JRC JFV-700HP Instruction Manual
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JRC JFV-700HP Instruction Manual

JRC JFV-700HP Instruction Manual

Color fishfinder
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  • Page 2 Keep this manual carefully in a readily accessible place for future reference. If you encounter operating problems or the malfunction of the JFV-700HP, consult this manual. It will provide useful instructions on troubleshooting.

  • Page 3: Before You Operate This Product

    BEFORE YOU OPERATE THIS PRODUCT Symbols Used in This Manual Alert symbol marks In this instruction manual and on the product, alert symbol marks are provided to call your attention to important items that, if not handled correctly, could danger yourself, other people, and property.

  • Page 4: Safety Precautions

    SAFETY PRECAUTIONS WARNING Do not remove the cover of this unit. Failure to observe this precaution will result in electrical shock if any internal high-voltage sections are inadvertently touched. Do not disassemble or modify this unit. Failure to observe this precaution results in fire, electrical shock, and/or unit trouble.
  • Page 5 J R C s a l e s o r s e r v i c e representative in your area. Continued use of abnormal JFV-700HP causes fire and/or electrical shock.
  • Page 6 CAUTION Consign any electrical work on this unit to your JRC product dealer, the JRC sales or service representative in your area, or the Sales Department of JRC. Electrical work by persons other than qualified service engineers is dangerous and may cause malfunction. Do not install this unit in places where its screen is exposed to direct sunlight for a long time or where the ambient temperature...
  • Page 7 CAUTION Do not power on this unit when the vessel is landed. Failure to observe this precaution may damage components such as the transducer. Do not expose this unit to magnetism. Failure to observe this precaution may disturb the screen display colors of water depths or of alarms, thus causing accidents.

  • Page 8: Operating Precautions On This Fishfinder

    OPERATING PRECAUTIONS ON THIS FISHFINDER Strictly observe the following precautions on the operations of this unit: The life of the fishfinder is determined by the hours of its operation. When not using this unit even for only a brief time, turn off the power switch to let the unit rest. The use of the fishfinder at a high output level means that yourself also suffers noise interference correspondingly.
  • Page 9 UNIT EXTERNAL VIEW JFV-700HP External View vii UNIT EXTERNAL VIEW...

  • Page 10: Table Of Contents

    CONTENTS PREFACE BEFORE YOU OPERATE THIS PRODUCT ................SAFETY PRECAUTIONS ......................OPERATING PRECAUTIONS ON THIS FISHFINDER .............. UNIT EXTERNAL VIEW ......................vii CONTENTS ..........................viii GLOSSARY OF MAJOR TERMS ....................xii 1. UNIT OVERVIEW ...................... 1.1 Functions ........................1.2 Features ........................1.3 Configuration ........................
  • Page 11 3.2 Main Menu ........................20 Changing the preset range value ....................Changing the standard display range at shorter intervals (STEP method) ........Changing the step range value ....................Selecting a standard range select mode (PRESEET/STEP) ............Changing the partial expand range (ZOOM RANGE) ..............Changing the bottom expand range (BOTTOM RANGE) ............
  • Page 12 Clearing artifacts from video of the bottom (TX CYCLE ADJ.) ............ Changing the STC operating range (STC MODE) ............... Enhancing small echo (SIGNAL PROCESS) ................3.5 INITIAL SETTING Menu ....................49 Changing the water depth unit (DEPTH UNIT) ................Setting a special water depth unit (SPECIAL UNIT) ..............Changing the water temperature unit (TEMP.
  • Page 13 8. DISPOSAL ......................... 70 9. INDEX ........................71 10. SPECIFICATIONS ....................73 G BUSINESS SITE LIST xi CONTENTS...
  • Page 14 GLOSSARY OF MAJOR TERMS NMEA0183 : This term stands for National Marine Electrical Association Standard 0183. Refers to the standard established by the National Marine Electrical Association (NMEA), an institution for providing international standards relating to communications between navigation pieces of equipment. Expansion/zoom : Means enlarging the display size to provide further detailed information on targets and structure.

