Back COLOR SCANNING SONAR CSH-5L/CSH-8L
Your Local Agent/Dealer 9-52 Ashihara-cho, Nishinomiya 662-8580, JAPAN Telephone : 0798-65-2111 Fax 0798-65-4200 : All rights reserved. Printed in Japan FIRST EDITION : DEC DEC.. 2002 C1 Pub. No. OME-13190 ( YOTA ) CSH-5L/8L : OCT. OCT.
SAFETY INSTRUCTIONS WARNING ELECTRICAL SHOCK HAZARD WARNING Use the proper fuse. 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. Fuse rating is shown on the equipment. Use of a wrong fuse can damage the equipment. Do not operate the equipment with wet hands. Electrical shock can result.
CAUTION Do not exceed 18 knots with the transducer lowered and do not exceed 16 knots when lowering or raising the transducer. The transducer may become damaged. Turn off the hull unit before using the hand crank. Bodily injury may result if the power is not turned off. The zinc block attached near the transducer must be replaced yearly. The junction between the transducer and main shaft may corrode, which can result in loss of the transducer or water leakage iinside the ship.
TABLE OF CONTENTS FOREWORD .................................................................................................................vi SYSTEM CONFIGURATION .......................................................................................vii 1. OPERATIONAL OVERVIEW................................................................................ 1-1 1.1 Control Unit................................................................................................................ 1-1 1.
3. ADVANCED SONAR OPERATION ...................................................................3-1 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Tracking a Fish School (target lock)........................................................................... 3-1 Detecting Fish Schools Aurally .................................................................................. 3-3 The Fish Alarm ..........................................................................................................
8. MAINTENANCE, TROUBLESHOOTING ............................................................ 8-1 8.1 General Maintenance................................................................................................. 8-1 8.2 Cleaning the Equipment............................................................................................. 8-1 8.3 Hull Unit Maintenance................................................................................................ 8-2 8.3.1 Lubrication points, zinc plate....
FOREWORD A Word to the Owner of the CSH-5L/CSH-8L Congratulations on your choice of the FURUNO CSH-5L/CSH-8L Color Scanning Sonar. For over 50 years FURUNO Electric Company has enjoyed an enviable reputation for innovative and dependable marine electronics equipment. This dedication to excellence is furthered by our extensive global network of agents and dealers. Your scanning sonar is designed and constructed to meet the rigorous demands of the marine environment.
SYSTEM CONFIGURATION Monitor (MU-150C, etc., Max.
Monitor (MU-150C, etc., Max.
1. OPERATIONAL OVERVIEW 1.1 Control Unit All operations are carried out from the control unit. All controls quickly respond to the operator’s command and the associated reaction can be seen on the screen almost immediately. Trackball Positions trackball mark. Lowers the transducer. Raises the transducer. Turns power on/off. Sets transducer tilt angle.
1. OPERATIONAL OVERVIEW 1.2 Remote Controller (option) The remote controller provides armchair control of the tilt, range, gain and menu functions. Hole for hanging RANGE Control p: Increases range. q: Decreases range. TILT Control p: Increases tilt angle. q: Decreases tilt angle. Chooses menu item in menu operation. GAIN Control p: Increases gain. q: Decreases gain. Chooses menu option in menu operation.
1. OPERATIONAL OVERVIEW 1.3 Basic Operating Procedure 1.3.1 Turning on the power 1. Press the POWER switch on the control unit to turn on the power. 2. Turn on the monitor (user supply). The system initiates the START UP test to check itself for proper operation. The results are shown as OK or NG (No Good). For any NG, contact your dealer for advice. After the test is completed, the last-used display appears. START UP TEST MAIN-0 XX.XX = Program Version No. 1050729-XX.
1. OPERATIONAL OVERVIEW 1.3.3 Transmitting TRANSMISSION in the SONAR menu is off in the default setting. If it is has been set to ON, the procedure below is not necessary. When the transducer is lowered, transmission starts and when it is raised transmission is stopped. 1. Press the [MENU] key to open the menu. 2. Use the [RANGE] control to choose [MENU MODE] at the top of the screen. 3. Use the [GAIN] control to choose SONAR.
1. OPERATIONAL OVERVIEW 1.3.4 Adjusting backlighting of control unit 1. Press the [MENU] key to open the menu. 2. Use the [RANGE] control to choose [MENU MODE] at the top of the screen. 3. Use the [GAIN] control to choose SYSTEM.
