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Onwa KR-12X8 Operator's Manual

Onwa tft lcd color marine radar
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KR-1238/1268
KR-1538/1568
KR-12X8/15X8
OPERATOR'S MANUAL
TFT LCD COLOR MARINE RADAR

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  • Page 1 KR-1238/1268 KR-1538/1568 KR-12X8/15X8 OPERATOR'S MANUAL TFT LCD COLOR MARINE RADAR...
  • Page 3 If you have any questions regarding these safety instructions, please contact a ONWA agent or dealer. WARNING Do not open the equipment.
  • Page 4 CAUTION Use the proper fuse. Use of a wrong fuse can result in fire or permanent equipment damage. Do not use the equipment for other than its intended purpose. Personal injury can result if the equipment is used as a chair or stepping stool, for example. Do not objects on the top of the equipment.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS FOREWORD KR-1238/1538 SPECIFICATION KR-1268/1568 SPECIFICATION CONFIGERATION OF KR-1238/1268/1538/1568 1. PRINCIPLE OF OPERATION 1.1 What is Radar? 1.2 How Ships Determined Position Before Radar 1.3 How Radar Determines Range 1.4 How Radar Determines Bearing 1.5 Radar Wave Speed and Antenna Rotation Speed 1.6 The Radar Display 2.
  • Page 6 2.14 Apply the A/C RAIN (reducing rain clutter) 2.15 Erasing the Heading Line 2.16 Measuring the Range 2.17 Measuring the Bearing 2.18 Using the Offset EBL 2.19 Shifting (off centering) the Pcture 2.20 Zoom 2.21 Outputting Target Position 3. MENU OPERATION 3.1 Basic Menu Operation 3.2 Selecting the Presentation Mode 3.3 Magnifying Long Range Echoes (echo stretch)
  • Page 7 5. MAINTENANCE & TROUBLESHOOTING 5.1 Preventative Maintenance 5.2 Replacing the Fuse 5.3 Troubleshooting 5.4 Self Test 5.5 Life Expectancy of Magnetron 6. INSTALLATION 6.1 Antenna Unit Installation Sitting handling considerations 6.2 Display Unit Installation Mounting considerations 6.3 Exchange of Fuse for 24/32V Power Supply 6.4 Checking the Installation 6.5 Adjustments 7.

  • Page 8: Foreword

    FOREWORD Thank you for your choice of ONWA MODEL KR-12X8/15X8 Marine Radar. The radar is designed and constructed to meet the rigorous demands of the marine environment. However, no machine can perform its intended function unless properfly installed and maintained. Please carefully read and follow the recommended procedures for installation, operation and maintenance.

  • Page 9: Kr-1238/1538 Specification

    KR-1238/1538 SPECIFICATION ANTENNA UNIT 1. Radiator Slotted waveguide array 2. Radiator length 55 cm 3. Horizontal beamwidth 4 4. Vertical beamwidth 25 5. Sidelobe Within 20 off mainlobe; less than -18 dB Outside 20 off mainlobe; less than -23 dB 6.
  • Page 10 DISPLAY UNIT 1. Indication system LCD digital display 2. Display 12 or 15 LED backlight, 32-bit TFT Color LCD Display 3. Range scale (nm) Range, Range interval and no. of Rings: 0.125(0.0625,2), 0.25(0.125,2), 0.5(0.125,4), 0.75(0.25,3), 1(0.25,4), 1.5(0.25,6), 2(0.5,4), 3(0.5,6), 4(1,4), 6(1,6), 8(2,4), 12(2,6), 16(4,4), 24(4,6), 36(6,6) 4.

  • Page 11: Kr-1268/1568 Specification

    KR-1268/1568 SPECIFICATION ANTENNA UNIT 1. Radiator: Slotted waveguide array 2. Radiator length 120 cm 3. Horizontal beamwidth 1.9 4. Vertical beamwidth 22 5. Sidelobe Within 20 off mainlobe; less than -24 dB Outside 20 off mainlobe; less than -30 dB 6.
  • Page 12 INTERFACE IEC61162 (NMEA0183) Input data sentences: Own ship`s position: GGA>RMA>RMC>GLL Speed: RMA>RMC>VIG>VHW Heading (True): HDT>HDG*>HDT*>VHW>VHW* Course (True): RMA>RMC>VTG Course (Magnetic): VTG>RMA*>RMC Waypoint (Range, Bearing): RMB>BWC>BWR Loran time difference: RMA>GLC>GTD Water depth: DPT>DBT Water temperature: MDA>MTW XTE: RMB>XTE>APB *: Calculated value based Magnetic variation. AIS: VDO>VDM>ACA>ACS>ALR>ACK Output data sentences:...

