock indicator disappear and previously used sector train and tilt settings are restored Also the latitude and longitude indication now shows current position 2 20 2 HORIZONTAL MODE 2 12 4 Echo mode The echo mode tracks a fish school either automatically or manually The default setting is automatic and you can choose automatic or manual with LOCK MODE in the HORZ menu Automatic echo tracking mode The automatic echo target lock function automatically tracks a fish school appearing in the operator chosen target lock area If the tracked fish school goes out of the area in the range direction tracking is suspended until it or a new fish school comes into the area To use the automatic echo tracking mode 1 Choose ECHO following the procedure in paragraph 2 12 1 2 Set LOCK MODE to AUTO on the HORZ menu 3 Press the TARGET key The dialog box below appears at the screen center the message ECHO LOCK appears for three seconds at the top of the screen the target lock area appears in the current train area and the target lock indicator appears at the right hand side of the screen TARGET LOCK AREA 4 gt INSIDE AW OUTSIDE Use the SECTOR and TRAIN controls and the Omnipad to set the detection area Do not include bottom ec
91. tains many air bubbles which attenuate ultrasonic energy making it difficult to sound beyond the wake Own ship Own ship s screw noise Wake produced py Omer SOIP Own ship s wake Own ship s produced when screw noise own ship turned Wake 2 28 2 HORIZONTAL MODE Sidelobe echo false echo An ultrasonic wave is emitted in the direction set by the TILT control main beam 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 Mainlobe echo Sidelobe echo Mainlobe i The bottom echo detected by sidelobe appears at a certain tilt angle when the sidelobe points ver tically Also poor soundome projection may result in a similar false echo Sidelobe echoes Noise and interference When the fishing ground is crowded with many fishing boats the sonar is subject to interference from ultrasonic equipment echo sounder or sonar on other boats as well as those on own ship For instance interference from the sonar on other boats will show itself on the display as in A in the figure below This interference can be suppressed by changing the Tx rate on the COM1 menu Noise from marine life shows itself on the displays as in B in the figure below
92. the heading signal CHECK HULL UNIT Check source of heading signal PRESS R B KEY TO SILENCE ALARM Tilt Error TILT ERROR CPU cannot recognize tilt position signal CHECK HULL UNIT PRESS R B KEY TO SILENCE ALARM Excessive Speed SHIPS SPEED EXCEEDS 15 kt see SPEED ALARM MESSAGE in SLOW DOWN UNDER 15 kt WHEN MOVING paragraph 5 4 3 TRANSDUCER UNIT PRESS R B KEY TO SILENCE ALARM TRANSDUCER REMAINS LOWERED REDUCE SHIP S SPEED AND PRESS T KEY TO RETRACT IT PRESS R B KEY TO SILENCE ALARM 6 5 6 MAINTENANCE TROUBLESHOOTING 6 8 Diagnostics Press the MENU key to open the menu Press A to choose MENU and then press to choose SYS Press W to choose GO TO SYS MENU Press lt to choose YES Choose TEST and then press gt to start the test The lamps above the XDR switches light alternately every second while the test display is shown In a few moments after pressing the results of the test appear OF CE Ces INP 2 MAIN PROGRAM NO 0650109 PANEL PROGRAM NO 0650104 0 ROM OK TX FREQUENCY 180kHz HAM OK ROLL 10 VRAM OK PITCH 10 NMEA OK TRAIN TILT MOTOR TEST COUNT 1 TRAIN PULSES NG PULSES 1080 0 319 313 454 449 REMOTE CONTROL Item currently being tested Requires special plug to test Nothing displayed when plug is not connected Program Version No Test results To quit the test press the MENU key three times 6 6 6 MAINTENANCE
93. tive levels This is the default setting and is suitable for general use LINEAR Downplays the weak echoes when compared with LOG Effective for suppressing weak echoes such as plankton SQUARE Strong echoes are emphasized more than in LINEAR CUBE Strong echoes are emphasized even more than in SQUARE 2 23 2 HORIZONTAL MODE CLUTTER Low intensity echoes often caused by sediments in water are painted on the screen as a large number or random dots This noise can be suppressed The higher the number setting the weaker the echoes which are erased TARGET KEY Chooses target lock function among reverse position and echo For further details see paragraph 2 12 LOCK MODE Chooses how to track fish echo in echo target lock automatically or manually For further details see paragraph 2 12 AUTO TILT Turns automatic tilt on or off The choices are 2 4 6 and 10 Automatic tilt adjusts the tilt angle in the following sequence B B A gt B 5 B A gt B 5 B A gt B gt BHA B Current tilt angle A Auto tilt setting For example the tilt angle is 30 and the automatic tilt setting is 4 Then the tilt angle is changed in the following sequence 30 26 30 34 5 30 26 gt 30 gt 34 2 24 2 HORIZONTAL MODE 2 14 Interpreting the Horizontal Display This section provides information necessary for interpreting the horizontal display 2 14 1 How the horizonta