1. OPERATIONAL OVERVIEW 1.3.5 Choosing a display mode Three display modes are available: NORMAL, COMBI-1 and COMBI-2. To choose the display mode, do the following: 1. 2. 3. 4. 5. Press the [MENU] key to open the menu. The last-used menu is displayed. Use the [RANGE] control to choose [MENU MODE] at the top of the screen. Use the [GAIN] key to choose SONAR. Use the [RANGE] control to choose DISPLAY MODE. Use the [GAIN] control to choose desired mode among COMBI-1, NORM and COMBI-2. 6.
1. OPERATIONAL OVERVIEW Normal mode display (sonar display) N 733 708 189 B 60S 12.4 kt SHIP SPEED N R 1000 SHIP COURSE T 15° (15) LAT/LON G 10.0 246° 32°52.150N 132°12.150E 126m DEPTH WATER CURRENT W 342° C1 1.2kt E 256° C3 0.4kt WATER TEMP 20min 500 Text Window For description see Chapter 5. 298° C2 0.8kt 12.4°C 10 0 14 12 10 S Sonar display COMBI-1 display (sonar display + audio display) 517 500 134 B 60S N N Range & Bearing Marks SHIP SPEED R 1000 T 15° (15) G 10.
1. OPERATIONAL OVERVIEW COMBI-2 display (sonar display + echosounder display) 545 472 272 B 60S N SHIP SPEED N R 1000 T 30° (30) G 10.0 SHIP COURSE 12.4 kt 246° DEPTH 126m 32°52.150N 132°12.150E LAT/LON 20min WATER TEMP 12.4°C 10 Text Window For description see Chapter 5. 0 14 12 10 0 -E - Fish School Depth Scale 100 - 500 - Bottom 200 - S COMBI-2 display (sonar display + echosounder display) 1.3.6 Choosing the display range The [RANGE] control chooses a display range.
1. OPERATIONAL OVERVIEW 1.3.7 Adjusting the gain The [GAIN] control adjusts receiver sensitivity. It should be adjusted to see fish echoes clearly with minimal noise on the screen. Too high a setting not only causes excessive noise on the screen and makes it difficult to discriminate wanted fish echoes but also causes bottom echoes to be painted in strong colors, resulting that the echoes from bottom fish are masked by bottom reflections. A setting between 3 and 7 is usually suitable.
1. OPERATIONAL OVERVIEW 1.4 Setting the Tilt Angle The tilt angle shows the direction to which the sound wave is emitted. When the sound wave is emitted horizontally, it is said to be zero (0) degrees and when emitted vertically, 90 degrees. To set a tilt angle, operate the TILT lever for the desired angle while watching the tilt angle indication at the top right corner of the sonar display.
1. OPERATIONAL OVERVIEW Range and tilt angle Range (m) ±2-10° ±4-14° ±6-20° ±10-26° 50, 85, 100, 150, 200, 250, 300, 350 400, 450, 500 600, 800 1000, 1200, 1600 ±10° ±8° ±6° ±2° ±14° ±12° ±10° ±4° ±20° ±16° ±14° ±6° ±26° ±20° ±20° ±10° For example, when the [RANGE] control, [TILT] lever and automatic tilt are set to 1000 m, 8° and ±2-10° respectively, the tilt angle changes at each transmission as follows: 8° → 10° → 8° → 6° → 8° → ...
1. OPERATIONAL OVERVIEW 1.4.2 Bottom and tilt angle Finding the proper tilt angle is of utmost importance when searching for fish, especially in coastal water fishing, where the depth of the fishing ground is from 50-100 m. In this type of fishing ground it is imperative that the bottom echo be always displayed to properly distinguish between fish and the bottom. When selecting a tilt angle, keep the following points in mind.
1. OPERATIONAL OVERVIEW 1.4.4 Points to consider • As a general rule of thumb, a vertically distributed fish school is a better sonar target than a horizontally one, since it reflects the transmitted pulse back toward to the source. • In 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 sonar screen.
1. OPERATIONAL OVERVIEW 1.4.6 Suitable tilt angle The table below shows the estimated detection range for tilt angles of 0, 5, 10 and 15 degrees. Refer to the table to find suitable tilt angle from depth and detection range.