  • Page 15: Unit Overview

    An A-scope split display function is also available that identifies the fish detection l evel by a color tone and a width. Furthermore, the JFV-700HP provides a water temperature*1/water depth graph display function that displays a graph of changes in water temperature*1/water depth, in overlapped form on the fish detection video.

  • Page 16: Features

    1.2 Features This unit has the following features High Brightness and High Resolution • The 10-inch high-brightness color CRT monitor displays exquisite and clear video. • Any color tone can be selected from four types each consisting of a 16-gradation-level signal color pattern and a background color.

  • Page 17: Configuration

    1.3 Configuration Standard components Description Model number/Others Qty. Remarks Fishfinder JFV-700HP (3-kW type) Specifications depend on frequency Transducer and installation method. Spares 7ZXBS0004 Fuse: 2 pcs. Power cable 7ZCNA0827A (CFQ-8827) With 4-pin connector, 3 m long Instruction 7ZPBS2505 English-language edition...

  • Page 18: Structure

    1.4 Structure Dimensional outline views of the unit Dimensional outline views of the unit are shown below. Unit : mm Mass : Approx. 16 JFV-700HP dimensional outline views 4 1.UNIT OVERVIEW...

  • Page 19: Names And Functions Of Components

    2. NAMES AND FUNCTIONS OF COMPONENTS The names and functions of the unit components are as follows: (Front) Operations panel See the next two pages for the names and functions of keys and controls. [Power switch/brightness] control (Rear) See Section 4.3 for rear panel connector Remote controller connection.

  • Page 20: Operations Panel

    Operations panel MARK SHIFT RANGE SHIFT RANGE MODE ZOOM LO HI DUAL DUAL DUAL GRAPH GAIN CLUTTER HIGH FREQ LOW FREQ PWR/BRT DAY/ NIGHT MENU CUSTOM F/F MENU 6 2.NAMES AND FUNCTIONS OF COMPONENTS...

  • Page 21: Names And Functions Of The Operations Panel Keys And Controls

    Names and functions of the operations panel keys and controls Name Function Name Function RANGE Changes the display range in steps GAIN GAIN adjusts the gain level. Two GAIN CLUTTER of one level. [GAIN] controls are provided: for RANGE LOW FREQ HIGH FREQ high-frequency use and for low- frequency use.

  • Page 22: Operations

    3. OPERATIONS 3.1 Basic Operations Turning power on/off ([PWR/BRT] control) ATTENTION PWR/BRT To turn power on, rotate the [PWR/BRT] (power/brightness) control clockwise. To turn power off, return the [PWR/BRT] control to the OFF position. Adjusting brightness ([PWR/BRT] control) Use the [PWR/BRT] control to adjust brightness. Brightness can be adjusted to any level between "0"...

  • Page 23: Selecting A Display Mode ([Mode] Switch)

    Selecting a display mode ([MODE] switch) To select a display mode, set the [MODE] switch to the desired mode. MODE ZOOM DUAL DUAL DUAL STD. mode (see operations panel control 8 on page 6) Low-frequency/high- E i t h e r l o w - f r e q u e n c y d i s p l a y , h i g h - frequency dual display Low-frequency display High-frequency display...
  • Page 24 Bottom discrimination display mode (see Dual display in the bottom operations panel control 8 on page 6, and bottom discrimination discrimination mode expansion on page 32) In general, the tail width of the bottom echo changes as follows according to the hardness of the bottom (BH is a bottom hardness level changing according to the type of bottom material): Type of bottom material...

  • Page 25: Changing The Display Range

    Changing the display range Example: If values of 10, 20, 40, 80, Standard display range 120, 180, 240, 320, 450, Range operations determine to what depth below the sea level is to be 600, and 800 are assigned displayed on the monitor. During standard display, the display range as the presettings of the can be changed according to the preset range level.

  • Page 26: Shifting The Display

    Shifting the display Standard display shift Example: If a value of 5 m is assigned as the step-by-step shift Shift operations refer to moving the display range in a vertical direction value (water depth direction). The display range can be shifted through the preset shift stroke. Shift stroke Main menu STD.

