JMA-2343/2344 - ProNav

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Glossary of Radar Terms A/D ACQ A-SEA A-RAIN A-TUNE CPU CRT CUP EBL EXP FTC GPS HUP IR L/L MARPA MH MOB NM NUP PCB PPI PROCESS PW RR RM SHM STBY STC TD TM TI VCT VD VRM WPT X-MIT Analog to Digital conversion Acquisition Automatic Sea surface clutter suppression Automatic Rain and snow clutter suppression 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 Latitude/Longitude Mini Automatic Radar Plotting Aid Modulator High Voltage Man Over Board Nautical Mile North-Up Printed Circuit Board Plan Position Indicator Process Pulse Width Range Rings (Fixed) Relative Motion Ship’s Heading Marker Standby Sensitivity time control, also known as Sea surface clutter suppression Time Difference True Motion Trigger Vector Video Variable Range Marker Waypoint Transmit 144
1 Introduction 1.1 Function The <strong>JMA</strong>-2243/<strong>2344</strong> 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. This equipment comprises radar as defined in the Wireless Telegraphy Act. 1.2 Features Enhanced fundamental performance of the radar Through switching among 4 steps in terms of pulse width/cycle switching of frequency and switching among 3 steps in receiver bandwidth, enhanced fundamental performance of the radar has been achieved towards display of clearer and higher quality images. Moreover, through the incorporation of advanced digital signal processing, performance in target detection during increment weather has been improved. Confirmation of the ship's position and identifying the waypoint at a glance Through connecting to navigation equipment such as GPS, the location of the ship (numerical value) or a mark on the waypoint may be displayed on the screen and through this, the difference between the bearing of the waypoint and the ship's heading may be grasped at a glance. High operability EBL and VRM that are frequently used are equipped with dedicated switches. Moreover, 4 soft key switches have been incorporated and functions that are relatively frequently used may be operated with ease. Additionally, a system for selecting functions that are infrequently used from the menu has been adopted. 145
Page 1: JMA-2343/2344
Page 4 and 5: Pictorial Indication ●Before Oper
Page 6 and 7: ●Cautions to be used during opera
Page 8 and 9: ──PRECAUTIONS BEFORE OPERATION
Page 10 and 11: ☆When pulse is beating but breath
Page 12 and 13: 機器外観 EQUIPMENT APPEARANC
Page 14 and 15: Contents PREFACE ·········
Page 16 and 17: 3. Changing the interval between th
Page 18 and 19: Chapter 5 Maintenance and Inspectio
Page 20 and 21: 9.9 Returning to the Initial Settin
Page 24 and 25: 1.3 Composition Composition of the
Page 26 and 27: Fig. 1.2 OUTLINE DRAWING OF SCANNER
Page 28 and 29: 1.5 General System Diagram SCANNER
Page 30 and 31: 2 Names and Functions of Control Pa
Page 32 and 33: 2.1.3 Functions of the cross key Th
Page 34 and 35: 2.2 Explanation of Screen Readout P
Page 36 and 37: 2.3 Explanation of Functions within
Page 38 and 39: 2.3.2 Functions within the menu Whe
Page 40 and 41: RADAR SET-UP 1 Set the buzzer sound
Page 42 and 43: 3 Basic Operations 3.1 Flow of Oper
Page 44 and 45: 3.1.1 Turning the power ON and star
Page 46 and 47: 3.2 Monitoring Standby 3.2.1 Changi
Page 48 and 49: Range Range ring interval 3.3.5 Era
Page 50 and 51: 3.3.8 Eradicating radar interferenc
Page 52 and 53: 3.3.10 In case of high waves CAUTIO
Page 54 and 55: (b) Push the left or right side of
Page 56 and 57: 1. Using EBL • An EBL is a straig
Page 58 and 59: 3.3.14 Floating VRM and EBL Use the
Page 60 and 61: • Magnetic bearing display: This
Page 62 and 63: • True bearing display (north-up
Page 64 and 65: Displaying the cursor (a) Push the
Page 66 and 67: Before magnified After magnified 2.
Page 68 and 69: Location designated by the marker C
Page 70 and 71: Canceling center relocation (a) Pus
Page 72 and 73:
3.3.24 Locking a fixed target on th
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• The following is an example of
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(c) Move the marker using the cross
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3.4 Other Convenient Functions 3.4.
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3.4.4 Displaying the waypoint • I
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3.5.2 In cases of abnormality durin
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In order to obtain information on t
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4.2 Returns from a Target The inten
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(d) Multiple echo Multiple echoes a
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5 Maintenance and Inspection 5.1 Ge
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5.4 Special Parts JMA-2343 Model Nu
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5.6 Actions to Deal with Abnormalit
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6 After-sales Service ★ When aski
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7 Disposal 7.1 Equipment Disposal D
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8.2 Scanner Unit (NKE-249/250) (1)
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8.3 Display Unit (NCD-4170) (1) Dim
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(18) Menu ・FUNCTION ・DISPLAY
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8.4 Rectifier Unit (NBA-797A) (1) D
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9.2 Installing the Scanner Unit 9.2
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(2) Precautions to be observed when
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234
Page 114 and 115:
9.3 Installing the Display Unit 9.3
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※ The following should be used as
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9.3.6 Connecting an electromagnetic
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9.5 Cable Assemblies 9.5.1 Inter-un
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9.6 After-installation Adjustments
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9.7 Adjustment Procedures 9.7.1 Gen
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3. Adjusting the tilt angle of the
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9.8.1 Adjustment of the receiver
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9.8.2 Adjusting the noise level Thi
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(i) Adjust the proximate perimeter
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(d) Push the soft key 1 and select
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(b) Select "INITIAL SETTING 2" in t
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● Setting mode MANUAL : This oper
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List of Geodetic Systems No. Name 0
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9.9 Returning to the Initial Settin
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9.10.2 Scanner unit WARNING When pe
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9.10.3 Display unit Cleaning the Di
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JMA-2343/2344 - ProNav

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