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COLOR SCANNING SONAR
CSH-5 MARK-2
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C Your Local Agent/Dealer 9-52, Ashihara-cho, Nishinomi ya, Japan Telephone: 0798-65-2111 Telefax: 0798-65-4200 FIRST EDITION : NOV. 1995 All rights reserved. Printed in Japan E : DEC. 6, 2000 PUB. No. OME-12990 CSH-5 MARK2 (DAMI)
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SAFETY INSTRUCTIONS WARNING WARNING WARNING WARNING Keep heater away from equipment. ELECTRICAL SHOCK HAZARD Do not open the equipment. A heater can melt the equipment’s power Only qualified personnel cord, which can cause fire or electrical should work inside the shock. equipment. Use the proper fuse. Immediately turn off the power at the Fuse rating is shown on the equipment. switchboard if water leaks into the Use of a wrong fuse can result in equipment equipment or something is dropped in da
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CAUTION CAUTION Do not exceed 18 knots when operating the equipment and do not exceed 16 knots when lowering or raising the transducer. The transducer may become damaged. 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 inside the ship. Do not use the equipment for other than its intended purpose. Use of the equipment as a stepping stool, for example
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TABLE OF CONTENTS 1. FOREWORD _________________________________________ 1 2. SYSTEM CONFIGURATION _____________________________ 2 3. CONTROLS _________________________________________ 3 Operating Controls .......................................................................................................... 3 Main Panel ....................................................................................................................... 4 Control Box Panel ...................................
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9. WARNING __________________________________________ 30 Overvoltage Warning ..................................................................................................... 30 Unretracted Transducer Warning ................................................................................... 30 10. MENU ____________________________________________ 32 General .......................................................................................................................... 32 Changing
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1. FOREWORD The FURUNO CSH-5 MARK-2 Color Scanning Sonar is a full- circle,multibeam electronic scanning sonar which detects and instan- taneously displays fish schools and underwater conditions in 16 colors on a 14" non-glare, high resolution CRT screen. Its ease of operation, versatility and compact size make it the perfect match for any class of fishing vessel. Some of the prominent features of the CSH-5 MARK-2 are as fol- lows; • Compact 8" tube retraction tank • Vivid 16-color display great
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2. SYSTEM CONFIGURATION System Configuration 2
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3. CONTROLS Operating Controls The CSH-5 MARK-2 provides intuitive operation. If you change a control setting you will see the associated reaction on the screen al- most immediately. All operations are carried out from the main panel and the control box. The front panel incorporates mainly controls which do not require frequent adjustment, such as brilliance, interfer- ence rejector, and audio volume. The control box, which is connected to the display unit via a 7 m-long connection cable, houses
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Main Panel AGC suppresses the echo tail of strong targets, e.g., the seabed, for easy recognition of fish schools adjacent to the sea bottom. Position "1" or "2" is the normal setting. NOISE LIM is used to reject noise which is displayed over the screen in light blue. Position "3" is the normal setting. 4 4 6 VP (Video Processor) adjusts the after-image of the echoes for 6 proper period; echoes are stretched in the radial direction. Set 8 8 2 2 at "1" for ordinary use. 10 10 0 0 AGC NOISE
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Control Box Panel TRANSDUCER retracts and lower the transducer. The lamp above the switch flickers while the transducer is moving and lights when stopped. TX turns on the transmitter, freeze the display and turns off the transmitter. The light above the switch is on when the transmitter is turned on and flickers when off. Note: The transmitter is turned off when the transducer is retracted even if the light above the TX switch is on. MENU turns the menu display on and off. AUTO E
