Furuno MODEL CSH-73 - Manuals

iv SELF TESTS Opening the Self Test Menu ................................................................................................ 11-1Self Test Description ............................................................................................................ 11-2Interface Unit CS-120A ...

v FOREWORD A Word to CSH-73 Owners Congratulations on your choice of the FURUNO CSH-73 Color Scanning Sonar. We areconfident you will see why the FURUNO name has become synonymous with quality andreliability. For over 40 years FURUNO Electric Company has enjoyed an enviable reputation for qual-ity m...

vi System Configuration STANDARD OPTION REMOTE CONTROL BOX CSH-116 DISPLAY UNIT CSH-731 REMOTE DISPLAY CSH-106 SUB DISPLAY CSH-736 STEP-DOWN TRANSFORMER PT-400 INTERFACE UNIT CS-120A IE/S NTERFACE UNIT VI-1100A FNZ JOINT BOX CS-170 TRANSCEIVER UNIT CSH-710 SHIP’S MAINS100 VAC, 1 φ , 50/60 Hz HULL UN...

1-1 CONTROL DESCRIPTION Control Layout on Display Unit and RemoteControl Box RECALL MEMO HIST E/S NORM - + F3 F2 F1 ON OFF + - GAIN + - RANGE TILT WIDTH AUTO TILT WIDTH AUTO TRAIN EVENT1 NET COURSE FISH ESTI- MATE1 EVENT2 TARGET LOCK OFF- CENT ESTI- MATE2 DIM CONT BRILL AUDIO POWER TRANSDUCER PUSH-O...

1-2 Main Panel RECALL MEMO HIST E/S NORM - + F3 F2 F1 ON OFF + - GAIN + - RANGE TILT WIDTH AUTO TILT WIDTH AUTO TRAIN EVENT1 NET COURSE FISH ESTI- MATE1 EVENT2 TARGET LOCK OFF- CENT ESTI- MATE2 DIM CONT BRILL AUDIO POWER TRANSDUCER TRAIN Figure 1-2 Main panel Main panel control description l o r t n...

1-4 Sub Panel 1 RECALL MEMO HIST E/S NORM F4 F5 F3 F2 F1 ON OFF POWER TRANSDUCER CARD REPLAY COLOR NET REPLAY TX HELP END MENU MEMORY CARDDRIVE CARD EJECTBUTTON Figure 1-3 Sub panel 1 Sub panel 1 control description Control Function MENU Opens/closes the menu. END • When the menu is displayed it ter...

1-5 Sub Panel 2 (data setting window) SIGNAL DELETE MK TVG•TX ES SONR•BEAM AUTO ALM•AUDIO NEAR 7 MEDIUM 8 FAR 9 CYCLE 7 PL 8 OUTPUT 9 TVG TX + + + + + + – – – – – – h g OPERP-SET (TOGGLE) Setting change keysChange control setting. Item selection keysSelect item. OPER P-SET keyOpens/closes data setti...

1-8 Remote Control Box 1 2 3 DISP SELECT DATA d c d EVENT TGT LOCK ESTIMATE 1 NET COURSE FISH OFF- CENT TX 1 2 3 4 FUNCTION 5 – + RANGE + – GAIN SHOOT MEMO RECALL AUTO AUTO VERT SCAN TILT TRAIN SCAN DEPTH Each press displays water temperature or depth at screen center for about five seconds. Turns o...

2-1 OPERATIONAL OVERVIEW Turning the Power On/Off Turning the power on Press the ON key on the main panel. The lamp above the keyshould light. If it doesn’t press the TX switch on sub panel 1. Turning the power off Retract the transducer with the c key and then press the OFF key on the main panel. N...

2-2 Selecting a Display Mode The CSH-73 provides three display modes: normal sonar pic-ture, echo sounder (E/S) combination, and history display com-bination. Those modes may be selected with the NORM, E/Sand HIST keys. Table 2-1 Display mode description Mode Description The sonar picture appears ov...

