Page 2: Preface
PREFACE Thank you very much for purchasing the JRC marine radar equipment, JMA-7710-6 and JMA-7725-6 This equipment is a marine radar equipment designed to obtain safe operation of marine ships. The equipment consists of a radar signal transceiver unit, a CRT display unit and a scanner unit as its main units.
Page 3: Before Operation
Before Operation Pictorial Indication Various pictorial indications are included in this manual and are shown on these equipment so that you can operate them safely and correctly and prevent any danger to you and or to other persons and any damage to your property during operation. Such indications and their meanings are as follows.
Page 4: Cautions To Be Used During Operation
Cautions to be Used During Operation WARNING Do not touch the insides of the scanner, transceiver and dis- play unit. Touching any high voltage area, you will get an electric shock. For maintenance, inspection and adjustment of internal parts of these equipment, consult with our sales office or distributor in your district.
Page 5: Precautions Before Operation
NNNN NNNN PRECAUTIONS BEFORE OPERATION Cautions for high voltage High voltages from hundreds volts to tens of thousands volts are to be applied to the electronic equipment such radio and radar devices. You do not face any danger during normal operation, but sufficient cares are required for maintenance, inspection and adjustment of their internal components.
Page 6: First Aid Treatments
NNNNNNNNN NNNNNNNNN FIRST AID TREATMENTS ✩ First-aid treatments As far as the victim of electric shock is not in dangerous condition, do not move him and practice artificial respiration on him immediately. Once started, it should be continued rhythmically. (1) Do not touch the victim confusedly as a result of the accident, but the rescuer may also get an electric shock.
Page 7: When Pulse Is Beating But Breathing Has Stopped
✩ When pulse is beating but breathing has stopped (1) Tilt the victim’s head back as far as this face looks back. (A pillow may be inserted under his neck.) (2) Push his jaw upward to open his throat wide (to spread his airway). (3) Pinch the victim’s nostrils and take a deep breath, block his mouth completely with yours and blow into his mouth strongly.
Page 8: When Both Pulse And Breathing Have Stopped
✩ When both pulse and breathing have stopped When no pulse has come not to be felt, his pupils are open and no heartbeat is heard, cardiac arrest is supposed to have occurred and artificial respiration must be performed. (1) Place your both hands, one hand on the other, on the lower one third area of his breastbone and compress his breast with your elbows applying your weight on his breast so that it is dented about 2cm (repeat compressing his breast 50 times or so a minute).
Page 9: Equipment Appearance
EQUIPMENT APPEARANCE Scanner Type NKE-1055-6 (6 feet) Scanner Type NKE-1056-6M (6 feet) Scanner Type NKE-1056-9M (9 feet) Display Unit Type NCD-3901-2 VIII...
Page 10: Table Of Contents
CONTENTS PREFACE ········································································································ I Before Operation ··························································································· II Cautions to be Used During Operation ······················································ III PRECAUTIONS BEFORE OPERATION ····················································· IV Cautions for high voltage ......................IV What to do in case of electric shock ..................IV FIRST AID TREATMENTS ············································································ V ✩...
Page 11 3.1.4 Observation and Video Adjustment ................3-4 3.1.5 Data Acquisition and Measurement ................3-4 3.1.6 Ending Operation and Stopping the System ..............3-4 3.2 Preparation ························································································3-5 3.2.1 Tuning [TUNE] ......................3-5 3.2.2 Adjusting Sensitivity [GAIN] ..................3-5 3.2.3 Adjusting CRT Brilliance [BRILL] ................3-5 3.2.4 Suppressing Sea Clutter [SEA] ..................
Page 12 Displaying the ERC Card ....................3-76 3.5.3 Displaying the JRC Chart ....................3-77 3.5.4 Displaying the Contour of the Shoreline ROM Card by JRC ........3-78 3.6 Displaying Own Ship Track ····························································3-79 3.6.1 Changing Track Color [When equipped with the plotter] ..........3-79 3.6.2...
Page 13 5. OPERATIONS OF ATA (OPTION) 5.1 Initialization ························································································5-2 5.1.1 Setting Collision Judgment Conditions : SAFE LIMIT ..........5-2 5.1.2 Automatically Set Mode (at Activation) ................. 5-7 5.1.3 Setting a Range Scale ...................... 5-7 5.2 Display Mode ·····················································································5-8 5.2.1 Setting the Motion Display Mode [TM RM] ..............
Page 14: True And False Echoes On Display
5.13 Simulation (Checking the ATA according to a Pseudo Target) ·····················5-42 6. TRUE AND FALSE ECHOES ON DISPLAY 6.1 Radar Line-of-sight Range ·······························································6-1 6.2 Strength of Reflection from Target ··················································6-3 6.3 Sea Clutters ·······················································································6-3 6.4 False Echoes ·····················································································6-3 6.5 Display of Radar Transponder ·························································6-6 7.
Page 15 10. DISPOSAL 10.1 Equipment Disposal ········································································10-1 10.2 Disposal of Used Batteries ·····························································10-2 10.3 Disposal of Used Magnetron ··························································10-3 11. SPECIFICATION 11.1 General Specification JMA-7710-6 JMA-7725-6 JMA-7725-9····································11-1 11.2 Scanner Unit NKE-1055-6 ······························································11-2 11.3 Scanner Unit NKE-1056-6M 9M ·················································11-3 11.4 Display Unit NCD-3901-2 ································································11-4...
Page 16 Appendix 3 Terminal Board Connection Diagram of Radar Type JMA-7710-6 Appendix 4 Terminal Board Connection Diagram of Radar Type JMA-7725-6 Appendix 5 Primary Power Supply System Diagram of Radar Type JMA-7710-6 and JMA-7725-6 Appendix 6 Internal Connection Diagram of Scanner Unit Type NKE-1055...
Page 17: Glossary
GLOSSARY This section explains common maritime terms and the terms used for this equipment. ATA (Automatic Tracking Aid) : Supporting equipment for automatically preventing clash. Fast Time Constant (FTC) : Rain and snow clutter suppression. Sensitivity Time Control (STC) : Sea surface clutter suppression.
Page 18 Relative course : The direction of motion of a target relative to own ship's position expressed as an angular displacement from north. It is deduced from a number of measurements of target range and bearing on own ship's radar Relative speed : The speed of a target relative to own ship's position.
Page 19 XVIII...
Page 20 GENERAL AND EQUIPMENT COMPOSITION NAMES AND FUNCTIONS OF CONTROL PANEL SWITCHES AND MENU COMPOSITION BASIC OPERATION MEASUREMENT OPERATIONS OF ATA (OPTION) TRUE AND FALSE ECHOES ON DISPLAY MAINTENANCE COUNTERMEASURES FOR TROUBLE AND ADJUSTMENT AFTER-SALES SERVICE DISPOSAL SPECIFICATION APPENDIX...
Page 21: General And Equipment Composition
GENERAL AND EQUIPMENT COMPOSITION 1.1 Functions······························································1-1 1.2 Features ································································1-3 1.3 Composition ·························································1-4 1.4 Configuration ·······················································1-5 1.5 General System Diagram ··································1-10 1.6 Concept of Collision Avoidance Measures (Explanotory Notes) ··········································1-14...
Page 22: Functions
Functions This equipment is a high performance, high quality, highly reliable and totally-large-scale-integrated (excluding special electronic tubes) radar composed of a scanner, a transceiver and a display unit with a high resolution color CRT which adopts the raster scan method. 1.1.1 Functions of This Equipment 1.1.1.1 Functions of Radar The JMA-7700 series color radar is designed in accordance with IMO (International Maritime Organization)
Page 23 [IV] Fourth Stage : Indication The above information must be informed to the officer maneuvering the own ship. A variety of indicating methods are available including cathode ray tube and numerical indicator, and various data are available. This system indicates unprocessed video, vectors (to be selected from true vector and relative vector) of other ships and identification marks of danger ship or safe ship for these ships on the usual radar scope.
Page 24: Features
Features Large, high resolution, easily visible diaplay Thanks to the built-in high-precision (1024 × 768 pixels), non interlacing 21-inch color CRT, a radar video area of more than 250 mm is available. High resolution, near range video images can also be displayed.
Page 25: Composition
Trans- Radar type Scanner unit Display unit mitting Band Ship's power supply output NKE-1055-6 NCD-3901-2 AC220V, JMA-7710-6 10 kW (6ft slot anttenna) × 1 × 1 60Hz, 1φ NKE-1056-6M NCD-3901-2 JMA-7725-6 25 kW (6ft slot antenna) × 1 × 1...
Page 26: Configuration
Configuration Outline Drawing of Scanner Unit Type NKE-1055-6 ....Fig. 1.1 Outline Drawing of Scanner Unit Type NKE-1056-6M ....Fig. 1.2 Outline Drawing of Scanner Unit Type NKE-1056-9M ....Fig. 1.3 Outline Drawing of Display Unit Type NCD-3901-2 ..... Fig. 1.4 1 –...
Page 31: General System Diagram
General System Diagram General System Drawing of Radar Type JMA-7710-6 ....Fig. 1.5 General System Drawing of Radar Type JMA-7725-6 ....Fig. 1.6 General System Drawing of Radar Type JMA-7725-9 ....Fig. 1.7 1 – 10...
Page 32 Fig. 1.5 General System Drawing of Radar Type JMA-7710-6 1 – 11...
Page 33 Fig. 1.6 General System Drawing of Radar Type JMA-7725-6 1 – 12...
Page 34 Fig. 1.7 General System Drawing of Radar Type JMA-7725-9 1 – 13...
Page 35: Concept Of Collision Avoidance Measures
Concept of Collision Avoidance Measures (Explanatory Notes) COLLISION AVOIDANCE Necessity of Collision Avoidance ···························································· Disasters at sea, in particular collisions, have been highlighted as ship’s tonnage and speed as well as ocean traffic increased. A collision of a tanker carrying dangerous matter(s) such as crude oil against a ship brings considerable damages to not only the tanker and the ship but also other ships traveling around, port facilities, inhabitants along nearby coast, fishery resources, etc.
Page 36 Basic Concept of Collision Avoidance ···················································· Collision avoidance has two aspects: prediction and avoidance of collision. The prediction of collision is to predict that plural ships come across at a point, and the avoidance is to maneuver ships so as not to come across at the same point with other ships. In actual practice of maneuvering ships, however, a closed area should be considered instead of a single point.
Page 37 Relative Vector and True Vector ······························································· When collision avoidance is considered from the view point of the two aspects (prediction and avoidance), the relative vector is necessary for the prediction and the true vector is necessary for the avoidance to find aspects of other ships. Fig.
