Jma-5300mk2 series black box radar, 19” high visibility lcd screen constaview digital signal processing tef multi-level target enhancement high speed version available brushless antenna motors for extended lifetime (6 pages)
Jma-7100 series arpa radar 19” high visibility lcd screen constaview digital signal processing tef multi-level target enhancement high speed version available wide dynamic range receiver (8 pages)
さい。 ● 取扱説明書は必要なときに参照できるよう大切に保管してください。 万一、 ご使用中にわからないことや不具合が生じたときにお役立てください。 PREFACE Thank you very much for purchasing the JRC marine radar equipment, JMA-2343 and JMA-2344. 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.
● ● ● ● 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.
● ● ● ● Cautions to be used during operation● ● ● ● WARNING Do not touch the insides of the scanner unit, transceiver and display unit. Touching any high voltage area, you will get an electric shock. maintenance, inspection and adjustment of internal parts of these equipment, consult with our sales office or distributor in your district.
──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.
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)...
☆ ☆ ☆ ☆ When pulse is beating but breathing has stopped Tilt the victim's head back as far as this face looks back. (A pillow may be inserted under his neck.) Push his jaw upward to open his throat wide (to spread his airway). Pinch the victim's nostrils and take a deep breath, block his mouth completely with yours and blow into his mouth strongly.
☆ ☆ ☆ ☆ 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. 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).
ALL CABLES OF THE RADAR ARE TO BE RUN AWAY FROM THE CABLES OF RADIO EQUIPMENT. (EX. RADIOTELEPHONE.COMMUNICAITONS RECEIVER AND DIRRECTION FINDER.ETC.) ESPECIALLY INTER-WIRING CABLES BETWEEN SCANNER UNIT AND DISPLAY UNIT OF THE RADAR SHOULD NOT BE RUN PARALLEL WITH THE CABLES OF RADIO EQUIPMENT. ご注意 レーダの動作が他の無線装置に、 雑音妨害を与えることを防止するために、 レーダケーブル、 特に空中線ケーブルを他の無線装置のケーブルと平行に設置しないでください。 第 1.4 図 JMA-2343 総合系統図...
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COMPASS NMEA REMOTE MONITOR CFQ-6776(2m) 8.0φ(max) (JRC SUPPLY) SHIP'S MAIN(船内電源) CFQ-6776(2m) 最大 8.0φ (JRC 支給) DC 10.8~42V NOTES: ELIMINATING THE INTERFERENCE ON FREQUENCIES USED FOR MARINE COMMUNICATIONS AND NAVIGATION DUE TO OPERATION OF THE RADAR. ALL CABLES OF THE RADAR ARE TO BE RUN AWAY FROM THE CABLES OF RADIO EQUIPMENT.
故障状況 考えられる原因 CRT に何もでない。 a. 電源部(CBD-1596)の故障。 b. ヒューズ F1 が溶断 c. モニタの故障 d. メインコントロール回路(CMC-1156)の故障 e. 船内電源が下がっている。 a. ヒューズ F2 が溶断。 空中線が回転しない b. モータ部(JMA-2343:CML-645 空中線機内の H-7BDRD0023、JMA-2344:CBP-153)の故障 c. 空中線安全スイッチ(JMA-2344 のみ)の故障 a. 受信機の故障(JMA-2343:CAE-457、JMA-2344: 空中線は回転するがレーダ CAE-457-1) 映像が出てこない (文字やマ b. メインコントロール回路(CMC-1156)の故障。送信ト ーカは出ている。 ) リガ(TI)は? c. モータ部(JMA-2343:CML-645 空中線機内の...
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メインコントロール回路(CMC-1156)の故障。 ている。 ) d. 同調電圧不良 a. メインコントロール回路(CMC-1156)の故障 レーダ映像は出るが文字や マーカが出ない。 a. マグネトロンの劣化、不良 感度が悪い b. 変調器(JMA-2343:CME-307、JMA-2344:CME-308) の故障、パルス幅切り替え不良? c. 受信機 (JMA-2343 : CAE-457、 JMA-2344 : CAE-457-1) 、 MIC の故障。 d. 輻射部、機器間ケーブルの漏水。 (輻射面の汚れ、氷雪の付着、機器間ケーブル内部の 腐食) e. 同調電圧不良 パルス幅切り替え信号(PW)の切断 a. モニタの故障または調整不良。 画面がゆがんだり流れたり する。 b. 水平(HS) 、垂直(VS)同期信号の断線。...
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測地系一覧表 番号 名称 WGS-84 WGS-72 Japan North American 1927 (U.S) North American 1927 (Canada & Alaska) European 1950 (Europe) Australian geodetic 1966 (Australia) Ordance Survery of Great Britain (England) NAD-83 - (no use) - (no use) ADINDAN (Etiopia & Sudan) ARC 1950 (Botswana) AUSTRALIAN GEODETIC 1984 (Australia) BERMUDA 1957 (the Bermudas)
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MINNA (Cameroon) NAHRWAN (Oman) NAPARIMA, BWI (Trinidad and Tobago) OLD EGYPTIAN (egypt) OLD HAWAIIAN (the Hawaii Island) PICO DE LAS NIEVES (the Canary Island) PROVISIONAL SOUTH AMERICAN 1956 (South America) PROVISIONAL SOUTH CHILEAN 1963 (Southern Chile) PUETRO RICO (Puerto Rico and V irgin Island) QORNOQ (South Greenland) RT90 (Sweden) SANTA BRAZ (Sao Maguel, Santa Maria Island)
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Contents PREFACE ······························································································································I Before Operation··················································································································III Cautions to be used during operation·················································································· V PRECAUTIONS BEFORE OPERATION·········································································· VII Cautions for high voltage································································································ VII What to do in case of electric shock ·············································································· VII FIRST AID TREATMENTS································································································· IX ☆First-aid treatments······································································································ IX ☆When pulse is beating but breathing has stopped······················································ XI ☆When both pulse and breathing have stopped ·························································...
