CONTENTS
xvii
2.13.6 SETTING AIS DISPLAY TARGET................................................................................. 2-98
2.13.7 SETTING AIS DESTINATION SHIP (DirecTrak
TM
) ....................................................... 2-98
2.13.8 SETTING AIS RETRIEVED VESSEL............................................................................ 2-99
2.13.9 SETTING AIS FILTER.................................................................................................. 2-100
2.13.10 TT Target All Clear ........................................................................................................ 2-100
2.14 SETTING DETECTION LEVELS OF RADAR ALARM ...................................................... 2-101
2.15 PLOTTER UNIT ................................................................................................................... 2-102
2.15.1 DISPLAYING WAYPOINT MARKS ............................................................................. 2-102
2.15.2 DISPLAYING OWN SHIP'S TRACK............................................................................ 2-103
2.16 SETTING TIMED TX............................................................................................................ 2-104
Chapter 3 TRUE AND FALSE ECHOES ON DISPLAY....... 3-1
3.1 RADAR WAVE WITH THE HORIZON.................................................................................... 3-1
3.2 REFLECTION FROM TARGET .............................................................................................. 3-3
3.3 SEA CLUTTER AND RAIN AND SNOW CLUTTER.............................................................. 3-4
3.3.1 SEA CLUTTER ................................................................................................................. 3-4
3.3.2 RAIN AND SNOW CLUTTER .......................................................................................... 3-4
3.3.3 COPING WITH SEA CLUTTER AND RAIN AND SNOW CLUTTER ............................ 3-4
3.4 FALSE ECHOES...................................................................................................................... 3-5
3.4.1 SHADOW ..........................................................................................................................3-5
3.4.2 SIDE LOBE EFFECT........................................................................................................ 3-5
3.4.3 FALSE ECHO BY SECONDARY REFLECTION............................................................ 3-5
3.4.4 FALSE ECHO BY MULTIPLE REFLECTION ................................................................. 3-6
3.4.5 SECOND TIME ECHOES ................................................................................................ 3-6
3.4.6 RADAR INTERFERENCE................................................................................................ 3-7
3.5 DISPLAY OF RADAR TRANSPONDER (SART) ................................................................... 3-8
Chapter 4 MAINTENANCE................................................... 4-1
4.1 ROUTINE MAINTENANCE ..................................................................................................... 4-1
4.2 MAINTENANCE ON EACH UNIT ........................................................................................... 4-2
4.2.1 SCANNER UNIT NKE-2043, 2063................................................................................... 4-2
4.2.2 DISPLAY UNIT NCD-2237............................................................................................... 4-5
4.3 PERFORMANCE CHECK ....................................................................................................... 4-6
4.3.1 TEST MENU ..................................................................................................................... 4-7
4.3.2 SYSTEM INFORMATION ................................................................................................ 4-7
4.3.3 SYSTEM TIME.................................................................................................................. 4-8
4.3.4 SCANNER INFORMATION ............................................................................................. 4-8
4.3.5 HARDWARE INFORMATION.......................................................................................... 4-9
4.3.6 ERROR LOG..................................................................................................................... 4-9
4.3.7 LINE MONITOR .............................................................................................................. 4-11
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