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Furuno CSH-23/24 Operator's Manual

Color scanning sonar
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COLOR SCANNING SONAR
CSH-23/24
MODEL

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Summary of Contents for Furuno CSH-23/24

  • Page 1 COLOR SCANNING SONAR CSH-23/24 MODEL...
  • Page 2 All rights reserved. All rights reserved. Printed in Japan Printed in Japan PUB.No. PUB.No. OME-13040 OME-13040 ( ( DAMI DAMI ) ) CSH-23/24 CSH-23/24 Your Local Agent/Dealer Your Local Agent/Dealer FIRST EDITION : FIRST EDITION : NOV. NOV. 1997 1997 : APR.
  • Page 3 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.
  • Page 4 10 years. Replace it when the picture be- comes difficult to see, to protect vision. A warning label is attached to the equip- ment. Do not remove the label. If the label becomes soiled or illegible, contact a FURUNO agent or dealer.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS FOREWORD A Word to CSH-23/24 Owners ... vii Features ... vii System Configuration ...viii CONTROL DESCRIPTION Control Layout on Display Unit and Remote Control Box ...1-1 Main Panel ... 1-2 Sub Panel 1 ...1-4 Sub Panel 2 (data setting window) ...1-5 Remote Control Box ...1-8...
  • Page 6 FUNCTION KEYS Programming the Function Keys ...6-1 Replaying a Function Key ...6-1 Function Key Fine Tuning ...6-2 Saving Function Key Settings to a Memory Card ...6-3 Replaying Function Key Settings from a Memory Card ...6-3 ADVANCED LEVEL OPERATION Finding Fish School Center ...7-1 Tracking a Fish School (target lock) ...7-2 Detecting Fish Schools Aurally ...7-7 The Fish Alarm ...7-8...
  • Page 7 WARNINGS Overvoltage Warning ...12-1 Unretracted Transducer Warning ...12-1 SELF TESTS Opening the Self Test Menu ...13-1 Self Test Description ...13-2 Interface Unit CS-120A Self Test ...13-5 INPUT DATA SELECTION Selection of Data at Interface Unit CS-120A ...14-1 Setting Distances Between Net Sonde Transmitters ...14-2 MAINTENANCE Display Unit Maintenance ...15-1 Hull Unit Maintenance ...15-2...
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  • Page 9: Foreword

    FOREWORD A Word to CSH-23/24 Owners Congratulations on your choice of the FURUNO CSH-23/24 Color Scanning Sonar. We are confident you will see why the FURUNO name has become synonymous with quality and reliability. For over 40 years FURUNO Electric Company has enjoyed an enviable reputation for qual- ity marine electronics equipment.

  • Page 10: System Configuration

    System Configuration viii...

  • Page 11: Control Description

    CONTROL DESCRIPTION Control Layout on Display Unit and Remote Control Box DISP SELECT EVENT TGT LOCK ESTIMATE NET COURSE FISH OFF- CENT – – GAIN RANGE AUTO TRAIN POWER TRANSDUCER NORM HIST RECALL RANGE TARGET VERT SCAN SLICE SHOOT TILT SCAN DEPTH TARGET COURSE...

  • Page 12: Main Panel

    Main Panel ] - [ POWER TRANSDUCER NORM HIST RECALL RANGE GAIN VERT TARGET SCAN SLICE SHOOT TILT SCAN DEPTH TARGET COURSE LOCK CONT EVENT1 EVENT2 ESTI- ESTI- MATE1 MATE2 OFF- FISH CENT Figure 1-2 Main panel Main panel control description .
  • Page 13 Control NORM, E/S, HIST Select display mode: NORM, normal sonar picture; E/S, Echo sounder (Mode keys) combination; HIST, Historical display. Lamp above a key lights to show current selection. RECALL, MEMO RECALL: Replays saved picture. MEMO: Saves picture to memory card or internal memory.

  • Page 14: Sub Panel 1

    MENU Opens/closes the menu. • When the menu is displayed it terminates menu operation and returns control to the sonar picture. • When in a sub menu it returns control to previous sub menu. HELP Provides operating information for current menu.