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2. Undertake transmission ············································································································166 3.1.2 Tuning operation····················································································································166 3.1.3 Adjusting monitoring and image ···························································································167 3.1.4 Data acquisition and monitoring ···························································································167 3.1.5 Ending the operation and shutting down the system ··························································167 1. Interrupting the transmission ····································································································167 2. Shutting the power off ···············································································································167 3.2 Monitoring Standby ·······················································································································168 3.2.1 Changing the brightness of the screen ················································································168...
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3. Changing the interval between the parallel line cursors ·························································179 4. Using the cross hair cursor ·······································································································179 3.3.14 Floating VRM and EBL ·········································································································180 Setting the #1EBL and #1VRM to enable moving ········································································180 Setting the point of reference and center position·········································································180 Operating the EBL and VRM··········································································································180 Canceling the point of reference or center position·······································································180 3.3.15 Using the parallel line cursor·································································································181...
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3.3.24 Locking a fixed target on the radar PPI screen while the ship is navigating······················194 Commencing True Motion display ·································································································194 Canceling true motion display ········································································································195 3.3.25 Monitoring the motion of other ships (Targets)····································································197 1. Radar display of wake···············································································································197 Commencing radar display of a wake······················································································197 Ending radar display of a wake ································································································197 2.
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Chapter 5 Maintenance and Inspection ···································· 212 5.1 General Maintenance····················································································································212 5.2 Scanner Unit··································································································································213 5.3 Display Unit····································································································································213 5.4 Special Parts··································································································································214 5.5 Circuit Blocks for Repair················································································································214 5.6 Actions to Deal with Abnormalities and Breakdown····································································216 Chapter 6 After-sales Service ··················································· 218 Chapter 7 Disposal ···································································· 220 7.1 Equipment Disposal ······················································································································220 7.2 Disposal of Used Batteries············································································································220 7.3 Disposal of Used Magnetron ········································································································220...
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9.5.2 Power cable (CFQ-6776)······································································································243 9.5.3 Selecting a long cable ···········································································································243 9.6 After-installation Adjustments ·······································································································244 9.6.1 Installation-time check···········································································································244 9.6.2 Functional checks··················································································································244 9.6.3 Adjustment items···················································································································244 9.6.4 Rectifier unit ···························································································································245 9.7 Adjustment Procedures·················································································································246 9.7.1 General adjustments ·············································································································246 1. Adjustments to be made when a part is replaced ···································································246 2.
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9.9 Returning to the Initial Setting Conditions····················································································264 9.10 Maintenance ··································································································································265 9.10.1 General maintenance············································································································265 1. Cleaning·····································································································································265 2. Screw inspection ·······················································································································265 3. Cabling check ····························································································································265 9.10.2 Scanner unit···························································································································266 1. Radiation unit·····························································································································266 2. Rotary drive block (JMA-2344)·································································································267 9.10.3 Display unit·····························································································································268 Cleaning the Display Unit Screen ··································································································268...
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Attached Figures 【Fig. 101 INTERCONNECTION DIAGRAM OF JMA-2343】 【Fig. 102 INTERCONNECTION DIAGRAM OF JMA-2344】 【Fig. 103 POWER SUPPLY DIAGRAM OF JMA-2343】 【Fig. 104 POWER SUPPLY DIAGRAM OF JMA-2344】 【Fig. 105 INTERNAL CONNECTIONS OF SCANNER UNIT NKE-249】 【Fig. 106 INTERNAL CONNECTIONS OF SCANNER UNIT NKE-250】...
Glossary of Radar Terms Analog to Digital conversion Acquisition A-SEA Automatic Sea surface clutter suppression A-RAIN Automatic Rain and snow clutter suppression A-TUNE Automatic Tuning Central Processing Unit Cathode-ray Tube Course-Up Electronic Bearing Line Expansion Fast Time Constant, also known as Rain and snow clutter suppression Global Positioning System Head-Up Interference Rejection...
1 Introduction Function The JMA-2243/2344 series radar devices are marine radar devices that use scanner units including transmitter and receiver and 10 inch monochrome cathode-ray tube utilizing the compact raster scan method for achieving a fully semi-conductor adopted (excluding special electron tubes) system.
Composition Composition of the Radar and Ship Internal Power Source Comprehensive type Scanner unit Display unit Ship internal power source JMA-2343 NKE-249 DC (12V/24V/32V) NCD-4170 JMA-2344 NKE-250 (100V/110V/115V/ (Note) 200V/220V/230V) 50/60Hz single phase Rectifier type (option) NBA-797 (Note) When AC power source is used, the optional rectifier is required.
(EX. RADIOTELEPHONE.COMMUNICAITONS RECEIVER AND DIRRECTION FINDER.ETC.) ESPECIALLY INTER-WIRING CABLES BETWEEN SCANNER UNIT AND DISPLAY UNIT OF THE RADAR SHOULD NOT BE RUN PARALLEL WITH THE CABLES OF RADIO EQUIPMENT. ご注意 レーダの動作が他の無線装置に、 雑音妨害を与えることを防止するために、 レーダケーブル、 特に空中線ケーブルを他の無線装置のケーブルと平行に設置しないでください。 Fig. 1.4 GENERAL SYSTEM DIAGRAM OF JMA-2343...
