Furuno CH-37 - Manuals

iv 3.9 Bottom/3D Menu Operation ......................................................................................... 3-83.10 Interpreting the Display .............................................................................................. 3-93.11 Vertical Fan Mode Indications ...............

v FOREWORD Congratulations on your choice of the FURUNO CH-37 ColorSector Scanning Sonar! We are confident that you will enjoymany years of trouble-free operation with this fine piece of equip-ment. For over 40 years FURUNO Electric Company has enjoyed anenviable reputation for quality and reliabili...

vi SYSTEM CONFIGURATION DISPLAY UNITCH-370 NOTE 1: Two sets of rectifiers are necessary for AC mains.NOTE 2: DC ship's mains only. For AC ship's mains, the power is supplied directly from the rectifier unit to the trans- ceiver unit. OPTIONAL SUPPLY STANDARD SUPPLY LOUDSPEAKERSC-05WR REMOTE CONTROL ...

vii MENU TREE [MENU] key SONAR BOTTOM/3D E/S TX RATETX PULSE LENGTHTX OUTPUT POWERTX EXT SYNCIRSTABILIZERCOLORRES. COLOR TVG (LEVEL)TVG (TIME)BEAM WIDTHAUTO TRAIN SECTORVERT. ECHO OVERLAY3D VIEW SCALETIME SCALE RANGESHIFTGAINN.L.IRADVANCE SPEEDRES. COLOR DUAL DUAL MODENET MOUTH SHIFTNET MOUTH WIDTHN...

1-1 OPERATIONAL OVERVIEW 1.1 Control Description Main panel PWR O TRANSDUCER FULL HALF EVENT ENTER 1 2 3 CUSTOM MODE CH-37 R/B MODE TRAIN SECTOR TILT RANGE + 0 2 4 6 8 10 GAIN Switches on and off the entire system. Selects display mode (from left-hand position): Normal Sonar Mode or Normal Sonar Mod...

1-2 Sub panel 0 10 LEVEL 0 10 TIME 0 10 DIMMER 0 10 BRILL 0 10 NL 0 10 AUDIO TVG HUE E/S FAST SCAN TRACK V:H RANGE AUTO TRAIN DEGAUSS BOTTOM MODE MENU MENU Sub-panel 1 Sub-panel 2 Function Description TVG LEVEL controls the receiver sensitivity to eliminate surface noise, which may mask shallow targ...

1-3 1.2 Turning the Power On/Off Power on Press the PWR switch on the main panel. The lamp above theswitch lights to show that power is turned on. Power off Retract the transducer with the g key on the main panel. The lamp above the switch lights while the transducer is being raisedand goes off when...

1-4 1.5 Presentation Mode Five presentation modes are available with the MODE control:Normal sonar, Normal sonar + combination, Expanded sonar,Vertical fan mode or Vertical fan mode + combination and 3Ddisplay mode (front and slant perspective views). Mode Presentation Normal sonar mode Normal full ...

1-5 Mode Presentation Vertical fan mode A vertical section of underwater conditions (half-circle area) appears on the entire screen. 3D display (slant perspective view) Display contents are same as front perspective mode except the per-spective is different. This mode may be turned on in the SYSTEM ...

1-6 1.6 Background Color The background color is available in deep blue, blue or black,with the HUE key. 1.7 Degaussing the Screen The screen is automatically degaussed at the interval selectedon the SYSTEM SETTING menu. However, when the pictureor picture color appears to be distorted, manually deg...

2-1 SONAR MODE 2.1 Typical Operating Procedure PWR O TRANSDUCER FULL HALF EVENT ENTER 1 2 3 CUSTOM MODE CH-37 R/B MODE TRAIN SECTOR TILT GAIN RANGE - + 0 10 LEVEL 0 10 TIME 0 10 DIMMER 0 10 BRILL 0 10 NL 0 10 AUDIO TVG HUE E/S FAST SCAN TRACK V:H RANGE AUTO TRAIN DEGAUSS BOTTOM MODE MENU MENU 0 2 4 ...