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EVENT EVENT displays the latest event mark “ + ” and its position data; i.e., horizontal range, depth and bearing measured from own ship’s posi- tion. (optional interface board is required to use this function.) To delete event mark, locate the cursor on a event mark you want to EVENT DELETE delete and press EVENT DELETE key. R/B R/B draws a straight line, called Bearing Mark, from own ship posi- tion mark “ ” toward the trackball mark “ ” and simultaneously to . Range draws a circle called Ran
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Menu Screen The CSH-5 MARK-2 employs four menu screens; menu-l, menu-2 and system menu. Of the four menus, the menu-2 and system menu contain preset items which do not require setting alteration if they are once set at installation. See page 32 for further details. The menu-l contains items to be set by the operator while using the sonar, taking the fishing ground and fishing method into account. This menu can be recalled on the lower part of the screen as “scan menu” during normal operation. Th
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Turning Off Scan Menu To turn off the scan menu, press the MENU key. Note: Settings for the items shown in red are locked. To unlock the settings, call up the system menu. See page 33. List of Scan Menu Items SCAN MENU ( RANGE SW : U/D GAIN SW : L/R ) ** ** HUE : 1 234 TX OUTPUT :8 PLUSELENGTH : 7 TX CYCLE : 10 TVG NEAR : 6 TVG FAR : 7 AUTO SCN WDTH : ± 10° ± 20° ± 40°± 60° AUTO TLT WDTH : ± 2°~10°± 4°~14° ± 6°~20° ± 10°~26° HOR BEAM ANGL : WIDE NARROW VER BEAM ANGL : WIDE NARROW RES COL
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AUTO SCAN Sets the scan width; ±10, ±20, ±40 or ±60 (in degrees). Use a wide WIDTH width to conduct a general search of a scan area, narrowing it once a fish school is detected. AUTO TILT WIDTH This menu is used to set the automatic tilt width (in degrees); ±2 - ±10, ±4 - ±14, ±6 - ±20, or ±10 - ±26. The two numbers in each setting shows that the width changes as the range in use changes; left number for the longest range and right one for the shortest range. HOR BEAM ANGL This menu is used to s
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4. BASIC OPERATION General This section provides information necessary for basic operation of the CSH-5 MARK-2, from turning the power on and off to detecting and tracking fish schools. The basic operating procedure is shown below. Basic Operating Procedure CONTROL SETTINGS OUTPUT 10 Location for PL 10 magnetic function TVG, (Far, Near) 5, 5 card AGC 0 NOISE LIM 3 VP 1 IR OFF 1/8 Turn power ON (OFF). 2/7 Lower/raise transducer. 4 Turn transmitter on. 5 Set tilt angle. 6 Adjust gain. 3 Select dis
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Power Off Press the TRANSDUCER “ ” switch on the control box. Wait until the lamp above the switch lights, and then press the POWER “OFF” switch. Note that the transducer automatically retracts into the tank even if the POWER “OFF” switch is pressed without raising the transducer (by pressing the TRANSDUCER “ ” switch). However, for safety purposes, it is recommended that you make a habit of press- ” switch first to ensure that the trans- ing the TRANSDUCER “ ducer is retracted. Lowering the Tra
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Seabed Echo vs Tilt Angle Case 1: Tilt Angle 30 to 40 degrees A wide tilt angle will display the entire seabed since it is captured by the full width of the beam. Case 2: Tilt Angle 10 to 20 degrees A narrow tilt angle will display only half the seabed since it is cap- tured by only the lower half of the beam. Case 3: Tilt Angle 0 to 10 degrees An exceptionally narrow tilt angle may or may not capture the sea- bed since the returning echo is weak. Example of How to Discriminate Fish Echoes from
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Points to Consider • As a general rule of thumb, a vertically distributed fish school is a better sonar target than the seabed, 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 seabed on the sonar screen. • Detection of bottom fish is difficult if they are not distributed ver- tically. Tilt Angl
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Depth 14 TILT ANGLE Tilt angle vs. Beam Coverage m Range 100 (200) 200 (400) 300 (600) 400 (800) 0° 20 (40) 40 (80) 5° 60 (120) m 80 (160) 100 (200) 10° 15° 200 (400) 300m Vertical Width of Sonar Beam 200m 100m 23m 46m 13° 68m