2-3 Selecting a Display Range Operate the RANGE control to select a display range. The rangeselected appears at the top center of the screen. Setting the Tilt Angle The tilt angle shows the direction to which the sound wave isemitted. When the sound wave is emitted horizontally, the tiltangle is sai...

2-4 Adjusting the Gain The GAIN control adjusts receiver sensitivity (gain). Adjust itso fish echoes are clearly displayed with minimal noise on thescreen. Too high a setting not only displays excess noise andmakes it difficult to discriminate wanted echoes but also causesseabed echoes to be painted...

3-1 FINE TUNING THE PICTURE This chapter provides the information necessary for tuning thesonar picture. All operations are performed on sub panel 2 (datasetting window). Sub Panel 2 Figure 3-1 Display unit Eliminating Unwanted Feeble Echoes Echoes from targets such as seabed and fish return to the ...

3-2 100 m Near Far Med 400 m 25 m Figure 3-2 Principle of TVG The TVG is also used to suppress unwanted echoes and noisewhich appear in a certain range area on the screen such as seasurface reflections and cruising noise. To set TVG properly, dothe following: How to adjust TVG 1. Open sub panel 2. 2...

3-3 Suppressing Seabed Tail AGC (data setting window: SIGNAL, SIGNALPROCESS) The AGC functions to automatically reduce the receiver gainonly against strong echoes such as the seabed or a large fishschool. Since weak echoes remain unaffected, a small fish schoolbecomes easier to detect. Adjust it so ...

3-4 Suppressing Seabed and Sea Surface Reflections inShallow Waters Data setting window: TVG•TX, OUTPUT In shallow fishing grounds with hard or rocky bottom, seabedreflections often interfere with wanted fish echoes and they cannot be eliminated sufficiently with the aforementioned TVG andAGC contro...

3-5 Interference from other sonar Cruising (propeller) noise of own ship Cruising noise from other boat Figure 3-4 Forms of interference Identifying noise source To eliminate noise effectively, you should first identify the noisesource as follows: 1. Turn off the TX switch and operate all on-board e...

3-6 Inter-ference Figure 3-5 How CYCLE works Note: When the sonar is used in shallow water with the rangeset between 60 m and 200 m and Tx cycle at “9”, seabed reflec-tions caused by the 2nd-to-the-last transmission may appear onnear ranges. Reduce the Tx cycle setting to “2” or “3” to sup-press the...

3-7 Adjusting Beamwidth Beamwidth can be adjusted at SONR•BEAM, BEAM on thedata setting window. Table 3-1 Beamwidth adjustment menus Menu Application HOR Set to "0" for normal use. The higher the setting thenarrower the beam. This control may be usedtogether with the AGC and NL controls to s...

4-1 MARKS AND DATA Marks, Data and Display Mode Normal display mode Figure 4-1 Marks and data appearing in the normal displaymode

4-2 Figure 4-2 Marks and data appearing in the normal displaymode w/text Figure 4-3 Marks and data appearing in the echo sounderconbination display mode Normal display mode w/text Echo sounder combinationdisplay

4-3 Figure 4-4 Marks and data appearing in the history displaymode Permanently Displayed Marks and Data Range Data R Shows the range scale set with the RANGE control. Tilt Angle Data T ˚ Train Angle Data R0 Mark/Data Description The tilt angle appears below the range. The tilt angle can be changedin...

4-4 Mark/Data Description Shows own ship's present position. The direction of the arrow showsship's heading. This mark moves with ship's movement in the truemotion mode*. On all other modes it is fixed at the screen center. Own Ship's Mark When the CSH-73 is connected to a gyrocompass the mark is ca...

4-6 Ship's Track Mark* With gyrocompass or speed log connection, own ship's track is plotted by a solid line. The track length to display can be selected among 5, 10, 20 and 40 times the range.When the length of the line exceeds selected value the oldest part of the track is erased. Nav Data* Own Sh...

