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TABLE OF CONTENTS
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2. RADAR, CHART RADAR OPERATION................................................................2-1
2.1 How to Transmit ......................................................................................................... 2-1
2.2 How to Tune the Radar Receiver............................................................................... 2-1
2.2.1 Tuning for magnetron radar ...........................................................................2-1
2.3 Pulse Length .............................................................................................................. 2-2
2.3.1 How to select a pulse length .......................................................................... 2-2
2.3.2 How to change the pulse length.....................................................................2-3
2.4 How to Adjust the Sensitivity...................................................................................... 2-3
2.5 How to Suppress Sea Clutter.....................................................................................2-3
2.5.1 How to reduce sea clutter automatically ........................................................ 2-4
2.5.2 How to reduce sea clutter manually............................................................... 2-4
2.6 How to Suppress Rain Clutter.................................................................................... 2-5
2.6.1 How to reduce rain clutter automatically ........................................................ 2-5
2.6.2 How to reduce rain clutter manually............................................................... 2-6
2.7 Interference Rejector.................................................................................................. 2-7
2.8 Echo Stretch............................................................................................................... 2-7
2.9 Echo Averaging.......................................................................................................... 2-8
2.10 Automatic Clutter Elimination (ACE) Function ........................................................... 2-9
2.10.1 How to turn the Automatic Clutter Elimination (ACE) function on/off .............2-9
2.10.2 How to adjust the gain in the Automatic Clutter Elimination (ACE) mode...... 2-9
2.10.3 Automatic Clutter Elimination (ACE) menu .................................................. 2-10
2.10.4 How to get the high sensitivity...................................................................... 2-10
2.10.5 How to suppress the false echoes ...............................................................2-10
2.11 Noise Rejector.......................................................................................................... 2-11
2.12 Wiper........................................................................................................................2-12
2.13 How to Preset Controls for Specific Navigation Purpose......................................... 2-12
2.13.1 How to select a customized echo................................................................. 2-14
2.13.2 How to edit a customized echo .................................................................... 2-14
2.13.3 How to restore a user customized echo to the saved settings.....................2-15
2.13.4 How to restore a user customized echo to the factory default settings........ 2-15
2.14 How to Suppress Second-trace Echoes ..................................................................2-16
2.15 Presentation Modes ................................................................................................. 2-16
2.15.1 How to select a presentation mode.............................................................. 2-17
2.15.2 Description of presentation modes............................................................... 2-18
2.16 How to Select the Range Scale ...............................................................................2-20
2.17 How to Measure the Range to a Target................................................................... 2-20
2.17.1 How to measure the range by using a VRM ................................................2-21
2.17.2 How to set VRM attributes ........................................................................... 2-22
2.18 How to Measure the Bearing to a Target ................................................................. 2-23
2.18.1 How to measure the bearing........................................................................ 2-23
2.18.2 How to select bearing reference ..................................................................2-24
2.19 Collision Assessment by Offset EBL........................................................................ 2-24
2.19.1 How to assess risk of collision .................................................................... 2-24
2.19.2 Point of reference for origin point of offset EBL ........................................... 2-25
2.20 How to Measure the Range and Bearing Between Two Targets.............................2-26
2.21 How to Off-center the Display .................................................................................. 2-27
2.22 Target Trails............................................................................................................. 2-28
2.22.1 Target trails-related indications.................................................................... 2-28
2.22.2 True or relative target trails .......................................................................... 2-28
2.22.3 Trail time ...................................................................................................... 2-29
2.22.4 How to reset target trails .............................................................................. 2-29
2.22.5 How to temporarily remove all target trails from the display ........................ 2-29
2.22.6 Trail stabilization in true motion.................................................................... 2-29
2.22.7 Target trail attributes on the TRAIL menu.................................................... 2-30
2.23 Parallel Index (PI) Lines ...........................................................................................2-30
2.23.1 How to display, erase a PI line..................................................................... 2-31