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Furuno CI-80 Operator's Manual

Doppler sonar current indicator
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DOPPLER SONAR
CURRENT INDICATOR
CI-80

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Summary of Contents for Furuno CI-80

  • Page 1 DOPPLER SONAR CURRENT INDICATOR CI-80...
  • Page 2 9 - 5 2 , A s h i h a r a - c h o , N i s h i n o m i y a , J a p a n Te l e p h o n e : 0 7 9 8 - 6 5 - 2 111 Te l e f a x : 0 7 9 8 - 6 5 - 4 2 0 0...
  • 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: Table Of Contents

    PRINCIPLE OF MEASUREMENT... 1 PRINCIPLE OF MEASUREMENT, FEATURES... 1 TIDE, NAV-TIDE & TIDE DIFFERENTIAL ... 4 IMPORTANT NOTICE ON TIDE MEASUREMENTS... 8 Features ... 10 SYSTEM OVERVIEW ...11 Control Description... 11 How to Read the Displays ... 13 MAIN MENU DESCRIPTION... 16 DEP Menu ...

  • Page 5: Principle Of Measurement

    This is called Doppler Effect. The CI-80 calculates and displays movements of ship and currents at specific depths by measuring Doppler shifts obtained from three separate directions.
  • Page 6 Tide GPS satellites Water tracking speed Ground tracking speed Fixed Tide is movement of watermass at a particular depth. To know absolute tide (speed on ground), the following two data are required: Ship’s speed and course based on ground Ship’s speed and course based on measuring layer (A) Absolute tide is, then, given as a difference of these two speed vectors.
  • Page 7 Nav Tide Tide Differential Nav-Tide is an absolute movement of watermass at a particular depth, taking speed information from the external navigator (GPS) as a pseudo ground tracking speed. To calculate Nav-tide, the following two data are required: Ship’s speed and course obtained by external navigation equipment (GPS) Ship’s speed and course based on measuring layer (A) Nav-tide is, then, given as a difference of these two speed...

  • Page 8: Tide, Nav-Tide & Tide Differential

    TIDE, NAV-TIDE & TIDE DIFFERENTIAL Tide (Absolute tide) Start of trip Layer A Fixed Tide Difference = Figure 5 Absolute tide can be measured in the ground tracking mode. 10 NM (1 hour trip) (Moving at 10 kt on ground) (Moving at 3 kt on ground) Figure 6 Assume that the ship and layer A are moving in the same...
  • Page 9 Nav-Tide (Absolute tide) Tide Differential Start of trip Layer A (Moving) Layer B (Moving) 2 kt Speed of layer A based on ground (C1) can be calculated as follows: = Vg – Vwa = 10 – 7 = 3 (kt) Absolute tide can be measured in the nav-aided mode.
  • Page 10 Assuming that the ship, layer A and layer B are moving in the same direction, and ship’s speeds based on layer A (Vwa) and on layer B (Vwb) are measured as; Vwa = 8 kt (Ship’s speed based on layer A) Vwb = 5 kt (Ship’s speed based on layer B) Tide differential calculations in ground tracking mode As an absolute ship’s speed (Vg) is available in the ground...
  • Page 11 10 NM (1 hour trip) Start of trip Near- surface layer Layer A Layer B 1 kt 2 kt 5 kt End of trip :Base of measurement Assume that the ship and all measuring layers are moving in the same direction, but at different speeds.

  • Page 12: Important Notice On Tide Measurements

    (In the nav-aided mode, tide accuracy depends heavily on gyro accuracy.) SETTING SHIP’S HEADING The CI-80 has the nav-aided mode to measure absolute tides even in deep waters where ground tracking is unattainable. To achieve reliable measurements, however, you must supply accurate heading (gyro) information and ship’s position (or...
  • Page 13 0.2 kt 0.5 kt GT Mode NAV Mode GT Mode NAV Mode Figure 10...

  • Page 14: Features

    Features The CI-80 mainly consists of three units: a display unit, a transceiver unit, and a transducer, each compact enough to fit on small boats. The main features of the CI-80 are; Even in deep waters where ground (bottom) reference is...