4-7 Mark Description Target Lock Mark* The target lock mark automatically tracks the fish school selectedby the operator. This function requires speed and gyrocompass inputs. Net Shooting Mark Net Shooting Data Press the SHOOT key at the instant you shoot the net to display thenet shooting mark on t...

5-1 USER MENU OVERVIEW Many functions are carried out through the menu system, whichconsists of the USER, SYSTEM, DATA SET and INITIAL SET/DATA menus. The menu you will use most often is the USERmenu. Menu How to open USER Press MENU. SYSTEM Press c and MENU together. DATA SET Press d and MENU toget...

5-2 2. Operate the arrow keys in sub panel 1 to select a menu. As you move through the menu, each item, initially shown asblue on gray, reverses to gray on blue to show selection. Forexample, select the HIST DSP/GRPH menu. 3. Press the MENU key to display menu selected. USER MENU Select item with dc...

5-3 USER Menu Description Table 5-1 User menu description Menu Menu Item Description CARDUTILITY List Lists contents of memory card. Save Saves control and menu settings to memory card. Delete Deletes data from memory card. Initialize Formats memory card. CARD ECHODAT Save Saves echo inside estimate...

6-1 FUNCTION KEYS Similar to the quick dialing function on a telephone, the fivefunction keys (F1–F3) on the main panel record control and menusettings and replay them back exactly as programmed. The itemsyou can program are gain, display mode, TX ON/OFF, USERmenu, SYSTEM menu, DATA SET menus and da...

6-2 FUNCTION KEY REGISTER 1 USER MENU Customized settings are registered to FUNCTION keys. Select key number with ↑ ↓ key and press MENU key. Press END key to return to sub menu. Figure 6-2 REGISTER menu 5. Press the up or down arrow key in the sub panel 1 to select the function key to program, then...

6-3 Function Key Fine Tuning Fine Adjustment Item -4 -3 -2 -1 0 1 2 3 4 5 TVG Near -3 -2 -1 0 0 1 1 2 3 4 TVG Mid -3 -2 -1 0 0 0 1 1 2 3 TVG Far -3 -2 -1 0 0 0 0 1 1 2 Tx Cycle 0 0 0 0 0 0 0 0 0 0 Tx Beamwidth -3 -2 -1 0 0 0 0 0 0 0 Tx Power -2 -1 0 0 0 0 0 0 0 0 Saving Function Key Settings to a Me...

7-1 ADVANCED LEVEL OPERATION Finding Fish School Center When you want to find the center depth of a fish school, use theauto tilt function, which automatically scans the tilt angle withinthe selected width. Table 7-1 Automatic scan range at menu setting WIDE of OTHERsub menu in the INIT SET/TEST men...

7-2 Tracking a Fish School (target lock) Target lock, which requires speed and heading inputs, automati-cally tracks an important fish school so that you wonít lose sightof it on the display screen. Two types of target lock are avail-able: Target Mark or Fish. One may be selected on the SYS-TEM menu...

7-3 Target lock mark appearance The size and thickness of the target lock mark indicates fish speedand tracking status, as shown below. Meaning Target lockmark appearance Mark size indicatesrelative speed. FastMediumSlow (More than 5Tx cycles)(Up to 3 Txcycles) Mark thickness showstracking status. F...

7-4 4. Select Tracking Method, and then press the [MENU] key. 5. Select method desired. 6. Press the [END] key several times to close the menu. Tracking target lock mark 1. Operate the trackball to place the trackball mark on the fish school you want to track. 2. Press the [TARGET LOCK] key to light...

7-5 Setting target lock conditions 1. Open the sub panel 1. 2. Press the [MENU] key while pressing and holding down the down arrow key in sub panel 1. 3. Select TARGET LOCK with the arrow keys. 4. Press the [MENU] key. SYSTEM MENU TARGET LOCK Tracking Method TGT Mark Fish Track Echo Color 8 Choose w...

7-6 Description of target lock items TrackingMethodSets target lock function: target lock mark, fish or automatic. Track Echo Color Sets minimum echo signal level to track. A fish school whosesignal level is above the level set here is tracked. Fish Speed Limit Sets fish speed at which target lock i...