2-2 2.2 Selecting Range The RANGE control selects the detection (display) range. Se-lect the range according to either the fish species beingsearched or the depth desired. Normally it is set so that thebottom is traced at the lower part of the screen (like an echosounder). SEA SURFACE Range indicate...

2-3 2.3 Selecting Sector, Sector Stepping Sector width Sector means the width of the transducer training. The SEC-TOR control selects the training (display) area among six posi-tions. In the full circle mode (360 ° ) the direction of training is clockwise only. Table 2-2 Transducer training sector M...

2-4 2.4 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 said to be 0 ° and when emitted vertically, 90 ° . To set a tilt angle, operate the TILT control. Watch the tilt angleindication at the t...

2-5 Case 1 Case 2 Case 3 Fish School a Bottom Case 1 Fish school a Bottom Case 2 Fish school a Fish school b Case 3 Fish school b Fish school b Figure 2-4 Fish echo and tilt angle Points to consider • Normally, a vertically distributed fish school is a better sonar target than the bottom, because it...

2-6 However if the sea is not calm enough, they will become domi-nant and interfere with observation of wanted echoes. To mini-mize these sea surface reflections and to search surface fishschools effectively, the tilt angle is usually set between 5 ° and 6 ° so the upper portion of the beam becomes ...

2-7 2.5 Adjusting Gain Most equipment malfunctioning claims result from impropersetting of switches and controls. For example, fish, fish habitator outcrop can not be readily detected by merely increasingthe gain. Initially set the gain between 3 and 5 with the GAINcontrol. Then, fine tune depending...

2-8 Identifying noise source To eliminate noise effectively, you should first identify the sourceas follows: • Operate all onboard equipment one by one while observing the picture. • Run the boat at various speeds to check if the noise is speed dependent. If neither of the above affects the picture,...

2-9 2.7 Detecting Fish Schools Aurally Occasionally you will be preoccupied with other tasks and un-able to concentrate on watching the sonar picture. In such casesit would be a good choice to use the audio function. This func-tion enables you to monitor echoes from fish schools and bot-tom through ...

2-11 2.9 Selecting Training Sector Quickly Normally the training sector is selected by the SECTOR con-trol. To the training sector more quickly, however, use the FULL/HALF key. This key allows switching between full circle andhalf circle training sector in a single key stroke. FULL CIRCLE HALF CIRCL...

2-12 0 10 DIMMER 0 10 BRILL HUE E/S FAST SCAN TRACK V:H RANGE AUTO TRAIN DEGAUSS BOTTOM MODE MENU MENU MENU : SONAR BOTTOM/3D E/S TX RATE : 10 TX PULSE LENGTH : LONG SHORT TX OUTPUT POWER : A B C(MAX) Figure 2-10 How to reduce bottom and surface reflections byreducing Tx output power 2.11 Suppressin...

2-13 In the CH-37, the TVG LEVEL and TIME controls compensatefor propagation loss. The effective distance is up to 1000 mapproximately. Without TVG function Proper TVG setting Noise caused bystrong reflectionof surfaceturbulence. Nearer targetechoes appearin larger size. Reduce gain fornearbyareas,u...

2-14 2.13 Relocating Fish School for Easy Observation When a fish school is near the edge of the screen and inconve-nient for observation, use the “ ” expanded sonar mode andadjust the TRAIN control (off-center function) to relocate thefish school close to the screen center. Fish school Own ship Fis...

2-15 2.15 Sonar Menu Operation Operating procedure 1. Press the MENU key on the sub panel 2. 2. Select the SONAR menu with the arrow keys on the sub panel 2. MENU : SONAR BOTTOM/3D DUAL E/S TX RATE : 10 TX PULSE LENGTH : LONG SHORT TX OUTPUT POWER : A B C(MAX) TX EXT SYNC : OFF ON IR : OFF ON STABIL...