Page 38 Set Stabilization ························································································· Sea stabilization gives correct course and speed through the water. Heading and Speed inputs from gyro compass and a single axis log (or manually set speed) provide a sea stabilized presentation. The entire philosophy of Collision Avoidance is based upon knowledge of the heading of other vessels in close quater situations.
Page 39: Names And Functions Of Control Panel Switches And Menu Composition
NAMES AND FUNCTIONS OF CONTROL PANEL SWITCHES AND MENU COMPOSITION 2.1 Names and Functions of Control Panel·············2-1 2.2 Menu Composition ············································2-13...
Page 40: Names And Functions Of Control Panel
Names and Functions of Control Panel CAUTION Do not put anythig on the touch panel. Deforming may occur if a hot object is placed on it. Do not apply a strong shock to the touch panel, track ball, and controls, otherwise they may get out of order.
Page 41 JMA-7700 SERIES RASTER SCAN RADAR 16 5 42 14 17 31 32 F EBL EBL1 VRM1 EBL2 VRM2 26 25 40 41 43 Display Control Panel 2 – 2...
Page 42 Operation controls and keys Those preceded by a number enclosed in a box are the controls and keys used with ATA model NCA-843. [SUB MENU] key Displays the sub menu on the screen. [MAIN MENU] key Displays the main menu on the screen. Trackball Moves the cursor to a desired position.
Page 43 [DAY NIGHT] key Switches the screen color and brilliance according to each setting. [OFF CENT] key Moves the position of the own ship within the screen to display your desired direction wide (within 66% of the radius) or returns the ship to the center. [RR] (RANGE RINGS) key Turns the fixed range scale display on and off.
Page 44 ‹ 3 [TGT DATA] key Displays the target numerical values or sets or clears the target number using the EPA or ATA. [ACQ] key Manually acquires the target when the EPA or ATA is used. ] (originating point) key Measures the distance between two points with the end point switch (in the radar mode). Sets the simple course between two points with the end point switch (in the composite and plotter modes).
Page 45 Clears the entry of numerical data and the target number in the EPA or ATA, etc. RAM card slot The JRC ERC chart ROM card is inserted here to display the chart. The RAM card is inserted here to plays back the data stored inside.
Page 46 u i o Screen Readouts 2 – 7...
Page 47 range ring spacing → 3.3.3 Range Selecting Range Scales [RANGE] 3.3.11 Displaying Fixed Range Ring [RR] → 3.3.7 Bearing display Selecting Presentation Mode [PRESENTA- TION MODE] Relative motion (RM) true motion (TM) display → 3.3.8 Selecting True Motion Relative Motion Display Modes [TM RM] [TM RST] Standby (STBY)
Page 48 u i o Screen Readouts with ATA 2 – 9...
Page 49 range ring spacing → 3.3.3 Range Selecting Range Scales [RANGE] → 3.3.11 Displaying Fixed Range Ring [RR] → 3.3.7 Bearing display Selecting Presentation Mode [PRESEN- TATION MODE] Relative motion (RM) true motion (TM) display → 3.3.8 Selecting True Motion Relative Motion Display Modes [TM RM] [TM RST] Standby (STBY)
Page 50 u i o Screen Readouts With Plotter Option and ATA (R+P Mode) 2 – 11...
Page 51 range ring spacing → 3.3.3 Range Selecting Range Scales [RANGE] → 3.3.11 Displaying Fixed Range Ring [RR] → 3.3.7 Bearing display Selecting Presentation Mode [PRESENTA- TION MODE] Relative motion (RM) true motion (TM) display → 3.3.8 Selecting True Motion Relative Motion Display Modes [TM RM] [TM RST] Standby (STBY)
Page 52: Menu Composition
Menu Composition In addition to functions to be selected using keys on the front panel, this radar has some other functions available on menus. To select these functions, press the numeric keys ( keys. The menu are composed as follows: [MAIN MENU] MAIN Pressing this key opens the main menu on the bottom of the screen and pressing again clears...
Page 53: Menu List
2.2.2 Menu List MAIN MENU MAIN MENU 1. RADAR/TRAIL BRILL 2. RR/VRM/EBL BRILL 3. ATA BRILL 4. GRAPHIC DATA BRILL 5. PROCESS 6. IR 7. FLOATING EBL 8. VECTOR 9. GRAPHIC DATA DISP OFF MENU SUB MENU 1. RADAR #1 MENU 2.
Page 54 MENU RADAR #1 RADAR VIDEO 1. TARGET EXPANSION 1. VIDEO LATITUDE 2. RADAR VIDEO MENU 2. VIDEO NOISE REJECTION 3. RADAR TRAILS MENU 3. AUTO DR CONT 4. ZOOM 4. PROCESS SWITCHING 5. PROC SWITCH RANGE 7. DISPLAY COLOR MENU RADAR TRAILS 1.
Page 55 1. GRID DISPLAY 2. DELETE OWN TRACK 2. JRC/ERC CARD MENU 2. SOUNDING DISPLAY 3. OWN TRACK MEMORY 3. CONTOUR OF JRC CARD MENU 3. SOUNDING DEPTH UNIT 4. DISP OWN TRACK COLOR 4. NAV INFORMATION 4. LIGHT SECTORS DISPLAY 5.
Page 56 MENU INIT SET #1 INIT SET #2 INIT SET #3 1. BEARING ADJUSTMENT 1. SHIFT COAST LINE #1 2. SPEED EQUIPMENT 2. RANGE ADJUSTMENT 2. SHIFT COAST LINE #2 3. MANUAL SPEED 3. TUNE ADJUSTMENT 3. LAT/LON CORRECTION 4. FUNCTION MENU 4.
Page 57 INIT SET #4 MAINTENANCE MENU SENSOR TEST 0. PREVIOUS MENU 1. MAINTENANCE MENU (STBY) 1. ANTENNA HIGHT SAFETY SWITCH 2. DIAGNOSTIC #1 MENU BEARING PULSE (BP) 3. DIAGNOSTIC #2 MENU (STBY) 3. ANTENNA SWITCH BEARING PULSE (BZ) 4. PARTIAL MASTER RESET 5.
Page 58 MENU PLOTTER WPT/ROUTE WPT SKIP/BACK SKIP MENU 0. PREVIOUS MENU 1. WPT/ROUTE MENU 1. WAYPOINT ALARM 1. WPT SKIP 2. WPT SETTING MENU (STBY) 2. ROUTE ALARM 2. WPT BACK SKIP 3. DISP/DEL OF TRK/MARK COLOR MENU 3. SETTING OF ROUTE SEQUENCE (STBY) 4.
Page 59: Basic Operation
BASIC OPERATION 3.1 Flow of Operation ················································3-1 3.2 Preparation ···························································3-5 3.3 Basic Operation ·················································3-15 3.4 Using Function Key [FUNC]······························3-62 3.5 Displaying the Chart ··········································3-75 3.6 Displaying Own Ship Track ······························3-79 3.7 Displaying Navigation Information ··················3-89...
Page 60: Flow Of Operation
Flow of Operation Turning power on and starting the system Tuning Observation and video adjustment Data acquisition and measurement Ending operation and stopping the system Basic operation is explained on the following pages. 3 – 1...
Page 61 3.1.1 Turning Power on and Starting the System CAUTION The radar may be damaged if the 100 V AC/200 V AC changeover switch on the back of the indicator is not set in the correct direction according to the ship's power. 1.
Page 62: Degauss
3.1.2 Degauss 1. Press the DEGAUSS key to degauss the screen. Procedures Procedures Attention Use this function only when degaussing is necessary due to misalignment of colors, etc. on the screen. A sufficient effect can be obtained from one cycle of degaussing. There is no need to perform successive degaussing.
Page 63: Observation And Video Adjustment
3.1.4 Observation and Video Adjustment RANGE 1. Press the key to select the range appropriate for observation. Procedures Procedures BRILL GAIN 2. Turn the controls so that the target is displayed most clearly. 3.1.5 Data Acquisition and Measurement For details, see section “3.3 Basic Operation” and chapter “4 Measurement”. 3.1.6 Ending Operation and Stopping the System To stop transmission Press the...
Page 64: Preparation
Preparation 3.2.1 Tuning [TUNE] TUNE AUTO This control is used to tune the receiver. When the tuning does not match, the receiving sensitivity decreases and the operator may miss weak or distant targets. For manual tuning, adjust the TUNE control so that the target is displayed most clearly. If radar display doesn't show radar return, adjust the control until the tuning bar on the lower left of the screen indicates its maximum right.
Page 65: Suppressing Sea Clutter [Sea]
3.2.4 Suppressing Sea Clutter [SEA] AUTO This control is used to suppress sea clutter. Although turning it clockwise increases the suppressing effect, excessive suppressing could miss weak target at short range. To use Auto Suppressing Sea Clutter mode AUTO 1. Adjust the so that the target is displayed most clearly.
Page 66: Suppressing Rain And Snow Clutter [Rain]
3.2.5 Suppressing Rain and Snow Clutter [RAIN] RAIN AUTO This control is used to suppress rain/snow clutter. Although turning it clockwise enables contours of targets obscured by rain/snow clutter to be seen, excessive suppressing could miss weak targets. It is more effective for suppressing sea clutter to use this control together with the [SEA] control.
Page 67: Adjusting Brilliance
3.2.6 Adjusting Brilliance MAIN 1. Press the key to open the main menu. Procedures Procedures MENU Brilliance increases in the four levels as shown below every time each setting key for adjusting brilliance is pressed and pressing it again returns the system to the original status. [RADAR TRACK BRILL]: Adjusts brilliance of radar video.
Page 68: Selecting Day Night Modes [Day Night]
3.2.7 Selecting DAY NIGHT Modes [DAY NIGHT] Press the key. Procedures Procedures NIGHT NIGHT Pressing this key changes the mode from "DAY1" to "DAY2", "NIGHT1" to "NIGHT2" in this order. NIGHT NIGHT NIGHT The brilliance set at the time of selecting each mode is stored. For adjusting brilliance, refer to subsection “3.2.6 Adjusting Brilliance”.
Page 69: Setting Color
3.2.8 Setting Color This control is used to set the background colors of inside and outside the bearing scale as well as radar and trail video colors in each mode (four modes of DAY1, 2 and NIGHT1 and 2). The following colors can be set. Element Colors that can be set BACKGROUND COLOR...
Page 70: Background Color
3.2.8.1 Background Color 1. Press the key to open the SUB MENU. Procedures Procedures MENU 2. Press the key to open the RADAR #1 menu. 3. Press the key to open the BACKGROUND menu. 4. Press the key to select the background color inside the bearing scale.
Page 71: Setting Radar Video And Trails Color
3.2.8.2 Setting Radar Video and Trails Color 1. Press the key to open the SUB MENU. Procedures MENU 2. Press the key to open the RADAR #1 menu. 3. Press the key to open the BACKGROUND menu. 4. Press the key to open the RADAR COLOR menu.
Page 72: Rejecting Radar Interference
3.2.9 Rejecting Radar Interference Attention If you'll watch the RADAR BEACON and the SART, set IR as follows. MAIN 1. Press the key to open the MAIN MENU. Procedures MENU 2. Press the key to select "IR". 3. Press the key to select "OFF", "IR1", "IR2"...
Page 73: Stabilization
3.2.11 Stabilization Sea Stabilization Sea stabilization gives correct course and speed through the water. Heading and Speed inputs from gyro compass and a single axis log (or manually set speed) provide a sea stabilized presentation. The entire philosophy of Collision Avoidance is based upon knowledge of the heading of other vessels in close quater situations.
Page 74: Basic Operation
Basic Operation Attention If you'll watch the RADAR BEACON and the SART, set the process as follows. PROCESS 3.3.1 Using Trackball to Move Cursor "+" The cursor mark "+" is often used to designate positions in various operations. The cursor mark is interlocked with motions of the trackball.
Page 75 Displaying EBL Procedures Procedures The EBL currently selected is displayed in a box on the lower left of the screen. EBL1 Pressing the [EBL1 EBL2] key once displays (selects) EBL1. EBL2 Pressing it again displays (selects) EBL2. EBL1 EBL2 Clearing EBL Pressing the [EBL OFF] switch once clears the EBL outside a box on the lower left of the screen.
Page 76 Setting EBL Display Select EBL true and relative bearing display. 1. Press the key to open the SUB MENU. Procedures Procedures MENU 2. Press the key to open the RADAR #2 menu. 3. Press the key to select "EBL BEARING". 4.
Page 77: Selecting Range Scales [Range]