7-7 Detecting Fish Schools Aurally Sometimes you may be preoccupied with other tasks and unableto concentrate on watching the sonar picture. In such cases itwould be a good choice to use the audio function. This functionenables you to monitor echoes from fish schools and seabedthrough the built-in s...

7-8 The Fish Alarm The fish alarm sounds an audible alarm when a fish echo abovea preset strength enters an alarm zone. You set parameters forthe fish alarm at ALM on the data setting window. ON/OFF: Turn alarm on or off.Level: Set echo strength level which will activate the alarm. Zone: Set alarm z...

7-9 Relocating Fish School for Easy Observation 1. Operate the trackball to place the trackball mark on the posi- tion where you want to relocate the own ship mark. 2. Press the OFF-CENT key. 3. To move the own ship mark back to the screen center, press the OFF-CENT key again. Own shipmark Place tra...

7-10 Comparing of Fish School Concentration You can get an estimate of the volume of two fish schools byusing the two ESTIMATE keys. 1. Operate the trackball to place the trackball mark on a fish school, and then press the ESTIMATE 1 key. The estimate mark appears on the fish school. Relative vol-um...

7-11 Measuring Fish School Speed To ensure a good haul, it is important to estimate the directionand speed of the fish school before shooting the net. You can dothis with the FISH key. If the tidal current data is used togetherwith fish speed data, you can determine the timing of the netshooting mor...

7-12 Note 3: Each time the FISH key is pressed the latest fish markand ship’s speed mark change in the sequence shown below: Fish key pressed once: Fish key pressed twice: Fish key pressed three times: Fish key pressed four times: ↓ ↓ X → ↓ X ↓ ↓ X → ↓ → The Event Mark The event mark is useful for f...

7-13 Entering an event mark 1. Set the trackball mark where you want to place an event mark (latest event mark). 2. Press an EVENT key. The horizontal range, depth and bear- ing to the event mark appear at the bottom left corner of thescreen. (35) Stored when EVENT key is pressed. A B → 234: Horizon...

7-14 True Motion Display The relative motion display places the own ship mark at the screencenter, and echoes from fish and the seabed move on the screenrelative to own ship’s movement. This means that even whenthe ship is dead in water, fish echoes move on the display. In the true motion display, h...

7-15 Plotting Net Location Mark Before shooting net, you will decide the shoot timing consider-ing the water current direction, distance to fish school and mov-ing direction of the fish school. Use the net location mark as aguide to decide the timing. This function requires speed and heading inputs....

7-16 Setting Distances Between Net Sonde Transmitters To accurately display the net shooting mark and net sonde markposition, the distance between transmitters must be correctly set.This is done on the DATA SET menu. R0: Length of net from its end to transmitter1 in meters.R1: Length of net between ...

7-17 Observing Net Behavior With net sonde connection you can observe net behavior afterthe throwing of the net, on the echo sounder combination mode.Accurate depiction of net sonde position depends on proper set-ting of the distances between net sonde transmitters. You can setthose distances on NET...

7-18 Port/Starboard, Horizontal Slice Displays The port/starboard display or horizontal slice display may bedisplayed by pressing the [HIST] key. The display shown de-pends on the setting of “HIST DSP/GRPH” in the USER menu. Port/Starboard display The port/starboard display takes echoes along the be...

7-19 Horizontal slice display 120 degrees of the picture in the horizontal direction is shownfor a given depth (D) in the horizontal slice window at the bot-tom of the display. The area to display may be selected with the[R/B] key. Range Mark Horizontal Slice Width D Bearing Mark Range Mark Color Ba...

7-20 Turning Marks, Data On/Off You can turn marks and data on or off through the data settingwindow or the USER menu. Turning marks on/off through the data settingwindow (Sub Panel 2) Select DELETE MK to delete the following marks: Event Mark 1 Event Mark 2 Fish Mark Own Ship Mark Ship's Track Each...