  • Page 13: Configeration Of Kr-1238/1268/1538/1568

    CONFIGERATION OF KR-1238/1268/1538/1568 ANTENNA UNIT KR-1238/1538 KR-1268/1568 Antenna cable KRC-003-15/20/30 15/20/30m Display UNIT UPGRADE NMEA-1 4 Pin 5 Pin 7 Pin RS422 NMEA-2 8 Pin 6 Pin 10.5 to 40VDC...

  • Page 14: Principle Of Operation

    1. PRINCIPLE OF OPERATION 1.1 What is Radar? The term "RADAR" is an acronym meaning "RAdio Detection And Ranging". Although the basic principles of radar were developed during World War II, echoes as an aid to navigation is not a new development. 1.2 How Ships Determined Position Before Radar Before the invention of radar, when running in fog near a rugged shoreline, ships would sound a short blast on their whistles, fire a shot, or strike a bell.

  • Page 15: The Radar Display

    1.6 The Radar Display The range and bearing of a target is displayed on what is called a Plan Position Indicator (PPI). This display is essentially a polar diagram, with the transmitting ship's position at the center. Images of target echoes are received and displayed at their relative bearings, and at their distance from the PPI center.

  • Page 16: Basic Operation

    2. BASIC OPERATION 2.1 Control Description Omnipad Shifts cursor, VRM and EBL; select items and options on Brief press: menu. Displays the data of target selected with the cursor (1) Acquires the target selected Long press: SELECT with the ominipad. Terminates plotting of the target CANCEL ENTER...

  • Page 17: Display Indication And Markes

    2.2 Display Indication and Markers Tuning indicator RANGE RING Interference rejector Off center PI LINE Echo Stretch Range Zoom A/C Auto AUTO Range ring interval TRAIL A/C Auto OFF-CENT Pulselength OWN SHIP ZOOM Display mode X-band 255 T SOG 03.5KT WAYPOINT GUARD ZONE 1 22 45.135 N...

  • Page 18: Turning The Radar On And Off

    2.3 Turning the Radar On/Off Press the [POWER] key to turn the radar on or off. The control panel lights and a timer displays the time remaining for warm up of the magnetron (the device which produces radar pulses), counting down from 1:30 to 0:01.
  • Page 19 Conning position is at Radar antenna center of display position is at center of display ANT position CCRP position Range and bearing are measured and graphics are drawn according to reference position as in the table below. Marks, measurements and reference point Reference point Category Item...

  • Page 20: Own Ship Marker

    2.7 Own Ship Marker Own ship marker ( ) may be inscribed on the screen as below. 1. Go to Installation setup menu; " " 2. Select the Own Ship Shape and press [ACQ/ENTER] key; " " 3. Select the Draw and press [ACQ/ENTER] key; "...

  • Page 21: Selecting The Range

    SPEED TRIP Time-to-go to Stand-by ST-BY Speed 10.5 000.3nm DEPTH TEMPERATURE Trip distance since power on Depth +17.3 To Waypoint bearing heading Heading 092.5 Course CRS 180.0 M Time-to-go to WPT TTG 01:08 TO Waypoint 45.0 12.0NM Bearing TO Waypoint OWN SHIP 30 00 .

  • Page 22: Setup Display Color

    2.11 Setup display color In order to adapt to the different environments, the radar echo display the back- ground color and echo color can be set by users themselves, there are five kinds of background colors and three kinds of echo colors available. Setting methods are as follows: 1.By menu 1) Press [FUNCTION] key open main menu;...

  • Page 23: Adjusting The A/C Sea Control (Reducing Sea Clutter)

    2.13 Adjusting the A/C SEA Control (reducing sea clutter) Echoes from waves can be troublesome, covering the central part of the display with random signals known as "sea clutter." The higher the waves, and the higher the scanner above the water, the further the clutter will extend. Sea clutter appears on the display as many small echoes which might affect radar performance.