3.3.3 Selecting Range Scales [RANGE] Range scale (nm) RANGE Fixed range ring spacing (nm) The operator can select various range scale among 0.125, 0.25, 0.5, 0.75, 1.5, 3, 6, 12, 24, 32, 48, 96 /120 RANGE RANGE (nm). Press the minus (-) side of the key to decrease the range or plus (+) side of the key to increase it.
Page 78: Using Parallel Index Line
3.3.6 Using Parallel Index Line The parallel index line is displayed in half area of radar display. 1. Press the key to open the SUB MENU. Procedures Procedures MENU 2. Press the key to open the RADAR #2 menu. 3. Press the key to select "PARALLEL INDEX LINE".
Page 79 Motion of Parallel Index Line The parallel index line rotate in the same direction as the EBL control (q and w). The parallel index line interval can be changed by rotating the VRM control (e and r). The angle of the parallel index line is displayed in the EBL2 box on the lower left of the screen.
Page 80: Selecting Presentation Mode [Presentation Mode]
3.3.7 Selecting Presentation Mode [PRESENTATION MODE] This control switches presentation mode from [Head Up] to [Course Up], [North up] to [Stabilized Course Up] every time the switch is pressed. The current presentation mode is displayed as "HUP", "CUP", "NUP" or "SCUP" on the upper right of the screen.
Page 81: Selecting True Motion Relative Motion Display Modes [Tm Rm] [Tm Rst]
3.3.8 Selecting True Motion Relative Motion Display Modes RM] [TM RST] Outline of the Motion Mode • The "Motion mode" determines in which motion of relative motion or true motion the moving of the own ship and other targets are displayed. •...
Page 82 To reset own ship position in the true motion display (TM) mode Press the key. The own ship is reset to the position where it was when the true motion mode was selected and will start moving from the position. Combinations of Presentation Mode and Motion Mode •...
Page 83: Changing Own Ship Display Position [Off Cent]
3.3.9 Changing Own Ship Display Position [OFF CENT] key is used to offset own ship in any direction up to 65% of the radar display radius. This CENT function is convenient when watching a direction in a wide range. This function cannot be used in the range scale of 96 and 120nm. 1.
Page 84: Displaying Other Ship's Trails [Trails]
3.3.10 Displaying Other Ship's Trails [TRAILS] Movements and speeds of other ships can be checked from lengths and directions of their trails as well as synthetic afterglow, which helps avoid collisions of ships. Trail length can be changed over to eight levels of 1min, 3min, 6min, 12min, 15min, 30min, 60min and continuous.
Page 85: Displaying Fixed Range Ring [Rr]
Motion of Radar Trails When the radar Trails display is turned off, the memory for the Trails which has been displayed is cleared. The radar Trails memory is also cleared when the TM mode is automatically or manually reset, the range is switched, or the off-center function is used.
Page 86 When EBL2 is used in the floating mode EBL2 VRM1 EBL1 VRM2 Displaying VRM VRM1 The VRM currently selected is displayed in a box on the lower left VRM2 of the screen. Pressing the [VRM1 VRM2] key once displays (selects) VRM1. Pressing it again displays (selects) VRM2.
Page 87: Using Alarm [Gz Menu]
3.3.13 Using Alarm [ALARM] In this section the alarm function is explained as the optional ATA unit is not installed. Guard zones can be set in order to watch out entries of other ships or targets into the Guard zones. To set radar alarm function Specify whether to use the function for outputting an alarm using the set Guard zone or not.
Page 88 To set the radar alarm zone 1. Press the key to open RADAR ALARM menu. Procedures Procedures MENU 2. Press the key to select "RADAR SECTOR ZONE". 3. Pressing the key clears the menu and displays the radar screen. 4. Turn the EBL and VRM controls to set the radar alarm range and press key.
Page 89 To set the alarm sound Specify whether to output alarm sound in case of an alarm or not. 1. Press the key to open RADAR ALARM menu. Procedures Procedures MENU 2. Press the key to select "AUDIBLE RADAR ALARM". 3. Press the key to select "OFF"...
Page 90: Stopping Alarm
3.3.14 Stopping Alarm An alarm by characters or buzzer will be generated when any abnormality in input signal or fault in the processing circuit should occur. When an alarm has been generated, information of errors occurred will be displayed in the lower left corner of the screen in turn at intervals of 1 sec.
Page 91: Setting Alarm Sound Level
3.3.15 Setting Alarm Sound Level Alarm sound levels are set as follows: To set alarm sound level 1. Press the key to open the SUB MENU. Procedures Procedures MENU 2. Press the key to open the INIT SET #1 menu. 3.
Page 92: Enhancing Target
3.3.16 Enhancing Target • Expands a target to the display size. • By expanding a target, the visibility of a small target is improved, thereby improving the sensitivity. • However, if a target is expanded, the bearing and distance resolution deteriorate. •...
Page 93: Setting Cross Cursor Length And Fixing Cursor Position
3.3.17 Setting Cross Cursor Length and Fixing Cursor Position This function is used to set the length of the cross cursor or to select the mode for fixing the cursor. To set the length of the cross cursor 1. Press the to open the SUB MENU.
Page 94 To set the cross cursor fixing mode 1. Follow procedures 1 to 3 for setting the cursor length to open the CURSOR Procedures Procedures menu. 2. Press the key to select "FIXED CURSOR". 3. Press the key to select "X/Y AXES", "X AXIS" or "Y AXIS". 4.
Page 95: Displaying Ship's Stern Marker
3.3.18 Displaying Ship's Stern Marker 1. Press the key to open the SUB MENU. Procedures Procedures MENU 2. Press the key to open the RADAR #2 menu. 3. Press the key to select "STERN FLASH". 4. Press the key to select "OFF" or "ON". 5.
Page 96: Setting Range Unit In Km
3.3.19 Setting Range Unit in KM This function is used to switch the range from the own ship to the cursor or the VRM 1/2 range unit to km or The cursor is selected by VRM1. 1. Press the key to open the SUB MENU. Procedures Procedures MENU...
Page 97 3 – 38...
Page 98: Displaying Video Processing Screen
3.3.20 Displaying Video Processing Screen Attention G If you'll watch the RADAR BECON and the SART, Set process as follows PROCESS G If you'll use this function on RM mode, sellect NORTH-UP bearing or COURSE-UP bearing. This function can't be used on RM mode selected HEAD-UP. Unnecessary targets are reduced to enhance the intended target(s).
Page 99 Main menu MAIN MANU 1. RADAR TRACK BRILL [DAY1] 2. RR EBL BRILL [DAY1] 3. ATA BRILL [DAY1] 4. GRAPHIC DATA BRILL [DAY1] 5. PROCESS PROC1 PROC2 PROC3 6. IR 7. FLOATING EBL 8. VECTOR TRUE RELATIVE 9. GRAPHIC DATA DISP OFF 3 –...
Page 100: Zooming Display
3.3.21 Zooming Display This function is used to display the radar video in the double range scale. The available motion modes are HUP, CUP and NUP only in the RM mode. 1. Press the key to open the SUB MENU. Procedures Procedures MENU...
Page 101: Selecting Display Mode [Map]
3.3.22 Selecting Display Mode [MAP] This function is used to select the radar, R+P (radar + plotter) or plotter (optional) mode. Press the key to select the radar, radar + plotter or plotter mode. Procedures Procedures The R+P (radar + plotter) mode cannot be selected unless both GPS and gyro are installed. The available motion modes in R+P mode are NUP and CUP only in the TM/CTM mode.
Page 102: Using Electoronic Plot (Epa)
3.3.23 Using Electronic Plot (EPA) Attention The EPA is used for a radar without the ATA function. It stores and displays the target course and speed in the form of vector. Up to 10 ships (plot No. 0 to 9) can be specified. It also calculates the CPA and TCPA and outputs an alarm.
Page 103: Modifying Plot
3.3.23.2 Modifying Plot Attention This function is used to delete the display of the specified plot. Until the plot is cleared and reacquired, the plot immediately before moved to the position to be cleared is displayed. 1. Press the key. Procedures Procedures DATA...
Page 104: Displaying Plot Numerical Data
3.3.23.4 Displaying Plot Numerical Data Attention The following data is displayed for the specified plot. Plot No: Target No. Elapsed time: In 0.1 minute Target bearing: In 1 degree Distance to target: In 0.01nm Target true course: In 1 degree Target true speed: In 0.1KT CPA:...
Page 105: Plot Symbol
3.3.23.5 Plot Symbol Meanings of Symbols Vector/symbol Meanings Remarks Safety target Dangerous target An alarm character (CPA TCPA) appears. An alarm sounds. The vector and symbol blink in red. Initial acquisition mark Displayed from the first to ten second plotting. Target whose numerical data The target symbol turns to after the...
Page 106: Setting Vector Display
3.3.23.6 Setting Vector Display Attention This function is used to set the plot display mode (true/relative). The default setting is the true vector mode. In the true vector mode, the own ship vector is displayed with a thick line. The vector mode information is always displayed on the scree. MAIN 1.
Page 107: Setting Vector Time
3.3.23.7 Setting Vector Time Attention This function is used to set the vector length. The default setting is 6 minutes. The vector time information is always displayed on the screen. 1. Press the key to open the SUBMENU. Procedures Procedures MENU 2.
Page 108: Displaying
3.3.23.8 Displaying Clearing Plot No. Attention This function is used to select whether the plot No. is displayed or not. The plot No. is not displayed at the default setting. The number is not displayed when "OFF" is selected. 1. Press the key to open the SUB MENU.
Page 109: Setting Cpa
3.3.23.9 Setting CPA TCPA Attention This function is used to set the CPA/TCPA for detecting danger targets. The CPA is set in the range between 0.1 to 9.9nm and the TCPA between 1 and 99 minutes. The default settings are 1.0nm for the CPA and 15 minutes for the TCPA. 1.
Page 110 Danger Target Alarm : CPA TCPA CAUTION Since an error may be included in an alarm according to the plotting status, the operator himself must finally judge whether evacuation is necessary or not. This system displays targets in two levels, safe and danger ships, according to the hazard degree. Since the hazard degree can be checked at a glance on the screen, the operator can easily judge to which target he must pay attention.
Page 111: Turning Alarm Sound On Off
3.3.23.10 Turning Alarm Sound On Attention This function is used to whether to turn the alarm sound on or off against danger targets. The sound is turned on at the default setting. Setting it at "OFF" does not cause the sound to go off although the alarm detecting function remains turned on.
Page 112: Displaying Clearing Cpa Ring
3.3.23.11 Displaying Clearing CPA Ring Attention This function is used to select whether the CPA ring is displayed or not. The ring is displayed at the default setting. In the true vector mode, the CPA ring is not displayed even when this function is set at "ON". 1.
Page 113: Displaying Date And Time
3.3.24 Displaying Date and Time The date and time can be displayed only when the GPS is connected. The date and time can not be displayed when the radar mode is selected. 1. Press the key to open the SUB MENU. Procedures Procedures MENU...
Page 114: Displaying The Plain Radar Screen
3.3.25 Displaying the Plain Radar Screen This system has the functions that the screen using auto/manual suppressing sea clutter or rain clutter and the screen using video processing (for further information, see subsection “3.3.20 Displaying Video Processing Screen”) is more plainer. Each function can be also set individually by following procedures, but these can be called by pressing the FUNC key.