  • Page 15: Sub Panel 2 (Data Setting Window)

    Sub Panel 2 (data setting window) ITEM (TVG•TX selected) TVG•TX SIGNAL DELETE MK SONR•BEAM AUTO ALM•AUDIO OPER P-SET (TOGGLE) Item selection keys Select item. OPER P-SET key Opens/closes data setting window. Item Main Item Main TVG•TX TRANS- (Continued on next page) CURRENT SETTINGS for item selected (TVG•TX) NEAR MEDIUM...
  • Page 16 *2AGC and HOR functions cannot be used together. If one is used the other is automatically set to “0”. (Continued on next page) – 0 – 0 – 0 i t a 4 – 3 – 4 – . t n –...
  • Page 17 B • • *HOR and 2AGC functions cannot be used together. If one is used the other is automatically set to “0”. 2 – 2 " f " 2 – – 0 i t t 4 – – 0 9 – 1 "...

  • Page 18: Remote Control Box

    Remote Control Box elects which display unit to ontrol in multiple display unit stallation. ises/lowers the transducer. : Raises transducer. : Mid protrusion : Full protrusion Press to enter mark shown on key or shift screen center. Selects display range. Adjusts receiver sensitivity.

  • Page 19: Operational Overview

    OPERATIONAL OVERVIEW Turning the Power On/Off Adjusting Screen Brilliance, Control Panel Backlighting Lowering the Transducer Press d or switch. The lamp above the switch blinks during lowering of the trans- ducer and lights when the transducer is com- pletely lowered. In normal use fully lower the transducer.

  • Page 20: Selecting A Display Mode

    Selecting a Display Mode Mode NORMAL HISTORY The CSH-23/24 provides three display modes: normal sonar pic- ture, echo sounder (E/S) combination, and history display com- bination. Those modes may be selected with the NORM, E/S and HIST keys. Table 2-1 Display mode description The sonar picture appears over the entire screen.

  • Page 21: Selecting A Display Range

    Selecting a Display Range Setting the Tilt Angle Operate the RANGE control to select a display range. The se- lected range appears at the top of the screen. The tilt angle shows the direction to which the sound wave is emitted.
  • Page 22 Case 2 Figure 2-1 Fish echo and tilt angle Points to consider • Normally, a vertically distributed fish school is a better sonar target than the seabed, because it reflects the transmitted pulse back toward the transducer. • In case 3, both fish schools a and b are presented. Gener-...
  • Page 23 Tilt angle for surface fish Sound emitted from the sonar transducer forms a circle-shaped beam with a width of approximately 12 degrees 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.

  • Page 24: Suitable Tilt Angle

    20(40) 40(80) 60(120) 80(160) 100(200) 200(400) Vertical width of sonar beam 100 m 100 m 21 m 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.

  • Page 25: Adjusting The Gain

    Adjusting the Gain Measuring Range and Bearing to a Target The GAIN control adjusts receiver sensitivity (gain). Adjust it so fish echoes are clearly displayed with minimal noise on the screen. Too high a setting not only displays excess noise and makes it difficult to discriminate wanted echoes but also causes seabed echoes to be painted in strong colors, resulting in echoes being masked by seabed reflections.
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  • Page 27: Fine Tuning The Picture

    The CSH-23/24 has three TVG functions, NEAR, MEDIUM and FAR, and they mainly compensate for propagation loss on short, middle and long ranges respectively, centered at the ranges shown below.
  • Page 28 800 meters) which is approaching own ship. Adjust the tilt to keep the fish school in the center of the sonar beam, namely, fish school is displayed in strongest colors possible. Confirm that the fish echo is displayed in the same color as it approaches. If the color suddenly changes to weaker colors as the fish enters MEDIUM and NEAR ar- eas, the TVG is improperly set.

  • Page 29: Suppressing Seabed Tail

    While it is ideal to suppress seabed echoes with the AGC con- trol alone there are some fishing grounds where this is not pos- sible. (The high power sonar has the advantage of long-range detection but this can also be a disadvantage, since weaker ech- oes may be hidden in strong, unwanted echoes such as the sea- bed.)

  • Page 30: Suppressing Seabed And Sea Surface Reflections In Shallow Waters

    Figure 3-2 How to suppress seabed and sea surface reflections in shallow waters 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.
  • Page 31 CYCLE) When other sonars operate nearby at the same transmission in- terval as that of own ship’s sonar, an interference ring caused by other sonars is displayed. To erase the interference ring from the screen, reduce the CYCLE on the data setting window.

