Furuno CH-250 2.14.3 Combination display examples

2-28

2.14.3 Combination display examples

Horizontal/history display

Press the key to display the horizontal/history display.

Cursor

Own ship

marker

Horizontal Display HIstory Display

Bottom echo

Fish echo

R 40 m

T 40˚

Range

Tilt angle

Tilt angle indicator

CSE 357˚ SPD 9.9 kt

34° 12. 343' N

134° 34. 213' W Position in latitude*,

longitude*

Course*, speed*

Target lock indicator

Interference rej. ON

Cursor position

data

→17

↓ 14

B148˚

* Requires appropriate

sensor input.

Transducer status

indicator

Train

position

Figure 2-27 Horizontal/history di splay

The horizontal display appears in the main window; the history display in the sub window. The

length of the picture displayed in the history display is equal to about four full circle pictures.

Thus the history display enables you to observe the history of fish movement and distri b uti o n. It

is also useful for detecting bottom fish , re e fs an d sunken vessels.

The history display cannot be adjusted.

Contents

Main *00080894802**00080894802* *OME13160L00**OME13160L00* i SAFETY INSTRUCTIONS WARNINGWARNING ELECTRICAL SHOCK HAZARD WARNINGWARNING CAUTION TFT LCD CAUTION TABLE OF CONTENTS 2. HORIZONTAL MODE .........................................................................2-1 3. VERTICAL FAN MODE....................................................................... 3-1 iv 4. ECHO SOUNDER MODE ...................................................................4-1 5. MENU OPERATION............................................................................ 5-1 6. MAINTENANCE, TROUBLESHOOTING ...........................................6-1 FOREWORD Features vi Usage Precautions vii SYSTEM CONFIGURATION Page 1-1 1. OPERATIONAL OVERVIEW 1.1 Control Description Figure 1-1 Control unit 1-2 1.2 Remote Controller 1-3 1.3 Turning the Power On/Off 1.3.1 Power on 1.3.2 Power off 1-4 1.4 Raising, Lowering the Transducer CAUTION 1.4.2 Raising the tr ansducer 1.5 Adjusting Screen Brilliance, Panel Dimmer 1-6 1.6 Selecting a Display NAV DATA Key Key VERTICAL FAN ECHO SOUNDER 1.7 Adjusting the Gain 1.8 Basic Menu Operation 1-8 2-1 2. HORIZONTAL MODE 2.1 Operational Overview The figure below shows the typical horizontal mode operating sequence. Figure 2-1 Control panel 2.2 Typical Horizontal Mode Display Sweep indicator (Shows train position in horizontal mode.) 2.3 Selecting the Range 2-4 2.4 Selecting Sector Width One-touch selection of 360 sector 2.5 Selecting Train Center 2.6 Selecting the Tilt Angle 2-6 2.6.1 Bottom echo and tilt angle 2.6.2 How to discriminate fish echoes from the bottom Points to consider 2.6.3 Tilt angle for surface fish 2-8 2.6.4 Suitable tilt angle Vertical width of sonar beam Depth (m) Tilt angle and beam coverage (frequency 60 kHz, vertical beamwidth 12 at -3 dB) Figure 2-9 Tilt angle and beam cov er ag e 2.7 Selecting the Training Speed 2.8 Finding Echo Position with the Cursor 2-10 2.9 Event Marker 2.9.1 Inscribing the event marker 2.9.2 Deleting all event markers 2.10 Depth and Horizontal Range Markers 2-12 2.11 Adjusting the Picture 2.11.1 Suppressing bottom and surface reflections 2-13 2.11.2 Suppressing bottom tail 2.11.3 Displaying weak echoes clearly 2-14 2.11.4 Erasing weak echoes 2-16 2.11.5 Enlarging fish echoes (expand horizontal display) 2.12 Target Lock 2.12.1 Setting target lock mode 2.12.2 Manual reserve mode 2-18 2.12.3 Position mode Target lock indicator Target lock marker 2.12.4 Echo mode Automatic echo tracking mode 2-20 Manual echo tracking mode 2.13 Horizontal Menu Overview 2.13.1 Horizontal menu description 2-22 2.14 Interpreting the Horizontal Display 2.14.1 How the horizontal mode picture is painted 2-24 2.14.2 Sample echo displays Bottom echoes Figure 2-21 Bottom echoes 2-25 Fish schools Figure 2-22 Fish schools 2-26 Sea surface reflections Wake Sidelobe echo (false echo) Noise and interference 2-28 2.14.3 Combination display examples Horizontal/history display 2-29 Horizontal/video plotter display k e y to display the horizontal/video plotter display. 