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COMPASS NMEA REMOTE MONITOR CFQ-6776(2m) 8.0φ(max) (JRC SUPPLY) SHIP'S MAIN(船内電源) CFQ-6776(2m) 最大 8.0φ (JRC 支給) DC 10.8~42V NOTES: ELIMINATING THE INTERFERENCE ON FREQUENCIES USED FOR MARINE COMMUNICATIONS AND NAVIGATION DUE TO OPERATION OF THE RADAR. ALL CABLES OF THE RADAR ARE TO BE RUN AWAY FROM THE CABLES OF RADIO EQUIPMENT.
2 Names and Functions of Control Panel Parts and Menu Composition Functions of the Front Control Panel Keys Normal operations with respect to this radar equipment may be undertaken from the front panel of the display. Moreover, by using functions that are defined by the menu, the op- erator may make full use of the functions of this equipment.
2.1.2 Composition and functions of the soft key switches In order to simplify operations, this equipment is equipped with 4 soft key switches on the front panel. The optional items corresponding to each soft key is displayed at the lower- most part of the screen and the function may be executed by pushing the corresponding key.
2.1.3 Functions of the cross key The cross key is used to move the cross cursor, rotate the EBL, change the size of the VRM and select items from the menu. By pushing the cross key, the cursor moves in the direc- tion pushed and the EBL may be rotated.
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Letter on Screen of Mode Name Lower Reight Corner Enables a EBL EBL mode E Enables a VRM VRM mode V Enables a F EBL/VRM F EBL/VRM mode F Enables the parallel line mode Parallel line mode P Enables the cursor Cursor mode C...
Explanation of Functions within the Menu This radar equipment has, in addition to the capability of operating using the front panel keys (including the soft key), the following operating functions. In this section, the compo- sition, function and method of setting the menu will be explained. 2.3.1 Menu Composition With this radar equipment, it is possible to switch the screen display from the Japanese language, to the English language and to other languages (Chinese, French, Spanish, Ital-...
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Initial Setting Menu Push those keys simultaneously. + + + + MENU MENU MENU MENU ENTER ENTER ENTER ENTER POSITION 35°00.00 N W 135°00.00 ANTENNA HEIGHT GEODETIC 2D 3D FIX FIX MODE DOP LEVEL UP TO 5 UP TO 10 UP TO 20 INITIAL SETTING 1 POSN AVARAGE MOTOR...
2.3.2 Functions within the menu When using functions marked with [ ], connectivity to an external navigation * system is required. FUNCTION Select the operating function of EBL1 and VRM1. Select use of EBL2. Select use of VRM2. FUNCTION Select read for the azimuth value of EBL.
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DISPLAY * Select the information to be displayed on the screen from the positional infor- mation of the ship's head- ing (latitude/longitude; L/L or time difference; TD) or the location information of the waypoint. DISPLAY * Display the waypoint on the PPI screen.
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RADAR SET-UP 1 Set the buzzer sound. The sound becomes louder as the value becomes larger. RADAR SET-UP 1 Set the lighting of the operation panel. BUZZER 0 1 2 3 4 5 6 7 The panel becomes brighter as DIMMER 0 1 2 3 4 5 6 7 TX PILSE...
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INITIAL SETTING 1 MENU ENTER This menu appears when the key and key are pushed simultaneously. Implement various adjustments on the receiver (including rough tuning adjustment) Adjust the bearing of the image INITIAL SETTING 1 on the PPI screen. RECEIVER ADJUST NEXT Adjust the distance of the image 1024...
3 Basic Operations Flow of Operations Turning the power on and starting the system Adjusting the turning Adjusting the monitoring and video Data acquisition and measurement Ending operation and stopping the system Basic operations are explained on the following pages...
Soft key operation The basic operations using the soft key are as follows. From among the 4 switches that are positioned below the screen, push the switch that corresponds to the required function. The items are displayed at the lower part of the screen and the required setting may be undertaken by pushing the switch that corre- sponds to the desired items.
3.1.1 Turning the power ON and starting the system 1 1 1 1 . Turning the power ON . Turning the power ON . Turning the power ON . Turning the power ON In order to turn the power on, push the STBY/OFF...
3.1.3 Adjusting monitoring and image Display the optimal image by adjusting the [TUNE] control (in the case of manual tuning), [GAIN] control, [SEA] control and [RAIN] control on the control panel. The range of monitoring distance may be switched by pushing the "▲ (up)" or "▼ (down)"...
Monitoring Standby 3.2.1 Changing the brightness of the screen (a) Push the OFF key. BRIL/HL OFF BRIL/HL BRIL/HL BRIL/HL OFF OFF Each time this key is pushed, the brightness of the screen increases by a step. When the brightness is at the 8th step (maximum) and if the switch is again pushed, the brightness will be reduced by one step.
Basic Operations 3.3.1 Transmitting (a) Push the X-MIT/OFF key. X-MIT/OFF X-MIT/OFF X-MIT/OFF The system will switch from standby mode to transmission mode. 3.3.2 Interrupting transmission (a) Push the STBY/OFF key. STBY/OFF STBY/OFF STBY/OFF The system will switch into standby mode and the legend "Standby" will appear on the screen.
