Page 3 - IMPORTANT NOTICES; This manual is intended for use by native speakers of English.
i IMPORTANT NOTICES • This manual is intended for use by native speakers of English. • No part of this manual may be copied or reproduced without written permission. • If this manual is lost or worn, contact your dealer about replacement. • The contents of this manual and equipment specifications ar...
Page 4 - ii; SAFETY INSTRUCTIONS; ELECTRICAL SHOCK HAZARD; Do not open the equipment.; WARNING; Keep heater away from equipment.
ii SAFETY INSTRUCTIONS WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment. Only qualified personnelshould work inside theequipment. Immediately turn off the power at theswitchboard if water leaks into theequipment or something is dropped inthe equipment. Continued use of the equipment can cau...
Page 5 - iii; CAUTION; WORKING WITH THE SONAR OIL; Emergency procedures; WARNING LABELS
iii CAUTION Do not exceed 20 knots when operatingthe equipment and do not exceed 15knots when lowering or raising thetransducer. The transducer shaft may become damaged. Do not use the equipment for otherthan its intended purpose. Wrongful use of the equipment may resultin personal injury or damage ...
Page 6 - iv; TABLE OF CONTENTS; ix; the
iv TABLE OF CONTENTS FOREWORD ....................................................................................................................... v i i SYSTEM CONFIGURATION ............................................................................................ ix 1. OPERATIONAL OVERVIEW ......
Page 8 - vi
TABLE OF CONTENTS vi 4.10.4 Resolution color .............................................................................................4-11 4.10.5 Suppressing clutter ........................................................................................4-12 5. MENU OPERATION ......................
Page 9 - vii; FOREWORD; Features; High definition active matrix color LCD.
vii FOREWORD Thank you for purchasing the CH-270 Color LCD Searchlight Sonar. We are confident you will discover why FURUNO has become synonymous with quality and reliability. Dedicated in the design and manufacture of marine electronics equipment for more than half a century, FURUNO Electric Compan...
Page 10 - viii; Usage Precautions
FOREWORD viii Usage Precautions • The Motion Sensor MS-100 compensates for ship’s pitching and rolling. However, it does not compensate for load unbalance. Use Clinometer BS-704 if compensation for load unbalance is required. • If the equipment will not be used for a long time, shut off the power to...
Page 11 - SYSTEM CONFIGURATION; Speaker
ix SYSTEM CONFIGURATION CH-270 (350 stroke) HULL UNIT SPEAKER DATA/VIDEO OUT MOTION SENSOR 12-32VDC 12-32 VDC Speaker Motion Sensor ExternalMonitor Control Unit DisplayUnit Navigator CONTROL UNIT CH-252 DISPLAY UNIT MU-100C TRANSCEIVER UNIT CH-273 INTERFACE UNITIF-8000 RemoteController HULL UNIT CH-...
Page 13 - OPERATIONAL OVERVIEW; Description; Control unit
1-1 1. OPERATIONAL OVERVIEW 1.1 Control Description GAIN SECTOR TRAIN RANGE TILT MAIN SUB FULL HALF FAST SCAN BRILL TARGET MENU R/B EVENT CUSTOM MODE DISPLAY MODE POWER XDR Turns the power on/off. Lowers the transducer. Adjusts receiversensitivity. Chooses center bearing of training sector. Chooses ...
Page 14 - Controller; Remote controller
1. OPERATIONAL OVERVIEW 1-2 1.2 Remote Controller The Remote Controller CH-256 (option) provides armchair control over range, tilt, target lock and training range. Choose tilt angle. Enables/disablestarget lock. Chooses training range.for full circle 360 ° (horizontal mode) or half circle 180 ° (ver...
Page 15 - on; Startup display; Language selection screen
1. OPERATIONAL OVERVIEW 1-3 1.3 Turning the Power On/Off 1.3.1 Power on Press the [POWER] switch on the control unit until you hear a “click.” A beep sounds, the lamp above the switch lights and the startup display appears (for four seconds). M O D E L : C H - 2 7 0 1 8 0 k H z Startup display Note ...
Page 16 - off; Transducer status indicator
1. OPERATIONAL OVERVIEW 1-4 1.3.2 Power off 1. Press the [ © ] switch on the control unit. The lamp above the switch blinks while the transducer is being raised and lights steadily when it is fully raised. 30 25 Transducer status indicator• Up arrow is filled when transducer has been retracted into ...
Page 17 - With the boat at the fishing ground, press the [; the transducer can be automatically raised when the ship’s speed
1. OPERATIONAL OVERVIEW 1-5 1.4 Raising, Lowering the Transducer 1.4.1 Lowering the transducer With the boat at the fishing ground, press the [ ª ] switch to lower the transducer. The lamp above the switch blinks while the transducer is being lowered and lights when it is completely lowered. The dow...
Page 18 - Choosing a Display; Display modes
1. OPERATIONAL OVERVIEW 1-6 1.5 Choosing a Display This sonar has eight display modes and you may choose one with one of the DISPLAY MODE keys. Refer to the chapter shown in the illustration for more information about each mode. Water temp/depth Key Key VERTICAL SCAN Vertical section of underwater c...