8-1 SAVING, REPLAYING PICTURE You can save either the whole screen or the echo inside the esti-mate mark to the internal memory or a memory card. e v a S o t a t a D d o h t e M g n i v a S o t g n i v a S , s k r a m , e r u t c i p e l o h W a t a d c i r e m u n a h p l a d n a y e k O M E M g n ...

8-2 Saving the Picture 1. Press the MENU key to display the USER menu. 2. Select SAVE PICTURE. 3. Select item to save: Whole: Saves whole picture to memory card. Est MK: Saves echo inside the estimate mark to internal memory. (About 20 pictures can be saved.) QK Save: Saves whole screen to the inter...

8-3 Saving Net Shooting Data How net shooting data is saved The unit starts accumulating net shooting data when the SHOOTkey is pressed. When net shooting is concluded by pressing theSHOOT key again, the echo inside the estimate mark and othernet shooting data are saved to the internal memory. Note ...

8-4 Replaying Saved Data Whole picture or echo inside estimate mark 1. Press the RECALL key (on the main panel). 2. Press the right or left arrow key in sub panel 1 to select item to replay. The left arrow key selects older data (for example,data in memory card); the right arrow key newer (for ex-am...

9-1 INTERPRETING THE DISPLAY Seabed Echoes When the tilt angle is set at 90 degrees with the sector centerfaced dead ahead, the pictures illustrated below will appear onthe screen. The seabed echo is represented on the screen as athick line which realistically shows the bottom contour. Whenthe tilt ...

9-2 Fish Schools A fish school appears as a mass of echoes on the screen. Thecolor of the mass shows the density of the fishes and the size ofthe mass how they are distributed. In the following figures, thesame fish school is observed with two different tilt angles. Fromthe left figure, the operator...

9-3 Sea Surface Reflections As ultrasonic pulses at both edges of the 180˚ sector beam arealways emitted horizontally along the sea surface regardless ofthe tilt angle setting, sea surface reflections appear as a thickline extending across the own ship mark. When the sonar is usedwith a narrow tilt ...

9-4 False Echo by Sidelobe An ultrasonic wave is emitted only in the direction set by theTILT lever, however there are some emissions outside the mainbeam. These are called sidelobes. The energy of the sidelobe isfairly weak but when the water is comparatively shallow and thebottom is rocky and hard...

10-1 WARNINGS Overvoltage Warning If the input voltage to this unit rises above 125 VAC, the over-voltage detection circuit activates, an alarm sounds and the mes-sage OVERVOLTAGE appears at the screen center. If this occurs, retract the transducer, turn the power off and checkthe ship’s mains volta...

10-2 Breaker Power Supply Unit F Photo No.1580 Hull Unit MainShaft Hand Crank Figure 10-1 How to manually raise the transducer

11-1 SELF TESTS The CSH-73 has various self tests to check it for proper opera-tion. If a test reveals equipment malfunction do not attempt tocheck inside the equipment. There are no user serviceable partsinside the equipment. Do not work inside theequipment unless totallyfamiliar with electrical ci...

11-2 Self Test Description Single test The ROM, RAM and other devices of the dis-play unit are checked once. Control is returnedto the SELF TEST menu when the test is com-pleted. Figure 11-2 Single test Continuous test The devices of the display unit are checked con-tinuously. Figure 11-3 Continuous...

11-3 Panel test This test checks the keys of the main and sub panels and theremote control box. Press and release each key. Its on-screenlocation should display “1” when the key is pressed and “0”when released. To escape from the test reset the power. PANEL TEST / X = Y = Figure 11-4 Panel test Colo...

11-4 Gray test This test checks for screen distortion. To escape from the testreset the power. GRAY TEST S ¤ S ¤ Figure 11-6 Gray test SIO test This test checks for proper communication between the displayunit and transceiver unit, and requires a jumper plug. To escapefrom the test reset the power. ...

11-5 Interface Unit CS-120A Self Test 1. Open the cover of the interface unit. 2. Find DIP switch DP-1 on the lone circuit board. Turn switch #6 on to start the self test. The results of the check appear onthe digital display beside the DIP switch. 3. Turn the DIP switch off after completion of the ...