  • Page 27: Adjusting Gain ([Gain] Controls)

    Adjusting gain ([GAIN] controls) Adjusting gain with the [GAIN] controls GAIN CLUTTER HIGH FREQ The gain level of the receiver can be adjusted by rotating the [GAIN] controls. Two [GAIN] controls are provided: for high-frequency use and for low- frequency use. LOW FEQ Depending on the desired frequency display mode, adjust your receiver gain using the appropriate [GAIN] control.

  • Page 28: Adjusting The Stc Level ([Stc] Controls)

    Adjusting the STC level ([STC] controls) Adjusting surface or bottom STC level with GAIN CLUTTER HIGH FREQ the [STC] controls Rotation of the [STC] controls adjusts the STC level, thus suppressing noise due to the presence of dirt, air bubbles, and other foreign substances near the sea level.

  • Page 29: Suppressing Noise ([Clutter] Controls)

    Suppressing noise ([CLUTTER] controls) GAIN CLUTTER HIGH FREQ Use the [CLUTTER] controls to suppress the screen noise that cannot be reduced with the [STC] controls. Two [CLUTTER] controls are provided: one for high-frequency use, and one for low-frequency use. Perform adjustments by rotating the control corresponding to the LOW FEQ frequency to be selected.
  • Page 30 Writing a mark ( key) MARK Press the key to write a vertical line mark on the screen. This mark MARK will be useful when recorded together with the position of the fishing ground or fish school. Displaying/hiding the A-scope ( key) The A-scope for representing the reflection level of the ultrasonic waves from schools of fish by a color tone and width can be displayed at the...
  • Page 31 Displaying the main menu ( + keys) Press the keys together to display the main menu. In the main menu, data can be assigned to 10 items. Press the key to move between items. key: Moves control to the previous item. key: Moves control to the next item.

  • Page 32: Displaying The Fishfinding Menu

    Displaying the fishfinding menu ( + keys) Press the keys together to display the fishfinding menu. The fishfinding menu will be displayed on the screen. In the fishfinding menu, data can be assigned to 12 items. Press the key to move between items. key: Moves control to the previous item.
  • Page 33 Returning to recorded settings ( key) CUSTOM Mistakes in selecting functions or in entering data can be easily revoked to return to the original status (pre-recorded settings). Use the following procedure to return to recorded settings: Display the CUSTOM menu by pressing the key.

  • Page 34: Main Menu

    3.2 Main Menu Changing the preset range value PRESET range data The PRESET range data can be changed at the intervals that you recorded. To change the PRESET range data, you must first select the STD. RANGE submenu and then change "RANGE MODE" to "PRESET". See page 22 for the range mode selection procedure.

  • Page 35: Changing The Standard Display Range At Shorter Intervals (Step Method)

    Changing the standard display range at shorter intervals (STEP method) RANGE Each time the keys are pressed, the range will change by the RANGE specified step value. To use the STEP method of changing the range, you must first select the STD.

  • Page 36: Selecting A Standard Range Select Mode (Preseet/Step)

    Selecting a standard range select mode (PRESEET/STEP) Select either the PRESET range mode or the STEP range mode. To use AUTO RANGE mode, see the description of main menu item "AUTO MODE" and "AUTO RANGE" selection on page 24. In AUTO RANGE mode, the standard display range can be changed automatically. PRESET range mode Range select operations refer to specifying to what depth below the sea level is to be displayed on the screen.

  • Page 37: Changing The Partial Expand Range (Zoom Range)

    Changing the partial expand range (ZOOM RANGE) The partial expand range uses the preset ZOOM RANGE value. This preset value can be freely updated. Updating the preset ZOOM RANGE value (Setting range: 1 to 100m) Display the main menu by pressing the keys together.

  • Page 38: Using The Auto Mode Functions (Auto Range/Auto Shift)

    Using the AUTO MODE functions (AUTO RANGE/AUTO SHIFT) Using the AUTO MODE functions AUTO RANGE changes the standard display range automatically. This function automatically changes the range so that the bottom is always displayed. Therefore, video of the bottom does not need to be RANGE manually displayed by pressing the keys.