Page 19 - Adjusting Screen Brilliance, Panel Dimmer; Brilliance, panel dimmer dialog box; How to adjust the gain
1. OPERATIONAL OVERVIEW 1-7 1.6 Adjusting Screen Brilliance, Panel Dimmer Screen brilliance can be adjusted in nine levels and the panel dimmer (backlighting) in four. 1. Press the [BRILL] key to open the dialog box for screen brilliance and panel dimmer. Do the next step within four seconds; otherw...
Page 20 - Basic Menu Operation; COM2 menu; Dialog box for deleting track
1. OPERATIONAL OVERVIEW 1-8 1.8 Basic Menu Operation The menu, consisting of seven menus, mostly contains items which once preset do not require frequent adjustment. Below is the procedure for basic menu operation. 1. Press the [MENU] key to open the menu. The last-used menu is displayed. (In the ex...
Page 21 - Overview
2-1 2. HORIZONTAL MODE 2.1 Operational Overview The figure below shows the typical horizontal mode operating sequence. GAIN SECTOR TRAIN RANGE TILT MAIN SUB FULL HALF FAST SCAN BRILL TARGET MENU R/B EVENT CUSTOM MODE DISPLAY MODE POWER XDR 2. Lower the transducer. 9. Adjust gain. 6(a). Set scanning ...
Page 22 - Typical Horizontal Mode Display; Typical horizontal mode display
2. HORIZONTAL MODE 2-2 2.2 Typical Horizontal Mode Display 25 R 40 mT 40 ° 1613 B208 ° + CSE 357 ° SPD 9.9 kt DEP 35 m TMP 12.3 ° C CUR 11.0˚ 2.0 kt GAIN 5.3 TVG LEVEL 4.0DISTANCE 200 mCOLOR 34 ° 12. 343' N 134 ° 34. 213' W 98 B7 ° 16 B234 ° Cursor data Train indicator Sector marker Range Tilt angle...
Page 23 - How to choose the range
2. HORIZONTAL MODE 2-3 2.3 Choosing the Range The [RANGE] control chooses the detection (display) range. Choose the range according to either the fish species being searched or the depth desired. 15 ranges are available. SEA SURFACE Range indicatedon the screen. BOTTOM SEA SURFACE Range indicatedon ...
Page 24 - Choosing Sector Width; Display sector; One-touch selection of 360; How the FULL/HALF key works
2. HORIZONTAL MODE 2-4 2.4 Choosing Sector Width Sector means the width of the transducer training. The [SECTOR] control chooses the training (display) area among the sixteen positions shown in the table below. Clockwise rotation of the control increases the sector width; counterclockwise rotation d...
Page 25 - Choosing Train Center; in increments of 6; Train center
2. HORIZONTAL MODE 2-5 2.5 Choosing Train Center The [TRAIN] control chooses the center direction of the detection range. The range of adjustment is 0 ° to 354 ° in increments of 6 ° . The chosen bearing is shown with a filled circle, the train indicator, on the bearing scale. 0 ° (360 ° ) → 6 ° → 1...
Page 26 - and when emitted vertically, 90; Sounding beam and tilt angle
2. HORIZONTAL MODE 2-6 2.6 Choosing the Tilt Angle 2.6.1 Choosing the tilt angle The tilt angle shows the direction to which the sound wave is emitted. When the sound wave is emitted horizontally, the tilt angle is said to be 0 ° and when emitted vertically, 90 ° . To set a tilt angle, operate the [...
Page 27 - Relation between tilt angle and echo; Case 1: Tilt angle 30; This tilt angle will display the entire bottom since it is; Case 2: Tilt angle 10; This tilt angle will only display half the bottom since it is only
2. HORIZONTAL MODE 2-7 2.6.2 Relation between tilt angle and echo Refer to the illustration below to see the relation between tilt angle and bottom echo. Case 1: Tilt angle 30 °°°° to 40 °: °: °: °: This tilt angle will display the entire bottom since it is captured by the full width of the beam. Ca...
Page 28 - Points to consider; Tilt angle
2. HORIZONTAL MODE 2-8 Points to consider • Normally, a vertically distributed fish school is a better sonar target than the bottom, because it reflects the transmitted pulse back toward the transducer. • In case 3, both fish schools “a” and “b” are presented. Generally speaking, however, midwater f...
Page 29 - Tilt angle and beam coverage
2. HORIZONTAL MODE 2-9 2.6.4 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...
Page 30 - Choosing the Training Speed; ): 60 transmissions required to complete the full 360; Finding Echo Position with the Cursor; Location of cursor position data
2. HORIZONTAL MODE 2-10 2.7 Choosing the Training Speed The training speed determines how fast the transducer scans the sounding sector. Two choices are available, normal speed and high speed, and one may be chosen with the [FAST SCAN] key. Each time the key is pressed, “NORM” (normal speed) or “FAS...
