Furuno CSH-7 manual

COLOR SCANNING SONAR MODEL CSH-7[...]

FIRST EDITION : MAY 1997 Your Local Agent/Dealer FURUNO ELECTRIC C O . , LT D . c 9-52, Ashihara-cho, Nishinomiya, Japan 662 Telephone: 0798-65-2111 Telefax: 0798-65-4200 All rights reserved. Printed in Japan PUB. No. OME-13020 CSH-7 (DAMI)[...]

i i i i i i i i i i i i i i SAFETY INSTRUCTIONS Do not disassemble or modify the equipment. Fire, electrical shock or serious injury can result. Turn off the power immediately if water leaks into the equipment or the equip- ment is emitting smoke or fire. Continued use of the equipment can cause fire or electrical shock. Do not place liquid-filled [...]

ii T ABLE OF CONTENTS FOREWORD A W ord to CSH-7 Owners ........................................................................................................ v Features ..................................................................................................................................... v System Configuration ......................[...]

iii INTERPRETING THE DISPLA Y Seabed Echoes .................................................................................................................. ..... 6-1 Fish Schools ........................................................................................................................... 6-2 Sea Surface Reflections ................[...]

iv FOREWORD A Word to CSH-7 Owners Congratulations on your choice of the FURUNO CSH-7 Color Scanning Sonar . W e 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. This dedication [...]

v System Configuration CSH-7040 TRANSCEIVER UNIT RECTIFIER RU-3424 100-115 VAC/ 200-230 VAC 1 φ , 50/60 Hz Ship’s Mains 24 VDC HULL UNIT 600 mm stroke 400 mm stroke CSH-7030 CSH-7031 * Interface Module CSH-7050 (option) required to connect external equipment. DISPLAY UNIT CSH-7010 (*) NAVIGATOR CURRENT INDICATOR GYROCOMPASS SPEED LOG TILT RANGE [...]

1-1 OPERA TIONAL OVER VIEW Equipment Overview All operations of the CSH-7 are carried out through the display unit and the remote controller (option). The uncluttered, straight- forward control panel of the display unit provides intuitive op- eration. If you change a control setting you will see the associated reaction on the display almost immedia[...]

1-2 Display Unit Control Panel Description GAIN TILT MENU F1 F2 R B – + – + TX d c Turns transmitter on/off; freezes the display. The lamp above the switch lights when the transmitter is turned on and flickers when off. Selects a picture display range. Also functions to select items on menu screens. Note that this control turns endlessly in bot[...]

1-3 Adjusting Screen Brilliance, Control Panel Backlighting The BRILL control adjusts screen brilliance, and the DIMMER control adjusts control panel backlighting. Lowering the T ransducer Press the d switch. The lamp above the switch blinks, and lights when the transducer is fully lowered. CAUTION Do not exceed speed noted in the speci- fications [...]

1-4 Seabed echo and tilt angle Case 1: T ilt angle 30 to 40 degrees This tilt angle will display the entire seabed since it is captured by the full width of the beam. Case 2: T ilt angle 10 to 20 degrees This tilt angle will only display half the seabed since it is only captured by the lower half of the beam. Case 3: T ilt angle 0 to 10 degrees Thi[...]

1-5 Points to consider • Normally , a vertically distributed fish school is a better sonar tar get 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- ally speaking, however , midwater fish schools tend to be larger than bottom fish schools and they[...]

1-6 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. 100 (200) 200 (400) 300 (600) 400 (800) Range (m) 0° 5° 10° 15° 20(40) 40(80) 60(120) 80(160) 100(200) 200(400) Vertical width of sonar beam 16° 28[...]

1-7 Adjusting the Gain The GAIN control adjusts receiver sensitivity (gain). Adjust it so fish echoes are clearly displayed with minimal noise on the screen. T oo 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 [...]

2-1 MARKERS AND DA T A Standard Markers and Data R T G B ° R ° B Bearing of bearing marker Range to range marker Range ring Range marker Bearing marker Range Tilt Trackball marker data Slant range Horizontal range Depth True bearing Trackball marker Heading marker Own ship marker Heading data (Requires INTERFACE Board and gyrocompass.) (M) Unit o[...]