Page 115 Radar video RADAR 0. PREV VIDEO 1. VIDEO LATITUDE NARROW WIDE 2. VIDEO NOISE REJECTION LEVEL1 LEVEL2 3. AUTO DR CONT 4. PROCESS SWITCHING 5. PROC SWITCH RANGE 3.0 NM 3 – 56...
Page 116: Operation Of The Performance Monitor
3.3.26 Operation of the Performance Monitor 1. Press the key to set the radar mode. Procedures Procedures 2. Press the key to open the SUB MENU. MENU 3. Press the key to open the RADAR #3 menu. 4. Press the key to select "PAFORMANCE MONITOR".
Page 117 16 18NM PM pattern P. MON An example of the display of PM pattern Check of the transmission system The value of [P. MON] displayed in the lower right corner of the screen represents the transmission power. If the current values is extremely smaller than the value recorded during the initial check, the transmission system requires inspection by a service engineer.
Page 118 Example : If it is assumed that initial value B is 8.0 and current value A is 6.0, d(B) = 3.5 dB and d(A) = 7 dB can be obtained from calibration curve I. Therefore, d(A) - d(B) is 3.5 dB, which shows that the current transmission power is a result of approx.
Page 119 Check of the receiving system The maximum range of the PM pattern displayed on the screen represents the decrease in sensitivity of the receiving system. Checking procedures: With regard to the PM pattern displayed on the screen, the maximum range rmax from the PPI center using VRM.
Page 120 Example : If it is assumed that the maximum range of the initial PM pattern, rBmax, recorded in the Information Label is 16 NM and the maximum range of the current PM pattern, rAmax, is 14 NM, the value of decrease, r(max) = 5 dB, can be obtained from calibration curve II, which shows that the sensitivity of the receiving system has lowered by approx.
Page 121: Using Function Key [Func]
Using Function Key [Func] 3.4.1 Overview The "Radar function setting" enables users to constantly obtain the optimum radar video by storing the settings of complicated radar signal processing functions in the optimum state for each purpose and calling the required setting according to the use condition. The contents are set when the radar is delivered from the factory according to the general usage condition.
Page 122: Function Setting Items
3.4.3 Function Setting Items See below for the menu structure of the function setting items. Page 1 1. MODE (Select the name to be used) 2. PROCESS PROC1 PROC2 PROC3 3. IR 4. AUTO STC/FTC AUTO STC AUTO FTC 5. TGT EXPANSION EXP1 EXP2 EXP3...
Page 123: Operation Outline Of The Function Setting Items
3.4.4 Operation Outline of the Function Setting Items See below for the operation outline of each function setting item. [Page 1] 1. MODE • Select the name of the function displayed on the top-left corner of the screen when the function mode is selected.
Page 124 [Page 1] 2. PROCESS • Video processing performs correlation processing for each scan. • Video processing suppresses random undesired clutter and displays targets only. • Accurate true bearing signals and speed signals are necessary. • In SRM/TM/CTM mode, high processing precision can be achieved since processing is performed in true motion.
Page 125 [Page 1] 4. AUTO STC/FTC • Detects undesired clutter such as rain/snow clutter and sea clutter and performs suppression processing automatically. • Performs suppression processing automatically according to the condition even if the sea condition or weather condition changes. • However, this is not fully automated processing and the user must adjust the degree of remaining undesired clutter.
Page 126 [Page 1] 5. TARGET (TGT) EXPANSION • Expands a target to the display size. • By expanding a target, the visibility of a small target is improved, thereby improving the sensitivity. • However, if a target is expanded, the bearing and distance resolution deteriorate. •...
Page 127 [Page 2] 1 to 5. PULSE WIDTH • Sets a pulse width to be used for the target in each range. • When the function mode is called, the width is set as the pulse width of the range. • When a pulse width is changed on the operator panel after the function mode is called, the pulse width is changed temporarily.
Page 128 [Page 3] 1. VIDEO LATITUDE • Select the gradation for displaying received signals on a screen. • Use "NORMAL" as the standard condition and select "WIDE" in rainy weather. • In "NARROW" mode, images of a close range are displayed in strong contrast. NORMAL : Setting in the standard use.
Page 129 [Page 3] 3. GAIN OFFSET • Corrects the sensitivity in the state where the function mode is called. • Delicate adjustments of sensitivity are necessary to achieve the optimum sensitivity since the noise level that is displayed changes according to the combination of video processing and radar interference processing.
Page 130 [Page 3] 5. SMALL BUOY DETECTION • In this mode, the signal processing circuit loss is low when small buoy are detected. : Normal signal processing setting. : The radar interference processing circuit is switched to small buoy detection processing. Low loss IR processing ➝...
Page 131 [Page 4] 1. RADAR TRAILS INTERVAL • Specify the radar trail length in minutes. • The specifiable radar trail lengths are "1MIN", "3MIN", "6MIN", "12MIN", "15MIN", "30MIN", "60MIN" and "CONT". • When "CONT" is specified, radar trailing is continued without time control for radar trail length. [Page 4] 2.
Page 132 [Page 4] 4. RADAR TRAILS PROCESS • Select whether video processing is performed for radar signals to create a radar trail. • When radar trails process is set to "ON", a radar trail may not be created due to clutter and noise and a radar trail of the target moving at a high speed may not be created.
Page 133 [Page 5] 1. PROCESS SWITCHING • Set a boundary distance and switch the video processing mode to be used between the inside and outside of the boundary. • Video processing outside of the boundary is set to "PROC3". • Video processing inside of the boundary is set to the video processing mode that is set in the menu. (PROC1 to 3) •...
Page 134: Displaying The Chart
1 over. • The shoreline ROM card made by JRC can't be inserted into card slot with ERC card or C-MAP card. • As the card is inserted into card slot, the surface of the card is upper side.
Page 135: Displaying The Erc Card
• The ERC card can be inserted 2 cards into card slot 1 and 2. • The ERC card can't be inserted into card slot 1 and 2 with JRC card or C-MAP card. • As the card is inserted into card slot, the surface of the card is upper side.
Page 136: Displaying The Jrc Chart
2. Press the key to open the RADAR #4 menu. 3. Press the key to open the JRC CARD menu. 4. Press the key to select "FILL LAND AREA", and press the key to select "OFF" or "ON", and Press the key to confirm the setting.
Page 137: Displaying The Contour Of The Shoreline Rom Card By Jrc
Press the same numeric key ( ) to select color, and press key to confirm the setting. 7. By procedure 4 to 6, the depth of contour of JRC card can be selected 8 patterns. Exit 8. Press the key.
Page 138: Displaying Own Ship Track
Displaying Own Ship Track The own ship track can be displayed only in the R+P (radar + plotter) or plotter mode (option NDB-33). The display is not available in the radar mode. 3.6.1 Changing Track Color [When equipped with the plotter] White, sky, blue, green, yellow, pink and red are available for the track color.
Page 139 Exit 6. Press the key. Exit (or press the key to close the RADAR #4 menu.) MENU Note G If plotter (NDB-33) isn't combined, the OWN TRACK menu will not be opened. You will select "OWN TRK MEM INTERVAL" on the RADAR #4 menu. OWN TRACK TRACK 9.
Page 140: Stopping Track Storing
3.6.3 Stopping Track Storing This operation is stopped track storing. After stopping storing the track, the track remains displayed although is cleared by enhancing or reducing the screen. 1. Press the key to select R+P (radar + plotter) or plotter mode. Procedures 2.
Page 141 OWN TRACK TRACK 9. NEXT 1. DELETE OWN TRACK 2. OWN TRK MEM INTERVAL 3SEC 5SEC 10SEC 30SEC 1MIN 3MIN 5MIN 10MIN 30MIN 60MIN 10NM 3. OWN TRACK MEMORY RADAR #4 RADAR #4 0. PREV 9. NEXT 1. OWN TRK MEM INTERVAL 3SEC 5SEC 10SEC...
Page 142: Deleting Track By Color (Using The [Color] Control)
3.6.4 Deleting Track by Color (Using the [COLOR] Control) Track can be cleared by color. Clearable tracks are limited to those currently displayed on the screen. 1. Press the key to select R+P (radar + plotter) or plotter mode. Procedures Procedures 2.
Page 143 OWN TRACK TRACK 9. NEXT 1. DELETE OWN TRACK 2. OWN TRK MEM INTERVAL 3SEC 5SEC 10SEC 30SEC 1MIN 3MIN 5MIN 10MIN 30MIN 60MIN 10NM 3. OWN TRACK MEMORY RADAR #4 RADAR #4 0. PREV 9. NEXT 1. OWN TRK MEM INTERVAL 3SEC 5SEC 10SEC...
Page 144: Deleting Track By Color (Using Menu)
3.6.5 Deleting Track by Color (Using Menu) The function for clearing tracks by color using menus is available only in the plotter mode. Among the stored tracks, only those in the specified color can be deleted. The intenal memory can be saved by deleting unnecessary tracks by color.
Page 145 DISPLAY DELETE OF TRACK MARK IN DISTINCTION COLOR DISPLAY DELETE OF TRACK MARK IN DISTINCTION COLOR Press an item number key. 0. PREVIOUS MENU 1. DISP OWN TRK COLOR 2. DISP MARK COLOR TYPE p ~ o TYPE COLOR 3. CLEAR OWN TRK COLOR 4.
Page 146: Displaying Or Hiding Track By Color
3.6.6 Displaying or Hiding Track by Color The tracks in your desired color can be displayed or hidden. Even when the tracks in your desired color are displayed, those in other colors are not hidden. Selecting "ALL" displays all tracks irrespective of the colors.
Page 147 DISPLAY DELETE OF TRACK MARK IN DISTINCTION COLOR DISPLAY DELETE OF TRACK MARK IN DISTINCTION COLOR Press an item number key. 0. PREVIOUS MENU 1. DISP OWN TRK COLOR 2. DISP MARK COLOR TYPE p ~ o TYPE COLOR 3. CLEAR OWN TRK COLOR 4.
Page 148: Displaying Navigation Information
Displaying Navigation Information This function enables to create, display, modify, and delete navigation lines, coast lines, contour lines, navigation marks, and so on. This function can be used only in R+P mode and plotter mode (option). 3.7.1 Creating the Navigation Information (Navigation Lines) When creating a navigation line, it is convenient for later references if a destination is created and then making it identifiable by entering the measurement system and the name of navigation information to the comment area for that destination.
Page 149 1. Press the , and keys in this order to open MENU the NAV INFO menu. 2. Press the key to select "SETTING WPT/CANCELLATION WPT". 3. Press the key. The menu will disappear and the destination number will be displayed on the screen. 4.
Page 150 3. Input the latitude of the destination by numeral keys and press the key. (When not changed, press the key alone.) 4. Input the longitude of the destination by numeral keys and press the key. (When not changed, press the key alone.) (Switching of North/Sough Longitude and East/West Latitude is effected by the...
Page 151: Creating The Navigation Information (Coast Lines And Contour Lines)
3.7.2 Creating the Navigation Information (Coast Lines and Contour Lines) To create a coast line or contour line, a line is drawn in the similar manner as for the navigation line. MARK 1. Press the key to select the mark key on the screen and then Procedures Procedures MENU...
Page 152: Creating/Deleting The Navigation Information (Navigation Marks)
3.7.3 Creating/Deleting the Navigation Information (Navigation Marks) Input a navigation mark at an arbitrary position on the radar screen. - White, sky, blue, green, yellow, pink and red are available for the mark color. - The following five shapes are available for the mark shape. - Up to 20,000 marks can be input together with navigation lines.