  • Page 39: Selecting Fishfinding Video Colors (Color Mode)

    Selecting fishfinding video colors (COLOR MODE) The colors of the signal levels on the fishfinding video display can be selected from four types of color patterns. Select signal level colors as follows: Display the main menu by pressing the keys together. Move control to "COLOR MODE"...

  • Page 40: Customizing Video Colors (User Color)

    Customizing video colors (USER COLOR) USER COLOR SETTING Although the colors of the fishfinding video signal levels and the background color can be selected from four types, this combination of colors can be customized according to your needs. Colors consist of a combination based on RGB (red, green, and blue).

  • Page 41: Changing The Depth Scale Display Position/Hiding The Display

    Changing the depth scale display position/Hiding the display SCALE POSITION setting The monitor displays a depth scale. If the display of this scale obstructs the video, the entire video can be viewed by changing the display position of the scale or hiding the display itself. Perform the following operations to change the display position of the scale or hide the display: Display the main menu by pressing the...

  • Page 42: Displaying/Hiding The Cursor (Vrm)

    Displaying/hiding the cursor (VRM) The monitor displays a cursor (VRM: variable range marker). This marker can be hidden when unnecessary. VRM : The cursor (VRM) is a depth marker across the screen. The water depth where schools of fish are present can be detected by moving VRM in a vertical direction using the key.

  • Page 43: Selecting A Display-Splitting Format (Split Display)

    Selecting a display-splitting format (SPLIT DISPLAY) Selecting a display-splitting format It is possible to select whether the dual-frequency standard display (2- FREQ. STD.), the single-frequency zoom display (1-FREQ. ZOOM) and bottom expand display (1-FREQ. BTM. EXP.) are to be split in a vertical dual-display format or a horizontal dual-display format.

  • Page 44: Changing The Zoom Display Area (Zoom Area)

    Changing the zoom display area (ZOOM AREA) The zoom display area in partial expand mode (ZOOM) or bottom expand mode (BTM. EXP.) can be changed. Change the zoom display area as follows: Display the main menu by pressing the keys together. Move control to "DISPLAY"...

  • Page 45: Changing The Zoom Mode (Vrm/Btm Track)

    Changing the zoom mode (VRM/BTM TRACK) Display the main menu by pressing the keys together. Move control to "DISPLAY" by pressing the key, and then move control to the DISPLAY SETTING submenu by pressing the key. Move control to "ZOOM MODE" by pressing the key.

  • Page 46: Changing The Bottom Expand Mode (Lock/Disc.)

    Changing the bottom expand mode (LOCK/DISC.) Display the main menu by pressing the keys together. Move control to "DISPLAY" by pressing the key, and then move control to the DISPLAY SETTING submenu by pressing the key. Move control to "BTM. EXP. MODE" by pressing the key.

  • Page 47: Changing The A-Scope Display Format (A-Scope Mode Log/Linear)

    Changing the A-scope display format (A-SCOPE mode LOG/LINEAR) Display the main menu by pressing the keys together. Move control to "DISPLAY" by pressing the key, and then move control to the DISPLAY SETTING submenu by pressing the key. Move control to "A-SCOPE MODE" by pressing the key.

  • Page 48: Specifying The Graph Display Format (Graph)

    Specifying the graph display format (GRAPH) A press of the key displays a graph. Another press clears the graph GRAPH temporarily. Selecting the type of graph Two types of graphs can be displayed: one type represents the relationship between water depth and bottom hardness, and one type represents the relationship between water depth and water temperature.
  • Page 49 Specifying the vertical range (axis) for the water temperature graph The procedure for specifying the median value and the width value for the graph is as follows: Display the main menu by pressing the keys together. Move control to "GRAPH" by pressing the key, and then move control to the GRAPH SETTING submenu by pressing GRAPH...