Page 31 - Marker; The tilt angle must be; How to use the event marker
2. HORIZONTAL MODE 2-11 2.9 Event Marker The event marker functions to mark important locations on the screen, and five may be inscribed. Each time the [EVENT] key is pressed the “latest event marker” ( ⊕ ) is inscribed at the cursor location and all previously entered event markers are shown by the...
Page 32 - seconds otherwise the dialog box will be erased.; to choose YES and then press the [MENU] key. All event markers are then; Depth and Horizontal Range Markers; Range and bearing markers
2. HORIZONTAL MODE 2-12 2.9.2 Deleting all event markers All event markers can be erased from the screen as follows: 1. Operate the Omnipad to place the cursor outside the display area. 2. Press the [EVENT] key to show the following dialog box. Do the next step within four seconds; otherwise the dia...
Page 33 - Adjusting the Picture; Suppressing bottom and surface reflections; to choose MENU and then press; COM1 menu
2. HORIZONTAL MODE 2-13 2.11 Adjusting the Picture 2.11.1 Suppressing bottom and surface reflections In shallow fishing grounds, excessive sea surface and bottom reflections often interfere with wanted fish echoes and they cannot be eliminated sufficiently with the TVG controls. In such cases, try t...
Page 34 - How TVG works
2. HORIZONTAL MODE 2-14 2.11.2 Suppressing bottom tail As described earlier, fish schools near the bottom are sometimes difficult to detect because you have to discriminate fish echoes from the bottom reflections. To discriminate fish echoes near the bottom, choose the short Tx pulselength on the CO...
Page 35 - HORZ menu
2. HORIZONTAL MODE 2-15 To adjust TVG: 1. Press the [MENU] key to open the menu. 2. Press ▲ to choose MENU and then press ◄ or ► to choose HORZ. TVG LEVEL 4.0 TVG DISTANCE 4.0 GAIN ADJUST 0 RES. COLOR LOG CLUTTER 0 TARGET KEY REVERSE : S E L E C T : CHANGE MENU: END MENU COM1 VERT ES PRESET SYS COM2...
Page 36 - then press; or
2. HORIZONTAL MODE 2-16 5. Press the [MENU] key to register your selection and close the menu. 6. To suppress reflections from the sea surface or plankton, choose TVG LEVEL and then press ► . 4.0 200 m TVG LEVEL Hi Lo GAIN 7. Press ◄ or ► to adjust TVG LEVEL, considering sea conditions. The setting ...
Page 37 - COM 2 menu; Signal level dialog box
2. HORIZONTAL MODE 2-17 2.11.4 Erasing weak echoes Weak echoes such as interference can be erased from the screen. This is useful when you want to observe a fish school echo. 1. Press the [MENU] key to open the menu. 2. Press ▲ to choose MENU. 3. Press ◄ or ► to choose COM2. DELETING TRACK NO WHITE ...
Page 39 - To activate the manual reverse mode:
2. HORIZONTAL MODE 2-19 2.12 Target Lock Three types of target lock modes are available. Manual reverse: The transducer train direction is reserved manually. This is the default target lock function setting and it may be used in both horizontal and vertical scan modes. Position: Tracks stationary po...
Page 40 - To use the position mode:; Use the Omnipad to choose the location to track.; Target lock indicator
2. HORIZONTAL MODE 2-20 2.12.3 Position mode This mode tracks a stationary position (such as a reef) using position data fed from a navigator. Note 1: If the [TARGET] key is operated when using the horizontal/vertical scan combination mode, the train angle is automatically pointed toward target dire...
Page 41 - Target lock area
2. HORIZONTAL MODE 2-21 2.12.4 Echo mode The echo mode tracks a fish school, either automatically or manually. The default setting is automatic, and you can choose automatic or manual with “LOCK MODE” in the HORZ menu. Automatic echo tracking mode The automatic echo target lock function automaticall...
Page 42 - To use the manual echo tracking mode:; appears momentarily.
2. HORIZONTAL MODE 2-22 When the fish echo is lost the tilt angle is automatically changed as below to continue tracking the echo: Tilt changed to search [(A + 10 ° ) → (A - 10 ° ) → A] Detection area displayed once again and target lock indicator lights. A : Tilt angle at start of target lock 5. To...
Page 43 - Horizontal Menu Overview; Horizontal menu description; suppressing weak echoes such as plankton.
2. HORIZONTAL MODE 2-23 2.13 Horizontal Menu Overview This section presents an overview of the items on the HORZ menu. 1. Press the [MENU] key to open the menu. 2. Press ▲ to choose MENU and then press ◄ or ► to choose the HORZ menu. TVG LEVEL 4.0 TVG DISTANCE 4.0 GAIN ADJUST 0 RES. COLOR LOG CLUTTE...
Page 45 - Interpreting the Horizontal Display; How the horizontal mode picture is painted
2. HORIZONTAL MODE 2-25 2.14 Interpreting the Horizontal Display This section provides information necessary for interpreting the horizontal display. 2.14.1 How the horizontal mode picture is painted As shown below, the search beam is emitted from the soundome at a certain tilt angle. The informatio...