  • Page 32: Adjusting Beamwidth

    Adjusting Beamwidth Setting F-shift (data setting window: SONR•BEAM, SONAR) If interference cannot be suppressed by the interference rejector (IR) or Tx cycle, change the setting of F-SHFT from 1 to 2. Noise limiter (data setting window: SIGNAL, SIGNAL PROCESS) Weak, unwanted reflections, colored light-blue or green, appear when the water is dirty, plankton layers exists, or due to ship’s...

  • Page 33: Marks And Data

    MARKS AND DATA Marks, Data and Display Mode Normal display mode Figure 4-1 Marks and data appearing in the normal display mode...
  • Page 34 Normal display mode w/text Echo sounder combination display Figure 4-2 Marks and data appearing in the normal display mode w/text Figure 4-3 Marks and data appearing in the echo sounder display mode...

  • Page 35: Permanently Displayed Marks And Data

    Accordingly, both are equal when target lock is on. In automatic tilt, the upper indication shows the tilt angle set by the TILT lever and the lower indication the instantaneous tilt angle at which the sonar actually works. (Continued on next page)

  • Page 36: Erasable Marks And Data

    This mark moves with ship’s movement in the * true motion mode. On all other modes it is fixed at the screen center. When the CSH-23/24 is connected to a gyrocompass the mark is called * North Mark the north mark and points North.
  • Page 37 Mark/Data Latest Fish Mark These marks are inscribed on the screen by pressing the FISH key. Ten fish marks can be entered. Each time the key is pressed the fish mark appearance changes on the screen as follows: Fish Mark 1st press of FISH key 2nd press of FISH key Fish Mark...
  • Page 38 Mark With gyrocompass or speed log connection, own ship’s track is plotted *Ship’s Track Mark by a solid line. When the length of the line exceeds five times the range the oldest part of the track is erased. This mark can be displayed with current indicator input. The tidal *Tidal current marks are displayed on the net shooting mark ( Current...
  • Page 39 Mark Target Lock Mark The target lock mark automatically tracks the fish school selected by the operator. This function requires speed and gyrocompass inputs. Net Shooting Mark Press the SHOOT key at the instant you shoot the net to display the net shooting mark on the display.
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  • Page 41: Menu Overview

    MENU OVERVIEW Menu USER SYSTEM DATA SET INIT SET/TEST USER Menu Operation Many functions are carried out through the menu system, which consists of the USER, SYSTEM, DATA SET and INITIAL SET/ DATA menus. The menu you will use most often is the USER menu.
  • Page 42 2. Operate the arrow keys in sub panel 1 to select a menu. As you move through the menu, each item, initially shown as blue on gray, reverses to gray on blue to show selection. For example, select the HIST DSP/GRPH menu. 3.

  • Page 43: User Menu Description

    USER Menu Description t s i i t i (Continued on next page) Table 5-1 User menu description t e l i l a t s i c i l t s i i t s t t e i t s t s ( t s ( t t e...
  • Page 44 i t i : e l . f f i t c T " " o F " i t s i t c . "...

  • Page 45: System Menu Description

    SYSTEM Menu Description (Continued on next page) The SYSTEM menu can be displayed by pressing MENU and together. For help, press the HELP key. o i t o i t a t r : e t r a t i h t .
  • Page 46 i t s (Continued on next page) t t e i t a i t t T " . s r l l a . l l , ) l , ) e . ) t i t a i t a i t a i t a i t a...
  • Page 47 , t l s t l . s r S " e l i e t i c i t t t e i t a t t e i l e i t a " r t s i t t "...

  • Page 48: Data Set Menu Description

    DATA SET Menu Description (Continued on next page) The DATA SET menu can be displayed by pressing MENU + . For help, press the HELP key. t t e t s r i t a t i e " r i t t e t i Display...
  • Page 49 (Continued on next page) i t c t s r Before . s r e t i . c t e t i Before Display Color i l e . s r t t e i t t . s r...
  • Page 50 5-10 i t s i t a i t a t l i i t t . s r i t c , ) s , t e i t c l i t . e l i t a .

  • Page 51: Init Set/Test Menu Description

    INIT SET/TEST Menu Description (Continued on next page) The INIT SET/TEST menu can be display by pressing MENU and ON together. , t r 3 " i t a i t a " r ( " ; ) s " . i t i .
  • Page 52 5-12 r t s i t a t t i s t l s l l t l i l i t i t c . s t e t t . r e . t i i t t * Under development ;...

  • Page 53: Function Keys

    The function keys are useful for quickly setting up the so- nar for a specific purpose such as seabed detection. 1. Tune the sonar as desired. 2. Press the MENU key. 3. Select the FUNCTION KEY menu and press the MENU key.