  • Page 50: Displaying The Bottom Hardness (Bh Value) On A Graph (Depth & Bh)

    Displaying the bottom hardness (BH value) on a graph (DEPTH & BH) Dual display in bottom The relationship between water depth and the hardness of the bottom discrimination mode can be displayed on a graph. This graph can be displayed using the following procedure: Display the main menu by pressing the keys together.

  • Page 51: Alarm Functions

    3.3 Alarm Functions The use of the alarm functions activates a fish alarm to indicate that a fish detection signal level within the specified range has been received, Fish, depth or water temperature alarm and a water temperature alarm to indicate that the detected water temperature has reached the specified maximum or minimum allowable value.

  • Page 52: Setting The Fish Alarm

    Setting the fish alarm The fish alarm can be activated when a fish detection signal exceeding Fish alarm center depth the specified signal level appears in the specified alarm range. Use the Alarm fish alarm menu to specify the fish alarm range and the signal level. range The alarm setting range is within 2,000 m of the zero line.

  • Page 53: Setting The Deep Alarm

    Setting the SHALLOW alarm The SHALLOW alarm can be activated w h e n t h e d e t e c t e d w a t e r d e p t h Alarm decreases below the specified value. Shallow alarm depth Use the SHALLOW alarm menu to specify the water depth.

  • Page 54: Setting The Temp Upper Alarm

    Setting the TEMP UPPER alarm The TEMP UPPER alarm can be activated when water temperature Alarm increases above the specified value. Use the TEMP UPPER alarm menu to Water temp. upper limit value specify the temperature upper limit. The change in water temperature Changes in water temperature that can be specifed range from...
  • Page 55 Setting the TEMP RATE alarm The TEMP RATE alarm will be activated when the actual rate of change of water temperature during one minute significantly changes from the specified rate. Use the TEMP RATE alarm menu to specify the rate of change of water temperature.

  • Page 56: Fish Finder Setting Menu

    3.4 FISH FINDER SETTING Menu Suppressing interference (INTERFERENCE) On-screen interference from external fishfinders or other electronic equipment can be minimized using the INTERFERENCE function (interference suppression) displayed on the FISH FINDER SETTING menu. Four interference suppression levels are provided: "OFF", "IR1", "IR2", and "AUTO".

  • Page 57: Rejecting Specific Colors (Color Rej.)

    Rejecting specific colors (COLOR REJ.) Only specific colors can be reject from video, irrespective of whether noise suppression and STC are valid. Using this function allows the user to suppress screen noise and clear unnecessary schools of fish from the screen, by rejecting the specified colors in order of the signal level.

  • Page 58: Discriminating Between The Sea Bottom And Fish Schools (White Line)

    Descriminating between the Sea Bottom and Fish Schools (WHITE LINE) You can reject signals (colors) in the order of descending signal intensity to discriminate between the sea bottom and fish schools or determine the volume of a fish school. To monitor fish groups on and around the sea bottom, set the white line to erase the strongest signal that represents the sea bottom (reddish brown).

  • Page 59: Reducing Transmitter Output (Pdc)

    Reducing transmitter output (PDC) If the gain level cannot be sufficiently reduced using the gain control or the STC control, change the setting of PDC (transmitter output) to adjust the gain. Four settings are provided for PDC: "A", "B", "C", and "D"; "A" being the minimum output and "D"...

  • Page 60: Changing The Density Of The Entire Video Color (Adc Mode)

    Changing the density of the entire video color (ADC MODE) The density of the entire fishfinding video color can be changed by varying the setting of the ADC mode. Select "7" as the density level for normal operating conditions. A higher density level creates more bluish video, and a lower level creates more reddish video.

  • Page 61: Minimizing Video Interruptions Due To Bubbling (Tx Cycle Mode)

    Minimizing video interruptions due to bubbling (TX CYCLE MODE) The transmission cycle and the timing of chart speed are usually synchronized. Revoking this state minimizes video interruptions due to bubbling. In shallow seas, however, care must be taken since the fishfinder is prone to pick multiplex echoes.

  • Page 62: Changing The Stc Operating Range (Stc Mode)

    Changing the STC operating range (STC MODE) Gain can be adjusted by changing the STC operating range. Either 50 m, 100 m, 150 m, or 200 m is available as the operating range. Usually, select 50 m. Selection of 200 m enhances the identifiability of the fish in deep layers.