Page 46 - Bottom echoes
2. HORIZONTAL MODE 2-26 2.14.2 Sample echo displays Bottom echoes When the tilt angle is changed, the bottom echo illustrated below will appear on the display. When the tilt is decreased (toward 0 ° ), the bottom trace becomes wider and weaker. By observing the bottom condition on the display, you c...
Page 47 - Fish schools
2. HORIZONTAL MODE 2-27 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. To find distribution and center point of a fish school, try several different tilt angles. (A) Sea surface fish Tilt angle: 0 ° to ...
Page 48 - To reduce sea surface reflections, set the tilt angle to 5; Sea surface reflections; Wake
2. HORIZONTAL MODE 2-28 Sea surface reflections To reduce sea surface reflections, set the tilt angle to 5 ° or lower, so the upper edge of the sonar beam does not hit the sea surface, or adjust TVG. When a decreased tilt angle is used, sea surface reflections cover a large area as illustrated below...
Page 49 - Sidelobe echoes; Noise and interference
2. HORIZONTAL MODE 2-29 Sidelobe echo (false echo) An ultrasonic wave is emitted in the direction set by the [TILT] control (main beam), however there are some emissions outside the main beam. These are called sidelobes. The energy of the sidelobe is fairly weak but when the water is comparatively s...
Page 50 - Horizontal/history display; Press the
2. HORIZONTAL MODE 2-30 2.14.3 Combination display examples Horizontal/history display Press the key to display the horizontal/history display. Cursor Own shipmarker Horizontal Display (main window) History Display (sub window) Bottom echo Fish echo 30 25 R 40 mT 40 ° Range Tilt angle Tilt angle ind...
Page 51 - Horizontal/video plotter display
2. HORIZONTAL MODE 2-31 Horizontal/video plotter display Press the key to display the horizontal/video plotter display. Cursor Own shipmarker Horizontal Display (main window) Video Plotter Display (sub window) 500 Track* → 15 B 195 ° Event marker Event marker data Track* Event marker(Entered fromhor...
Page 52 - Horizontal/strata display; Horizontal/Strata display
2. HORIZONTAL MODE 2-32 Horizontal/strata display Press the key to display the horizontal/strata display. CSE 357 ° SPD 9.9 kt 34 ° 12. 343' N 134 ° 34. 213' W 30 25 R 40 mT 40 ° → 12 ↓ 10 B133 ° + PORT STBD Cursor position data Range Tilt angle Tilt angle indicator Cursor Target lock indicator Inte...
Page 53 - Color bar for the strata display; Flat bottom and strata display
2. HORIZONTAL MODE 2-33 ◆ Color bar for the strata display The depth of the bottom each in all directions is displayed in the sub window, in the colors set by the color bar for the strata display. The color bar for the strata display shows search angle range below 336 degrees. Color bar forstrata d...
Page 54 - Projection in fore direction and strata display
2. HORIZONTAL MODE 2-34 ◆ Projection in fore direction and strata display Color "b" on the color baris displayed here. Color "a" on the color bar Color "b" Color"a" PORT STBD +90˚ -90˚ Projection in fore direction and strata display ◆ Depth gradually becoming shallo...
Page 55 - VERTICAL SCAN MODE
3-1 3. VERTICAL SCAN MODE 3.1 Operational Overview The figure below shows the typical vertical scan mode operating sequence. GAIN SECTOR TRAIN RANGE TILT MAIN SUB FULL HALF FAST SCAN BRILL TARGET MENU R/B EVENT CUSTOM MODE DISPLAY MODE POWER XDR 2. Lower the transducer. 9. Adjust gain. 7(a). Set sca...
Page 56 - Displaying Vertical Scan Mode Display; Typical vertical scan mode display
3. VERTICAL SCAN MODE 3-2 3.2 Displaying Vertical Scan Mode Display 3.2.1 Typical vertical scan mode display Press the key to show the vertical scan mode display. + → 6 ↓ 145 R → 60 m ↓ 100 m 340 ° Cursorpositiondata Horizontal range Vertical range Event marker Interferencerejector ON Heading* 60 60...
Page 57 - How the vertical scan picture is painted; How the vertical scan mode picture is painted
3. VERTICAL SCAN MODE 3-3 3.2.2 How the vertical scan picture is painted The sounding beam is emitted and the information (target echoes) obtained by the reflected echo appears in the corresponding sector as it appears on the horizontal mode. The difference is that the training is performed only in ...
Page 59 - TRAIN control; Sets training center direction.; For vertical scan display:; Sets direction of bearing cursor shown on the horizontal mode; SECTOR control; Only the [SECTOR] control may be operated in this condition.
3. VERTICAL SCAN MODE 3-5 The displays are independent of each other so you can adjust them as desired. Press the [MAIN/SUB] key to choose the window to adjust. Each press of the key momentarily displays MAIN WINDOW CONTROLLABLE or SUB WINDOW CONTROLLABLE at the top of the screen to let you know whi...