1. OPERATIONAL OVERVIEW 1.6 Sonar Menu Overview This equipment has four menus: sonar menu, sounder menu, marks menu and system menu. Of the four menus, the SONAR menu is the one you will use most often. Note that the gain and range cannot be adjusted while the menu is displayed. 1.6.1 Operating procedure 1. Press the [MENU] key. The last-used menu appears. 2. Use the [RANGE] control to choose [MENU MODE] at the top of the screen. 3. Use the [GAIN] control to choose SONAR to display the SONAR menu.
1. OPERATIONAL OVERVIEW 4. Use the [RANGE] control to choose a menu item. The selected item is highlighted. Note: Items displayed in red are locked to prevent accidental change of setting. When any of those items are selected the display shown below appears, to ask you if you are sure to change the setting. To change the setting, use the [GAIN] control to choose YES and then press the [EVENT] key. The items colored in red turn green to show that they are available for adjustment.
1. OPERATIONAL OVERVIEW Description of sonar menu (con’t from previous page) Item Description Ref. page COLOR RESPONSE Adjusts color level against strong reflections. The higher the setting, the more the red color is displayed and weak level colors are displayed as is, thereby giving the appearance that the gain has been raised. — DELETE COLOR Erases desired echo level from the display. 2-7 ECHO AVERAGE Specifies how long to leave afterglow on the screen.
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2. FINE TUNING THE SONAR PICTURE 2.1 Eliminating Unwanted Echoes Echoes from targets such as bottom and fish return to the transducer in order of distance to them, and when we compare their intensities at the transducer face, those from nearer targets are generally stronger when their reflecting properties are nearly equal.
2. FINE TUNING THE SONAR PICTURE 8. On a long range, locate a fish school which is approaching own ship. Note that the tilt should be kept adjusted so that the fish school is always placed in the center of the sonar beam, i.e., so that the fish school is displayed in strongest colors possible. Check that the fish echo is displayed in the same color while it approaches. If the color changes suddenly to weaker colors as the fish echo enters FAR and NEAR areas, the TVG is improperly set.
2.3.2 Pulse length The pulse length control determines the length of the transmission pulse emitted into the water. While a longer pulse is advantageous for long-range sounding, it has the disadvantage of being poor in discrimination of targets, i.e., ability to separate several closely located targets. When searching bottom fish, therefore, it is useful to shorten the pulselength in order to separate fish echoes from bottom reflections.
2. FINE TUNING THE SONAR PICTURE 2.4 Suppressing Bottom and Sea Surface Reflections in Shallow Fishing Grounds In shallow fishing grounds with hard or rocky bottom, bottom reflections often interfere with wanted fish echoes and they can not be eliminated sufficiently with the aforementioned TVG and AGC, especially when the tilt angle is large in order to track fish schools approaching within 400 m. In such cases try to reduce the output power without turning down the gain.
2. FINE TUNING THE SONAR PICTURE 2.5 Rejecting Sonar Interference and Noise While observing the sonar picture, you may encounter occasional or intermittent noise and interference. These are mostly caused by on-board electronic equipment, engine or propeller noise, or electrical noise from other sonars being operated nearby. 2.5.1 Identifying noise source To eliminate noise effectively, you should first identify the noise source.
2. FINE TUNING THE SONAR PICTURE 2.5.4 Rejecting interference with TX cycle When other sonars of the same TX frequency as own sonar are near, an interference ring caused may be displayed. To erase the interference ring from the screen, reduce the TX CYCLE setting. Interference Tx cycle high Tx cycle lowered Interference rings 1. 2. 3. 4. 5. Press the MENU key. Use the [RANGE] control to choose [MENU MODE] at the top of the screen. Use the [GAIN] control to choose SONAR to display the SONAR menu.
2. FINE TUNING THE SONAR PICTURE 2.6 Choosing Beamwidth 2.6.1 Horizontal beamwidth If you wish to have better bearing discrimination (ability to distinguish two closely located targets at the same range and different bearings) for fish schools and also wish to examine the contour of bottom, set HOR BEAMWIDTH to NARROW, on the SONAR menu. 2.6.2 Vertical beamwidth For better bearing discrimination in the vertical direction, set VER BEAMWIDTH to NARROW, on the SONAR menu. 2.
