JMA-2343/2344 - ProNav

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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. (a) Push the soft key PROCESS . (b) Push soft key 2 to select IR 1 . (c) If radar interference cannot be rejected using IR 1 , push soft key 2 and select IR 2 . When not undertaking interference rejection, push soft key 2 and select IR OFF . (d) Push the MENU key. The soft key menu will return to the initial function display. Interference rejection is enabled. Prior to rejection of interference After rejection of interference Example of radar interference 172
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. When rain or snow falls, echo from the rain or snow (rain clutter) appears on the PPI screen making it difficult to see images of echoes from vessels or other objects. By using the [RAIN] control function or the "automatic rain and snow" function, rain clutter may be suppressed facilitating monitoring of the target. When the "automatic rain and snow" function is operating, it is not possible to use the [RAIN] control function. Manual rain and snow clutter suppression (a) Turn the [RAIN] control. As the control is turned to in the clockwise direction, the rain and snow clutter suppression function becomes stronger. Automatic rain and snow clutter suppression (a) Push the soft key PROCESS . (b) Push the soft key 1 and select A-RAIN . Rain and snow clutter suppression is enabled depending on the condition of the image. (c) Push the MENU key. The soft key menu will return to the initial function display. Rain clutter is being shown as an image 173 Rain clutter has been suppressed (the image of the echo from the target is also suppressed).
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 22 and 23: Glossary of Radar Terms A/D ACQ A-S
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 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 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
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(2) Precautions to be observed when
Page 112 and 113:
234
Page 114 and 115:
9.3 Installing the Display Unit 9.3
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※ 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
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(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
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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