  • Page 15: System Overview

    SYSTEM OVERVIEW Control Description Display unit (CI-800) Figure 11 Display unit Transceiver unit (CI-810) Figure 12 Transceiver unit...
  • Page 16 Control Turns the system on/off. Adjusts brilliance of display. Setting can be locked by pushing in control. BRLL Alternately selects echo display and course plot display. DISP MODE Selects tracking mode among ground tracking, water tracking, nav aided and automatic selection. MODE Opens/closes the menu.

  • Page 17: How To Read The Displays

    How to Read the Displays Echo display The CI-80 has two display modes: echo display and course plot display. A display may be selected with the DISP MODE key. Figure 13 Sample echo display...

  • Page 18: Course Plot Display

    When speed or depth data appears in red… Speed or depth data containing error appears in red. Ships speed Cannot find reference echo in respective tracking mode. Tide speed Cannot find echo in given layer. Set depth Depth set is invalid. In ground tracking mode, depth should be shallower than 7 m, or in the water tracking mode no more 3/4 of seabed depth.
  • Page 19 NOTE 2: Ship's speed and course displays are update every three seconds, in the default setting. They can be updated every second. For details, consult your dealer.

  • Page 20: Main Menu Description

    Basic Menu Operation Most major functions of the CI-80 are carried out through an easy-to-follow menu system. Two general types of menus are used: main (operation) and system (testing). Opening/closing the menu: Press the MENU key. Selecting menus: Press ◄ /...

  • Page 21: Echo Menu

    ECHO Menu Figure 16 ECHO menu TRK Menu Figure 17 TRK menu Sets up the echo display. SPEED RANGE: Sets length of tide speed vector between 0.1 and 15.0 knots, in resolution of 0.1 knots. ECHO DEPTH RANGE: Sets echo depth range. Depth can be set either manually between 50 and 300 meters in resolution of 50 meters or automatically.

  • Page 22: Mark Menu

    MARK Menu Figure 18 MARK menu AVR Menu Figure 19 AVR menu This menu sets measuring conditions for tide vector and target point mark. PRESET REFERENCE VALUE: Sets the effect of tide on the target point mark. The higher the figure, the greater the effect of tide.

  • Page 23: Operation

    Basic Operating Procedure Turning on the system Selecting operating mode 1. Turn on the transceiver unit. 2. Turn on the display unit. 3. Adjust brilliance of display. The display unit conducts a check of the system, displaying the results about 40 seconds after turning on the power. Figure 20 Display unit and transceiver unit Press the MODE key to select operating mode among water tracking, ground tracking, or automatic selection.

  • Page 24: Setting Measuring Depths

    Setting measuring depths Ground Tracking Mode: Shows absolute ship and tide movements based on ground. (Bottom echo required.) Water Tracking Mode: Shows movements of ship and tide relative to near-surface water. Nav-aided Mode: Shows ship’s movement measured by the external navigation equipment, and the tide movements based on the nav speed data.
  • Page 25 Setting tide differential layer Turning off the power 1. On the DEP menu, press DIFFERENCE. 2. Press to set layer. Figure 22 How to set tide differential Press the power switch on the display unit. to select REF TIDE...

  • Page 26: Setting Tide Measuring Depths On The Echo Display

    Setting Tide Measuring Depths on the Echo Display Selecting a layer, setting depth Earlier you learned how to set tide measuring depths on the DEP menu. Measuring depths can also be set directly on the echo display. 1. On the echo display, press Selected layer’s depth indication changes from white to orange.

  • Page 27: Setting Up The Echo Display

    Setting up the Echo Display Setting tide speed vector range Setting echo depth range Setting echo intensity Registering settings, closing the menu Press the MENU key. ► 2. Press ◄ / to select the ECHO menu. 3. Press to select SPEED RANGE.

  • Page 28: Setting Up The Course Plot Display

    Setting up the Course Plot Display Setting the plot range Setting plot orientation Setting tide vector plotting interval The course plot display mainly plots ship’s track. It can be displayed by pressing the DISP MODE key. Figure 25 Sample course plot display, TRK menu 1.

  • Page 29: Marks

    Marks Event mark Target point mark The CI-80 has two types of marks which can be inscribed on the display: event mark and target point mark. Figure 27 Appearance of event mark and target point mark The EVENT key inscribes present position on the display. It is useful for marking important locations, etc.