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3. ADVANCED SONAR OPERATION 3.1 Tracking a Fish School (target lock) Target lock, which requires speed and heading inputs, automatically tracks a fixed location (such as a reef) so that you won’t lose sight of it on the display screen. 1. On the sonar display, operate the trackball to place the trackball mark on the location you want to track. 2. Press the [TARGET LOCK] key. The target lock mark appears ( ) on the echo selected and the bearing mark bisects the echo.
3. ADVANCED SONAR OPERATION Note 3: The target lock feature tracks a target up to 55° tilt angle. For example, if a ship moves from position A to position D, the target lock works between positions A and B. The tilt angle is fixed between positions B and C is 55°, however calculation continues internally. Target lock is restarted after position C.
3.2 Detecting Fish Schools Aurally Sometimes you may be preoccupied with other tasks and unable to concentrate on watching the sonar picture. In such cases it would be a good choice to use the audio function. This function enables you to monitor echoes from fish schools and bottom through the built-in speaker. After you’ve become accustomed to monitoring fish aurally, you should be able to detect a fish school from a range longer than you can detect it on the screen.
3. ADVANCED SONAR OPERATION 3.3 The Fish Alarm The fish alarm generates an audio alarm when a fish echo above a certain strength enters the alarm zone. 1. Operate the trackball to place the trackball mark on the starting point of the alarm zone. 2. Press the [ALARM ZONE] key. 3. Operate the trackball to place the trackball mark on the ending point of the alarm zone. 4. Press the [ALARM ZONE] key. The display paints a fan-shaped alarm zone.
3. ADVANCED SONAR OPERATION 3.4 Measuring Fish School Speed To ensure a good haul, it is important to estimate the direction and speed of the fish school before shooting the net. You can do this with the [FISH] key. If the tidal current data is used together with fish speed data, you can determine the timing of the net shooting more efficiently. This function requires speed and heading inputs. 3.4.1 Entering a fish mark 1.
3. ADVANCED SONAR OPERATION Note 3: Each time the [FISH] key is pressed the fish mark changes in the sequence shown below. Maximum 10 fish marks may be inscribed, one latest, one 2nd latest and eight past. Fish key pressed once: Fish key pressed twice: Fish key pressed three times: X Fish key pressed four times: 3.4.2 X X Deleting individual fish marks To delete specific fish marks, use the [DELETE MARK] key as shown below. To delete fish marks collectively, see paragraph 3.7. 1.
3. ADVANCED SONAR OPERATION 3.6 Event Mark, Own Ship Position Mark 3.6.1 Event mark The event mark, which requires speed and heading data, is useful for finding the horizontal range, depth and bearing to a location some distance from current position. Plotting an event mark on the display is equivalent to dropping a buoy with an anchoring chain that extends from surface to bottom.
3. ADVANCED SONAR OPERATION Each time the key is pressed the appearance of the event marks changes as below. Ten marks may be entered. When this amount is exceeded the oldest event mark is automatically erased. This data is used to display latest event mark data. First press of the [EVENT] key → 2nd press of the [EVENT] key 1 2 → 3 1 → → 4th press of the [EVENT] key → → 3rd press of the [EVENT] key 2 1 Past Event Mark Latest Event Mark Event marks 3.6.
3. ADVANCED SONAR OPERATION 3.7 Collectively Deleting Marks You may collectively delete track, event marks or fish marks as shown below. Own ship position mark may be also be deleted, one by one. 1. 2. 3. 4. 5. Press the [MENU] key to open the menu. Use the [RANGE] control to choose [MENU MODE] at the top of the screen. Use the [GAIN] control to choose SONAR. Use the [RANGE] control to choose ERASE MARKS. Use the [GAIN] control to choose item to delete: TRACK, SHIP, EVENT or FISH.
3. ADVANCED SONAR OPERATION 3.8 Function Keys (F1-F4) A function key may be programmed two ways: set up the equipment according to fishing ground or target fish, or provide a shortcut for a menu item on the SONAR or SOUNDER menu.
3. ADVANCED SONAR OPERATION 7. Use the [GAIN] control to choose the function key (F1-F4) you want to program. 8. Press the [EVENT] key to program the function key selected at step 7. 9. Press the [MENU] key to close the menu. Useful programs (main items only) For detecting surface fish TX OUTPUT PULSE LENGTH TX CYCLE TVG NEAR TVG FAR HOR BEAMWIDTH VER BEAMWIDTH COLOR CURVE COLOR RESPONSE 3.8.