Page 153 3.7.4 Tuning On or Off Display of Destination Marks, Number and Comments - This function enables to set the display of destination marks to ON and OFF. - This function enables to set the display of the destination number and comments displayed beside each destination mark to ON and OFF.
Page 154 3.7.5 Tuning On or Off Display of Marks and Lines by Specifying Color or Shapes - This function enables to display the marks with the desired color and shape. Further, display can be set to OFF. - If the marks with the desired color and shape are displayed, the marks with other colors and shapes will not be deleted.
Page 155: Deleting A Mark Or Line By Specifying A Color Or Shape
3.7.6 Deleting a Mark or Line by Specifying a Color or Shape This function enables to delete the marks of specific colors and shapes from the marks stored. Unnecessary marks as classified by color and shape can be deleted to save the area in the internal memory. Procedures 1.
Page 156: Displaying Geodetic Datum
3.7.7 Displaying Geodetic Datum When displaying navigation information, check if its geodetic datum is the same as that used by the navigation equipment by referring to the comment at the time when the destination was created. If the geodetic datum does not accord, the navigation information on the radar screen will be displaced, it is important to use the same geodetic datum as that for the navigation equipment.
Page 157: Measurement
MEASUREMENT 4.1 Measurement with Trackball·······························4-1 4.2 Measurement with Fixed Range Rings ··············4-2 4.3 Measurement with Electronic Cursor and Variable Range Marker ································4-3 4.4 Measurement between Two Optional Points of Target ·······························································4-4...
Page 158: Measurement With Trackball
Measurement with Trackball 1. Check the picture of targets on the screen. Procedures Procedures 2. Use the trackball and bring the cursor mark to a target. The range and bearing of the target is displayed on the lower left of the screen. The range is the one from the own ship.
Page 159: Measurement With Fixed Range Rings
Measurement with Fixed Range Rings Press the key. Procedures Procedures The fixed range rings appear. Range is judged from the percentage of target to the fixed range ring spacing. (The fixed range ring spacing is displayed on the upper left of the screen.) 4 –...
Page 160 Measurement with Electronic Cursor and Variable Range Marker EBL1 1. Press the key and select display and motion of EBL1. Procedures Procedures EBL2 (See subsection “3.3.2 Using EBL (Electronic Cursor) [EBL1 EBL2]”.) EBL1 on the lower left is displayed in a box and EBL1 is displayed by a short dashes line on the PPI screen.
Page 161: Measurement Between Two Optional Points Of Target
Measurement between Two Optional Points of Target EBL1 1. Press the key to display EBL1 and to select motion of EBL1. Procedures Procedures EBL2 EBL1 is displayed in a box on the lower left of the screen. 2. Turn the EBL control and bring EBL1 (short dashes line) to Point A. (See Fig.
Page 162: Operations Of Ata (Option)
OPERATIONS OF ATA (OPTION) 5.1 Initialization ··························································5-2 5.2 Display Mode ·······················································5-8 5.3 Target Acquisition ···············································5-9 5.4 Displaying the ATA Data ···································5-11 5.5 Data Reading ······················································5-18 5.6 Alarm Display ·····················································5-20 5.7 Erasing an Unnecessary Target ·······················5-23 5.8 Adjusting Intensity ············································5-24 5.9 Function Check ··················································5-25 5.10 Target Past Track ··············································5-31 5.11 Turning ON and OFF the ATA Display ·············5-40 5.12 Turning On and OFF the Alarm Sound of...
Page 163 CAUTION Target acquisition and tracking function with ATA are limited as follows: [I] Resolution between adjacent targets and swapping during automatic tracking Depending on the particular distance and echo size, resolution between adjacent targets during automatic tracking usually ranges somewhere between 0.03 and 0.05 nm. If multiple targets approach each other, resolution will become about 0.03 nm and this may cause the system to regard them as one target and thus to swap them or lose part of them.
Page 164: Initialization
Initialization This sub-section explains how to initialize ATA before operation. 5.1.1 Setting Collision Judgment Conditions : SAFE LIMIT Attention Values of collision judgment conditions should be properly set according to type of tracking ship, particular waters, weather and sea conditions. (For relations between the judgment conditions and alarms, see section “5.6 Alarm Display”.) Before operation, be sure to set and check collision judgment conditions.
Page 165 [II] Displaying the ring of the CPA (range of safety limit) The CPA ring is displayed only in the relative vector mode. It is not displayed in the true vector mode. (Refer to subsection “5.4.1 Vector Display”.) 1. Press the key to open the SUB MENU.
Page 166 [III] Setting the gate size The gate indicates "the area where the radar computer monitors a target which is being tracked." When the gate size is too large, the target will not be lost, but the target might swap to another adjacent target. When the gate size is set to SMALL, target swap is less likely to occur but there is a risk that the target may not be tracked and therefore be lost.
Page 167 [IV] Activating automatic aquisition Use the guard zone to automatically acquire ship. Attention This function cannot be used simultaneously with the radar alarm function. 1. Press the key to open the RADAR ALARM menu. Procedures MENU 2. Press the key to select "FUNCTION". 3.
Page 168 [V] Setting the guard zone To watch for the invasion of another ship and a target or to automatically acquire another ship which invaded, the guard zone can be set. RADAR ALARM RADAR ALARM 1. FUNCTION ATA ALARM 2. AUDIBLE ATA ALARM 3.
Page 169: Automatically Set Mode (At Activation)
Operation of the guard zone • If there is a target in the fan-shaped area of the guard zone, an alarm is sounded and the mark is displayed on the target. • If the start and end points of the guard zone are within ±3° when creating the guard zone, a circular guard zone is applied.
Page 170: Display Mode
Display Mode 5.2.1 Setting the Motion Display Mode [TM Press the key to set the motion display mode to either true motion display TM or relative motion display RM. However, the mode is set to RM at activation. 5.2.2 Setting the Bearing Display Mode [AZI MODE] Press the key to set the bearing display mode.
Page 171: Target Acquisition
Target Acquisition Attention For automatic acquisition, please adjust the [SEA] or [GAIN] control properly to prevent pickup such as sea clatter as much as possible. For the method for target acquisition of this equipment, automatic and manual modes are available, but both modes can be used at the same time.
Page 172: Manual Acquisition
5.3.2 Manual Acquisition Attention When the target which is being tracked has already reached the maximum number of targets and then is manually acquired, the distant target which is becoming more distant from the own ship at the rear is erased. Align the + cursor mark to the target to be acquired and press the Procedures Procedures...
Page 173: Displaying The Ata Data
Displaying the ATA Data 5.4.1 Vector Display Attention When a target and the own ship were veered or when a new target was acquired, the displayed vector might reach the specified accuracy only when three minutes or more elapsed after acquired or veering. The vector might contain errors according to the state of tracking even after three minutes or more elapsed.
Page 174 True Vector Display In the true vector mode, the direction of the target vector becomes the length proportional to the true speed of the target true course, length target. The vector of the own ship is also displayed as shown in the figure. By using this mode, the motion of ships around the own ship can accurately and easily be grasped.
Page 175 [II] Vector Length The vector length becomes the length proportional to the speed of the target and the length can be switched from 1 to 60 minutes. The example shown in the following diagram shows the case where the vector length is six minutes, and the vector tip becomes the forecast position after six minutes.
Page 176 ATA #1 ATA #1 0. PREV 9. NEXT 1. ATA SYMBOL TAGET DATA 2. VECTOR TIME 5MIN (0-60MIN) 3. PAST POSITION 4. PAST POSITION TIME 30 SEC 1 MIN 2 MIN 4 MIN 5. LIMITS 5. 0NM (0.1-9.9NM) TCPA 15MIN (1-99MIN) 5 –...
Page 177: Past Position Display
5.4.2 Past Position Display Display the position of a target using the key. MENU Up to four past position can be displayed. The track mode displays the true or relative track together with the vector mode. The relative vector mode displays the relative track of a target. The true vector mode displays the true track.
Page 178 Fig. 5.1 shows a display example of the screen and Table 5.2 gives an explanation of the symbols on the screen. Guard zone Lost target Dangerous target Trackball (Cursor mark) Past positions (Changed course) Target not being tracked Safety target Past positions (Straight course) Fig.
Page 179 Table 5.2 Meanings of Symbols Vectors and Symbols Meanings Remarks Safety target Dangerous target An alarm character (CPA/TCPA) appears. An alarm sounds. The vector and symbol blink (in red). Initial acquisition mark After the acquisition, this mark is displayed until the vector is displayed. Target whose data readouts have When the data reading target is been displayed.
Page 180: Data Reading
Data Reading Attention When a target under tracking or the own ship steers away from the course, or when the radar acquires a new target, its vector may not reach the required accuracy until 3 minutes passes after the acquisition or the change of course.
Page 181: Displaying Method Of Numerical Data Readouts [Tgt Data]
5.5.2 Displaying Method of Numerical Data Readouts [TGT DATA] 1. Press the key. Procedures Procedures DATA 2. Operate the track ball to align the + cursor mark to the target that is to be numerically displayed (target that is being tracked at present) and press key.
Page 182: Alarm Display
Alarm Display The following alarms are available on the ATA system: Dangerous target alarm (CPA TCPA) Guard zone entry alarm (GZ) Lost target alarm (LOST) 5.6.1 Dangerous Target Alarm : CPA TCPA CAUTION Since the alarm may include some errors depending on target tracking situations, the operator should make the final decision for maneuvering the ship by himself.
Page 183: Guard Zone Alarm
5.6.2 Guard Zone Alarm Attention It is very important that, when guard zone is set, the radar tuning gain, sea clutter suppression and rain/snow clutter suppression should be adjusted so that optimum pictures of targets can be displayed on the screen. The guard zone alarm does not occur against targets which the radar does not detect. The guard zone function sets a ring at a certain distance and issues an alarm when the target was invaded into this ring.
Page 184: Lost Target Alarm
5.6.3 Lost Target Alarm Attention Unless radar tuning, gain sea clutter suppression, rain/snow clutter suppression, etc. have been properly adjusted, the lost target alarm is apt to occur. The LOST TARGET ALARM will occur when a target acquired and having been tracked comes not to be tracked any more for some reason.
Page 185: Erasing An Unnecessary Target