Range Range ring interval 3.3.5 Erasing ship's heading marker (a) Continue to push the OFF key for 2 seconds or more. BRIL/HL BRIL/HL OFF BRIL/HL BRIL/HL OFF OFF The ship's heading marker shows the heading of the ship. While the BRIL/HL OFF...
3.3.6 Adjusting the tuning Please refer to "3.1.2 Tuning operation". 3.3.7 Adjusting the sensitivity Attention Please ensure that the sensitivity adjustment is made to an optimal level when undertaking monitoring. If the sensitivity is too low, hazardous objects, ships and other floating objects may not be displayed.
3.3.8 Eradicating radar interference Attention Weak echo images from hazardous objects such as other vessels may also be rejected when using the interference rejection function. When observing radar beacons or SART signals, make sure that the interference rejection function is disabled. Radar interference refers to the phenomenon by which microwaves transmitted by a third party radar is picked up directly by the ship's scanner unit and is displayed on the PPI screen.
3.3.9 In the event of rain or snow CAUTION Refrain from setting the rain and snow clutter suppression function needlessly. Doing so may suppress echoes from targets such as other vessels for hazardous objects in addition to echoes from rain and snow thus impairing detection. When using the rain and snow clutter suppression function, ensure that the suppression setting is always at an optimal level.
3.3.10 In case of high waves CAUTION On short range scales, the setting of the sea surface clutter suppression should not be advanced to an extent that results in complete suppression of all clutter. Such a setting may suppress echoes from targets such as vessels or hazardous objects in addition to echoes from the waves and thus impair detection.
3.3.11 Measuring the range to the target To measure the range to the target, the operator may take one of the following actions. • Use VRM (Variable Range Markers) • Move the center of the VRM (floating EBL) • Use the parallel line cursor •...
(b) Push the left or right side of the cross key. This enables operating the VRM selected in (a). • When the lower portion of the cross key is pushed, the size of the VRM will be reduced. • When the upper portion of the cross key is pushed, the size of the VRM will be increased.
3.3.12 Changing the range unit With this radar equipment, the range unit measured using the VRM or cross hair cur- sor may be selected from among the following. NM (nautical miles) KM (kilometers) KY (kilo yards) (a) Select among "NM", "KY", or "KM" in the line "RANGE" - the menu "DISPLAY". (b) Push the key.
1. Using EBL 1. Using EBL 1. Using EBL 1. Using EBL • An EBL is a straight line that is displayed on the PPI screen. • Since the bearing of an EBL can be changed at will using the left and right por- tion of the cross key, the operator is able to measure the bearing of any desired target.
• When the right portion of the cross key is pushed, the EBL rotates in the clockwise direction. Erasing the #1EBL and #2EBL Erasing the #1EBL and #2EBL Erasing the #1EBL and #2EBL Erasing the #1EBL and #2EBL (a) Push the key.
3.3.14 Floating VRM and EBL Use the floating EBL function to move a VRM or an EBL. Only #1EBL and #1VRM may be moved. Setting the #1EBL and #1VRM to enable moving Setting the #1EBL and #1VRM to enable moving Setting the #1EBL and #1VRM to enable moving Setting the #1EBL and #1VRM to enable moving (a) Select "FLOAT"...
3.3.15 Using the parallel line cursor The parallel line cursor function is set to #1EBL and #1VRM The parallel line cursor function is set to #1EBL and #1VRM The parallel line cursor function is set to #1EBL and #1VRM The parallel line cursor function is set to #1EBL and #1VRM (a) Select "PLINE 1"...
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• Magnetic bearing display: This is the bearing of an EBL or cursor displayed with the north indicated by a magnetic compass taken as 0 degrees. (Note): The term "true bearing" and the terms "gyro bearing" or "gyrocompass bearing" used hereafter shall have the same meaning. In order to display the true bearing or magnetic bearing, it is necessary to input the bearing information to the display.
Selection of bearing criteria (magnetic bearing, gyrocompass bearing) Selection of bearing criteria (magnetic bearing, gyrocompass bearing) Selection of bearing criteria (magnetic bearing, gyrocompass bearing) Selection of bearing criteria (magnetic bearing, gyrocompass bearing) Select the bearing criteria as follows. When the connected device a magnetic compass: MAG When the connected device is a gyrocompass: TRUE When GPS or LORAN is connected and the display mode does not become the true bearing display mode even when (a) has been undertaken, switch to the other bearing...
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• True bearing display (north-up display) "North" is displayed as direct north of the PPI screen. Even when the bearing of the ship's bow changes, the bearing of the PPI image does not change. (Gyrocompass or other device that provides bearing information is required.) The ship rotates in the starboard direction The ship's heading marker...
In order to change the method of bearing display on the PPI screen, it is necessary to input the bearing information from a navigation device. Please refer to "3.6.1 Obtaining information on bearing" with respect to bearing display. Course setting in course Course setting in course- - - - up mode Course setting in course Course setting in course...
Displaying the cursor Displaying the cursor Displaying the cursor Displaying the cursor (a) Push the soft key DISPLAY DISPLAY . DISPLAY DISPLAY (b) Push the soft key 4 and select CUR ON . CUR CUR ON CUR ON ON Information will be shown as follows at the lower right of the screen. The cross key is in cursor mode.
3.3.19 L/L display of the cursor In order to use this function, it is necessary to input the ship's position information from a navigation device. Please refer to "3.6.3 Obtaining information on position " with respect to informa- tion on the ship's position. Select "TRUE"...
