JMA-2343/2344 - ProNav

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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. These interferences appear as clusters of spots of varying patterns. Since they do not occur at the same location with time, they can easily be distinguished from true echoes. Radar interferences can be reduced or eliminated by choosing "ON" from "FUNCTION"-"IR". 【Examples of radar interferences】 210
4.4 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. In order to see the SART or radar beacon mark on the radar screen. 1 RANGE SCALE : Select 6 or 12 nm 2 SEA CLUTTER control : Set to minimum 3 AUTO SEA : OFF 4 TUNE control : DETUNED to reduce the clutter 5 IR : Set IR OFF 6 PROCESS : Set PROCESS OFF Attention 【Example】 • When above settings 1to 6 are made to display SART signals, objects around the own ship will not appear on the radar screen, so perform thorough visual monitoring of the sea area around the own ship to avoid any collision or stranding. Further, when more than one radar systems are mounted, while using a 9GHz band radar for searching SART signals, be sure to use another radar as an ordinary radar to perform monitoring of objects around the own ship to avoid any collision, check of the position of the own ship to avoid any stranding, and so on. Need to return the set for normal operation on completion. 211
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JMA-2343/2344
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Pictorial Indication ●Before Oper
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●Cautions to be used during opera
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──PRECAUTIONS BEFORE OPERATION
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☆When pulse is beating but breath
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機器外観 EQUIPMENT APPEARANC
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Contents PREFACE ·········
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3. Changing the interval between th
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Chapter 5 Maintenance and Inspectio
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9.9 Returning to the Initial Settin
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Glossary of Radar Terms A/D ACQ A-S
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1.3 Composition Composition of the
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Fig. 1.2 OUTLINE DRAWING OF SCANNER
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1.5 General System Diagram SCANNER
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2 Names and Functions of Control Pa
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2.1.3 Functions of the cross key Th
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2.2 Explanation of Screen Readout P
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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
Page 74 and 75: • The following is an example of
Page 76 and 77: (c) Move the marker using the cross
Page 78 and 79: 3.4 Other Convenient Functions 3.4.
Page 80 and 81: 3.4.4 Displaying the waypoint • I
Page 82 and 83: 3.5.2 In cases of abnormality durin
Page 84 and 85: In order to obtain information on t
Page 86 and 87: 4.2 Returns from a Target The inten
Page 90 and 91: 5 Maintenance and Inspection 5.1 Ge
Page 92 and 93: 5.4 Special Parts JMA-2343 Model Nu
Page 94 and 95: 5.6 Actions to Deal with Abnormalit
Page 96 and 97: 6 After-sales Service ★ When aski
Page 98 and 99: 7 Disposal 7.1 Equipment Disposal D
Page 100 and 101: 8.2 Scanner Unit (NKE-249/250) (1)
Page 102 and 103: 8.3 Display Unit (NCD-4170) (1) Dim
Page 104 and 105: (18) Menu ・FUNCTION ・DISPLAY
Page 106 and 107: 8.4 Rectifier Unit (NBA-797A) (1) D
Page 108 and 109: 9.2 Installing the Scanner Unit 9.2
Page 110 and 111: (2) Precautions to be observed when
Page 112 and 113: 234
Page 114 and 115: 9.3 Installing the Display Unit 9.3
Page 116 and 117: ※ The following should be used as
Page 118 and 119: 9.3.6 Connecting an electromagnetic
Page 120 and 121: 9.5 Cable Assemblies 9.5.1 Inter-un
Page 122 and 123: 9.6 After-installation Adjustments
Page 124 and 125: 9.7 Adjustment Procedures 9.7.1 Gen
Page 126 and 127: 3. Adjusting the tilt angle of the
Page 128 and 129: 9.8.1 Adjustment of the receiver
Page 130 and 131: 9.8.2 Adjusting the noise level Thi
Page 132 and 133: (i) Adjust the proximate perimeter
Page 134 and 135: (d) Push the soft key 1 and select
Page 136 and 137: (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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