  • Page 24: Apply The A/C Rain (Reducing Rain Clutter)

    Tip for adjusting the A/C SEA A common mistake is to over-adjust the circuit so all the clutter is removed. As an example set up for maximum STC. You will see how the center of the display becomes dark. This dark zone can be dangerous (targets may be missed), especially if the sensitivity is not properly adjusted.

  • Page 25: Erasing The Heading Line

    Automatic adjustments of A/C SEA and A/C RAIN Push the [A/C Auto] key. "A/C Auto" appears at the bottom left-hand corner of the display when the A/C AUTO circuit is on. You can fine tune by adjusting the [A/C SEA], [A/C RAIN] and [GAIN] controls. 2.15 Erasing the Heading Line The heading line may occasionally mask a target.
  • Page 26 By VRM 1. Press the [EBL/VRM SELECT] key to circumscribe a VRM readout (at the bottom center).Each press of the key selects the readout of EBL1,EBL2,VRM1 or VRM2 in that order. VRM1 VRM2 25.0NM 10.9NM EBL1 EBL2 138 R 152 R Figure 2-7 Display bottom, showing location of EBL and VRM readouts 2.

  • Page 27: Measuring The Bearing

    2.17 Measuring the Bearing There are two ways to measure the bearing to a target: by the cursor, and by the EBL (Electronic Bearing Line). By cursor Operate the omnipad to bisect the target with the cursor intersection. The bearing to the target appears at the bottom of the display.

  • Page 28: Using The Offset Ebl

    Tips for measuring bearing Bearing measurements of smaller targets are more accurate; the center of larger target pips is not as easily identified. Bearings of stationary or slower moving targets are more accurate than Bearings of faster moving targets. To minimize bearing errors keep echoes in the outer half of the pictur e by changing the range scale;...

  • Page 29: Measuring Range And Bearing Between Two Targets

    Measuring range and bearing between two targets The procedure which follows shows how to measure the range and bearing between target "A" and target "B" in Figure 2-11. 1. Press the omnipad to place EBL1 's origin (cursor) on the center of target "A".

  • Page 30: Shifting (Off Centering) The Pcture

    2.19 Shifting (off centering) the Picture Your vessel's position can be shifted up to 75% (not available on 48nm range) of the range in use to view the situation around your vessel without changing the range or size of targets. 1.

  • Page 31: Outputting Target Position

    Cursor Cursor Press [ZOOM] key to zoom Place cursor Where desired Figure 2-13 Zoom Function Note1: Zoom is cancelled when range or presentation mode is changed. Cancelling Zoom Repeat the above steps and select "OFF" 2.21 Outputting Target Position Target position data can be output to the navaid in IEC61162 format.

  • Page 32: Menu Operation

    3. MENU OPERATION 3.1 Basic Menu Operation The menu mostly contains less-often used functions which once preset do not require regular adjustment. To open or close the menu, press the [MENU] key. You can select items on the menu with the omnipad. 1.

  • Page 33: Selecting The Presentation Mode

    3.2 Selecting the presentation mode This radar provides four presentation modes. Head-up, course-up, north-up and true motion 1. Press the [MENU] key. 2. Operate the omnipad to select "MODE". 3. Press the [ACQ/ENTER] key. With heading sensor connection the display and the display and the display mode indication at the top lefthand corner of the display.

  • Page 34: Echo Trail

    Bearing direction Bearing direction Range direction Echo stretch 1 Echo stretch 2 Figure 3-3 Echo stretch Note: This function magnifies not only targets but also sea clutter and radar interference. For this reason be sure the controls for adjustment of sea clutter and radar interference are properly adjusted before activating the echo stretch.

  • Page 35: Suppressing Radar Interference

    Fixed time trail 1. When the elapsed time clock counts up to the trail time selected, the elapsed time display freezes. 2. The oldest portions of trails are erased so only the latest trail, equal in length to the trail time selected, is shown. 3.

  • Page 36: Selecting Pulse Length

    Figure 3-6 Radar interference Four levels of interference are available, including off; I 1, I 2, IR3 and OFF,IR3 provides the highest level of rejection. 1. Press the [MENU] key. 2. Select "VIDEO MENU"and press the [ACQ/ENTER] key. 3. Select "Int Reject". 4.