3. ADVANCED SONAR OPERATION 3.8.4 Confirming function key program You may confirm function key program as below. 1. 2. 3. 4. Press the [MENU] key to open the menu. Use the [RANGE] control to choose [MENU MODE]. Use the [GAIN] control to choose SONAR. Use the [RANGE] control to choose ASSIGN MENU. The current programs are shown at the top of the menu F1 F2 F3 F1 KEY F2 KEY TVG NEAR F4 TVG FAR Function key assignment confirmation screen 5. Press the [MENU] key to close the menu.
3. ADVANCED SONAR OPERATION 3.9 Suppressing Effects of Pitching and Rolling (Stabilizer) The Motion Sensor MS-100 (option) compensates for the affects of pitching and rolling to provide steady, non-fading pictures, along the bearing selected. Follow the procedure below to use the stabilizer feature.
3. ADVANCED SONAR OPERATION 3. To turn off the stabilizer, press the [STABILIZER] key. The stabilizer mark, stabilizer indication and stabilizer bearing data are erased. If range and bearing marks are shown they are displayed along with their data. Note 1: The tilt angle can be manually set in the range of 0-55°, however pitching and rolling are compensated within the ±20° in the tilt angle range of 0 to 55°.
4. ECHOSOUNDER MODE This chapter covers operation of the echosounder picture, which may be displayed by choosing the COMBI-2 mode. 4.1 Choosing the Range The basic range and range shifting functions together give you the means to select the depth you can see on the screen. The basic range can be thought of as providing a “window” into the water column and range shifting as moving the “window” to the desired depth.
4. ECHOSOUNDER ** SOUNDER MENU (RANGE CTRL: U/D, GAIN CTRL: L/R) ** [MENU MODE] : SONAR SOUNDER MARKS SYSTEM COLOR RANGE : 1 : 160 2 3 4 SHIFT E/S INT REJECT : 0 : ON GAIN CLUTTER : 3.0 : 2.0 ADVANCE : 2/1 1/1 1/2 1/4 COLOR CURVE DELETE COLOR 1/8 : LINEAR :0 1 2 3 DRAFT : 0.0(m) OFF PRESS [MENU] KEY TO EXIT Sounder menu 4. Use the [RANGE] control to choose RANGE. 5. Use the [GAIN] control to choose range desired among 20, 40, 80, 120, 160, 240 and 320 (meters). 6.
4. ECHOSOUNDER 4.3 Picture Advance Speed The picture advance speed determines how quickly the vertical scan lines run across the screen. When selecting a picture advance speed, keep in mind that a fast advance speed will expand a fish school horizontally and a slow advance speed will contract it. Note: Match the picture advance speed to that of the echo sounder. This setting does not affect original echosounder setting. 1. 2. 3. 4. 5. Press the [MENU] key to open the menu.
4. ECHOSOUNDER 4.5 Suppressing Interference Interference from other sounders or electrical interference shows itself on the screen as in the illustration below. Interference from other sounders Inteference from electrical equipment Interference To remove interference, do the following: 1. 2. 3. 4. 5. 6. 4.6 Press the [MENU] key to open the menu. Use the [RANGE] control to choose [MENU MODE] at the top of the screen. Use the [GAIN] control to choose SOUNDER.
4. ECHOSOUNDER 4.7 Erasing Weak Echoes Sediments in the water or reflections from plankton may be painted on the screen in green or light-blue, as shown in the illustration below. These echoes may be erased in order of strength as below. Weak reflections Weak echoes 1. 2. 3. 4. 5. Press the [MENU] key to open the menu. Use the [RANGE] control to choose [MENU MODE] at the top of the screen. Use the [GAIN] control to choose SOUNDER. Use the [RANGE] control to choose DELETE COLOR.
4. ECHOSOUNDER 4.8 Other Items on the Sounder Menu The table below describes the SOUNDER menu items not described in the previous sections of this chapter. Sounder menu description 4-6 Item Description Ref. page COLOR Choose one of four display color patterns, according to your environment. — COLOR CURVE Adjusts echo presentation color curve against strong reflections. For example, setting “1” averages weak to strong signals to obtain a balanced picture.
