CONTENTS 
 
ii 
4.3.3  TARGET ENHANCE LEVEL.......................................................................................... 4-12 
4.3.4  GAIN................................................................................................................................ 4-12 
4.3.5  SEA CLUTTER SUPPRESSION ................................................................................... 4-13 
4.3.6  RAIN/SNOW CLUTTER SUPPRESSION ..................................................................... 4-14 
4.4  RADAR TRAILS ..................................................................................................................... 4-16 
4.5  ADJUSTING TT FUNCTION ................................................................................................. 4-17 
4.5.1  VECTOR CONSTANT.................................................................................................... 4-17 
4.5.2  GATE DISPLAY.............................................................................................................. 4-18 
4.5.3  GATE SIZE...................................................................................................................... 4-19 
4.6  SCANNER .............................................................................................................................. 4-20 
4.6.1  SLOPE CORRECTION .................................................................................................. 4-20 
4.6.2  PRF FINE TUNING......................................................................................................... 4-21 
4.6.3  STAGGER TRIGGER..................................................................................................... 4-22 
4.6.4  SCANNER ROTATION SPEED..................................................................................... 4-22 
4.6.5  PRF.................................................................................................................................. 4-23 
4.6.6  SAFETY SWITCH........................................................................................................... 4-24 
4.6.7  TUNE INDICATOR ......................................................................................................... 4-24 
4.6.8  TUNE PEAK ADJUSTMENT.......................................................................................... 4-25 
4.7
  I/F DEVICE ............................................................................................................................. 4-26 
4.7.1  SET GYRO...................................................................................................................... 4-29 
4.7.2  HEADING EQUIPMENT................................................................................................. 4-30 
4.7.3  NSK UNIT SETTING ...................................................................................................... 4-31 
4.7.4  MANUAL HEADING ....................................................................................................... 4-33 
4.7.5  SPEED EQUIPMENT..................................................................................................... 4-33 
4.7.6  MANUAL SPEED............................................................................................................ 4-34 
4.7.7  MAG COMPASS SETTING ........................................................................................... 4-34 
4.8  COM PORT SETTING........................................................................................................... 4-36 
4.8.1  BAUD RATE SETTING .................................................................................................. 4-36 
4.8.2  RX SENTENCE .............................................................................................................. 4-37 
4.8.3  RX PORT ........................................................................................................................ 4-38 
4.8.4  TX PORT.........................................................................................................................4-39 
4.8.5  TX DATA FORMAT ........................................................................................................ 4-40 
4.8.6  TARGET INFORMATION TX......................................................................................... 4-42 
4.9  GPS ........................................................................................................................................ 4-45 
4.9.1  GPS SETTING................................................................................................................ 4-45 
4.9.2  BEACON (DGPS RECEIVER) SETTING...................................................................... 4-52 
4.9.3  SBAS RECEIVER SETTING.......................................................................................... 4-54
 
4.9.4  DISPLAY GPS RECEIVE STATUS ............................................................................... 4-56 
4.9.5  LORAN SETTING........................................................................................................... 4-57 
4.10  CONTROL .............................................................................................................................. 4-62