2-2 T able 2-1 Standar d markers and data description Marks position on the screen. Direction of arrow is heading. Range Rings Range and Bearing Marker Data R ° B Trackball Marker The trackball marker selects location for markers and own ship’s position. The trackball moves the marker over the entire screen. Trackball Data → ↓ B ° Trackball[...]

2-3 Optional Markers and Data V arious markers and data are available with connection of the INTERF ACE Board and appropriate external equipment. Optional markers and data in the normal mode 184 16 ( 199) B E/N 187 186 16 B 23°S E/N R 300 T 5° G 3.0 E S W 300 N 3 2 1 Trackball marker data Tidal current marker Own ship event marker Course line Ele[...]

2-4 Optional markers and data in the normal plus text mode 367 38 ( 165) B 283° R 313 B 7°P S C D T 496 493 51 B 52°S NW/N R 800T T 5° G 4.0 N S W 3 2 1 Heading indication Latest event marker data 0.0 NW/W 174 17.0 34: C1: C2: C3: 13.02N 135: 16.39E 1.1 315° 0.6 25° 1.2 64° Position Past event marker Tidal current data Nav data Latest event [...]

2-5 T able 2-2 Optional markers and data description Latest Event Marker Data → ↓ () B ° Tidal Current Data C1: . C2: . C3: . Course Line Marker Electronic Bearing Scale The position data of the latest event marker, that is, horizontal range ( → ), current depth ( ↓ ) and bearing. ( ) shows the latest event marker’s original depth, and r[...]

3-1 MENU OVER VIEW The menu system consists of four menus: Scan menu, Menu-1, Menu-2, and System. The Scan menu can be opened while trans- mitting, and contains items which the user will often change during the course of operation. Menu-1 (similar to the Scan menu), Menu-2 and System menus can be opened with the trans- mitter turned off. Menu-2 and[...]

3-2 3. Operate the RANGE control to scroll the menu and select item. The selected item is highlighted in green and current setting in white. 4. Operate the GAIN control to change setting. 5. Press the MENU key to register selections and close the menu. Note: Gain or range cannot be changed while the Scan menu is displayed. Scan menu description T a[...]

3-3 T able 3-1 Scan menu description (con’ t.) m e t In o i t p i r c s e D R I o h c e r e h t o y b d e s u a c e c n e r e f r e t n i d n a e s i o n m o d n a r s t c e j e R . s r a n o s r o s r e d n u o s E S A R E K R A M. e n i l e s r u o c r o s r e k r a m p i h s n w o l l a s e s a r E L G N A M A E B R O H ; e s u l a r e n e g r[...]

3-4 Displaying menu-1, menu-2, system menu 1. Press the TX switch to blink the lamp (transmitter of f state) above it, if it is not already blinking. 2. Press the MENU key . The last-used menu among Menu-1, Menu-2, and System appears. The menu below is Menu-1. ** MENU - 1 ** (RANGE SW: U/D GAIN SW: L/R) DISPLAY MODE TX OUTPUT PULSELENGTH TX CYCLE T[...]

3-5 This menu contains the same items as the Scan menu. See page 3-2 for description. Menu-2 description ** MENU - 2 ** (RANGE SW: U/D GAIN SW: L/R) EXT KP SYNC RANGE MARKER BEARING SCALE CURRENT MARK COURSE MARK HEADING INDI CURRENT INDI EVENT INDI MARK INDI POSITION DATA MENU MODE : MENU - 1 MENU - 2 SYSTEM : OFF : 1/4R : ON : ON : 10R : 32 - AZI[...]

3-6 System menu description ** SYSTEM MENU ** (RANGE SW: U/D GAIN SW: L/R) MENU MODE : MENU - 1 MENU - 2 SYSTEM : 0 ° : METERS : LOG/GY : 200 : 4800 : CIF : 4800 : GPS :L A : LOCK : OFF : ENGLISH : SINGLE CONTI : EXECUTE FATHOMS NAV 1200 NMEA182 1200 DEC ESPANOL COLOR ECHO-1 PA/BRA DR DANSK GRAY ECHO-2 # # # # # # # # # # Requires INTERFACE Board.[...]