Page 60 - Default vertical scan mode range settings; Choosing Train Center; Train indicator and display
3. VERTICAL SCAN MODE 3-6 3.3 Choosing the Range The [RANGE] control chooses the detection (display) range, in 15 settings. Choose the range according to either the fish species being searched or the depth desired. Each time the control is operated the newly chosen range briefly appears in large cha...
Page 61 - Choosing Display Sector; Sector means the width of the transducer training, from 6; Sector; One-touch selection of 180; is presented, and “FULL”
3. VERTICAL SCAN MODE 3-7 3.5 Choosing Display Sector Sector means the width of the transducer training, from 6 ° to 180 °. 24 ° Sector (Shown: 24 ° ) Sector The [SECTOR] control chooses the training area among the sixteen positions shown in the table below. Clockwise rotation of the control increas...
Page 62 - Choosing Sector Center; Sector center; Automatic shifting of own ship position; How automatic shifting works
3. VERTICAL SCAN MODE 3-8 3.6 Choosing Sector Center The center direction of the sounding beam in the vertical direction can be changed with the [TILT] control. The setting range is 0 ° to 180 ° in increments of 6 ° . Choose the setting which places the sector center in the middle of the detection r...
Page 63 - Choosing the Tilt Speed; 0 transmissions to complete a half circle, in increments of 6; Values shown are for reference purposes. Actual values may vary.; Finding Echo Position with the Cursor
3. VERTICAL SCAN MODE 3-9 3.7 Choosing the Tilt Speed The [FAST SCAN] key chooses the tilt speed; that is, the stepping angle at which the transducer scans. Two choices are available, 3 ° (normal speed) and 6 ° (high speed). Each time the key is pressed the display momentarily shows “NORM” (normal s...
Page 64 - How to inscribe and delete the event markers
3. VERTICAL SCAN MODE 3-10 3.9 Event Marker 3.9.1 Entering an event marker The event marker functions to mark important locations on the screen, and five may be inscribed. Each time the [EVENT] key is pressed the “latest event marker” ( ⊕ ) is inscribed at the cursor location and all previously ente...
Page 65 - Depth and Horizontal Range Markers; range and depth appear on the screen.; Depth and horizontal range markers
3. VERTICAL SCAN MODE 3-11 3.9.2 Deleting all event markers All event markers can be erased from the screen as follows: 1. Operate the Omnipad to place the cursor outside the display area. 2. Press the [EVENT] key to show the following dialog box. Do the next step within four seconds; otherwise the ...
Page 66 - Adjusting the Picture; VERT menu
3. VERTICAL SCAN MODE 3-12 3.11 Adjusting the Picture 3.11.1 Displaying weak echoes clearly Echoes from targets (such as the bottom or a fish) return to the transducer in order of the distance to them, and when their intensities are compared at the transducer face, those from nearer targets are gene...
Page 67 - Examples of proper and improper TVG
3. VERTICAL SCAN MODE 3-13 4. Press ◄ or ► to adjust TVG distance, considering sea conditions. The larger the figure the greater the distance at which the TVG works. TVG Distance Setting 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 . . . . 10.0 Meters 3 8 20 40 60 100 130 160 200 250 320 . . . . 1000 F...
Page 68 - Suppressing noise and interference; Appearance of interference
3. VERTICAL SCAN MODE 3-14 3.11.2 Suppressing noise and interference You may encounter occasional or intermittent noise and interference as shown below. This is mostly caused by electrical equipment, engine, propeller noise from own ship, or noise from other sonars being operated nearby. If interfer...
Page 70 - Choosing horizontal range expansion factor
3. VERTICAL SCAN MODE 3-16 3.11.6 Choosing horizontal range expansion factor You may choose the horizontal range expansion factor for the vertical scan picture, from x1 or x2. Note that this feature cannot be adjusted when the vertical search mode, activated by a function key, is turned on. 1. Press...
Page 71 - Interpreting the Vertical Scan Display; Port-starboard picture; When ship passes over fish schools; Picture appearance when passing over fish schools
3. VERTICAL SCAN MODE 3-17 3.12 Interpreting the Vertical Scan Display This section provides information necessary for interpreting the vertical scan display. 3.12.1 Sample echo displays Port-starboard picture You can see fish echoes at the center-right of the screen. The bottom is displayed wider a...
Page 72 - Display of net hauling; Net hauling and sonar picture; False echo; False echoes
3. VERTICAL SCAN MODE 3-18 Display of net hauling This is an example of net hauling display. The location of the net is indicated clearly. FORE AFT Net Net hauling and sonar picture False echo In shallow water (depth less than 100 m) detection, unwanted echoes as shown in the figure below may appear...
Page 73 - ECHO SOUNDER MODE
4-1 4. ECHO SOUNDER MODE 4.1 Operational Overview The figure below shows the typical echo sounder mode operating sequence. GAIN SECTOR TRAIN RANGE TILT MAIN SUB FULL HALF FAST SCAN BRILL TARGET MENU R/B EVENT CUSTOM MODE DISPLAY MODE POWER XDR 2. Lower the transducer. 6. Adjust gain. 5. Set range . ...