  • Page 37: Guard Alarm

    3.7 Guard Alarm The guard alarm allows the operator to set the desired range and bearing for a guard zone. When ships, islands, landmasses, etc. Violate the guard zone an audible alarm sounds and the offending target brinks to call the operator's attention.
  • Page 38 Asterisk blinking Guard zone to set G IN Drag cursor here. 2 Drag cursor to top left corner of 1 Mentally create the zone and press [GUARD]. guard zone to set. G IN G IN Guard zone 3 Drag cursor to bottom right corner of zone 4 Guard zone completed.

  • Page 39: Watchman

    3.8 Watchman The watchman function periodically transmits the radar for minute to check for targets in a guard zone. If it finds change in the zone from the previous transmission it sounds the radar continuously. This feature is useful when you do not need the radar's function continuously but want to be alerted to radar targets in a specific area.

  • Page 40: Displaying Navigation Data

    3.9 Displaying Navigation Data Navigation data can be displayed in the data boxes if this radar receives navigation input in IEC 61162 format. Navigation data include. position in latitude and longitude range, bearing and time-to-go to both waypoint selected on the navigator and the cursor.

  • Page 41: Function Menu Description

    3.10 FUNCTION MENU Description Item Description Panel Dimmer Select level of panel backlight. Mark Brill Select brilliance of VRM, EBL, cursor, guard zone and WP marks. HD Mark Select brilliance of heading mark. Characters Select brilliance of characters. WPT Mark Select"On"to display the waypoint mark.

  • Page 42: Video Menu Description

    3.11 VIDEO MENU Description Trail Tone Select brillance of echo trails. Int Reject Select level of interference rejection. Pulselength Select pulselength for 1.5 and 3 mile ranges. Trail Time Select the trail time. Nosie Reject Select On to reject nosie. "...

  • Page 43: Suppressing Nois

    5. Press the [MENU] key to close the menu. Figure 3-12 Function menu 3.13 Suppressing Noise " " Electrical noise can be suppressed by turning on NOISE REJ on the VIDEO menu. 3.14 Adjusting Brilliance of Markers " " Mark brill on the FUNCTION menu adjusts the brilliance of markers such as the...

  • Page 44: False Echoes

    4. FALSE ECHOES Occasionally false echoes appear on the screen at positions where there is no target. In some cases the effects can be reduced or eliminated. The operator should familiarize himself or herself with the appearance and effects of these false echoes, so as not to confuse them with echoes from legitimate contacts.

  • Page 45: Indirect Echoes

    True echo Main-lobe Side-lobe Sprious target Antenna Figure 4-2 Side-lobe echoes 4.3 Indirect Echoes Heading Direct path Iine Target Indirect path Obstruction (mast,funnel Antenna etc.). True Indirect echo echo Target Indirect path Direct Heading path Iine True ship echo Bridge Indirect echo Indirect...

  • Page 46: Blind And Shadow Sectors

    Indirect echoes may be returned from either a passing ship or returned from a reflecting surface on your own ship, for example, a stack. In both cases, the echo will return from a legitimate contact to the antenna by the same indirect path.

  • Page 47: Maintenance & Troubleshooting

    5. MAINTENANCE & TROUBLESHOOTING This chapter tells you how to keep your radar in good working order. Before reviewing this chapter please read the safety information which follows. DANGER Turn off the power before performing any maintenance or troubleshooting procedure. Hazardous voltages can shock, burn or cause death.

  • Page 48: Preventative Maintenance

    5.1 Preventative Maintenance Regular maintenance is important for good performance. Always keep the equipment as free as possible from dirt, dust, and water splashes. Make sure all screws securing the components are properly tightened. A maintenance program should be established and should at least include the items listed in table 5-1.
  • Page 49 If... But... Then... you pressed the try adjusting the control panel the control panel does backlighting on the Function menu. [POWER] key to not light battery may have discharged. turn on the radar check fuse. nothing appears on the try adjusting the brilliance. display or display contrast is poor request service.

  • Page 50: Life Expectancy Of Magnetron

    4. The ROM and RAM are automatically checked. If NG (No Good) appears to the right of ROM or RAM indication, contact your dealer for advice. 5. To check the keyboard, press any key except the omnipad, ACQ and power keys. Its corresponding location on the display lights in black if the key is operating properly.