After magnified Before magnified 2. Changing the transmission pulse width 2. Changing the transmission pulse width 2. Changing the transmission pulse width 2. Changing the transmission pulse width With respect to ranges of 1.5 NM, 3 NM and 6 NM, the transmission pulse width may be changed.
Before magnified (narrow pulse width) After magnified (wider pulse width) 3. Using the zoom function 3. Using the zoom function 3. Using the zoom function 3. Using the zoom function The zoom function allows any given area on the PPI screen to be enlarged by a factor of two. The area to be enlarged is designated using the marker.
Location designated by the marker Canceling the zoom Canceling the zoom Canceling the zoom Canceling the zoom (a) Select "OFF" in the line "ZOOM" - the menu "FUNCTION". The zoom function will be canceled. 3.3.21 Reducing unnecessary noise and emphasizing the target Attention Do not use this function when observing radar beacon, SART signal or a target that moves at high speed across the radar screen.
PR2: This function is used in stabilizing unstable images using PR1. This function is effective when sea surface clutter is abundant. As a rule of thumb, the function should be used at ranges of 3NM or more. Canceling image processing g g g Canceling image processin Canceling image processin Canceling image processin...
Canceling center relocation Canceling center relocation Canceling center relocation Canceling center relocation (a) Push the soft key DISPLAY DISPLAY . DISPLAY DISPLAY (b) Push the soft key 2 and select first CENTER CENTER and then O O O O FF CENT...
(d) Push the key. MENU MENU MENU MENU The menu setting has been completed. 1. After transmitting to the extent of the number of rotations of the scanner unit designated, the system enters the standby mode for the period designated. During standby mode, the echo from the radar disappears from the screen and a timer that shows the remaining time to the next transmission is shown on the display.
3.3.24 Locking a fixed target on the radar PPI screen while the ship is navigating Normally, the PPI image moves as the ship moves. This method of display is called: Relative Motion : RM In contrast to this, the display mode in which the echo images from fixed targets such as land do not move and the location of the ship (center of the PPI) moves according to the course and speed of the ship is called: True Motion...
Canceling true motion display Canceling true motion display Canceling true motion display Canceling true motion display (a) Select "RM" in the line "TM/RM" - the menu "FUNCTION". The TM is canceled and the mode is now N-UP of RM. Relative Motion Display mode: RM FUNCTION FLOAT EBL1/EBL2...
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• The following is an example of switching from relative motion display (RM) to true motion display (TM) Select "TM" The center of the PPI The center of the PPI Relative motion display moves to a location within moves together with the 66% of the radius.
3.3.25 Monitoring the motion of other ships (Targets) One of the following functions is used to monitor the movement of other ships (targets) • Wakes (set using the soft key) • Lookout alarm (set using the soft key) 1. Radar display of wake 1.
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(c) Move the marker using the cross key. Move the marker to the initial point of reference of the zone to be designated. (d) Push the key. ENTER ENTER ENTER ENTER The initial point of reference of the guard zone has been designated. The dotted distance help line and dotted azimuth help line have been fixed.
Changing the alarm mode Changing the alarm mode Changing the alarm mode Changing the alarm mode (a) Push the soft key GUARD GUARD GUARD GUARD (b) Push the soft key 4 to switch the wake time between ALM ALM IN ALM...
Other Convenient Functions 3.4.1 Displaying the ship's speed on the display unit When speed information is input to the display unit, the ship's speed is automatically displayed. Ship's speed In order to use this function, it is necessary to input ship’s speed information from a navigation device.
The order of priority in utilizing bearing information is as follows. M M M M L L L L CMPS+, CMPS- terminals NAVRX, NAVCOM terminals > (priority: high) (priority: low) 3.4.3 Displaying position information (latitude/longitude, LORAN C time difference) of the ship and waypoint information (latitude/longitude) Display of position in Display of position information...
3.4.4 Displaying the waypoint In order to use this function, it is necessary to input of the following information to the display unit: Information on the bearing of the waypoint Information on the distance to the waypoint Information on the ship's speed. Please refer to: "3.6.1 Obtaining information on bearing"...
Miscellaneous Considerations 3.5.1 Replacing the battery (BT1) In order to maintain the information that has been set, the battery (BT1) needs to be replaced at regular intervals. (a) Replacing the battery (BT1) [Type: CR2032-FT6-1, SANYO Electric Co, Ltd.] • Please call the dealer servicing your locality for a replacement battery. (b) Reinitializing •...
3.5.2 In cases of abnormality during operations In the event such phenomena as the screen becoming disturbed or the machine not accepting switch input occurs during use of the radar, initialize using the procedures outlined below. Attention When initialization is undertaken, all setting excluding the menu “INITIAL SET- TING 1”...
External Navigation Devices Please refer to "9.3.4 Display unit rear panel" on connections. This radar equipment has the following busses at the rear of the display unit. CMPS+ and CMPS- terminals of the EXT1(J3) connector ・NMEA NAVRX and NAVCOM terminals of the GPS(J4) connector An external navigation device with either of these busses may be connected for input and output of information.
In order to obtain information on the L/L of the waypoint, one of the following devices need to be connected to the display and the waypoint set in such device. • GPS • LORAN C Information on position is input from either the CMPS or NAVRX terminals. 3.6.4 Obtaining information on distance to the waypoint In order to obtain information on distance to the waypoint, one of the following devices need to be connected to the display unit, and it is necessary that the waypoint set in the...