2-18 2.18 Interpreting the Display This section provides the information necessary for interpret-ing the display. How the picture is painted The wide sounding beam is emitted from the soundome at acertain tilt angle (see hatched area in the figure below). Theinformation (target echoes) obtained by t...

2-19 Bottom echoes When the tilt angle is widened, the bottom echo illustrated be-low will appear on the display. When the tilt is narrowed, thebottom trace becomes wider and weaker. By observing thebottom condition on the display, the skipper can prevent netdamage. (A) Flat bottom Tilt angle: 10 ° ...

2-20 Fish schools A fish school appears as a mass of echoes on the screen. Thecolor of the mass shows the density of fish schools on the so-nar beam. To find distribution and center point of a fish school,try several different tilt angles. (A) Sea surface fish Tilt angle: -5 ° to 10 ° (B) Midwater, ...

2-21 Sea surface reflections To reduce sea surface reflections, set the tilt angle to 5 ° or higher, so the upper edge of the sonar beam does not hit thesea surface, or adjust TVG. When a narrow tilt angle is used,sea surface reflections cover a large area as illustrated below. 15 ° 15 ° Sea surface...

2-22 False echo by sidelobe An ultrasonic wave is emitted only in the direction set by theTILT control, however there are some emissions outside themain beam. These are called sidelobes. The energy of thesidelobe is fairly weak but when the water is comparativelyshallow and the bottom is rocky and h...

2-23 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 onown ship. For instance, interference from the sonar operated on otherboats will show itself o...

2-24 2.19 Sonar Mode Indications Normal sonar display Heading* Sector center marker Range Tilt Bearingscale Own shipmarker Courseline(Requiresnavigator orcurrent indicator) Bottomecho Fish school Northmarker* Trackball markerdata Trackballmarker C1: 0.9C2: 0.8C3: 0.5 2 3 1 Current data(Requirescurre...

2-25 Expanded sonar display Sector center marker Range Tilt Sector widthmarker Own shipmarker Trackballmarker Trackball markerdata R 150T 10 ° Figure 2-24 Indications on the expanded sonar display

2-26 2.20 Application Example The figure below shows a typical sonar mode application. Sonar (Horizontal) Mode PURSE SEINING BOTTOM TRAWLING After blinking, remains lit. 1 Power ON. 2 Lower soundome. 1 Power ON. 2 Lower soundome. Select the proper range andtilt angle. 3 Observe bottom on the screen....

3-1 VERTICAL FAN MODE 3.1 Typical Operating Procedure PWR O TRANSDUCER FULL HALF EVENT ENTER 1 2 3 CUSTOM MODE CH-37 R/B MODE TRAIN SECTOR TILT GAIN RANGE - + 0 10 LEVEL 0 10 TIME 0 10 DIMMER 0 10 BRILL 0 10 NL 0 10 AUDIO TVG HUE E/S FAST SCAN TRACK V:H RANGE AUTO TRAIN DEGAUSS BOTTOM MODE MENU MENU...

3-2 3.2 Selecting Range The RANGE control selects the detection (display) range. Se-lect the range according to either the fish species beingsearched or the depth desired. Normally it is set so that thebottom is traced at the lower part of the screen (like an echosounder). Surface Bottom RANGE m Ver...

3-3 3.3 Selecting Bearing for the Vertical Fan The TRAIN control determines the bearing of the vertical fanbeam. To which bearing the beam positions is known by thetrain indicator mark. Train Indicator Mark Training of Vertical Fan Beam Bow Bow TRAIN The training of the fan beam depends on the statu...

3-4 3.4 Selecting the Display Sector Sector center, width The SECTOR and the TILT controls determine the display area(sector width) and the display center (sector center) respec-tively. Mode Display Sector (transducer tilting sector) Vertical Fan Mode 36 ° 60 ° 96 ° 120 ° * 156 ° */180 ° * * Selecte...