  • Page 51: Installation

    6. INSTALLATION This chapter provides the procedures necessary for installation. Installation mainly consists of the following: sitting and mounting the display unit and antenna unit connection of the signal cable and the power cable establishing the ground checking the installation, and adjustments.
  • Page 52 Do not paint the radome (Model KR-1238/1538) or to ensure proper emission of the radar waves. When this radar is to be installed on larger vessels, consider the following points: (1) The signal cable run between the antenna and the display comes in lengths of 10 m, 15 m, 20 m and 30 m.
  • Page 53 Mounting platform Holes for antenna unit: The mounting surface must be parallel with the waterline and provided with four holes whose dimensions are shown in the outline drawing attached at the end of this manual. The unit is adjusted so a target echo returned from the bow direction will be shown on the zero degree (heading line) position on the screen.
  • Page 54 Wiring and final preparation Drill a hole of at least 20 millimeters diameter through the deck or bulkhead to run the signal cable between the antenna unit and display unit. (To prevent electrical interference avoid running the signal cable near other electrical equipment and in parallel with power cables.) Pass the cable through the hole.
  • Page 55 Fix the shield cover. Do not pinch the cable. Loosely fasten the radome fixing bolts. You will tighten them after confirming the unit is working normally. Mounting(KR-1568) Figure 6-5 Typical antenna unit mounting locations 1. Drill four fixing bolt holes (13 millimeters dia.), One cable entry hole (approx. 50 millimeters dia.) In the mounting platform.
  • Page 56 Note: Tighten the bolts by their nuts to prevent damage to the seal washer. Do not turn the bolts to secure the antenna housing. Hex head bolt (M12 x 60) Seal washer Silicone sealant Scanner housing Figure 6-7 How to mount the antenna housing Connections Only the signal cable runs from the display unit to the antenna unit.
  • Page 57 4. Fasten the cable fastening bolts 5. Connect the lead wires to RD-AP-1568 in the antenna housing by referring to the Interconnection Diagram. Fasten the ground washer at the bottom of the antenna housing as shown in Figure 6-9. Figure 6-9 Connection in the antenna housing Final preparation 1.
  • Page 58 6-12. Apply grease to the O-ring and set it to the center of the radiator bracket. Coat the radiator fixing bolts with silicone sealant. Fasten the radiator to the radiator bracket with the ONWA logo on the radiator facing ship`s bow. RA12 Figure 6-12 Fastening the radiator to the radiator bracket 4.

  • Page 59: Display Unit Installation Mounting Considerations

    6. Fasten the ground wire (black) of the signal cable to the chassis. 7. Loosely fasten the antenna housing cover. You will tighten the fixing bolts after confirming the unit is working normally. 6.2 Display Unit Installation Mounting considerations When selecting a mounting location for the display unit keep in mind the following points.
  • Page 60 Connections Connect the power cable to the power cable connector on the rear of the display unit. Connect the signal cable to connector on the rear of the display unit. Run a ground wire (local supply) between the ground terminal on the rear of the display unit and the ship's superstructure.
  • Page 61 NMEA-2 Connector NMEA-1 Connector Antenna RS-422 Power FUSE UPGRADE Figure 6-14 KR-1238/1268 Display connectors NMEA-1 Connector Antenna NMEA-2 Connector RS-422 UPGRADE Power FUSE Figure 6-15 KR-1538/1568 Display connectors CAUTION CAUTION Ground the equipment. Replace ther fuses to 5A for Ungrounded equipment might 24/32VDC operation emit or receive electromagnetic interference or cause electrical...

