JMA-2343/2344 - ProNav

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8.2 Scanner Unit (NKE-249/250) (1) Dimensions NKE-249 ・ Diameter 620mm ・ Height 275mm NKE-250 ・ Swing circle 1220mm ・ Height 432mm (2) Mass NKE-249 Approx. 10.5kg NKE-250 Approx. 24kg (3) Polarization Horizontal (4) Directivity characteristics NKE-249 ・ Horizontal beam width 4˚ ・ Vertical beam width 25˚ ・ Side lobe level -21dB maximum (less than ±10˚ from main lobe) NKE-250 ・ Horizontal beam width 2˚ ・ Vertical beam width 30˚ ・ Side lobe level -23dB maximum (less than ±10˚ from main lobe) -26dB maximum (other than ±10˚ from main lobe) (5) Rotation NKE-249/250 Approx. 27 rpm (6) Transmitter frequency 9410±30MHz (7) Peak power NKE-249 4kw NKE-250 6kw (8) Transmitter tube NKE-249 Magnetron : MSF1421B NKE-250 Magnetron : MSF1422B (9) Pulse length/PRF NKE-249 0.08μs /2250Hz (0.125, 0.25, 0.5, 0.75, 1.5NM) 0.25μs/1700Hz (1.5, 3 NM) 0.5μs/1200Hz (3, 6 NM) 1.0μs/650Hz (6, 12, 24, 36, 48 NM) 222
NKE-250 0.08μs/2250Hz (0.125, 0.25, 0.5, 0.75, 1.5 NM) 0.25μs/1700Hz (1.5, 3 NM) 0.5μs/1200Hz (3, 6 NM) 1.0μs/650Hz (6, 12, 24, 36, 48, 64 NM) (10) Modulator Solid state modulator driver (11) Duplexer Circulator and diode limiter (12) Mixer MIC front-end (13) IF amplifier ・ Intermediate frequency 60MHz ・ Band width 20/6/3MHz ・ Characteristic Semi-log characteristic (14) Noise figure 6dB maximum 223
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JMA-2343/2344
Page 4 and 5:
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
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2.3.2 Functions within the menu Whe
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RADAR SET-UP 1 Set the buzzer sound
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3 Basic Operations 3.1 Flow of Oper
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3.1.1 Turning the power ON and star
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3.2 Monitoring Standby 3.2.1 Changi
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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 88 and 89: (d) Multiple echo Multiple echoes a
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 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
Page 138 and 139: ● Setting mode MANUAL : This oper
Page 140 and 141: List of Geodetic Systems No. Name 0
Page 142 and 143: 9.9 Returning to the Initial Settin
Page 144 and 145: 9.10.2 Scanner unit WARNING When pe
Page 146: 9.10.3 Display unit Cleaning the Di
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