4-1 FINE TUNING THE PICTURE Eliminating Unwanted Feeble Echoes Echoes from targets such as seabed and fish return to the trans- ducer 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. The sonar operator will [...]

4-2 4. Locate a fish school on a long range setting which is ap- proaching 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 sud- denly changes to weaker colors as [...]

4-3 fish echoes from seabed reflections. Decrease the PULSELENGTH setting on the Scan menu to shorten the pulselength. For search of surface and midwater fish in which seabed reflections are not so strong, use the longest pulselength “10”. Suppressing Seabed and Sea Surface Reflections in Shallow W aters In shallow fishing grounds with hard or [...]

4-4 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 . Identifying noise source T o eliminate noise effectively[...]

4-5 Rejecting interference with TX 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. T o erase the interference ring from the screen, reduce the TX CYCLE setting on the Scan menu. Interference TX CYCLE High TX CYCLE Lowered Figur e 4-[...]

5-1 ADV ANCED OPERA TION Measuring the Range and Bearing to a T arget Operate the trackball to place the trackball marker (+) on the target you want to measure the range and bearing. The range and bearing are displayed at the top left corner on the screen. B Slant range Horizontal range Depth Bearing Trackball marker Figur e 5-1 Location of range a[...]

5-2 Trackball marker Bearing marker Figur e 5-2 Ar ea monitor ed in audio function (sample) Relocating Fish School for Easy Observation When a fish school is located near the edge of the screen and inconvenient for observation, use the off-center function to re- locate the fish school to the desired place on the screen. Fish echo Fish echo OFF CENT[...]

5-3 Function Keys (F1, F2) Function keys F1 and F2 work like the auto dialing feature on a telephone, instantly calling out desired settings to perform spe- cially assigned functions. These keys provide optimum sonar settings for a specific purpose with a single key operation. Each function key can be assigned a combination of particular sonar sett[...]

5-4 Programming user programs 1. Press the TX switch to blink the lamp above it, if it is not already blinking. 2. Press the MENU key and select Menu-1. 3. Using the RANGE and GAIN controls, set menu options as desired. 4. Operate the RANGE control to select USER PROG. 5. Operate the GAIN control to select USER1 (for F1 key) or USER2 (for F2 key). [...]

5-5 Event Markers, Own Ship Event Markers The event marker denotes important items on the display , such as a fish school, and the own ship event marker marks own ship position. T en event markers and ten own ship event markers may be entered. The CSH-7 denotes the latest event marker as and other event markers as +. The own ship event marker is a [...]

6-1 INTERPRETING THE DISPLA Y Seabed Echoes When the tilt angle is widened, the seabed echo illustrated be- low will appear on the display . When the tilt is narrowed, the seabed trace becomes wider and weaker . By observing the sea- bed condition on the display , the skipper can prevent net dam- age. (A) Flat seabed Tilt angle: 10 ° to 15 ° (B) [...]

6-2 Fish Schools 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. T o 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, bottom fish Tilt angle: 30 ° or more Fish echo[...]

6-3 Sea Surface Reflections T o 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 . Sea surface Sea surface Tx 16 ° Rx 19 ° Tilt angle indication Sea[...]

6-4 False Echo by Sidelobe An ultrasonic wave is emitted only in the direction set by the TIL T lever , however there are some emissions outside the main beam. These are called sidelobes. The ennergy of the sidelobe is fairly weak but when the water is comparatively shallow and the bottom is rocky and hard, strong signals are detected by the sidelo[...]

7-1 MAINTENANCE Do not work inside the equipment unless totally familiar with electrical circuits. Hazardous voltage which can cause electrical shock, burn or serious injury exists inside the equipment. WARNING Display Unit Maintenance Keep magnets and cassette tapes away from the display unit. Handle the equipment with care. Damage can cause corro[...]