Erasing an Unnecessary Target When the target on which the vector and symbol are displayed needs not to be tracked or when the number of vectors is reduced from the screen to easily see the target, an unnecessary target can be erased one by one. When acquition is resumed from the beginning for all target, all target can also be erased.
Page 186: Adjusting Intensity
Adjusting Intensity MAIN 1. Press the key. Procedures Procedures MENU 2. Press the key to select "ATA BRILL". 3. Whenever the key is pressed, the intensity is increased at four stages as shown in the following stages. These preset types of intensity are stored according to the DAY NIGHT mode.
Page 187: Function Check
Function Check 5.9.1 Vector Constant Setting (ATA) Do not change the set point carelessly. Attention The vector constant is generally set to 7. If the constant is set to a larger value, target vectors can be followed up easily when targets or the own ship change(s) their or its course or speed. On the contrary, the vector accuracy is degraded.
Page 188: Video Level Setting
5.9.2 Video Level Setting Do not change the set point carelessly. Attention The video level is for deciding the minimum input signal level for the ATA’s target detection circuit. The video level can be set to the range from 1 to 63. Unless the level is set to a proper value, the acquiring and tracking functions of ATA will be degraded.
Page 189 Determining the setting value Set the range to 3 to 6 miles and increase the video level watching the test video on the screen. Then check the video level in which the test video (VDG) is not issued due to noise.
Page 190 Setting the video HIGH level The video HIGH level is a signal level used for tracking a target in the near distance. As the setting value is smaller, the target with a weaker signal becomes easy to track, but if it is too small, the sea clutter return and the like are tracked.
Page 191: Checking The Ata Operation
5.9.3 Checking the ATA Operation ATA test video For the target which is being acquired or tracked, it can be inspected that video signals are normally input to the target detection circuit and processed. 1. Set RANGE: 3 NM Procedures Procedures TUNE: Optimum...
Page 192 ATA TEST ATA TEST 0. PREV 1. TEST VIDEO 2. VECTOR CONST 3. VIDEO TD LEVEL 4. VIDEO HIGH LEVEL 5. VIDEO LOW LEVEL 6. GATE SIZE NORMAL SMALL 7. ATA NOISE LEVEL 8. ATA FTC LEVEL 5 – 30...
Page 193: Target Past Track
5.10 Target Past Track Target past track function cannot be used in the radar mode. Use it in the composite mode (a plotter option is required.) Setting the composite mode When pressing the key, the mode sequentially changes into the radar Procedures Procedures mode, composite mode (R+P), and plotter mode (the NDB-33 plotter option...
Page 194: Specifying Target Past Track
5.10 ATA TRACK ATA TRACK 0. PREV 9. NEXT 1. TRACK FUNCTION 2. TRACK COLOR OTHER WHT SKY RED WHT WHT WHT WHT 4. TRK DISPLAY OTHER 5. TRK MEM INTERVAL 10SEC 30SEC 1MIN 3MIN 5MIN 10MIN 5.10.2 Specifying Target Past Track Attention This setting is valid when target past track function is ON.
Page 195: Setting Target Past Track Color
5.10 5.10.3 Setting Target Past Track Color Attention This setting is valid when target past track function is ON. Seven colors (white, sky, blue, green, yellow, pink, and red) are used to specify individual target past tracks (duplicate colors allowed). If all colors are specified, the color that is individually set to target past track numbers 0 to 9 is invalidated.
Page 196: Setting Target Past Track Display
5.10 5.10.4 Setting Target Past Track Display Attention This setting is valid when target past track function is ON. This function continues storing target past track irrespective of this setting. It sets the display non-display of target past track (up to 10 target) with the specified target past track number.
Page 197: Setting The Storage Interval
5.10 5.10.5 Setting the Storage Interval Attention This setting is valid when target past track function is ON. Setting this function to OFF does not store target past track. In this case, the display of target past track is continued until the screen is rewritten by changing the range, etc. 1.
Page 198: Erasing The Storage Of Target Past Track By Specifying A Color
5.10 5.10.6 Erasing the Storage of Target Past Track by Specifying a Color Attention This setting is valid when target past track function is ON. This function erases the storage of target past track with the specified target past track color. The erased target past track is not reproduced.
Page 199: Erasing The Storage Of Target Past Track By Specifying A Number
5.10 5.10.7 Erasing the Storage of Target Past Track by Specifying a Number Attention This setting is valid when target past track function is ON. This function erases the storage of target past track with the specified target past track number. The erased target past track is not reproduced.
Page 200 5.10 5.10.8 Reading Taget Past Track from Card 2 Attention This setting is valid when target past track function is ON and is set in the composite mode and plotter mode. 1. Press the key to open the SUB MENU. Procedures MENU 2.
Page 201: Writing Target Past Track To Card 2
5.10 5.10.9 Writing Target Past Track to Card 2 Attention This setting is valid when target past track function is ON and is set in the composite mode and plotter mode. Write target past track by entering 4-digit file number that is not stored on the memory card. 1.
Page 202: Turning On And Off The Ata Display
5.11 Turning ON and OFF the ATA Display For the target which is acquired or tracked, this function sets the display non-display of the ATA symbol and numeric data. 1. Press the key to open the SUB MENU. Procedures MENU 2.
Page 203: Turning On And Off The Alarm Sound Of Dangerous And Lost Targets
Turning On and OFF the Alarm Sound of 5.12 Dangerous and Lost Targets When the target which is acquired or tracked was changed to a dangerous target or when the target failed in tracking and was lost, this function sets the ON OFF of an alarm sound to be generated.
Page 204: Simulation
Simulation 5.13 (Checking the ATA according to a Pseudo Target) To check the ATA, this function displays a pseudo target on the screen. 1. Set GAIN to the minimum. Procedures 2. Press the key to open the SUB MENU. MENU 3.
Page 205: True And False Echoes On Display
TRUE AND FALSE ECHOES ON DISPLAY 6.1 Radar Line-of-sight Range ··································6-1 6.2 Strength of Reflection from Target ····················6-3 6.3 Sea Clutters ··························································6-3 6.4 False Echoes ························································6-3 6.5 Display of Radar Transponder ···························6-6...
Page 206: Radar Line-Of-Sight Range
The role of the radar operator is to analyze pictures on the screen and to help maneuvering the ship as much as possible. For the purposes, the operator have to fully understand the merits and demerits of the radar before observing the screen.
Page 207 h2(m) h1(m) D (nm) Height of radar scanner Line-of-sight range Height of target Fig. 6.2 When the height of own ship’s antenna is 10m, for example, a) When the radar line-of-sight range is 64nm, the height of a target to be observed on the radar screen have to be 660m or more.
Page 208: Strength Of Reflection From Target
6.2 ~ 6.4 Strength of Reflection from Target The strength of target echo returns depends on component materials and shape of the target as well as height and size of the target, and the echo returns from a high and large target is not always strong in general. In particular, coastal lines on the screen are affected by land forms, and, when a low land coastal line continues, only inland mountain echo returns are displayed on the screen.
Page 209 [II] Influence of Side Lobe An ark with an broken line may appear in the same distance as the video by the scanner beam main lobe. Such false echo is relatively easier to be detected when the target is isolated (see Fig. 6.4). Fig.
Page 210 [V] Anomalous Propagation The maximum radar range depends on the heights of the antenna and target as explained in section “6.1 Radar Line-of-sight Range”. If duct occurs on the sea surface in certain atmospheric conditions, however, a transmitted beam of enery will be abnormally propagated and targets far away from the own ship may be detected.
Page 211: Display Of Radar Transponder
Display of Radar Transponder SART (Search and Radar Transponder) is life preserving device approved by GMDSS which is used for locating survivors in the event of a disaster or distress. SART operates in the 9GHz frequency band. When it receives a radar signal (interrogating radio wave) of 9GHz transmitted by a rescue ship or aircraft radar, SART transmits a series of respouse signals to the searchers to indicate the distress position.
Page 212: Maintenance
MAINTENANCE 7.1 Routine Maintenance···········································7-1 7.2 Maintenance of Each Unit ···································7-2...
Page 213: Routine Maintenance
Routine Maintenance CAUTION Internal inspection and maintenance must be conducted by our special maintenance personnel, otherwise fire or an electric shock may occur. Ask our sales department, nearest office or your local distributor for internal inspection and maintenance. Be sure to turn the main power source off before maintenance, otherwise an electric shock may occur.
Page 214: Maintenance Of Each Unit
Maintenance of Each Unit 7.2.1 Scanner unit NKE-1055 1056 WARNING Before starting maintenance of the scanner unit, be sure to turn off the main power source, otherwise you may get an electric shock or be injured. Be sure to set the safety switch for stopping the scanner unit to "OFF", otherwise you may be injured.
Page 215 Safety switch Fig. 7.1 NKE-1055 Scanner unit (Rear) Safety switch Fig. 7.2 NKE-1056 Scanner unit (Rear) 7 – 3...
Page 216: Display Unit Ncd-3901-2
Notch (replace it when it has worn to this point Contact surface with commutator Carbon brush Spring Fig. 7.3 Carbon Brush 7.2.2 Display Unit NCD-3901-2 Cleaning of CRT Surface Dusts accumulated on the CRT surface will reduce clarity and darken pictures. For cleaning, wipe it with a soft cloth (flannel or cotton) wetted with water.
Page 217: Countermeasures For Trouble
COUNTERMEASURES FOR TROUBLE ADJUSTMENT 8.1 Function Check ····················································8-1 8.2 Failure Check ·······················································8-8 8.3 Troubleshooting ················································8-10 8.4 Replacement of Major Parts ·····························8-14 8.5 Adjustment and Setting ····································8-19...
Page 218: Function Check
Function Check 8.1.1 Function Check Regularly check the radar and whenever abnormalities being found, investigate the cause of trouble. In checking, pay special attention to the high voltage circuits and take care not to cause any trouble by error or carelessness during the measurement.
Page 219: Memory Test
8.1.2.1 Memory Test This test is used to check the operating status of the built-in memory. 1. Press the key. Procedures MENU 2. Press the key four times to open the INIT SET #4 menu. 3. Press the key to open the DIAGNOSTIC 2 menu. 4.
Page 220: Key Switch Test
8.1.2.2 Key Switch Test This test is used to check the operating status of each knob/switch. 1. Follow procedures 1 to 3 in subsection 8.1.2.1. Procedures Procedures The DIAGNOSTIC 2 menu appears. 2. Press the key to open the KEY SWITCH TEST menu. 3.
Page 221: Sensor Test
8.1.2.3 Sensor Test This test is used to check signals from the scanner unit. 1. Follow procedures 1 to 2 in subsection 8.1.2.1. Procedures Procedures 2. Press the key to open the DIAGNOSTIC 1 menu. 3. Press the key to open the SENSOR TEST menu. "OK"...
Page 222: Ata Status