  • Page 63: Initial Setting Menu

    3.5 INITIAL SETTING Menu Changing the water depth unit (DEPTH UNIT) Either "m" (meters), "FT" (feet), "FM" (fathoms), or "SP" (special) is available as the water depth unit. The "SP" unit is the user-specified unit. The water depth unit can be changed using the following procedure: Display the FISH FINDER SETTING menu by pressing the keys together.

  • Page 64: Changing The Water Temperature Unit (Temp. Unit)

    Changing the water temperature unit (TEMP. UNIT) Either " º C" (Degree Centigrade) or " º F" (Degree Fahrenheit) is available as the water temperature unit. The water temperature unit can be changed using the following procedure: Display the FISH FINDER SETTING menu by pressing the keys together.

  • Page 65: Specifying The Draft (Draft)

    Specifying the draft (DRAFT) Specify the draft when you wish to display the water depth below the sea level, not the surface of the transducer. The draft can be set in the range from 0.0 to 20.0 m or 20.0 unit. Sea level Draft Surface of the transducer...

  • Page 66: Displaying The Water Depth Below The Keel (Below Keel)

    Displaying the water depth below the keel (BELOW KEEL) The distance from the keel of your vessel to the bottom can be displayed as the water depth value by specifying the height below the keel of your vessel as the BELOW KEEL value. Height below the keel Keel Transducer...

  • Page 67: Adjusting The Displayed Water Temperature Value (Water Temp)

    Adjusting the displayed water temperature value (WATER TEMP) The display of the water temperature value that has been received from an external sensor can be adjusted if a predetermined tolerance is overstepped. Adjust the displayed water temperature value using the following procedure: Display the FISH FINDER SETTING menu by pressing the keys together.

  • Page 68: Correcting A Water Depth Display Error (Sound Speed)

    Correcting a water depth display error (SOUND SPEED) Depending on underwater conditions, the sound velocity displayed may slightly deviate from its actual value. If this is the case, the displayed water depth value will differ from an actual value. Such an error can be corrected by assigning a sound velocity correction value.

  • Page 69: Adjusting The Sensitivity Obtained Near The Water Level (Short Stc)

    Adjusting the sensitivity obtained near the water level (SHORT STC) The video obtained immediately after signal transmission has been started will have a red tail, because the surface-layer water usually is very dirty. To improve such video quality, the sensitivity obtained near the water level (about one meter in water depth) must be adjusted properly using the "SHORT STC"...

  • Page 70: Adjusting The Bottom Identification Level (Bottom Decision Level)

    Adjusting the bottom identification level (BOTTOM DECISION LEVEL) The fishfinder picks the identification signals for identifying the bottom and displaying "DEPTH", "BOTTOM LOCK mode", and "BOTTOM DISCRIMINATION mode" data. The bottom is identified automatically. However, if the bottom is heavily laden with mud, sludge, and/or underwater plankton, the resulting noise may cause a flickering display of the "DEPTH"...

  • Page 71: Modifying The Characteristics Of The Gain Control (Vr Curve)

    Modifying the characteristics of the GAIN control (VR CURVE) The characteristics of the GAIN control can be modified. The "LINEAR" characteristic changes so that the gain level uniformly increases for GAIN control settings from "0" to "10". A gain level from "4"...

  • Page 72: Including External Fishfinding Video In The Dual-Display (Ext. Sig. In)

    Including external fishfinding video in the dual-display (EXT. SIG. IN) Connection of an external input signal line requires separate modification of the rear panel. Such modification is optional (extra charges required). If you desire this modification, please contact your JRC dealer. Set "EXT.

  • Page 73: Receiving External Water Temperature Data (Temp. Input)

    Receiving external water temperature data (TEMP. INPUT) Select "SENSOR" to connect an external water temperature sensor directly to your fishfinder, or "EXT." to receive external water temperature data using the NMEA-0183. The types of water temperature sensors which can be connected are listed below.