Page 74 - Typical Echo Sounder Display
4. ECHO SOUNDER MODE 4-2 4.2 Typical Echo Sounder Display Press the key to display the echo sounder picture. + 4 R 10 mT 60 ° 340 ° DEP TMP 6.5 m 12. 3˚C Cursorposition Range Tilt angle Fish echo Bottom echo Event marker Cursor Interferencerejector ON 10 5 Depth(When the tilt angleis 90 deg., the de...
Page 75 - Range concept
4. ECHO SOUNDER MODE 4-3 4.3 Choosing the Range The [RANGE] control chooses the detection (display) range, in 15 settings. Choose the range according to either the fish species being searched or the depth desired. Each time the control is operated the newly chosen range briefly appears in large char...
Page 77 - Measuring Range by Cursor; How to measure range with the cursor
4. ECHO SOUNDER MODE 4-5 4.7 Measuring Range by Cursor Use the cursor to display the range from own ship to the cursor location. Use the Omnipad to place the cursor where desired. The range to the cursor appears at the upper left-hand corner of the screen. NAV DATA or A-SCOPE DISPLAY Depth, Water Te...
Page 79 - Range marker
4. ECHO SOUNDER MODE 4-7 4.9 Range Marker The range marker functions to measure the range to a target echo (fish school, bottom, etc.) 1. Operate the Omnipad to place the cursor on the location desired. 2. Press the [R/B] key to display the range marker. The range marker appears along with range ind...
Page 80 - Adjusting the Picture; ES menu
4. ECHO SOUNDER MODE 4-8 4.10 Adjusting the Picture 4.10.1 Displaying weak echoes clearly Echoes from targets (such as the bottom or a fish) return to the transducer in order of the distance to them, and when their intensities are compared at the transducer face, those from nearer targets are genera...
Page 85 - OPERATION; Menu; to choose MENU, and then press; menu; Chooses pulselength to short or long. For further details, see
5-1 5. MENU OPERATION 5.1 COM1 Menu 5.1.1 Displaying the COM1 menu 1. Press the [MENU] key to open the menu. 2. Press ▲ to choose MENU, and then press ◄ to choose COM1. TX POWER MAX PULSELENGTH LONG TX RATE 10 INT REJECT OFF AGC OFF : S E L E C T : CHANGE MENU: END MENU COM1 HORZ VERT ES PRESET SYS ...
Page 86 - Choose ON to delete all ship’s track (from horizontal and; BKGD COLOR; : Chooses color of background, text and menu. Three choices are
5. MENU OPERATION 5-2 5.2 COM2 Menu 5.2.1 Displaying the COM2 menu 1. Press the [MENU] key to open the menu. 2. Press ▲ to choose MENU, and then press ◄ or ► to choose COM2. DELETING TRACK NO WHITE MARKER OFF SIG LEVEL OFF COLOR 16 BKGD COLOR 2 : S E L E C T : CHANGE MENU: END MENU COM1 HORZ VERT ES...
Page 87 - Fast; Display for opening system menu
5. MENU OPERATION 5-3 5.3 Short-cut Menu, Preset Menu These menus program the CUSTOM MODE keys [1], [2] and [3]. The menu to use may be chosen with CUSTOM KEY on the SYSTEM SETTING 1 menu. Short-cut key: One-touch activation of the operator-selected dialog box. Preset key: One-touch setup of mode, s...
Page 88 - System menu; System setting 1 menu
5. MENU OPERATION 5-4 RANGE-SONAR MODE RANGE-VERTICAL MODE RANGE-E/S MODE ADJ MOTION SENSOR TX FREQ ADJUST TEST TEST PATTERN DEMO MODE DEFAULT : SELECT : MENU DISPLAY MENU: END SYSTEM SETTING : COLOR PALETTE LANGUAGE SYSTEM BACKUP LOAD BACKUP DATA HEADING OFFSET, DRAFT OFFSET ** SYSTEM MENU ** RANGE...
Page 89 - PRESET menu; Activating a custom mode key; CUSTOM3 appears at the top of the screen depending on key pressed.
5. MENU OPERATION 5-5 5.3.2 Changing setting of preset key 1. Choose PRESET KEY following the procedure in paragraph 5.3.1. 2. Press the [MENU] key to open the menu. 3. Press ▲ to choose MENU, and then press ◄ or ► to choose PRESET. MODE SECTOR TRAIN RANGE TILT SPEED PRESENT CUSTOM 1 CUSTOM2 CUSTOM3...
Page 91 - Activating a short-cut key; VERTICAL SEARCH FUNCTION
5. MENU OPERATION 5-7 Activating a short-cut key 1. Press a CUSTOM MODE key, and the dialog box programmed for the custom key pressed appears. (No dialog box appears for VER. SEARCH.) The dialog box below is for “CLUTTER”. CLUTTER (HORZ): 0 1 2 3 Note: Vertical search can only be activated when the ...