2-30 Horizontal/strata display 2-31 Color bar for the strata dis play Flat bottom and strata display 2-32 Projection in fore direction and strata display Depth becoming shallower gradually in fore direction and strata display Depth becoming deeper gradually in fore direction and strata display 3. VERTICAL FAN MODE 3.1 Operational Overview The figure below shows the typical vertical fan mode operating sequence. Figure 3-1 Control panel 3.2 Typical Vertical Fan Mode Display Figure 3-2 Typical vertical fan mode display 3.3 Selecting the Range 3-4 3.4 Selecting Train Center 3.5 Selecting Display Sector One-touch selection of 180 3-6 3.6 Selecting Sector Center Automatic shifting of own ship position 3.7 Selecting the Training Speed 3.8 Finding Echo Position with the Cursor 3-8 3.9 Event Marker 3.9.1 Deleting all event markers 3.10 Depth and Horizontal Range Markers 3-10 3.11 Adjusting the Picture 3.11.1 Displaying weak echoes clearly 3.11.2 Suppressing noise and interference 3-12 3.12 Vertical Menu Overview 3.12.1 Vertical menu description 3.13 Interpreting the Vertical Fan Display 3.13.1 How the vertical fan mode picture is painted 3-14 3.13.2 Sample echo displays Port-starboard picture (bottom ) When ship passes over fish schools Display of net hauling False echo 3-16 3.13.3 Horizontal/vertical fan display TRAIN control 3-17 SECTOR control Page 4-1 4. ECHO SOUNDER MODE 4.1 Operational Overview The figure below shows the typical echo sounder mode operating sequence. Figure 4-1 Control panel 4.2 Typical Echo Sounder Display Press the key to display the echo sounder picture. 6.5 m 12. 3C Figure 4-2 Typical echo sounder di spl a y 4.3 Selecting the Range 4-4 4.4 Train Direction 4.5 Selecting Tilt Angle 4.6 Selecting Picture Advance Speed 4.7 Measuring Range by Cursor 4.8 Event Marker 4-6 4.8.1 Inscribing the event marker 4.8.2 Deleting all event markers 4.9 Range Marker 4.10 Adjusting the Picture 4.10.1 Displaying weak echoes clearly 4-8 4.10.2 Finding echo strength (A-scope display) 4-10 4.11 Echo Sounder Menu Overview 4.11.1 Echo sounder menu descri pt i on Page Page 5-1 5. MENU OPERATION 5.1 COM1 Menu 5-2 5.1.1 COM1 menu description 5.2 COM2 Menu 5.2.1 Displaying the COM 2 menu COM2 menu 5.2.2 COM2 menu description 5.3 Short-cut Menu, Preset Menu 5.3.1 Selecting short-cut or preset 5-5 Figure 5-3 System menu 5. Press to open the SYSTEM SETTING menu. Figure 5-4 System setting 1 menu 6. Press or to select CUSTOM KEY. 5-6 5.3.2 Preset key Activating custom mode 5.3.3 Short-cut key Activating a short-cut key 5-8 VERTICAL SEARCH FUNCTION 5.4 SYS Menu 5-10 SYSTEM SETTING 1 menu SYSTEM SETTING 1 menu description Page 5-12 SYSTEM SETTING 2 menu description Page 5-14 5.4.2 Sonar (horizontal) mode range settings 5-16 5.4.3 Vertical fan mode range settings 5.4.4 Echo sounder mode range settings 5-18 5.4.5 Track range settings Figure 5-16 Range-track mode menu 5.4.6 Color palette 5-20 5.4.7 Language 5.4.8 System backup 5.4.9 Loading backup data 5.4.10 Transducer frequency adjustment 5.4.11 Demonstration mode 5-22 5.4.12 Restoring all default settings CAUTION 6. MAINTENANCE, TROUBLESHOOTING WARNING 6.1 Preventive Maintenance 6.2 Cleaning the Equipment 6-2 6.3 Hull Unit Maintenance 6.3.1 Lubrication 6.3.2 Manually raising, lowering transducer WARNING 6.4 Transducer Maintenance CAUTION 6.5 Fuse Replacement CAUTION 6-4 6.6 Troubleshooting 6-5 6.7 Error Messages 6-6 6.8 Diagnostics Page 6-8 6.9 Test Pattern M-1 MENU TREE M-2 SPECIFICATIONS OF 10.4 INCH COLOR LCD SEARCHLIGHT SONAR CH-250 1 GENERAL 2 DISPLAY/ CONTROL UNIT 3 TRANSCEIVER UNIT 4 HULL UNI T 5 I/O INTERFACE 6 POWER SUPPLY 7 ENVIRONMENTAL CONDITION 8 COATING COLOR Page INDEX IN-2