  • Page 54: Replaying A Function Key

    Replaying a Function Key Function Key Fine Tuning FUNCTION KEY 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.

  • Page 55: Saving Function Key Settings To A Memory Card

    Fine Adjustment Item TVG Near TVG Mid TVG Far Tx Cycle Tx Beamwidth Tx Power Saving Function Key Settings to a Memory Card Replaying Function Key Settings from a Memory Card Function Key Fine Tuning 1. Press the MENU key. 2.
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  • Page 57: Advanced Level Operation

    ADVANCED LEVEL OPERATION Finding Fish School Center When you want to find the center depth of a fish school, use the auto tilt function, which automatically scans the tilt angle within the selected width. There are two automatic scan range, WIDE and NARROW, which can be selected by the INIT SET/TEST menu.

  • Page 58: Tracking A Fish School (Target Lock)

    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 sight of it on the display screen. Two types of target lock are avail- able: Target Mark or Fish.
  • Page 59 Target lock mark appearance The size and thickness of the target lock mark indicates fish speed and tracking status, as shown below. Target lock mark appearance Mark size indicates Fast relative speed. Medium Slow Mark thickness shows (More than 5 tracking status.
  • Page 60 Tilt angle is automatically changed to keep the target lock mark location within the sonar beam. 3. To stop tracking, press the [TARGET LOCK] key again. Note 1: If the target goes out of the picture or the tilt angle is greater than 60 degrees the lamp above the [TARGET LOCK] key flashes to call your attention.
  • Page 61 Setting target lock conditions 1. Open the sub panel 1. 2. Press the [MENU] key while pressing and holding down the down arrow key in sub panel 1. 3. Select TARGET LOCK with the arrow keys. 4. Press the [MENU] key. SYSTEM MENU TARGET LOCK Select item with...
  • Page 62 Description of target lock items TrackingMethod Sets target lock function: target lock mark, fish or automatic. Track Echo Color Sets minimum echo signal level to track. A fish school whose signal level is above the level set here is tracked. Fish Speed Limit Sets fish speed at which target lock is cancelled.

  • Page 63: Detecting Fish Schools Aurally

    Detecting Fish Schools Aurally Sometimes you may be preoccupied with other tasks and unable to concentrate on watching the sonar picture. In such cases it would be a good choice to use the audio function. This function enables you to monitor echoes from fish schools and seabed through the built-in speaker.

  • Page 64: The Fish Alarm

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

  • Page 65: Relocating Fish School For Easy Observation

    Relocating Fish School for Easy Observation Place trackball mark here, for example. 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.

  • Page 66: Comparing Of Fish School Concentration

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

  • Page 67: Measuring Fish School Speed

    Measuring Fish School Speed Latest fish mark To ensure a good haul, it is important to estimate the direction and speed of the fish school before shooting the net. You can do this with the FISH key. If the tidal current data is used together with fish speed data, you can determine the timing of the net shooting more efficiently.

  • Page 68: The Event Mark

    The Event Mark 7-12 Note 3: Each time the FISH key is pressed the latest fish mark and ship’s speed mark change in the sequence shown below: Fish key pressed once: Fish key pressed twice: Fish key pressed three times: Fish key pressed four times: The event mark is useful for finding the horizontal range, depth and bearing to a location some distance from current position.

  • Page 69: Entering An Event Mark

    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 the screen.

  • Page 70: True Motion Display

    Open the data setting window and select SONR•BEAM. Set UP/ TM in the SONAR menu to TM. This function requires speed and heading inputs. Although the true motion mode is available for use in all modes, use in the combination mode is not recommended since the own ship mark may move into the combination picture area.

  • Page 71: Plotting Net Location Mark

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

  • Page 72: Observing Net Behavior

    Observing Net Behavior 7-16 With net sonde connection you can observe net behavior after the 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 set those distances on NET SONDE XMTR in the DATA SET menu.

  • Page 73: Target Slice Display

    Target Slice Display e f f Using automatic tilting, the target slice mode displays the echo inside the estimate mark at several different tilt angles (depth). To access the target slice display, press the TARGET SLICE key. The table and illustration below describe the target slice mode.
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  • Page 75: Port/Starboard, Horizontal Slice Displays

    SYSTEM menu and displays them on the lower 1/3 of the screen. If the bearing width is set to 90 degrees, for example, the CSH-23/24 displays echoes in both port and starboard directions. The picture is scrolled vertically to downward.