4 How to Interpret the PPI Screen Height of and the Distance to the Target The maximum distance to a target that can be observed with a radar depends not only on the power of the radar's transmitter, beam width of the scanner unit, and the receiver's sensitivity but also on height of a target, distance to a target and height of scanner unit line etc.
Returns from a Target The intensity of returns from a target is related not only to the size of the target but also to the materials and shape of the components making up the target. Accordingly, larger objects do not necessarily develop strong returns. On coastlines, in particular, the intensity of returns is dependent on their physiographic features.
4.3.1 Sea returns On a wavy sea surface, an echo appears on the PPI screen as a bright defused image at the center of the screen. This echo is developed by returns from the sea surface. The features of the echo depend on the size and range of the wave, and the wind direction. 4.3.2 False echoes There are cases in which nonexistent targets appear as echoes or in which existing targets do not appear as echoes on the PPI screen.
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(d) Multiple echo Multiple echoes are developed by multiple reflections caused by a building or large vessels that has large vertical surfaces. These echoes are spaced at an equal interval, with the one that is closest to the own ship being the true echo. (e) Radar interference If there is a radar that uses the same frequency as that of the own ship near the own ship, interferences caused by that radar appear on the PPI screen.
Display of Radar Transponder SART (Search and Rescue 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.
5 Maintenance and Inspection General Maintenance WARNING The customer should refrain from inspecting or repairing the internal parts of this equipment. Inspection or repair other than by specialized service personnel may result in fire or severe electric shock. Please contact the sales department of Japan Radio Co., Ltd. or your local branch, outlet or sales office with respect to maintenance and repair.
Scanner Unit WARNING When performing maintenance or inspection of the scanner unit, be sure to shut off the main power source. Sudden movement of the scanner may cause collision and injury to the human body. Be sure to shut off the main power source when approaching the scanner unit for the purposes of maintenance or inspection.
Special Parts JMA-2343 Model Name Type Manufacturer Location of use JRC Code Number V201 Magnetron MSF1421B New JRC Scanner unit 5VMAA00049 A101 Circulator H-6AJRD00001 Toshiba Scanner unit 6AJRD00001 A102 Diode limiter NJS6930 New JRC Scanner unit 5EZAA00024 E301 Front end...
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NCD-4170 Name Type Remarks Main control circuit CMC-1156 Power supply circuit CBD-1596 Main panel circuit CCK-873 CCK—872 Soft key panel circuit Interior of the monitor unit CKJ-159 CRT + deflecting coil CRT monitor control unit CCN-366 With socket circuit...
The electric power of the ship is inadequate. The scanner unit does not a. Fuse F2 has blown rotate. b. Breakdown in the motor unit (JMA-2343: CML-645 H-7BDRD0023 inside the scanner unit, JMA-2344: CBP-153) c. Breakdown of the safety switch of the scanner unit...
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Reception is poor. a. Deterioration or fault in the magnetron b. Breakdown in the modulator (JMA-2343: CME-307, JMA-2344: CME-308). Defect in the pulse width switching? c. Breakdown in the receiver (JMA-2343: CAE-457, JMA-2344: CAE-457-1) d.
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.
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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:...
7 Disposal Equipment Disposal Dispose of this equipment by following the ordinances or regulations of the local authorities in charge of the disposal site. 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.
(6) Range ring accuracy ±0.9% of selected range or ±8m, which is greater. (7) VRM VRM1/VRM2 JMA-2343 0 to 48 NM, digital numeric display of 3 figures JMA-2344 0 to 64 NM, digital numeric display of 3 figures (8) EBL EBL1/EBL2 0˚...
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(16) Keys/Controls STBY STBY STBY STBY ・Main panel STBY/OFF X X X X - - - - MIT X-MIT/OFF [TUNE] control [GAIN] control [SEA] control [RAIN] control ▲ ▲ ▲ ▲ RANGE RANGE RANGE RANGE RANGE ▼ ▼ ▼ ▼ BRIL BRIL BRIL...
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(18) Menu EBL1/VRM1 mode setting [EBL1/VRM1] ・FUNCTION (Fix [FIX]/Float [FLOAT]/Parallel line [PLINE]) EBL2 setting [EBL2] VRM2 setting [VRM2] EBL read out [EBL READOUT] Zooming of echo image on PPI [ZOOM] True motion/Relative motion [TM*/RM] Heading mode [HDG MODE] (Head-up [H-UP]/North-up [N-UP]*/ Course-up [C-UP]*) Image process [PROCESS] Position display [POSITION]...
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(19) Input from external device GPS (NMEA0183) Electric compass or GPS compass (NMEA0183) NMEA0183 version : v1.5, v2.1, v2.3 Latitude/Longitude : GGA, RMA, RMC, GLL Waypoint : RMB, BWC Speed : VTG, RMA, RMC, VHW Course : VTG, RMA, RMC Ship’s head : HDT, VHW, HDM, HDG VARIATION...
Unit-to-unit Spacing Maximum Cable Length Standard Cable Length Scanner to display 20m• @ • @ • @ • @ • @ 15m(JMA-2343) / 20m(JMA-2344) Display to rectifier (Note) (Note) About power cable length between display to rectifier, see "9.5.3 Selecting a Long Cable"...
9 Installation This chapter has been written for the service technicians to read in case of installation. WARNING Only specialized personnel shall perform installation work. Installation work performed by personnel other than specialized personnel may cause breakdown of the equipment, poor performance, fire, severe elec- tric shock and other property and human damages.