5. MARKS AND DATA 5.1 Marks and Data on the Normal Display Freeze condition (for testing) Trackball Mark Data Slant Range Horizontal Range Depth B Relative Bearing* Range (Shown several seconds when range is changed.) TX OFF STAB R 1000 T 15° Stablilizer (15) Mark* G 10.0 F1 Fish Mark* SHIP SPEED 12.4 kt Speed* SHIP COURSE 246° Course* LAT/LON 32°52.150N 132°12.
4. ECHOSOUNDER Description of marks and data on the normal display Mark/Data Description Own Ship Mark Shows own ship’s present position and points in bow direction. North Mark* When a heading sensor is connected, the North mark is displayed and points to North. North mark Heading Mark Heading mark The heading mark is a dashed line extending from the screen center to the edge of the outermost range ring and it points in the direction of ship’s heading.
5. MARKS AND DATA Description of marks and data on the normal display (con’t from previous page) Mark/Data Description The range rings are dashed concentric circles inscribed at intervals of 1/4 or 1/2 of the range in use, depending on menu setting. Range ring data is also provided every two range rings. Range Rings 500 Electronic Bearing Scale* N W E S The electronic bearing scale is the outermost ring on the sonar display and is available with heading sensor connection.
5. MARKS AND DATA Description of marks and data on the normal display (con’t from previous page) Mark/Data Description Latest Event Mark This mark depicts important locations. Use the trackball to place the trackball mark where desired and press the [EVENT] key to inscribe an event mark. Requires speed and heading data. Event marks follow own ship’s movement. Ten marks may be entered and each press of the [EVENT] key enters an event mark and previously entered marks change as follows.
5. MARKS AND DATA 5.2 Marks and Data on the Echosounder and Audio Displays N SHIP SPEED N SHIP COURSE SONAR MARKS AND INDICATIONS SAME AS ON NORMAL DISPLAY 12.4 kt 246° 126m 32°52.150N 132°12.150E LAT/LON Range and Bearing Marks 20min WATER TEMP 12.
5. MARKS AND DATA Description of marks and data on the echosounder and audio displays Mark/Data Description Color Bar The color bar provides an estimate of echo strength in 16 colors. The red color is the strongest echo signal. Depth Scale, Range Scale The depth scale and range scale provide an estimate of depth and range in the echosounder and audio displays, respectively. It may be displayed at the right or left side of those displays. See COMBI SCALE on the SYSTEM menu.
6. INTERPRETING THE DISPLAY 6.1 Bottom Echo When the tilt angle is changed, the bottom echo will appear on the screen. When the tilt angle is decreased, the bottom trace becomes wider and weaker. By observing the bottom condition on the screen, the skipper can prevent the net from being damaged by a reef or a shipwreck. (A) Flat bottom Tilt angle: 10˚ to 15˚ Decreased tilt angle Only half of vertical beam width captures the bottom.
6. INTERPRETING THE DISPLAY 6.2 Fish School A fish school appears as a mass of echoes. The color of the mass shows the density. To know the distribution and center point of a fish school, choose several different tilt angles. (A) Sea surface fish Tilt angle: 0˚ to 10˚ Bottom echo not displayed because of decreased tilt angle. Sea surface reflections are present.
6. INTERPRETING THE DISPLAY 6.3 Sea Surface Reflections To reduce sea surface reflections, set the tilt angle to 5° or more so that the upper edge of the sonar beam does not hit sea surface, or adjust the TVG functions. When the sonar is used with a narrow tilt angle, the sea surface reflections cover a large area (up to 300 m to 400 m) as illustrated below. Sea surface Tilt angle indication Tilt: 0˚ Sea surface reflections Sea surface Tilt: 5-6˚ Sea surface reflections 6.
6. INTERPRETING THE DISPLAY 6.5 False Echo by Sidelobe An ultrasonic wave is emitted only in the direction set by the [TILT] lever but, in practice, there are some emissions outside the main beam that are called “sidelobes.” Energy of the sidelobe is fairly weak but when the sonar is used in comparatively shallow water with a hard and rocky bottom, strong target signals are detected by the sidelobe. These are represented on the screen as a false echo as shown below.
7. MARKS AND SYSTEM MENUS This chapter describes the MARKS and SYSTEM menus. To display the SYSTEM or MARKS menu, do the following: 1. Press the [MENU] key to open the menu. 2. Use the [RANGE] control to [MENU MODE] at the top of the screen. 3. Use the [GAIN] control to choose SYSTEM or MARKS as appropriate. 7.