94. unction key programmed for VER SEARCH to get a cross sectional view of the vertical plane This mode is useful for evaluating fish school concentration and location of the targeted fish school or for navigation purposes 411 45m A 34 13 E R 40 rad Id 7 CSE SPD 784 N 176 E 82 1 ik e e An addi Sin i Fish ONIN Le ay ah if Uf it i Wo School aif rg Les SI uut ur eun aN 2 8 Tva LEVEL 4 O DISTANCE 200m COLOR 45 E The vertical search picture is drawn using the following specifications Horizontal range Same as set on horizontal mode Vertical range Same as Set on horizontal mode Train marker Train angle at the moment function key is turned on Vertical scan display range 0 90 degrees own ship position shifted leftward 5 7 5 MENU OPERATION 54 SYSTEM Menu This menu provides items which may be set according to operator s preference 5 4 1 Displaying the SYSTEM menu Press the MENU key to open the menu Press A to choose MENU and then press gt to choose SYS Press V to choose GO TO SYS MENU Press lt to choose YES pue oe SYSTEM MENU SYSTEM SETTING b RANGE SONAR MODE RANGE VERTICAL MODE RANGE E S MODE RANGE TRACK MODE COLOR PALETTE LANGUAGE SYSTEM BACKUP LOAD BACKUP DATA Adjusted at installation See installation manual See Chapter 6 DEMO MODE DEFAULT W SELECT MENU DISPLAY MENU END System menu
95. utput power is reduced rather than when the gain is decreased 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press lt to choose the COM1 menu COM2 HORZ VERT ES PRESET SYS TX POWER PULSELENGTH TX RATE INT REJECT AGC AUDIO LEVEL A V SELECT 4 P CHANGE MENU END COM 1 menu 3 Press A or V to choose TX POWER and then press gt to show the TX POWER dialog box TX POWER MIN 4 Press to choose MIN For long range detection be sure to return the setting to MAX 5 Press the MENU key to register your selection and close the menu 2 13 2 HORIZONTAL MODE 2 11 2 Suppressing bottom tail As described earlier fish schools near the bottom are sometimes difficult to detect because you have to discriminate fish echoes from the bottom reflections To discriminate fish echoes near the bottom choose the short Tx pulselength on the COM1 menu to decrease the tail of bottom reflections 1 Press the MENU key to open the menu 2 Press A to choose MENU and then press lt to choose the COM1 menu 3 Press A or V to choose PULSELENGTH and then press gt to show the PULSELENGTH dialog box PULSELENGTH LONG SHORT 4 Press to choose SHORT For long range detection be sure to return the setting to LONG 5 Press the MENU key to register your selection and close the menu 2 11 3 Displaying weak echoes clearly Echoes from targets such as the bottom or a fish
96. where space is limited e nterface IF 8000 permits use of a commercial monitor in lieu of FURUNO supplied display unit e Automatic pulselength switching for optimum performance in short and long ranges e Eight operational modes Horizontal Horizontal Expansion Vertical Scan Echo Sounder Horizontal Vertical Scan Horizontal History Horizontal Video Plotter and Horizontal Strata e Automatic retraction of transducer at operator chosen ship s speed between 5 and 15 knots e CUSTOM MODE keys provide one touch setup of the equipment or short cut key function e Tracing of ship s track with connection of position fixing equipment GPS etc e One of the echo strengths may be displayed in white to enhance the specific echo level e he Vertical Search feature provides a cross sectional view of the vertical plane which is useful for evaluating fish school concentration vil FOREWORD Usage Precautions e The Motion Sensor MS 100 compensates for ship s pitching and rolling However it does not compensate for load unbalance Use Clinometer BS 704 if compensation for load unbalance is required If the equipment will not be used for a long time shut off the power to it at the mains switchboard to prevent battery discharge If the soundome is to be operated while the ship is dry docked set the transmitter output power to MIN imum on the COM1 menu Damage to the train tilt assy may result if the transducer is operate
97. zontal range settings of the vertical scan mode cover the horizontal mode range Note 2 This mode requires position data When there is no position data the message NO POSITION DATA appears for five seconds and tracking is automatically cancelled Check the navigator Note 3 HORZ RANGE on the VERT menu cannot be adjusted while the position mode is active Beeps sound when you attempt to change its setting Note 4 The tilt angle must be less than 75 degrees to use this feature To use the position mode 1 Choose POS following the procedure in paragraph 2 12 1 2 Use the Omnipad to choose the location to track 3 Press the TARGET key The message POS LOCK appears momentarily at the screen top the target lock marker is displayed at the cursor position and the target lock indicator appears at the top right hand corner of the screen while tracking with position data from external equipment is occurring If the position goes out of the display area target lock is automatically cancelled and the target lock indicator and target lock marker disappear The train range is fixed at 48 and train and tilt are automatically adjusted to track the position selected The SECTOR TRAIN TILT RANGE and FULL HALF controls are inoperative during tracking When you attempt to operate them the message TARGET LOCKING NOW appears accompanied by the aural alarm Target lock indicator Target lock marker Targe

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