  • Page 62: Exchange Of Fuse For 24/32V Power Supply

    1. Turn off the radar. While pressing and holding down the [GAIN] control press the [POWER] key. 2. Release [GAIN] control knob when you see "ONWA" logo and wait for finish standby (finish count down). 3. Press the [MENU] key, and select "FUNCTION MENU" by using the omnipad, and pressing [ACQ/ENTER] key.
  • Page 63 Figure 6-16 Installation setup menu Adjusting tune/video Do the following to adjust tune and video amplifier level input. 1. Press the [ST BY/TX] key to transmit. WARNING Before transmitting the radar make sure no one is near the antenna unit, to prevent the potential risk of being struck by the rotation antenna and exposure to radiation hazard.
  • Page 64 Entering STC range 1. Select " STC Range " on the installation setup menu and press the [ACQ/ENTER] key. 2. Operate the omnipad to select 1 (about 6NM), 2 (about 4NM), 3 (about 3NM), 4 (about 2NM) 3. Press the [ACQ/ENTER] key. Aligning heading (Adjustment sector:0~359.90) You have mounted the antenna unit facing straight ahead in the direction of the how.
  • Page 65 Adjusting sweep timing(Adjustment range:0.000~4.266nm) This adjustment ensures proper radar performance, especially on short ranges. The radar measures the time required for a transmitted echo appears on the display based on this time. Thus, at the instant the transmitter is fired, the sweep should start from the center of the display (sometimes called sweep origin.) A trigger pulse generated in the display unit goes to the antenna unit through the signal cable to trigger the transmitter (magnetron).
  • Page 66 Adjusting MBS (Main Ban Suppression) (Adjustment: 0.00~0.25) Main bang (black hole), which appears at the display center on short ranges, can be suppressed as follows. 1. Transmit on long range about 10 minutes. 2. Adjust the gain to show a small amount of noise on the display. 3.
  • Page 67 This area can be turned on/off on the VIDEO MENU. Note: This setting should be done after other adjustment are finished. Magnetron heater voltage Magnetron heater voltage is formed at the MOD Board of the antenna unit and preadjusted at the factory for use with any length of signal cable. Therefore no adjustment is required.

  • Page 68: Arpa

    NOTICE The installation must be done by a ONWA representative or suitably qualified radar technician. Authorities require this. Keep magnets and magnetic fields away from the equipment.
  • Page 69 Operation of ARPA General The Auto Plotter permits manual or automatic acquisition and automatic tracking of up to 20 radar targets. An internal microprocessor calculates target data such as speeds and courses and display the results in alphanumeric and by vectors. To ensure the reliability of the displayed target data, the radar must be properly adjusted for minimum sea returns and noise.
  • Page 70 ARPA MENU Operation The ARPA MENU operation includes the followings; Display: Turns on/off the plot symbols, past positions and target data. All Cancel: Cancels the tracking of all targets. Vector Ref: Selects relative vector or true vectors. To select your choice, open the ARPA menu, and the legend Rel and True appear on the "3.

  • Page 71: Lost Target

    Figure AP-1 ARP Menu Target under auto tracking but not selected for cursor data reading Target selected for data reading AUTO A/C Auto TRAIL OFF-CENT OWN SHIP ZOOM X-band 255 T SOG 03.5KT WAYPOINT 22 45.135 N 21.237 E **.** ACQ ZONE 1 ACQ ZONE 2 1.02~2.10NM...
  • Page 72 Deactivation the Auto Plotter To deactivate the Auto Plotter. 1. Open the "ARP MENU". 2. Operate the omnipad to select the "Display". 3. Operate the omnipad to select "Off". 4. Press the [ACQ/ENTER] key. 5. Press the [MENU] key to close the menu. Acquiring targets Manual Acquisition Follow the steps below to manually acquire a target.
  • Page 73 Note 3: When auto acquisition mode (Auto ACQ) is on, up to 5 target can be acquired. For detail, see next section titled Automatic Acquisition. WARNING When a tracked target nears another tracked target the targets may be "swapped."When two target come close to each other, one of the two can become a "lost targets."Should this happen, reacquisition of the "lost target"is required after the two targets have separated.
  • Page 74 Terminating Tracking of Targets When the Auto Plotter has acquired 20 targets, no more acquisition occurs unless targets are lost. Should this happen, cancel tracking of individual target or all targets by the procedure described below. Individual Targets Place the cursor (+) on a target which you do not want to be tracked any longer by operating the omnipad and press andgold down the [SELECT/CANCEL] key.
  • Page 75 COURSE/SPEED (Course/Speed): Course and speed are displayed for the lastplotted or selected target with suffix "T"(Ture) or "M"(Magnetic). For true bearings suffix "T"is used in case of gyroc- ompass input and suffix "M"is used in case of magnetic compass input. CPA (Closest Point of Approach) is the closest range a target will approach to own ship.
  • Page 76 CPA/TCPA Alarm Visual and audible alarm are generated when the predicted CPA and TCPA of any target become less than their preset limits. The audible alarm continues for 10 se- conds. The Auto plotter ARPA continuously monitors the predicted range at the Closest Point of Approach (CPA) and predicted time to CPA(TCPA) of each tracked target to own ship.
  • Page 77 The flashing of the triangle plot symbol and vector remain on the screen until the dangerous situation is no longer present or you intentionally terminate tracking of the target by using the [SELECT/CANCEL] key. Lost Target Alarm When the system detects a loss of a tracked target, the target symbol becomes a flashing diamond.