3-5 3.5 Automatic Shifting of Own Ship Position Own ship position on the screen is shifted automatically eitherrightward or leftward according to the direction of the sectorcenter and the display sector width. The figure below shows the own ship position has been shiftedrightward on the screen to pr...

3-6 3.7 Horizontal, Vertical and Event Markers (trackball operation) The trackball functions to obtain the data (horizontal range anddepth) from own ship to the specified position on the screenand, combined with the R/B and EVENT keys, switches theHorizontal, Vertical and Event markers on/off. Event...

3-7 Function Procedure/Purpose TrackballData 1) Position the trackball marker on the desired location.2) Read the trackball data displayed at the upper left corner of the screen. Trackball data Trackball marker Horizontal RangeDepth 3.8 Applying Proper TVG The TVG function is the same as the one exp...

3-8 3.9 Bottom/3D Menu Operation Basic procedure 1. Press the MENU key on the sub panel 2. 2. Select BOTTOM/3D with the arrow keys in the sub panel 2. 3. Select item and setting with the arrow keys. The selected item is highlighted and the current setting is circumscribedin white. 4. To return to th...

3-9 3D VIEW SCALE: Determines the depth item, time or distancefor 3D display mode. (Requires optional equipment.) TIME SCALE or DISTANCE SCALE: Selects z-axis scale of3D picture. 3.10 Interpreting the Display This section provides the information necessary for interpret-ing the display. How the pict...

3-10 Port-starboard picture (bottom) You can see fish echoes at the center-right of the CRT. Thebottom is displayed wider as the distance from the ship’s posi-tion increases. Therefore, it may be difficult to discriminate bot-tom fish. Own ship Fishschool Bottom PORT STBD Figure 3-11 Port-starboard ...

3-11 Display of net hauling This is an example of net hauling display. The location of thenet is indicated clearly. (Ship is stopped.) Own ship Backward FORE AFT Net Figure 3-13 Net hauling and sonar picture False echo In a shallow water (less than 100 m) detection, unwanted ech-oes shown in the fig...

3-12 3.11 Vertical Fan Mode Indications Heading Train indicator H-Range V-Range H-RangescaleFish schools Bottom 2nd reflection V-Range scale Vertical/Horizontalmarker data Trackball Trackballdata Net mouth mark Figure 3-15 Indications in the vertical fan mode

3-13 3.12 How to Use the Vertical Fan Mode [1] TRAWLER (Surface/Mid-water/Bottom) Usage Fish school detectionBottom shape discriminationRelation between fish school and fishing gear Auto train 1 Turn on the AUTO TRAIN key on the sub panel 2 and set the direction of the train center to the fore-aft d...

3-14 [2] PURSE SEINER Usage Tracking fishObservation of fish movement/bottom shapeConfirmation of net forming 1 Approach the fish school while observing their distribution on the sonar mode. 3 Shoot the net, and then observe the location of the fish and the status of the net. 2 While approaching, fa...

4-1 3D MODE The 3D mode shows vertical echoes (real time echoes) and afrontal or oblique image of the bottom just passed, like a graphictrack plotter. This mode is useful for locating a wreck, a shoalor a fishing reef. Vertical echoes can be turned on/off throughthe BOTTOM/3D menu. 4.1 Selecting a 3...

4-2 Oblique image The oblique image is the equivalent of the frontal image ro-tated by 45 ° counterclockwise. Own position Sectionalview Figure 4-2 Oblique image 4.2 Turning Vertical Echoes On/Off Vertical echoes, namely, real time echoes, can be turned on oroff on the VERT. ECHO OVERLAY field of th...

4-3 4.3 Changing 3D View Scale Mode and Scale Selection The depth (z-axis) of the graph is displayed in either “TIMe” or“DISTance” scale mode. The depth can be set to 500 or 1000meters in the distance scale mode, or 1/1, 1/2 or 1/4 in the timescale mode. The fraction means graph update/number of tra...