7-2 Hull Unit Maintenance HULL UNIT Raise transducer and coat main shaft with DAPHAECOROAEX #2 every six months. Apply MOLYTONE grease #2 every six months. Dry dock ship and clean transducer face yearly. Apply single coat of "MARINE STAR 20 Mod (Red-N)" anti-foulant to transducer face to keep marine life off the transducer. Figur e 7-2 Hu[...]

8-1 TROUBLESHOOTING Do not work inside the equipment unless totally familiar with electrical circuits. Hazardous voltage which can cause electrical shock, burn or serious injury exists inside the equipment. WARNING When the T ransducer Cannot be Retracted When the transducer cannot be completely retracted within 35 seconds after pressing c , XDCR N[...]

8-2 Breaker ON/OFF state ON OFF Breaker DOWN command LED (Red) POWER ON/OFF LED (Green) Hand crank Shaft gear Motor gear 8A Cable gland POWER switch Breaker (Bottom view) How to use the hand crank 1. Turn off the POWER switch on the hull unit. 2. Remove gear cover. 3. Attach hand crank to shaft gear or motor gear. Hand crank Shaft gear Tighten scre[...]

8-3 Diagnostic T ests This unit has eight diagnostic test which check it for proper op- eration. These tests are mainly for use by service technicians, however the user may execute them to identify possibly defec- tive components. Starting, quitting diagnostic tests 1. Press the MENU key . 2. Operate the GAIN control to select the System menu. 3. O[...]

8-4 Note: When the transducer is fully lowered, pressing the MENU key at the diagnostic test raises the transducer . Panel test This test checks the control panel for proper operation. PANEL TEST PRESS [MENU] 2 or 3 SECONDS TO STOP SELFCHECK Press each control one by one. Corresponding figure changes if control is normal. 000 0 0 00 0 00 00 0 000 X[...]

8-5 Figur e 8-4 Color test display Gray test This test checks for proper display of monochrome characters and markers. Concentric rings and a monochrome test bar are displayed. PRESS [MENU] 2 or 3 SECONDS TO STOP SELFCHECK ..... ... GRAY TEST Figur e 8-5 Gray test display Conti test This test continuously checks the display and transceiver units. I[...]

8-6 Figur e 8-6 Results of continuous test SIO test This text checks transceiver unit input and output. SIO TEST MAIN I/F SIO1 SIO-NAV SIO-CI = OK = NG = NG PRESS [MENU] 2 or 3 SECONDS TO STOP SELFCHECK For service technicians; special test connector required to check. NG appears when no test connector is connected. Figur e 8-7 Results of SIO test [...]

8-7 Figur e 8-8 Echo-1 test display Echo-2 test This test checks echo processing circuits in the display unit and transceiver unit. PRESS [MENU] 2 or 3 SECONDS TO STOP SELFCHECK TRX ECHO TEST Figur e 8-9 Echo-2 test display Note: Appearance of above test pattern may vary slightly depending on the frequency or internal settings.[...]

9-1 SPECIFICA TIONS Model CSH-7-xx (55: 55 kHz, 70: 70 kHz) Display Display PPI display on 10" non-glare high resolution CR T Display color 16 colors according to echo strength Display mode Normal, *Normal plus text Display resolution 512 x 384 dot Markers, indications Own ship marker, Heading marker , T rackball marker , *Own ship event marke[...]

9-2 Range, TX cycle, pulselength Range, range display 1. Ranges shown for off-center on ar e maximum. 2. Fish school may not be detected depending on its natur e or sea conditions, even if it is located within the display range in use. Pulselength 0.5 to 10 msec, interlocked with range, eleven settings TX cycle 0.2 sec to 4.0 sec, interlocked with [...]

9-3 Tilt Angle T ilt beam angle 0 ° to 55 ° , continuously variable Hull Unit Power Supply, Power Consumption 24 VDC, 160 W (average), maximum 280 W (ship’ s speed 16 knots, raising transducer) (100 V AC operation with optional rectifier) Color Display unit Panel: N 3.0 Newtone No. 5, Cover: 2.5GY 5/1.5 T ransceiver unit, hull unit Munsell 2.5G[...]