8.1.2.5 ATA Status This test is used to check the acquiring status of the ATA. The display is available only when the ATA (NCA-843) is used. 1. Follow procedures 1 to 2 in subsection 8.1.2.3. Procedures The DIAGNOSTIC 1 menu appears. 2.
Page 223: Error Logging
8.1.2.7 Error Logging This test is used to display the history of the errors occurred. 1. Follow procedures 1 to 2 in subsection 8.1.2.3. Procedures The DIAGNOSTIC 1 menu appears. 2. Press the key to open the ERROR LOGGING. Refer to subsection “3.3.14 Stopping Alarm” for the contents of error information. Exit 3.
Page 224: Magnetron Current, Running And Transmission Time
8.1.2.8 Magnetron Current, Running and Transmission Time This test is used to check the magnetron current by displaying the magnetron current bar. 1. Follow procedures 1 to 2 in subsection 8.1.2.3. Procedures Procedures The DIAGNOSTIC 1 menu appears. The magnetron current bar, the totals of the running and transmission times are displayed.
Page 225: Failure Check
Failure Check For semiconductor circuits, most troubles are considered to hardly occur without improper design, insufficient inspection, other external or artificial factors. Causes of most troubles are disconnection of high value resistor by humidity, defective variable resistor and imperfect contacts of buttons and relays. Since troubles may also be caused by defective parts, improper adjustment (mostly improper adjustment of the tuning) and insufficient service (mostly imperfect contact of cable), further inspections and adjustments will be effective by taking the above into account (refer to Table 8.2 Failure Check List).
Page 226 Table 8.2 (Continued) Failure status Probable cause a. Monitor failure or adjustment error. Distorted display b. The horizontal (HS) or vertical (VS) synchronous signal is fused. c. CPU control circuit PCB (PC4401) failure. a. The marker brilliance is adjusted to the lowest. No display appears even after pressing the fixed or (See section “3.2 Preparation”)
Page 227: Troubleshooting
Troubleshooting 8.3.1 Troubleshooting for the Radar When this radar has gotten out of order, ask our sales department or your local distributor for repair. Refer the following failure causes when inspection or repairing the radar. 1. Imperfect contact of cables between equipment at terminal boards a) Imperfect contact at terminal board b) Improper cable terminal treatment - Earth or contact with other terminal.
Page 228 Table 8.5 Special Parts Parts No. Parts Name Type Maker Location Code V201 (10 kW) Magnetron MSF1425B New JRC Scanner unit 5VMAA00051 V201 (25 kW) Magnetron M1437 (A) New JRC Scanner unit 5VMAA00074 A101 Circulator FCX68 Toshiba Scanner unit 5AJAA00004...
Page 229 8.3.2 ATA Troubleshooting When the operation of this equipment is incorrect, check the operation based on the following items. Since the cause and action are described every item, follow the instruction. Nevertheless, if an incorrect operation is not restored or when incorrect locations are detected in the items other than the following items, contact our agency or your nearer branch office, branch shop, sales office, and own office of our company.
Page 230 Symptom Cause and action The guard zone cannot be set CAUSE In "FUNCTION" on the RADAR ALARM menu, "ATA ALARM" is not selected. (ACTION) In "FUNCTION" on the RADAR ALARM menu, select "ATA ALARM". CAUSE Faulty (ACTION) Contact the sales company. Dangerous ship and lost CAUSE On the ATA #2 menu, "CPA/TCPA"...
Page 231: Replacement Of Major Parts
Replacement of Major Parts WARNING Before replacing parts, be sure to turn off the main power supply, otherwise you will get an electric shock and replaced parts will get out of order. Before replacing the magnetron, discharge the high voltage circuit, otherwise you will get an electric shock.
Page 232 Fig. 8.1 Internal View of 10kW Scanner Unit NKE-1055 Fig. 8.2 Transmitter Unit of 10kW Scanner Unit NKE-1055 8 – 15...
Page 233 Fig. 8.3 Internal View of Sender of 10kW Scanner Unit NKE-1055 Fig. 8.4 Pulse Transformer of 10kW Scanner Unit NKE-1055 8 – 16...
Page 234 [Replacement of Magnetron V201 (25kW : NKE-1056)] Replace the magnetron as follows: (1) Loosen the four A screws from the cover on the left side (when the scanner unit is viewed from the cable ground) to remove the cover (see Fig. 8.5). (2) Remove the three modulator cover B screws and loosen the seven C screws to remove the cover (see Fig.
Page 235 Fig. 8.6 Internal View of Modulator of 25kW Scanner Unit NKE-1056 Fig. 8.7 Internal View of Modulator of 25kW Scanner Unit NKE-1056 [Replacement of Diode Limiter (A102)] Remove the four screws fixing both the receiver and the PIN attenuator. Remove the four screws fixing the diode limiter and another four screws fixing both the diode limiter and the PIN attenuator to take off the diode limiter.
Page 236: Adjustment And Setting
Adjustment and Setting Although each component of the radar has completely been adjusted in the factory, the adjustments as described in subsection 8.5.1 to 8.5.3 are required after installation. 8.5.1 NSK Unit Adjustment The NSK unit of the radar can be applied to almost all types of gyrocompasses just by changing the settings of keys (step motor type of 24VDC to 100VDC and synchro motor type with primary exciting voltages of 50VAC to 115VAC).
Page 237 S5-4 : Gyro direction Normal (clockwise) ······················· [OFF] Reverse (counterclockwise) ·········· [ON] S5-5 : Log type Pulse signal ··································· [OFF] Synchronizing signal ····················· [ON] S5-6 : Not used S5-7, -8 : Log ratio Pulses/nm (Pulse signal) Rotations/nm (Synchro signal) 360X 180X S5-7 S5-8...
Page 238 Table 8.7 Gyro Log Selection Switches (DIP switch S5) SYNC STEP 360X 180X Normal (NOR) Gyrational direction (DIRECTION) Reverse (REV) PULSE Type SYNCRO 800P/360X Pulse number 400P/180X (PULSES/NM) 200P/90X 100P/30X 8 – 21...
Page 239: Adjustment And Setting At Installation
8.5.2 Adjustment and Setting at Installation 8.5.2.1 Adjusting Tuning 1. Set the range at 24nm or more to adjust the [TUNE] control at the center. Procedures 2. Press the key to open the SUB MENU. MENU 3. Press the key twice to open the INIT SET #2 menu. 4.
Page 240: Adjusting Bearing
8.5.2.2 Adjusting Bearing Adjust the system so that the target measured by the ship compass corresponds to the bearing of the video displayed on the radar PPI screen. 1. Press the key to select the HUP display. Procedures MODE 2. Measure the bearing of an appropriate target (e.g. stationary ship, break water, buoy) against the bow using the ship compass (a target at 25°...
Page 241: Adjusting Range
8.5.2.3 Adjusting Range Adjust the range of the target on the screen so that it is properly displayed. 1. Find a target whose range is known on the PPI screen. Procedures Procedures 2. Press the key to open the SUB MENU. MENU 3.
Page 242: Setting Antenna Height
8.5.2.4 Setting Antenna Height Adjust by the radar scanner unit height. Be careful to select scanner unit antenna height as the selection affects the effect of STC control. 1. Press the key to open the SUB MENU. Procedures MENU 2. Press the key four times to open the INIT SET #4 menu.
Page 243: Various Setting
8.5.3 Various Setting 8.5.3.1 Setting Own Ship Speed Equipment This function is used to select the equipment for inputting the own ship course. The selection should be made in accoradance with section “3.2 Preparation”. 1. Press the key to open the SUB MENU. Procedures MENU 2.
Page 244: Setting True Bearing
8.5.3.2 Setting True Bearing This function is used to set the system so that the master gyro indication corresponds to that of the radar. You don't need to set that again after power on unless you turn off the power of the master gyro once you set that, because the inner electronic circuit is supplied the power from the gyro.
Page 245: Setting Ship Speed
Setting the true bearing using system When you adjust true bearing using system, press the key for 2 seconds. The number entering MODE window for gyro setting appear on the bottom of screen. RANGE RANGE At this time, press the plus (+) side of the key or minus (-) side of the key according to the bearing of the compass, and press the...
Page 246: Setting Drift
8.5.3.4 Setting Drift This function is used to manually set the drift. 1. Press the key to open the SUB MENU. Procedures MENU 2. Press the key to open the INIT SET #1 menu. 3. Press the key to select "DRIFT". 4.
Page 247: Setting Prf
8.5.3.5 Setting PRF This function is used to change the repetition frequency to reduce mutual interference. Whenever the radar interference is not disappeared on the screen by using IR function (subsection “3.2.9 Rejecting Radar Interference”), set PRF according with this section. 1.
Page 248: Setting Transmission Repetition Frequency
8.5.3.6 Setting Transmission Repetition Frequency • Select one of three transmission repetition frequency types. • The transmission repetition frequency relates to the sensitivity and power consumption (life span of magnetron). • When the transmission repetition frequency is high, the sensitivity improves, however, the power consumption also increases, reducing the life span of the magnetron.
Page 249: Connecting Navigation Equipment
INIT SET #2 menu. 3. Press the key to select "DATA INPUT FORMAT". 4. Press the key several times to select either "183", "JRC" or "180". 5. Press the key to confirm the setting. Exit Exit 6.
Page 250 Talker Identifier Mnemonics Talker device Identifier Autopilot: general magnetic Communication: digital selective calling (DSC) data receiver satelite radio-telephone (MF/HF) radio-telephone (VHF) scanning receiver DECCA navigator Direction finder Electronic chart display and information system (ECDIS) Emergency position indicating radio beacon (EPIRB) Engine room monitoring systems Global positioning system (GPS) Heading sensor:...
Page 251: Adjustment Of The Performance Monitor Operation
8.5.3.8 Adjustment of the Performance Monitor Operation 1. Press the key to set the Radar Mode. Procedures Procedures VRM1 2. Press the key to display VRM1 and set the range of VRM1 to 18 NM. VRM2 3. Press the key to open the SUB MENU. MENU 4.
Page 252: Gps Initial Setting Receiving Status
8.5.4 GPS Initial Setting Receiving Status 8.5.4.1 GPS Initial Setting Set the GPS receiver at the default values. Although GPS receiver starts measuring without setting the default values, it may take more than 10 minutes to start receiving after installation. •...
Page 253 8. Press the key to transmit the settings to the sensor. • After transmission the display for indicating that transmission is completed appears. • If transmission fails, the display for indicating that transmission error occurs appears. In this case, check the sensor and cales. Exit 9.
Page 254 Geodetic System List 00 = WGS-84 01 = WGS-72 02 = Japan 03 = North American 1927 (U.S.) 04 = North American 1927 (Canada & Alaska) 05 = European 1950 (Europe) 06 = Australian geodetic 1966 (Australia) 07 = Ordnance Survey of Great Britain (England) 08 = NAD-83 11 = ADINDAN (Ethiopia &...
Page 255 40 = PROVISIONAL SOUTH CHILEAN 1963 (Southern Chile) 41 = PUERTO RICO (Puerto Rico and Virgin Islands) 42 = QORNOQ (South Greenland) 43 = RT90 (Sweden) 44 = SANTA BRAZ (Sao Maguel, santa Maria Islands) 45 = SOUTH AMERICAN 1969 (South American) 46 = SOUTHWEST BASE (Faial, Graciosa, Pico, Sao Jorge and Terceira Island) 47 = TIMBALAI 1948 (Brunei and East malaysia) 8 –...
Page 256: Checking Gps Receiving Status
8.5.4.2 Checking GPS Receiving Status Check the GPS receiving status. • Item Own ship position: Displays the longitude and latitude of the own ship after measurement. Built-in GPS time: Displays the universal time measured by the GPS receiver. Elevation: Displays the elevation of the own ship. When "2D" is selected for the fixed mode, however, the antenna height input as the default is displayed.