5-1 CUSTOM MODE KEYS ( ¡ ¡ ¡ ¡ ¡ , ™ ™ ™ ™ ™ , £ £ £ £ £ ) 5.1 About the Custom Mode Keys Like the redial feature on a telephone, the custom mode keysrecord control settings and play them back in a single key stroke.This feature is useful when you need to quickly set up the so-nar according to fishi...

5-2 5.3 Custom Mode Operation 1. Press desired custom mode key ¡ , ™ or £ . 2. To escape from the custom mode settings, adjust any con- trols. [Example] FISHING GROUND MODERANGE 200 mSECTOR 360 ° TRAIN 0 ° TILT 30 ° MODERANGE 100 mSECTOR 180 ° TRAIN 90 ° TILT 90 ° MODERANGESECTORTRAINTILT Fold here ...

6-1 MENU SETTINGS 6.1 System Setting Menu 1. Turn on the power while pressing the MENU key. Release the key when you hear a beep. The SYSTEM menu ap-pears. ** SYSTEM SETTING ** EXIT : PRESS MENU KEY 3D DISPLAY : OFF ON SHIP’S POSITION : OFF L/L LOP CURRENT DATA : OFF FLOW FROM FLOW TO DEPTH DATA : O...

6-2 Table 6-1 System setting menu description m e t I n o i t p i r c s e D Y A L P S I D D 3 . f f o / n o y a l p s i d D 3 s n r u T N O I T I S O P S ' P I H S e d u t i t a l ; t a m r o f n o i t i s o p s t c e l e s d n a f f o / n o n o i t a c i d n i n o i t i s o p s n r u T . P O L n a ...

6-4 6.3 System Menu Press the MENU key while turning on the power. The SYSTEMmenu appears. ** SYSTEM MENU ** SYSTEM SETTING RANGE - SONAR MODE RANGE - VERTICAL FAN MODE RANGE/SHIFT - E/S COLOR LANGUAGE DISPLAY TEST1 - ROM/RAM/KEY TRAIN/TILT TEST SCREEN ADJUSTMENT TEST PATTERN DISPLAY TEST2 - OPERATI...

6-5 3. Select range. 4. Set range. 5. To return to the SYSTEM menu, press the MENU key. 6. To quit, reset the power. Range - vertical fan mode 1. Select RANGE-VERTICAL FAN MODE from the SYSTEM menu. 2. Press the MENU key. ** RANGE - VERTICAL FAN MODE ** 1 : 20 2 : 40 3 : 60 4 : 80 5 : 100 6 : 120 7 ...

6-7 Color setting The color setting screen allows you to adjust display colors. 1. Select COLOR from the SYSTEM menu. 2. Press the MENU key. ** COLOR ** LEVEL : R G B 15 : 11 0 0 14 : 13 0 0 13 : 15 0 0 12 : 15 4 0 11 : 14 6 0 10 : 14 9 0 9 : 14 11 0 8 : 13 13 0 7 : 11 13 0 6 : 0 13 0 5 : 0 12 9 4 :...

6-8 Factory setting menu (restoring default settings) 1. Select DEFAULT from the SYSTEM menu. 2. Press the MENU key. EXIT : PRESS MENU KEY NOTE! ALL SETTINGS INCLUDED IN SYSTEM MENU WILL BE CHANGED TO FACTORY SETTING ** DEFAULT ** ARE YOU SURE? : NO YES Figure 6-8 Default screen 3. Select YES and pr...

6-9 6.4 Dual Menu Press the [MENU] and choose DUAL to open DUAL menu. MENU : SONAR BOTTOM/3D DUAL E/S DUAL MODE : E/S BOTTOM SONAR NET MOUTH SHIFT : 1 NET MOUTH WIDTH : 100 NET MOUTH HEIGHT : 30 NET DEPTH : AUTO MANUAL OFF HOR SCAN RATE : 1 VER SCAN PATE : 1 EXIT : PRESS MENU KEY Description of DUAL...