7. MARKS AND SYSTEM MENUS MARKS menu description Item Description Ref. Page RANGE RINGS Turns the range rings on/off and chooses range ring interval, 1/4 or 1/2 the range. When turned off, the north mark and heading mark are also turned off. 5-3 BEARING SCALE Turns the electronic bearing scale on/off. 5-3 CURRENT VECTOR Turns the current (tide) mark on/off. 5-3 CURRENT DIR Turns current (tide) data on or off.
7. MENU DESCRIPTION 7.
7. MENU DESCRIPTION Description of SYSTEM menu (con’t from previous page) Item Description Ref. Page. — SPEED MESSAGE Turns automatic transducer retraction on/off and sets speed (5-16) at which retraction occurs. This function requires speed data. The transducer may be retracted at a speed different from set here if the speed data is wrong. Reduce the ship’s speed below 16 knots and then retract the transducer. Turns on/off ship’s speed warning message.
8. MAINTENANCE, TROUBLESHOOTING WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment. Only qualified personnel should work inside the equipment. 8.1 General Maintenance This equipment is designed and constructed to provide many years of trouble-free performance when properly maintained. However, no machine can perform to the utmost of its ability without proper maintenance. Check the following points monthly. • Check all cables. If damaged, replace. • Check connectors at rear of each unit.
8. MAINTENANCE, TROUBLESHOOTING 8.3 Hull Unit Maintenance 8.3.1 Lubrication points, zinc plate Apply MOLYTONE grease #2 (or equivalent) every six months. Raise transducer and coat main shaft with DAPHAECOROAEX #2 (or equivalent) every six months. The zinc plate attached near the transducer must be replaced every year. The junction between the main shaft and transducer may corrode, which may result in the loss of the transducer or water leakage in the vessel.
8. MAINTENANCE, TROUBLESHOOTING 8.3.2 Manually raising the transducer If the transducer cannot be raised automatically, manually raise it as follows: CAUTION Turn off the hull unit before using the hand crank. Bodily injury may result if the power is not turned off. 1. Turn off the hull unit’s power switch. 2. Open the gear cover. Gear cover Screw (M4 X 8, 4 pcs.) Screw shaft gear Motor gear OFF ON POWER switch Hull unit 3. Mount the hand crank onto the screw shaft gear or motor gear.
8. MAINTENANCE, TROUBLESHOOTING 8.4 Fuse Replacement WARNING Use the proper fuse. Use of a wrong fuse can result in damage to the equipment. The fuses in the processor and transceiver units protect them from overvoltage, equipment fault and reverse polarity of the ship’s mains. If the power cannot be applied, first check the fuse for the processor unit. The fuse for the transceiver unit is inside the unit; have a qualified technician check the fuse.
8. MAINTENANCE, TROUBLESHOOTING 8.6 Troubleshooting The table below provides common symptoms of equipment troubles and the means to rectify them. Symptom Cannot turn on the power Check, Remedy • Check power cable. • Check ship’s mains. • First check the fuse in the processor unit. If it is OK, have a qualified technician check the fuse in the transceiver unit. Bottom echo becomes irregular • Rough seas. Distance to the bottom changes due to rolling and Weak echo • Output power set to minimum.
8. MAINTENANCE, TROUBLESHOOTING 8.7 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. Error messages Message Overvoltage OVERVOLTAGE RETRACT TRANSDUCER AND TURN OFF POWER. PRESS [R/B] KEY TO CLEAR ALARM. Meaning, Remedy Excessive voltage detected. The message flashes and the audio alarm sounds. Retract the transducer and then turn off the power.
8. MAINTENANCE, TROUBLESHOOTING 8.8 Diagnostic Tests This unit has 10 diagnostic tests (eight with the CSH-8L) which check it for proper performance. Although the tests are designed primarily for use by the service technician, they can also be executed by the user to identify defective components. However, never attempt to check inside the unit; there are no user-serviceable parts inside. Any repair work is best left to a qualified technician. 8.8.1 Choosing a diagnostic test 1.