Page 257 Initializing GPS GPS status INITIALIZE GPS / GPS STATUS Press an item number key. 0. PREVIOUS MENU 1. POSITION N xx° xx. xxx' Exxx° xx. xxx' 2. EXCLUSION SAT 3. GEODETIC (xxxxxxxxxxx) 4. ANTENNA HEIGHT xxx M 5. FIX MODE AUTO 6.
Page 258: Setting Dgps
8.5.5 Setting DGPS Checking DGPS Receiving Status 8.5.5.1 Setting DGPS Setting the beacon receiver is required for accurate measurement using the DGPS. • Setting Mode: Manual = Set the frequency and baud rate of the beacon receiver. This mode enables quick DGPS receiving.
Page 259 9. Press the key to wait to send data. 10. Press the key to send data. After the setting is properly transmitted to the beacon receiver, the display for indicating that transmission is completed appears. If transmission fails, the display for indicating that transmission error occurs appears. In this case, check the beacon receiver and cables.
Page 260 8.5.5.2 Checking DGPS Receiving Status Checking the DGPS receiving status. When no beacon receiver is connected, or receiver or cable failure occurs, the message "BEACON RCV NONCONNECT" appears. • Items Frequency: Displays the frequency of the beacon station currently received. Baud rate: Displays the baud rate of the beacon station currently received.
Page 261: Maintenance Menu
8.5.6 Maintenance Menu The maintenance menu is used only by our service personnel during installation. Users are requested not to change the setting (bold faced items). Maintenance Menu MAINTENANCE MENU Press an item number key. 0. PREVIOUS MENU 1. ANTENNA HEIGHT UP to 5M 5–10M 10–20M...
Page 262: Partial Master Reset
8.5.6.2 Partial Master Reset This function is used to set the same settings as on shipment. Since the contents set by the user are cleared, only our service personnel is allowed to use this function. 1. Follow procedures 1 to 3 in subsection 8.5.6.1 to open the MAINTENANCE Procedures Procedures MENU.
Page 263: Internal Setting To Card 2
Maintenance Menu MAINTENANCE MENU Press an item number key. 0. PREVIOUS MENU 1. ANTENNA HEIGHT UP to 5M 5–10M 10–20M MORE 20M 3. ANTENNA SWITCH TRANSFER DISCARD 4. PARTIAL MASTER RESET 5. ALL MASTER RESET 6. INTERNAL SETTING to CARD 2 7.
Page 264: User Memory
8.5.6.6 User Memory This function is used to write the contents currently displayed into the internal memory. The written contents are not cleared by master resetting. 1. Follow procedures 1 to 3 in subsection 8.5.6.1 to open the MAINTENANCE Procedures Procedures MENU.
Page 265 Maintenance Menu MAINTENANCE MENU Press an item number key. 0. PREVIOUS MENU 1. ANTENNA HEIGHT UP to 5M 5–10M 10–20M MORE 20M 3. ANTENNA SWITCH TRANSFER DISCARD 4. PARTIAL MASTER RESET 5. ALL MASTER RESET 6. INTERNAL SETTING to CARD 2 7.
Page 266: Adjusting Position To Chart
8.5.7 Adjusting Position to Chart Adjust the position on the video if it does not correspond to that on the chart in the R+P or plotter (optional:NDB-33) mode. 8.5.7.1 Adjusting Video and Chart Using Trackball (R+P Mode) 1. Press the key to open the SUB MENU.
Page 267: Adjusting Video And Chart Position By Entering Adjustment Value (R+P And Plotter Modes)
8.5.7.2 Adjusting Video and Chart Position by Entering Adjustment Value (R+P and Plotter Modes) 1. Follow procedures 1 and 2 in subsection 8.5.7.1 to open the INIT SET #3 Procedures menu. 2. Press the key to select "SHIFT COAST LINE #2". 3.
Page 268: Adjusting Position By Changing Latitude
8.5.7.3 Adjusting Position by Changing Latitude Longitude Information from GPS (R+P and Plotter Modes) Since this adjustment changes such data as the stored track, only our service personnel is allowed to use this function. 1. Follow procedures 1 and 2 in subsection 8.5.7.1 to open the INIT SET #3 Procedures menu.
Page 269: Adjusting Position By Fixing Own Ship At Screen Center
8.5.7.4 Adjusting Position by Fixing Own Ship at Screen Center 1. Follow procedures 1 and 2 in subsection 8.5.7.1 to open the INIT SET #3 Procedures Procedures menu. 2. Press the key to select "CHART CENTER POSITION". 3. Press the key or key, enter an center position value for N (north latitude)/S (South latitude) using numeric keys (...
Page 270: After-Sales Service
AFTER-SALES SERVICE...
Page 271 If the failure occurred under proper operation in accordance with the instruction manual, the dealer or JRC shall repair the product without charging. In case of any other failure occurred due to mis- operation or natural disaster, the repair work will be charged.
Page 272 Radar Failure Checklist When ordering for repair, check the following items, fill in the sheet and send it to us. If there is any uncertain items, contact your ship and give us correct information on the product. Ship name:____________________ Phone:____________________ Fax:____________________ Radar general model name: JMA-____________________ Serial No.:____________________...
Page 273: Disposal
DISPOSAL 10.1 Equipment Disposal ··········································10-1 10.2 Disposal of Used Batteries ·······························10-2 10.3 Disposal of Used Magnetron ····························10-3...
Page 274: Equipment Disposal
10.1 Equipment Disposal Dispose of this equipment by following the ordinances or regulations of the local authorities in charge of the disposal site. 10 – 1...
Page 275: Disposal Of Used Batteries
10.2 Disposal of Used Batteries WARNING Before disposing of used lithium batteries, insulate by affixing tape to the positive and negative terminals or by other means. Otherwise, short-circuiting may occur, resulting in heat generation, bursting or ignition. On this equipment, lithium batteries is used for: BT1 in the CPU control circuit (PC4401) (Maxell ER3) Checking and Replacing the Battery •...
Page 276: Disposal Of Used Magnetron
10.3 Disposal of Used Magnetron The scanner in this radar use a magnetron (NKE-1055 1056). G After replacing it, return the used one to your local distributor or our sales office. For detail, ask your local distributor or our sales office. 10 –...
Page 277: Specification
SPECIFICATION 11.1 General Specification JMA-7710-6 JMA-7725-6 JMA-7725-9 ································11-1 11.2 Scanner Unit NKE-1055-6 ·································11-2 11.3 Scanner Unit NKE-1056-6M 9M ····················11-3 11.4 Display Unit NCD-3901-2 ···································11-4 11.5 ATA NCA-843 (Optional) ···································11-7 11.6 Inputable Signal ·················································11-7 11.7 Outputable Signal ··············································11-8 11.8 Standard Equipment Configuration ·················11-8 11.9...
Page 278: Jma-7725-9
Specification 11.1 General Specification JMA-7710-6 JMA7725-6 JMA-7725-9 Type of emission: Display type: Raster scan, PPI method, vertically long display Display panel: Bright 21-inch color CRT (radar video effective diameter of 250mm min.) Range scales: 0.125, 0.25, 0.5, 0.75, 1.5, 3, 6 , 12, 24, 32, 48, and 96...
Page 279: Scanner Unit Nke-1055-6
11.2 Scanner Unit NKE-1055-6 Approx. height 440 × approx. swing circle 1910 (mm) Outside dimensions: Mass: Approx. 36kg Plane of polarization: Horizontal polarization Beam width: Horizontal beam width = 1.2 degrees Vertical beam width = 25 degrees Side lobe level Within ±10 degrees = –26dB max.
Page 280: Scanner Unit Nke-1056-6M
11.3 Scanner Unit NKE-1056-6M Approx. height 519 × approx. swing circle 1910 (mm) (6ft) Outside dimensions: Approx. height 519 × approx. swing circle 2836 (mm) (9ft) Mass: Approx. 42kg (6ft) Approx. 47kg (9ft) Plane of polarization: Horizontal polarization Beam width: Horizontal beam width = 1.2 degrees (6ft) Horizontal beam width = 0.8 degrees (9ft) Vertical beam width...
Page 281: Display Unit Ncd-3901-2
11.4 Display Unit NCD-3901-2 Structure: Desktop type Approx. W400 × H658 × D795 (mm) Outside dimensions: (However, the dimension of the handle is excluded from the width.) Mass: Approx. 63 kg. Display: Vertical 21-inch color CRT 1024 × 768 Number of pixels: Approx.
Page 282 Screen display mode: Radar mode North-up (TM/RM/SRM/CTM), course-up (TM/RM/SRM/ CTM), head-up (RM/SRM) and stabilized course-up (CTM) Composite mode North-up (TM/CTM) and course-up (TM/CTM) Plotter mode (when optional NDB-33 is installed) North-up (TM) and course-up (TM) 10) Variable range scale: 2 (digital display) Range display unit: nm and km 0.000 to 295.0nm (0.000 to 547.0km) 11) Electronic cursor:...
Page 283 27) Operating positions (1) By controls (1) Tuning control: TUNE (2) Snow/rain clutter restraining control: RAIN (3) Sea clutter restraining control: (4) Gain adjusting control: GAIN (5) Brilliance: BRILL (6) VRM: (7) EBL: (8) VRM: (2) By switch (1) Power supply switch: (3) By keys (1) Main menu key: MAIN MENU...
Page 284: Ata Nca-843 (Optional)
10 seconds, 30 seconds, 1 minute, 3 minutes, 5 minutes, 10 minutes 11.6 Inputable Signal Navigation system Equipment capable of outputting NMEA0182/NMEA0183 (GLL, GGA, VTG, RMB and RMC) or JRC-format signals. Gyro SYNC/PULSE: 360X, 180X, 90X and 36X 11 – 7...
Page 285: Outputable Signal
SYNCHRO: 360X, 180X, 90X and 36X PULSE: 800, 400, 200, 100 2-axis log NMEA0183 (VBW) (incompatible with electronic compass) External event mark Key input Radar buoy 11.7 Outputable Signal External alarm Sub display unit signal (radar adaptor and operation analyzer) Remote monitor (using vertical multi-scan monitor) (CFQ-8914 connector option) 11.8 Standard Equipment Configuration...
Page 286 APPENDIX Appendix 1 Radar System Circuit Code List Appendix 2 Circuit Diagram of Radar Type JMA-7710-6 and JMA-7725-6 Appendix 3 Terminal Board Connection Diagram of Radar Type JMA-7710-6 Appendix 4 Terminal Board Connection Diagram of Radar Type JMA-7725-6 Appendix 5...
Page 287 Appendix Appendix 1: Radar System Circuit Code List General code JMA-7710-6: 10kW, 2 units, 6-feet scanner JMA-7725-6: 25kW, 2 units, 6-feet scanner JMA-7725-9: 25kW, 2 units, 9-feet scanner Scanner unit NKE-1055 (10kW) NMA-469A: Modulator NRG-210A: Receiver NAX-16A-6: Radiator CQD-1547: Internal equipment of scanner...
Page 288 APPENDIX Appendix 1 (continued) Display unit NCD-3901-2 CML-576: Internal circuit of display unit CFQ-8945: Mother board circuit PC4101 CMJ-304C: NSK circuit PC4201 CQD-1651: Terminal board circuit PC4301 CMC-1055B: CPU control circuit PC4401 CED-44B: Time base circuit PC4402 CCK-816: Panel circuit 1 PC4501 CCK-817: Panel circuit 2 PC4502 CCK-790E:...
Page 296 T R 3 2 S A 1 4 5 2 Y C D 1 9 E M 1 Z C D 1 8 + 1 5 V H R 4 1 + 1 5 V F 1 0 P 2 0 F C 3 4 C 3 5 R 4 2 R 4 3...
Page 300 Appendix 11 Setting Table of the Speed Log Select Switches of Display Unit Type NCD-3901-2...
Page 302 Fax 　:＋81-3-3584-8757 International Business Department Phone:＋81-3-3584-8836 Fax 　:＋81-3-3584-8878 Communications Equipmennt Marketinng Department Phone:＋81-3-3584-8845 Fax 　:＋81-3-3584-8879 ● ● ● ● JRC (UK) Limited JRC (UK) Limited JRC (UK) Limited JRC (UK) Limited Overseas Subsidiaries Overseas Subsidiaries Overseas Subsidiaries Overseas Subsidiaries 136, 1st Floor, Friars House, 157/168 Blackfriars Road, London SE18 EZ, U.K.

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Jma-7725-6 Jma-7725-9

JRC JMA-7710-6 Instruction Manual

Preface

Before Operation

Cautions to be Used During Operation

Precautions before Operation

First Aid Treatments

Equipment Appearance

Glossary

1 General and Equipment Composition

2 Names and Functions of Control Panel Switches and Menu Composition

3 Basic Operation

4 Measurement

5 Operations of Ata (Option)

6 True and False Echoes on Display

7 Maintenance

8 Countermeasures for Trouble

9 After-Sales Service

10 Disposal

11 Specification

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Summary of Contents for JRC JMA-7710-6