Page 93 - SYSTEM SETTING 1 menu description; Current vector
5. MENU OPERATION 5-9 5.4.2 SYSTEM SETTING 1 menu description 1. Display the SYSTEM menu and then press ▲ or ▼ to choose SYSTEM SETTING. 2. Press ► to open the SYSTEM SETTING menu. 3. Press ▲ to MENU. 4. Press ◄ to choose “1.” OFF 10sec 30sec 1min 3min 6min TARGET L/L : OFF ON CUSTOM KEY : PRESET KE...
Page 94 - ETA marker
5. MENU OPERATION 5-10 HEADING INDICATION: Chooses heading indication format, true (figures) or azimuth (compass points, for example, N, S, etc.), for the echo sounder and vertical scan modes. Requires heading data. NORTH MARK: Turns the north marker on or off. Requires heading data. CSE DATA: Choos...
Page 95 - System setting 2 menu; SYSTEM SETTING 2 menu description; Choose ON to compensate for effects of ship’s pitching and rolling.
5. MENU OPERATION 5-11 5.4.3 SYSTEM SETTING 2 menu description OFF 15 kt 20kt OFF (OFF, 5-15kt) AUTO RETRACTION : SPEED ALARM/MESSAGE : DEFAULT SETTING : NO YES : SELECT : CHANGE MENU: END MENU 1 2 ** SYSTEM SETTING 2 ** MAXIMUM ALLOWABLE SPEED IS 15 KNOTS WHILE SOUNDDOME IS BEINGRETRACTED. IF VESSE...
Page 96 - Choose the speed at which the speed alarm message is; ] pressed to lower transducer; Message 1 Message 2; FACTORY SETTING display
5. MENU OPERATION 5-12 SPEED ALARM MESSAGE: Choose the speed at which the speed alarm message is displayed and the aural alarm released when the speed goes higher than that set here. The audio alarm can be silenced with the [R/B] key. [ ª ] pressed to lower transducer Speed above 15 kts Message 1 ap...
Page 97 - Range-sonar mode menu; To restore default horizontal mode range settings,; choose DEFAULT SETTING, press
5. MENU OPERATION 5-13 5.4.4 Sonar (horizontal) mode range settings The user may preset horizontal mode ranges as desired. 1. Choose RANGE-SONAR MODE at the SYS menu and then press ► . 2 : 20 3 : 40 4 : 60 10 : 250 11 : 300 12 : 400 13 : 500 14 : 600 15 : 800 DEFAULT SETTING : NO YES : SELECT : CHAN...
Page 98 - Vertical scan mode range settings; To restore default vertical scan mode range settings,; choose DEFAULT SETTING,
5. MENU OPERATION 5-14 5.4.5 Vertical scan mode range settings As with the horizontal mode, the user may preset the vertical scan mode’s ranges. 1. Choose RANGE-VER MODE at the SYS menu and then press ► . 2 : 20 3 : 30 4 : 40 10 : 200 11 : 250 12 : 300 13 : 400 14 : 500 15 : 600 : SELECT : CHANGE ME...
Page 99 - To restore default echo sounder mode range settings,
5. MENU OPERATION 5-15 5.4.6 Echo sounder mode range settings As with the horizontal and vertical scan modes, the user may preset the echo sounder mode’s ranges. 1. Choose RANGE-E/S MODE at the SYS menu and then press ► . 2 : 20 3 : 30 4 : 40 10 : 200 11 : 250 12 : 300 13 : 400 14 : 500 15 : 600 : S...
Page 100 - Range-track mode menu; To restore default track range settings,
5. MENU OPERATION 5-16 5.4.7 Track range settings You may choose the video plotter display scale range as follows. 1. Choose RANGE-TRACK at the SYS menu and then press ► . 5 : 8000 2 : 1000 3 : 2000 4 : 4000 : SELECT : CHANGE MENU: END ** RANGE-TRACK MODE ** 1 : 500 (100-10000m) DEFAULT SETTING : NO...
Page 101 - palette; Color palette; To restore default color settings,
5. MENU OPERATION 5-17 5.4.8 Color palette The color palette lets the user change the color of echoes, background, text and menu as desired. R : 0 ** COLOR PALETTE ** TEXT BKGD MENU BKGD3 TEXT BKGD MENU BKGD1 TEXT BKGD MENU DEFAULT SET : NO YES (ECHO & BKGD COLORS WILL BE CHANGED) G : 2 B : 9 EC...
Page 103 - TX frequency adjustment menu; Demo mode menu
5. MENU OPERATION 5-19 5.4.12 Transducer frequency adjustment If the CH-270 is receiving interference from a video sounder or other sonar on board your ship, adjust the frequency of the CH-270’s transducer to reduce the interference. 180.0 kHz (171-189 kHz) FREQ SHIFT : : CHANGE MENU: END ** TX FREQ...