8. MAINTENANCE, TROUBLESHOOTING 8.8.2 Description of diagnostic tests Single test, Conti(nuous) test The single and conti(nuous) tests check the ROMs and RAMs for proper operation, one time or continuous, respectively. After the test is completed, the results are indicated as OK (normal operation) or NG (malfunction), to the right of the device checked. For the single test, normal operation is restored after completion of the test.
8. MAINTENANCE, TROUBLESHOOTING Panel test The panel test checks the controls on the control unit for proper operation. 1. Press a key. If the key is normal, “1” is shown at the key’s on-screen location when the key is pressed; “0” when it is released. (The POWER switch cannot be checked.) 2. Operate the TILT lever. If the lever is normal, “1” appears when increasing the tilt angle, “2” when decreasing the tilt angle and “0” when the lever is released. 3. Operate the trackball.
8. MAINTENANCE, TROUBLESHOOTING Color test The color test checks for proper display of colors. Press the [EVENT] key to change the screen color, in the order of white, red, green and blue. WHITE RED GREEN BLUE Color test Pattern test The pattern test displays concentric rings overlaid on a grid to test for proper display of rings and horizontal and vertical lines.
8. MAINTENANCE, TROUBLESHOOTING SIO test This test checks the input/output ports (CN-A1, NMEA1/CIF1, NMEA2/CIF2) of the processor unit. The result for the CN-A1 port is shown as OK or NG (No Good). The test for the NMEA1/CIF1 and NMEA2/CIF2 ports is for factory use. The result is always NG.
8. MAINTENANCE, TROUBLESHOOTING Echo tests Test Description Display Echo-1 The echo-1 test checks the echo display function of the monitor for proper operation, emitting artificial scan signals in 16 colors. If conducted with the COMBI-2 mode active, artificial echoes are shown in the echosounder display to test the ES interface. DISPLAY ECHO TEST PRESS [MENU] KEY TO EXIT Echo-2 The echo-2 test checks the TVG function on the PSW Board in the transceiver unit for proper operation.
SPECIFICATIONS OF COLOR SCANNING SONAR CSH-5L/8L 1 PROCESSOR UNIT 1.1 Display Mode Single scan Echo sounder combination (single scan and echo sounder) Audio combination (single scan and audio pictures) 1.2 Colors Scan/echo: 16 colors, mark: 1 color 1.3 Mark Own ship’s track, Heading line, Direction/distance, Fish school, Event, Target lock 1.
2.
4 INTERFACE 4.1 Input Data NMEA 0183 Ver1.5/2.0/2.2 GGA, RMC, GLL, VHW, VTG, HDG, HDM, HDT, DPT, DBT, DBS, CUR, VDR, GLC, GTD, MTW, RMA 4.2 Log, E/S, KP Speed log pulse (contact signal): 200/400 pulse/NM Sonde, E/S signal: VI-1100A applicable External KP: Current loop, 0 to 12V 4.3 Output Data NMEA 0183 Ver1.5/2.0/2.2 TLL 4.4 Ｖｉｄｅｏ Signal Output Method RGB analog, separated synchronization, XGA (VESA) Resolution 1024 x 768, 65.0 MHz clock Frequency of Vertical/Horizontal 4.5 60 Hz/ 48.
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MENU TREE Default settings shown in bold italics. The menu item “[MENU MODE],” which chooses a menu, is shown at the top of each menu.
MENU TREE Marks menu [MENU] key (MARKS selected from MENU MODE) RANGE RINGS (1/4R , 1/2R, OFF) BEARING SCALE (ON, OFF) CURRENT VECTOR (ON, OFF) CURRENT DIR (TO, FROM) SHIP’S TRACK (10R, 5R, OFF) COURSE (32CMPS, 360TRUE) HEADING (32CMPS, 360TRUE, OFF) CURRENT DATA (32CMPS, 360TRUE, ±180°, 360°) EVENT/FISH (32CMPS, 360TRUE, ±180°, 360°) OTHER MARKS (±180°, 360°) POSITION DATA (L/L, TD) System menu [MENU] key (SYSTEM selected from MENU MODE) AP-2 DIMMER (0-10, 10) DISP SELECT (TEMP, CURRENT) HEADING ADJ (
INDEX 2 E 2ND AGC .................................................... 2-3 Echo average ..............................................2-7 Echo tests..................................................8-12 Error messages ...........................................8-6 EVENT key ..................................................3-7 Event marks deleting ....................................................3-8 deleting all ...............................................3-9 entering...............................