  • Page 78: Ais

    8. AIS How AIS Works Automatic Identification System (AIS) is a reporting system used in the identification of marine vessels and its location. Vessels equipped with this system allows each other to communicate automatically, dynamically and regularly update their position, speed, course and information such as vessel identity.
  • Page 79 2. Select [ AIS MENU ] & press [ ACQ/ENTER ] key, Select 1.Display , " " press [ ] or [ ] key select On & p ress [ MENU] k ey t o r eturn. N ow " "...
  • Page 80 How to determine the target ships detailed information There are two methods by which we can view a ships sailing detailed information: 1. By keyboard From the list of AIS information, select the direction key and press [ACQ/ENTER] , on Figure 3 , the detailed data of the current selected ship information shall be displayed.
  • Page 81 How to view your ships AIS information? Press AIS menu, select Own Ship Data then AIS detailed information will " " appear as shown in Figure 7. Figure 7 Own Ship data Setting vector length of time This function is used to set your ship and target ships vector length. The mark represents the vector in accordance with the present voyage.
  • Page 82 Past Position Display The past position display shows equally time-spaced dots marking past positions of activated AIS targets. A new dot is added at preset time intervals until the preset number is reached. If a target changes its speed, the spacing will be uneven.
  • Page 83 Setting the CPA and TCPA ranges Enter AIS menu, select CPA. Set & TCPA. Set , then press direction key choose the value you want. Below are CPA & TCPA can be setup value CPA. Set Off, 0.5, 1, 2, 3, 5, 6 nm TCPA.
  • Page 84 Prompted of data processing The radar system can access a variety of NMEA data, including AIS / GPS, direction and water depth data. At boot time, if not turned on AIS, the radar will appear on-screen prompts such as: "No AIS device." To know there are many, such as "AIS signal loss"...
  • Page 85 Other symbol description Other AIS symbols that may appear are shown in the table below. SYMBOL Meaning Real AIS AtoN Virtual AIS AtoN Base Station Airborne SAR aircraft AIS SARTS Figure 14 Other symbol TYPE COLOR REMARK Military Gray Yacht/Fishing/Class B Pink Tanker/Cargo Orange...

  • Page 86: Display Unit Size

    9. DISPLAY UNIT AND ANTENNA UNIT SIZE TYPE KRD-1005 KR-1238 NAME DISPLAY UNIT KR-1268...
  • Page 87 TYPE KRD-1006 KR-1538 NAME DISPLAY UNIT KR-1568...
  • Page 88 Front CABLE ENTRY 4-M10 ONWA ONWA Antenna base plate Packing Effective Radome thread length 25mm 5 -10 mm Flat washer Platform Spring washer Hex bolt Apply silicone sealant MODE KRA-1003 KR-1238 KR-1538 NAME SCANNER UNIT...
  • Page 89 1250 RA12 1800 R 18 RADIATOR S=1/25 M12 BOLT SEAL WASHER CW10530X PLATFORM F.W . M12 NUT CENTER OF ROTSTION FIXING HOLES CABLE ENTRY MOUNTING DIMEENSIONS FLAT WASHER MODE KRA-2004 KR-1268 4-M4 10 KR-1568 NAME SCANNER UNIT...

  • Page 90: Abbreviations

    ABBREVIATIONS Word Abbreviations Word Abbreviations Acknowledge Maximum Adjust, Acquisition Medium Pulse Adjust, Adjustment Menu MENU ALARM Alarm Minimum Anchor Watch Minute(s) ANCH Antenna Nautical Mile(s) Anti Clutter Rain RAIN Navigation Anti Clutter sea Normal NORM Automatic AUTO Normal NORMAL Automatic Identification System North Bearing North...
  • Page 91 Word Word Abbreviations Abbreviations Error Route ROUTE Error ERROR S-Band S-BAND Estimated Time of Arrival Search And Rescue Transponder SART Fathom(s) Second(s) Feet/Foot Select Full Short Pulse Full FULL Speed Gain GAIN Speed Over the Ground Global Positioning System Speed Through the Water Ground Stabilized STAB...

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