  • Page 30: Calculating Trip Distance

    Erasing marks Calculating Trip Distance Calibrations (offsets) Opening the system menu 1. Press the CURSOR ON/OFF key. 2. Operate the four arrow keys to place cursor on mark to erase. 3. Press the EVENT key (or TARGET POINT key). Press the TRIP key to start calculation of trip distance from present position.

  • Page 31: Water Speed Display Setting

    Displaying the CALB menu MODE CALB GT SPD CALIB [-12.8~12.7] WT SPD CALIB [-12.8~12.7] DRAFT LEVEL [0.0~50.0] BEARING CALIB [-12.8~12.7] COURSE CALIB [-12.8~12.7] *1: Shown when current (tide) processor is active. Figure 30 CALB menu Water Speed Display Setting ► 1.

  • Page 32: Nav Data Setting

    Nav Data Setting MODE CALB SELF TEST OFF SYS DEMONSTRATION WATER SPEED NAV DATA *1: Shown when tide processor is active. Figure 31 MODE menu 1. Press the DISP MODE key to display the echo display. 2. While pressing and holding down the TRIP key press the MENU key.

  • Page 33: Maintenance & Troubleshooting

    MAINTENANCE & TROUBLESHOOTING Preventive Maintenance Regular checks Cleaning of units Regular maintenance is important for continued performance. Check the following on a monthly basis. Check that all connectors and cables are securely tightened. Check grounding systems of units for corrosion. Also regularly measure voltage to confirm that it is within prescribed rating.

  • Page 34: Troubleshooting

    Troubleshooting If… Then… power is on but nothing adjust BRILL control. appears on the display check power cable. check for loosened power connector. check for blown fuse. nothing appears on the check that transceiver unit is turned on. echo display check power cable and connector on transceiver unit for tight connection.

  • Page 35: Self Tests, Demonstration Display

    *1: Shown when tide processor is active. Figure 32 MODE menu The CI-80 has four self tests and a demonstration display which check the system for proper operation. 1. Press the DISP MODE key to select the echo display. 2. While pressing and holding down the TRIP key, press the MENU key.
  • Page 36 MODE CALB SELF TEST OFF SYS ECHO PNL DEMONSTRATION WATER SPEED NAV DATA *1: Shown when tide processor is active. Figure 33 MODE menu Starting the demonstration display The demonstration display checks the controls on the display unit and conducts a loopback test between the display unit and the transceiver unit.

  • Page 37: Self Test Results

    Self Test Results System test Test Prog. ROM test Data ROM test Memory test The system test check results appear at each power on or whenever the system check is conducted though the self test. SYSTEM CHECK ---------CI-800--------- IP VOL 66503001** IP DSW “00 00”...

  • Page 38: Error Display

    Error display Table 3 Error number display and meaning Error Reason number Input voltage Overheated transducer element Abnormal Tx B voltage Tx voltage of beam 1 Tx voltage of beam 2 Tx voltage of beam 3 Tx current of beam 1 Tx current of beam 2 Tx current of beam 3 External position data...

  • Page 39: Panel Test

    Echo test Panel test Checking echo display intensity Press the right and left arrow keys. The SHIFT indication should change with key operation, between 0 and 100. Checking echo display range Press the up and down arrow keys. The echo display range should in steps of 50 between 0 and 300.

  • Page 40: Menu Tree

    MAIN MENU ECHO MARK SYSTEM MENU MODE CALIB MENU TREE LAYER1 LAYER2 LAYER3 REF TIDE DIFFERENCE SPEED RANGE ECHO DEPTH RANGE ECHO LEVEL SHIFT PLOT RANGE PLOT MODE TRACK DISPLAY PRESET REFERENCE VALUE TIDE HISTORY SHIP SPD AVR TIDE AVERAGE WT SPD DEPTH SELF TEST DEMONSTRATION...

  • Page 41: Specifications

    SPECIFICATIONS OF CI-80 DOPPLER SONAR CURRENT INDICATOR General (1) Ground tracking acquirable depth (2) Measurable tide range (3) Measurable tide depth (4) Measurable ship's speed (5) Measurable tide speed (6) Tide differential range (7) Measuring accuracy (8) Number of beams...

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