  • Page 76: Horizontal Slice Display

    Range Mark Horizontal Slice Width Cross Cursor Own Ship Mark Horizontal slice display 120 degrees of the picture in the horizontal direction is shown for a given depth (D) in the horizontal slice window at the bot- tom of the display. The area to display may be selected with the [R/B] key.

  • Page 77: Memory Card Operations

    MEMORY CARD OPERATIONS Initializing Memory Cards Before you save information to a memory card it must be initial- ized (formatted). 1. Press the MENU key to display the USER menu. 2. Select the CARD UTILITY menu. 3. Select Initialize. It takes more than two minutes to initialize a memory card.

  • Page 78: Saving The Picture

    Saving the Picture Transferring Echo Data from Internal Memory to Memory Card You can save either the whole screen or the echo inside the esti- mate mark to the internal memory or a memory card. , e r i t s 1.

  • Page 79: Saving Net Shooting Data

    Saving Net Shooting Data How net shooting data is saved The unit starts accumulating net shooting data when the SHOOT key is pressed. When net shooting is concluded by pressing the SHOOT key again, the echo inside the estimate mark and other net shooting data are saved to the internal memory.

  • Page 80: Replaying Saved Data

    Replaying Saved Data Deleting Memory Card Contents 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);...

  • Page 81: Turning Marks, Data On/Off

    TURNING MARKS, DATA ON/OFF You can turn marks and data on or off through the data setting window or the USER menu. Turning marks on/off through the data setting window Select DELETE MK to delete the following marks: Event Mark 1 Event Mark 2 Each press of + or –...
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  • Page 83: Interpreting The Display

    INTERPRETING THE DISPLAY Seabed Echoes (A) Flat seabed Tilt angle: 10 to 15 (B) Flat seabed Tilt angle: 20 or more (C) Sloping seabed Tilt angle: 20 or more When the tilt angle is widened, the seabed echo illustrated be- low will appear on the display.

  • Page 84: Fish Schools

    11-2 A fish school appears as 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.

  • Page 85: 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 the sea surface, or adjust TVG. When a narrow tilt angle is used, sea surface reflections cover a large area as illustrated below.

  • Page 86: False Echo By Sidelobe

    Figure 11-5 Sidelobe echoes Interference from a sonar on another ship appears on the screen as shown in (A) below. This interference can be suppressed by changing the CYCLE setting in TVG•TX on the data setting window. Interference from electrical equipment on board own ship appears as shown in (B) below.

  • Page 87: Overvoltage Warning

    WARNINGS Overvoltage Warning Unretracted Transducer 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 check the ship’s mains voltage.
  • Page 88 Reset Button Breaker Main Shaft Raise/Lower Control Box Hand Crank Hull Unit Figure 12-1 How to manually raise the transducer 12-2...

  • Page 89: Self Tests

    SELF TESTS Opening the Self Test Menu The CSH-23/24 has various self tests to check it for proper op- eration. If a test reveals equipment malfunction do not attempt to check inside the equipment. There are no user serviceable parts inside the equipment.

  • Page 90: Self Test Description

    Self Test Description Single test The ROM, RAM and other devices of the display unit are checked once. Control is returned to the SELF TEST menu when the test is completed. Continuous test The devices of the display unit are checked con- tinuously.
  • Page 91 Panel test This test checks the keys of the main and sub pan- els and the remote control box. Press and release each key. Its on-screen location should display “1” when the key is pressed and “0” when released. To escape from the test reset the power.
  • Page 92 Gray test This test checks for screen distortion. To escape from the test reset the power. SIO test This test checks for proper communication between the display unit and transmitter unit, and requires a jumper plug. To escape from the test reset the power. 13-4 GRAY TEST Figure 13-6 Gray test...

  • Page 93: Interface Unit Cs-120A Self Test

    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 on the digital display beside the DIP switch. 3.
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  • Page 95: Input Data Selection

    INPUT DATA SELECTION Selection of Data at Interface Unit CS-120A Ship's speed and bearing (for track plotting, true motion, target lock, etc.) Gyrocompass, Speed log GPS or DR (Note 1) Current Indicator DR or Current Indicator (Note 2) Note 1: GPS has priority. Switched automatically from GPS to DR when Standard GPS data is absent for more than 61 seconds or ship's speed measured with setting...