Installing the Scanner Unit 9.2.1 Selecting the installation location CAUTION The scanner unit shall be installed where there are not large obstacles in the direction of the ship's heading line in the same plane. If there is a large impediment in the same plane as the scanner unit, this may cause the generation of folse echoes.
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(1) Precautions to be observed when installing the scanner unit on a power boat The bow of a power boat is kept in a raised position when it is running at a high speed. Consequently, if the radar's scanner unit is installed horizontally when the boat is stopped, the following conditions will occur if the trim (elevation angle of the ship's bow at run time) exceeds 1/2 of the vertical beam width (θ): •...
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(2) Precautions to be observed when installing the scanner unit on a yacht A yacht heels on the lee side when a wind with a certain level of force blows. The following condition occurs if the heel angle exceeds 1/2 of the beam width: •...
Installing the Display Unit 9.3.1 Selecting the installation location Attention The display unit should be installed at least 1 meter from the magnet compass. If the display unit is installed in the vicinity of the magnet compass, the compass may be affected. Consider the following points when determining the location of the display unit: (a) Install the display unit in a location that provides the operator with a convenient viewing position.
2 pin connector side should be connected to J5 of the display unit main control circuit (CMC-1156). The 3 pin connector need not be. Use the 5 pin connector (Type: LTWD-05BFFA-L180, JRC code: 5JCDX00015) for the plug side connector connected to EXT2.
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To external buzzer control ② +12V ③ ④ ⑤ Example of connection of an external buzzer 12V relay LTWD-05BFFA-L180 +12V Protective diode to EXT2 EXTBUZ Example of Parts Name Manufacturer Type JRC Code Relay Takamizawa LZ12H 5KLAC00033 Diode Hitachi V06C 5TXAE00016...
Electromagnetic compass data (+) 8 pin connector (pin 4) Electromagnetic compass data (-) Type of LTWD-08BFFA-L180 (JRC code: 5JCDX00015) should be used as the 8 pin connector. Unless the connection between the 8 pin connector and data cable is correct, correct data will not be obtained.
Make modifications as shown below based on the inboard power supply. (Fuse for 24V is incorporated upon shipment of the equipment) 1. 1. 1. 1. Display unit Display unit Display unit Display unit Fuse rating Inboard power supply Rating JRC Code Rating JRC Code DC12V 6.3A 5ZFAD00336 5ZFAD00539 DC24/32V 3.15A...
9.5.1 Inter-unit cable (CFQ6774-10/15/20, CFQ6882-10/15/20) (a) This cable is used to connect the display unit to the scanner unit. (b) Use the following cables with connectors for this radar equipment. Cable length JRC Code for JMA-2343 JRC Code for JMA-2344 Remarks CFQ6774-15 CFQ6882-15...
9.5.2 Power cable (CFQ-6776) The radar unit is provided with a 2 m power cable with connectors Number of Conductors Cross Section Color Polarity /Diameter White 50/0.18 1.25 + Black 50/0.18 1.25 - Attention Ensure that the output of the inboard power supply and rectifier unit and connection to the power cable is correct.
After-installation Adjustments 9.6.1 Installation-time check (a) After completing the installation procedure, it is necessary to check the radar unit to verify that all installation steps have been conducted as instructed. In particular, check for correct cabling, for normal component operating state, for water leakage in the scanner unit, and for proper grounding of braided shielding cable.
9.6.4 Rectifier unit ● The rectifier unit can run on inboard voltages of 100/110/115 VAC and 200/220/230 VAC provided that connections at the input terminals on the NBA-797 T701 are changed. The figures below show how to change the connections at the input ter- minals.
Adjustment Procedures 9.7.1 General adjustments 1. Adjustments to be made when a part is replaced 1. Adjustments to be made when a part is replaced 1. Adjustments to be made when a part is replaced 1. Adjustments to be made when a part is replaced Adjustments need to be performed when major parts of the radar unit.
9.7.2 Adjusting the scanner unit The scanner unit has several locations that need adjustment. They are factory set and normally need not be adjusted by the user. If it is necessary to make functional checks during inspection or repair, make the adjustments that are explained below. WARNING Hi-voltage Caution High-tension voltages of 4,000 volts or higher are present at the modulator...
3. Adjusting the tilt angle of the display unit 3. Adjusting the tilt angle of the display unit 3. Adjusting the tilt angle of the display unit 3. Adjusting the tilt angle of the display unit (a) The angle of the screen can be adjusted by loosening the lock screw on the deflection coil assembly at the neck of the CRT tube and turning the entire screen.
Initial Settings This section will explain the method of initial setting of the radar unit. Initial setting needs to be undertaken prior to initial use. Initial setting includes: (a) INITIAL SETTING 1 • Tuning preset (TUNE PRESET) • Bearing adjustment (BEARING) •...
9.8.1 Adjustment of the receiver This adjustment need not be changed in general as the equipment is adjusted ex-factory. If the adjustment is changed inadvertently, it will not be possible to obtain the op- timum tuning even when the TUNE control is operated. 1.
2. Adjusting the central frequency 2. Adjusting the central frequency 2. Adjusting the central frequency 2. Adjusting the central frequency Adjustment is undertaken so that the image is largest when the deflection of the tune level indicator is at the maximum. (a) Undertake operations (a) through (e) of "1.Tune Preset".
9.8.2 Adjusting the noise level This operation adjusts the basic level of the echo that is displayed on the PPI screen. Attention This adjustment need not be changed in general as the equipment is adjusted ex factory. If the adjustment is changed inadvertently, it will not be possible to obtain optimum images as a phenomenon causing reduction in sensitivity may be generated.