12-1 MAINTENANCE Do not work inside theequipment unless totallyfamiliar with electrical circuits. Hazardous voltage which willcause death or serious injury exists inside the equipment. DANGER Display Unit Maintenance Keep magnets and cassette tapesaway from the display unit. Handle the equipment wit...

12-2 Hull Unit Maintenance HULL UNIT Apply MOLYTONE grease#2 every six months. Dry dock ship and cleantransducer face yearly.Apply single coat of "MARINE STAR 20 Mod(Red-N)" anti-foulant totransducer face to keepmarine life off the transducer. Raise transducer and coat mainshaft with DAPHAEC...

13-1 SPECIAL MENU DESCRIPTION SYSTEM Menu Description The SYSTEM menu can be displayed by pressing MENU and c together. For help, press the HELP key. u n e M m e t I n o i t p i r c s e D L A N G I S S S E C O R P g n R o h c E h t o o m S e g n a r n i l e v e l g n i h t o o m s o h c e s t c e l ...

13-4 DATA SET Menu Description The DATA SET menu can be display by pressing MENU and d together. For help, press the HELP key. u n e M m e t I n o i t p i r c s e D E V R U C R O L O C 1 r a n o S 2 r a n o S 1 r e d n u o S o h c E 2 r e d n u o S o h c E e g n a h c y a m u o y s e c i v e d e s e...

13-7 INIT SET/TEST Menu Description The DATA SET menu can be display by turning on the powerwhile pressing MENU key. The HELP key provides menu operating information. u n e M m e t I n o i t p i r c s e D J D A G N I D A E H t s u j d A g n i d a e H l l u h n o k r a m D A E H f o e l g n a n o i t...

A-1 MENU TREE USER Menu Event Mark 1 Event Mark 2 Fish Mark On Track Data Text Window ES Window Range/Bearing Heading Mark Range Rings Bearing Scale Auto Scan Width Auto Train Width Ship's Track Net Movement Plot Fish MK Connect Fish Tracking MK Fish Track Plot w/Current Vec w/Current Vec w/Current ...

A-2 DATA SET Menu Setting range: 200-1000 m ON OFF Setting range: 0-3000 m Setting range: 0-1000 m Execute Execute Execute Execute Execute Execute Execute CHANGE COLOR DATA SET MENU Sonar 1 Sonar 2 Echo Sounder Marks Menu Execute Execute NET SHOOT PLAN Net Diameter Tilt Interlock COLOR CURVE Sonar 1...

A-4 SYSTEM Menu 25log 30log 35log 40log FAR TVG Far TVG Curve SYSTEMMENU Setting range: 0 to 3 SIGNAL PROCESS Smooth Echo - - - Rng Smooth Echo - - - Cir Delete Color Setting range: 0 to 3 Setting range: 1 to 10 1.3R 1.6R TM DSP TM Display Range 32 Cmps 360 ° True BRG READOUT Course Current Data Eve...

SP-1 SPECIFICATIONS Model: CSH-73- M 150 (Freq.: 150 kHz)180 (Freq.: 180 kHz) 1. GENERAL (1) Range, TX Cycle, Pulselength c i s a B e g n a R ) m ( e g n a R e l c y C X T ) c e s ( h t g n e l e s l u P ) c e s m ( r e t n e c f f \ F O " F F O " " N O " r e t n e c f f O 5 7 5 7 - ...

SP-3 *Own ship’s position (latitude/longitude)Net sonde data (net depth, distance to seabed, water temperature,sinking speed of net) (6) Features Custom mode, interference rejector, afterglow, noise limiter, deletecolor, memory card (save and recall of picture, echo inside estimatemark and net shoot...

IN-1 INDEX A AGC ................................................................ 3-32AGC .............................................................. 3-3AUDIO ........................................................... 7-6AUTO TILT .................................................... 7-1AUTO TRAN...