  • Page 96: Setting Distances Between Net Sonde Transmitters

    Setting Distances Between Net Sonde Transmitters 14-2 To accurately display the net shooting mark and net sonde mark position, the distance between transmitters must be correctly set. This is done on the DATA SET menu. Figure 14-2 How to measure distances between transmitters How to set net sonde transmitter distances 1.

  • Page 97: Maintenance

    MAINTENANCE Display Unit Maintenance Clean the screen and filter regularly. Cover the equipment when it is not in use. An anti-static spray may be used to clean the screen. Do not use chemical-based cleaners; they can remove paint and markings. Keep magnets and cassette tapes away from the display unit.

  • Page 98: Hull Unit Maintenance

    Hull Unit Maintenance CAUTION The zinc block near the transducer must be replaced yearly. The junction between the transducer and main shaft may corrode, which can result in loss of the transducer or water leakage inside the ship. 15-2 HULL UNIT Figure 15-2 Hull unit maintenance Apply MOLYTONE grease #2 every six months.

  • Page 99: Menu Tree

    MENU TREE USER Menu USER MENU CARD UTILITY CARD ECHO DAT CARD NET DATA FUNCTION KEY DATA DISPLAY MARK DSP 1 MARK DSP 2 HIST DSP/GRPH CURRENT VEC SAVE PICTURE List Execute Save Execute Delete Execute Initialize Execute Execute Save Save Execute Register...

  • Page 100: Data Set Menu

    DATA SET Menu DATA SET MENU COLOR CURVE CHANGE COLOR NET SHOOT PLAN NET SONDE NET PLOT CORR Sonar 1 Execute Sonar 2 Execute Echo Sounder 1 Execute Echo Sounder 2 Execute Sonar 1 Execute Sonar 2 Execute Echo Sounder...

  • Page 101: Init Set/Test Menu

    INIT SET/TEST Menu INIT SET/TEST MENU HEADING ADJ BAUD RATE EXT KP UNIT/LANGUAGE SELF TEST ECHO TEST ES/NET REC DEFAULTS OTHERS Heading Adjust Setting range: 0°-359° I/F CS-120 2400, 4800 bps Aux Port 1 2400, 4800 bps Aux Port 2 2400, 4800 bps Aux Port 3 2400, 4800 bps...

  • Page 102: System Menu

    Normal Large Largest Course 32 Cmps 360 True Current Data Event Mark Other Marks Control Setting OFF Sonar TGT Lock Text Window Data 1 2 3 4 Trackball Mark +(S) +(L) Target Lock Mark Event Mark 1 Event Mark 2...
  • Page 103 SYSTEM MENU HIST DISPLAY (Continued from previous page) INTERLOCK DEFAULTS H-Slice Width 1 2 3 4 PRT/STBD Sample Setting range: 0°-180° Tilt Range Event Mark Fish Mark Net Shoot Mark Target Lock Defaults Execute...
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  • Page 105: Specifications

    SPECIFICATIONS Model: CSH-23/24-M 1. GENERAL (1) Range, TX Cycle, Pulselength " r " F NOTE 1) Transmission cycle is selectable in 10 steps. 2) External keying pulse can be used as a trigger. 3) Maximum range scale does not mean maximum range.
  • Page 106 Sonar picture (range, tilt angle, gain)Trackball mark data (slant range, horizontal range, depth, bearing), Event mark data (hori- zontal range, depth, first event marked depth,bearing), Fish mark...

  • Page 107: Hull Unit

    (6) Features 3. HULL UNIT i s i 4. POWER CONSUMPTION 5. ENVIRONMENTAL CONDITION (1) Temperature (2) Relative Humidity 6. COATING COLOR (1) Display Unit (2) Transceiver Unit and Hull Unit Custom mode, interference rejector, afterglow, noise limiter, delete color, memory card (save and recall of picture, echo inside estimate mark and net shooting data), automatic tilt, automatic target tracking *(target lock), external KP sync, heading up, north up*, fish alarm, overvoltage warning, unretracted trans-...
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  • Page 109: Index

    Overvoltage Warning ... 12-1 Port/starboard Display ... 8-1 Pulselength ... 3-3 RANGE and Bearing ... 12-7 Range Ring ... 4-5 Rejecting Sonar Interference ... 3-4 Remote Control Box ... 1-8 Saving the Picture ... 9-2 Sea Surface Reflection ... 11-3 Seabed... 2-3, 11-1 Self Test ...

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Csh-23Csh-24

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