(f) Push the cross key, and align the EBL to the image of target's echo. (g) Push the key. ENTER ENTER ENTER ENTER (h) Using the cross key, align the EBL to the bearing of the target measured in (d). The PPI screen also rotates with the EBL.
(i) Adjust the proximate perimeter of the target to the distance to the VRM pushing the "▲ (up)" or "▼ (down)" on the key. RANGE RANGE RANGE RANGE (j) Push the key. ENTER ENTER ENTER ENTER The 0 NM adjustment has been completed. Reference: Reference: When Reference:...
(b) Select the height of the radar antenna among "UNDER 5m", "5m TO 10m", and "MORE THAN 10m". 9.8.6 Presetting the sensitivity This operation sets the maximum sensitivity when [GAIN] control is turned. This adjustment should not be undertaken without reason. When undertaking this adjustment, also undertake "9.8.2.
(d) Push the soft key 1 and select EXP EXP EXP EXP OFF OFF OFF OFF (e) Turn the [GAIN] control to the maximum (turn to maximum clockwise). (f) Turn the [RAIN] control to the minimum (turn to maximum counterclockwise). (g) Turn the [SEA] control to the maximum (turn to maximum clockwise).
(b) Select "INITIAL SETTING 2" in the menu "INITIAL SETTING 1". (c) Select "ON" in the line "SIMULATOR" - the menu "INITIAL SETTING 2". 9.8.10 Setting the TD reception number This operation is for selecting the number of the TD (LORAN C time difference) to be received.
9.8.11 GPS/DGPS 1. Initial setting of GPS 1. Initial setting of GPS 1. Initial setting of GPS 1. Initial setting of GPS This operation is for undertaking initial setting of GPS. The GPS receiver measures posi- tion without initial setting but 10 or more minutes may be required after initial setting. ●...
● Setting mode MANUAL This operation sets the frequency and baud rate of the beacon receiver. This allows receipt of DGPS at an early stage but receipt is not possible unless the ship is in the beacon receipt area that is set. AUTO Automatic search of the beacon transmission station is undertaken for receipt.
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Reception satellite The number of the satellite used for the measurement will be displayed. Bearing, elevation angle : The bearing and elevation angle of the satellite will be dis- played. Signal strength The strength of the signal of the satellite from which signals are being received will be displayed.
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List of Geodetic Systems Name WGS-84 WGS-72 Japan North American 1927 (U.S) North American 1927 (Canada & Alaska) European 1950 (Europe) Australian geodetic 1966 (Australia) Ordance Survery of Great Britain (England) NAD-83 - (no use) - (no use) ADINDAN (Etiopia & Sudan) ARC 1950 (Botswana) AUSTRALIAN GEODETIC 1984 (Australia) BERMUDA 1957 (the Bermudas)
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NAHRWAN (Oman) NAPARIMA, BWI (Trinidad and Tobago) OLD EGYPTIAN (egypt) OLD HAWAIIAN (the Hawaii Island) PICO DE LAS NIEVES (the Canary Island) PROVISIONAL SOUTH AMERICAN 1956 (South America) PROVISIONAL SOUTH CHILEAN 1963 (Southern Chile) PUETRO RICO (Puerto Rico and V irgin Island) QORNOQ (South Greenland) RT90 (Sweden) SANTA BRAZ (Sao Maguel, Santa Maria Island)
Returning to the Initial Setting Conditions In the event such phenomena as the distorted screen or the keys becoming inoperable occurs while the radar is in use, the following procedures shall be taken to initialize the system. Attention When initialization is undertaken, all setting excluding the menu "INITIAL SET- TING 1"...
9.10 Maintenance 9.10.1 General maintenance It is necessary to perform the maintenance services listed below to keep the radar unit in good working conditions. Proper maintenance of the radar unit minimizes the possi- bility of machine failures. The maintenance operations that are common to all compo- nents of the radar unit are listed below.
1. Radiation unit 1. Radiation unit (a) A radiation surface of radiation unit (JMA-2343: Whole surface of the radome cover / JMA-2344: Front side of radiation unit) contaminated by smoke, dust, or paint would cause attenuation or reflections of radio waves, resulting in reduced radar performance.
The carbon brush can be removed by removing the caps located on both sides of the bottom portion of the motor. Contact with the commuter Spring Carbon brush Description Type JRC code Quantity Carbon Brush 54531-01 BRXP05247 (c) Pedestal Check the scanner unit mounting molts occasionally and apply paint semiannually to...
9.10.3 Display unit Cleaning the Display Unit Screen Cleaning the Display Unit Screen Cleaning the Display Unit Screen Cleaning the Display Unit Screen ● Dust on the CRT tube would reduce the glass transparency and make the vide image dim. Wipe the screen surface with a soft lint-free cloth (made of flannel or cotton).
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For further information contact : Nittochi Nishi-Shinjuku bldg. HEAD OFFICE & 10-1,Nishi-Shinjuku 6-chome,Shinjuku-ku, SALES DEPT. Tokyo 160-8328, JAPAN Phone : +81-3-3348-0151 : +81-3-3348-3648 MAIN PLANT 1-1, Shimorenjaku 5-chome, Mitaka-shi, Tokyo 181-8510, JAPAN Phone : +81-422-45-9111 : +81-422-45-9110 FOURTH EDITION JAN.•@2003...