Page 104 - Default menu
5. MENU OPERATION 5-20 5.4.14 Restoring all default settings All default menu settings may be restored. Choose YES and then press the [MENU] key to restore all default settings. Note that the settings stored in SYSTEM BACKUP are not disturbed. NO YES ARE YOU SURE? : : CHANGE MENU: END ** DEFAULT ** ...
Page 105 - TROUBLESHOOTING; Maintenance; Check the following points monthly.; Cleaning the LCD
6-1 6. MAINTENANCE, TROUBLESHOOTING This chapter provides the information necessary for keeping the equipment in good working order. WARNING Do not open the equipment. Hazardous voltage which cancause electrical shock existsinside the equipment. Only qualified personnel should work inside the equipm...
Page 107 - does not rise or lower smoothly, do not use force the shaft may bend.; Replacement
6. MAINTENANCE, TROUBLESHOOTING 6-3 Hull unit CH-184 1. Turn off the breaker switch on the hull unit. 2. Slightly loosen the bolts fastening the shaft retainer. 3. Raise and lower the shaft by hand to confirm that it raises and lowers smoothly. If it does not rise or lower smoothly, do not use force...
Page 108 - Remedy; Cannot turn on the power.
6. MAINTENANCE, TROUBLESHOOTING 6-4 6.6 Troubleshooting The table below provides common symptoms of equipment troubles and the means to rectify them. Symptom Check, Remedy Cannot turn on the power. • Check ship’s mains. • Have a suitably qualified technician check the fuse in the transceiver unit. B...
Page 109 - Messages; Message; CPU cannot recognize tilt position signal.; Excessive Speed
6. MAINTENANCE, TROUBLESHOOTING 6-5 6.7 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. Message Meaning, Remedy Raise/Lower Error RAISE/LOWER FUNCTION HAS NOT BEE...
Page 111 - Interpreting the test results display
6. MAINTENANCE, TROUBLESHOOTING 6-7 Interpreting the test results display MAIN PROGRAM NO., PANEL PROGRAM NO.: The program numbers of the MAIN and PANEL programs appear at the top of the display. ROM, RAM, VRAM, NMEA: Checked for proper operation and the results displayed as OK or NG (No Good). For ...
Page 112 - Pattern; Test pattern
6. MAINTENANCE, TROUBLESHOOTING 6-8 6.9 Test Pattern A test pattern can be displayed to check for proper display of colors. 1. Press the [MENU] key to open the menu. 2. Press ▲ to choose MENU, and then press ► to choose SYS. 3. Press ▼ to choose GO TO SYS MENU. 4. Press ► to choose YES. 5. Choose TE...
Page 113 - MENU TREE
M-1 MENU TREE [MENU] key TX POWER ( MAX , MIN) PULSELENGTH ( LONG , SHORT) TX RATE (EXTERNAL, 1-10; 10 ) INT REJECT ( OFF , ON) AGC ( OFF , ON) AUDIO LEVEL ( 0 -10) COM2 menu TVG LEVEL (0-10, 4.0 ) TVG DISTANCE (0-10, 4.0 ) GAIN ADJUST (-10 - +10, 0 ) RES. COLOR ( LOG , LINEAR, SQUARE, CUBE) CLUTTER...
Page 115 - SPECIFICATIONS; Horizontal Mode
SP-1 SPECIFICATIONS 1. GENERAL 1.1 Display System 10.4-inch color LCD (640 x 480 dots), or locally supplied monitor 1.2 Transmit Frequency 180 kHz 1.3 Output Power 0.8 kW, power reduction available 1.4 Range (factory settings) Range (m) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Horizontal Mode 10 20 40 60...
Page 116 - ENVIRONMENTAL CONDITIONS
SPECIFICATIONS SP-2 3.5 Horizontal Mode Control Scanning Angle: 6 ° to 360 ° , 24 ° step Scanning Center: 6 ° steps, 360 ° setting available Scanning Step Angle: Normal: 6 ° , High speed: 12 ° Elevation Angle: +5 ° to 90 ° , 1 ° step Time to Train Full Circle: Range (m) 10 20 40 60 80 100 120 160 20...
Page 117 - INDEX
IN-1 INDEX A AGC .............................................................5-1 A-scope display .........................................4-10 Auto retraction ........................................... 5-11 Auto tilt.......................................................2-24 B Backup data............
Furuno FAR2XX7
Manual
Furuno FR-7112
Manual
Furuno FM-7000
Manual
Furuno fr8100d
Manual
Furuno DS-60
Manual
Furuno FR-8111
Manual
Furuno 851 MARK-2
Manual
Furuno 1723C
Manual
Furuno WX2-012-551
Manual
Furuno FSV-35
Manual
Furuno 2167DS-BB
Manual
Furuno GP-3100
Manual
Furuno FR-2110
Manual
Furuno FS-1575/2575/5075
Manual
Furuno CH-300
Manual
Furuno VR-3000S
Manual
Furuno 1650WDF
Manual
Furuno GD-1920C-BB
Manual
Furuno GP-1850WDF
Manual