7-1 MAINTENANCE & TROUBLESHOOTING Good performance depends on regular maintenance. Follow-ing the recommended procedures in this chapter will keep theequipment operating in top condition for years to come. ELECTRICAL SHOCK HAZARDDo not open the equipment. Only qualified personnelshould work insi...

7-2 7.3 Maintenance of Hull Unit Lubrication Grease the raise/lower screw shaft once a year. Also, greasethe raise/lower main shaft (upper part of the grease cotton re-tainer) twice a year. These parts can accessed by removingthe raise/lower drive assembly cover. Manual raise/lower of transducer wit...

7-3 7.4 Display Unit Test This test checks the ROM, RAM and keyboard for proper op-eration. 1. Turn on the power while pressing and holding down the MENU key. Release the MENU key when you hear a beep.The SYSTEM menu appears as shown below. ** SYSTEM MENU ** SYSTEM SETTING RANGE - SONAR MODE RANGE -...

7-4 ** DISPLAY TEST ** PROGRAM NO. 0650101-xxx MAIN PANEL ROM OK * * * SRAM OK 12 12 VRAM OK 0 255 SIO1 OK 12 0 SIO2 OK 0 0 0 TX FREQUENCY 60KHZ X: 0 Y: 0 ROLL 0 0 0 0 PITCH 0 0 REMOTE CONTROL 0 0 0 255 255 255 * 0 0 0 * * 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 EXIT 0 0 0 SUB PANEL EXIT : PRESS MENU KEY RO...

7-6 7.6 Test Pattern This test checks display position and colors. 1. Turn on the power while pressing and holding down the MENU key. 2. Select TEST PATTERN with the arrow keys in the sub panel 2. 3. Press the MENU key to start the test. Position check BLACK BLUE GREEN RED Figure 7-5 Test pattern 4....

7-7 Transceiver unit error message If the power is not supplied to the transceiver unit, the followingmessage appears on the screen and the buzzer sounds. TRANSCEIVER UNIT POWER OFF (CHECK FUSE ON TRANSCEIVER UNIT) PRESS R/B KEY TO SILENCE ALARM Figure 7-7 Transceiver unit error message If this occu...

7-8 Train error message If something is wrong with the train control circuit, the followingmessage appears and the unit stops operating. Turn the PWRswitch off and contact your service agent at your earliest con-venience. TRAIN NG Figure 7-9 Train error message Tilt error message If something is wro...

7-9 7.8 Troubleshooting Table The table below provides common symptoms of equipmenttroubles and the means to rectify them. If normal operationcannot be restored, do not check inside the system. Any repairwork is best left to a qualified technician. Check Symptom No picture Power supply. Check ship’s...

AP-1 CUSTOM MODE KEY LABELS (FRONT) (BACK) MODERANGESECTORTRAINTILT 200m 0 ° 225 ° 30 ° 200m 0 ° 360 ° 30 ° 100m 180 ° MODERANGESECTORTRAINTILT MODERANGESECTORTRAINTILT FISHING GROUND MODERANGESECTORTRAINTILT MODERANGESECTORTRAINTILT MODERANGESECTORTRAINTILT FISHING GROUND MODERANGESECTORTRAINTILT M...

SP - 1 SPECIFICATIONS OF COLOR SECTOR SCANNING SONAR CH-37 1. GENERAL (1) Display System PPI display on high resolution 15 ” (381mm) color CRT (2) Picture Color 16 or 8 color depending on signal strength (3) Display Mode 1) Normal sonar mode display* 2) Expanded sonar mode display 3) Vertical fan mo...

Index-1 INDEX ¡ , ™ , £ keys (custom mode keys) 5-1–5-2 3D mode 4-1–4-33D view scale (time, distance) 4-3 A AUDIO control 2-9AUTO TRAIN key 3-3Auto train sector (vertical fan mode) 3-8 B Background color 1-6Beamwidth (vertical fan mode) 3-8Bottom/3D menu 3-8BRILL control 1-3 C Color adjustment 6-7Co...