  • Page 74: Sending Your Vessel Speed Data To External Equipment (Ext. Output)

    Sending your vessel speed data to external equipment (EXT. OUTPUT) If your fishfinder is receiving location information using a GPS receiver, the corresponding navigation data can be sent to external equipment. Select an output format from the following three types: q "AUTO"...

  • Page 75: Preventing Erroneous Menu Display Operations (Key Lock Function)

    Preventing erroneous menu display operations (Key lock function) Menu display key entry can be made unacceptable. This function is called the key lock function. The key lock function can be set/reset using this procedure: DAY/ Press the key and the key together.

  • Page 76: Installation

    4. INSTALLATION CAUTION When installing this unit, connect the grounding wire to the grounding terminal properly. If unit trouble or current leakage occurs, electrical shock may result. Do not install this unit in places where its screen is exposed to direct sunlight for a long time or where the ambient temperature oversteps the range from -10 to +55 degrees C.

  • Page 77: Installation Procedure

    4.1 Display Installation Installation procedure Use the following procedure to install the display: (1) Loosen the two unit-lock bolts at the front bottom of the unit and remove the mounting plate. (2) Provide four 6mm-diameter tapping screw holes in the installation location for the unit. (3) Set up the mounting plate securely on a desk or table using the supplied tapping screws.
  • Page 79 4.3 Power and Transducer Connection Refer to the installation manual for details on connection of optional components such as a water temperature sensor and external data input/output connectors. Connector A/B or A Connector A/B or A Connector B Single-frequency transducer Dual-frequency/low-frequency transducer Dual-frequency/high-frequency transducer Dual-frequency integrated transducer...

  • Page 81: Maintenance And Check

    5. MAINTENANCE AND CHECK WARNING The user must not check or repair the interior of this unit in any cases. Servicing by persons other than qualified service engineers causes fire and/or electrical shock. Consign internal servicing to your JRC product dealer or the JRC sales or service representative in your area.

  • Page 82: Operating Environmental Measures

    6. OPERATING ENVIRONMENTAL MEASURES Avoid installing this unit in the following places (installation in these places causes trouble and/or reduces unit life): Place exposed to direct sunlight Exposure to direct sunlight accelerates the deterioration of the CRT screen. Installation in a place free from direct sunlight is recommended.

  • Page 83: After-Sale Services

    7. AFTER-SALE SERVICES When Asking for Repair If any trouble is suspected, immediately discontinue use and contact your JRC product dealer or the JRC sales or service representative in your area. Repair within the warranty period Free-of-charge repairs will be performed for any trouble occurring under normal operating conditions based on the description and instructions of this manual.
  • Page 84 8. DISPOSAL If this unit is to be disposed of, follow the legal regulations of the relevant local authorities. For details, please contact your JRC product dealer, the JRC sales or service representative in your area, or the relevant local authorities.

  • Page 85: Color Settings

    9. INDEX This page provides quick reference index information for the user to read what section of this manual to know about the operations of your fishfinder. RANGES Change the display range ....11 Modify the presettings of a range .
  • Page 86 FISHFINDING VIDEO Change the chart feed rate ....15 Suppress the entire video noise ... . . 15 Suppress the surface-layer video noise .

  • Page 87: Specifications

    10. SPECIFICATIONS Color sample Displayed at the left end of the screen (ON/OFF). Display feature 10-inch color CRT screen (vertical setup type) Time mark 30-sec (On for 15 sec, Off for 15 sec) Color gradation 16 levels (Display color: 4 types, Background color: 4 types) Interference suppression Manual/Auto All colors are user-selectable.
  • Page 88 U.S.A..U.S.A U.S.A Overseas Branch Offices Overseas Branch Offices Overseas Branch Offices Overseas Branch Offices Japan Radio Co.,Ltd./Seattle Branch 1011 SW Klickitat Way Bldg.B, Suite 100 Seattle, WA 98134 U. S. A. Phone:＋1-206-654-5644 Fax 　:＋1-206-654-7030 ● U.S.A U.S.A...

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