Furuno 1815 Operator's Manual page 7

TABLE OF CONTENTS
5.19 How to Off-center the Display .................................................................................. 5-24
5.19.1 How to select the off-center mode ............................................................... 5-24
5.19.2 Off-center the display ................................................................................... 5-25
5.20 Zoom ........................................................................................................................ 5-26
5.20.1 Zoom mode .................................................................................................. 5-26
5.20.2 How to zoom ................................................................................................ 5-27
5.21 Echo Stretch............................................................................................................. 5-29
5.22 Target Trails ............................................................................................................. 5-29
5.22.1 Trail time ...................................................................................................... 5-29
5.22.2 Trail mode .................................................................................................... 5-30
5.22.3 Trail gradation .............................................................................................. 5-31
5.22.4 Trail color ..................................................................................................... 5-31
5.22.5 Trail level...................................................................................................... 5-32
5.22.6 How to restart, stop the trails ....................................................................... 5-32
5.22.7 Narrow trails ................................................................................................. 5-33
5.22.8 Your ship trail ............................................................................................... 5-33
5.22.9 How to erase all trails................................................................................... 5-33
5.23 How to Program the FUNC Key ............................................................................... 5-34
5.24 Echo Average........................................................................................................... 5-34
5.25 Wiper........................................................................................................................ 5-35
5.26 Characteristics Curve............................................................................................... 5-36
5.27 Own Ship and Barge Markers .................................................................................. 5-36
5.27.1 How to show the own ship marker ............................................................... 5-36
5.27.2 How to show the barge marker .................................................................... 5-37
5.28 Watchman ................................................................................................................ 5-38
5.29 Alarm Message ........................................................................................................ 5-39
5.30 Color Selections ....................................................................................................... 5-41
5.30.1 Preset colors ................................................................................................ 5-41
5.30.2 Custom colors .............................................................................................. 5-41
5.31 Echo Area ................................................................................................................ 5-42
5.32 Initial Sub Menu ....................................................................................................... 5-43
5.32.1 How to open the Initial sub menu................................................................. 5-43
5.32.2 Description of Initial sub menu ..................................................................... 5-43
5.33 Sector Blank............................................................................................................. 5-45
5.34 Other Menu Items .................................................................................................... 5-46
5.34.1 Brill/Color menu............................................................................................ 5-46
5.34.2 Display menu ............................................................................................... 5-48
5.34.3 Echo menu ................................................................................................... 5-48
5.34.4 Units menu ................................................................................................... 5-49
5.35 Navigation Data........................................................................................................ 5-50
5.35.1 Navigation data during standby.................................................................... 5-50
5.35.2 Navigation data at the bottom of the screen ................................................ 5-50
5.36 Waypoint Marker ...................................................................................................... 5-52
5.37 How to Send the Target Position and Enter the Origin Mark ................................... 5-53
6. HOW TO INTERPRET THE RADAR DISPLAY.....................................................6-1
6.1 General ...................................................................................................................... 6-1
6.1.1 Minimum and maximum ranges ..................................................................... 6-1
6.1.2 Radar resolution............................................................................................. 6-2
6.1.3 Bearing accuracy ........................................................................................... 6-3
6.1.4 Range measurement...................................................................................... 6-3
6.2 False Echoes ............................................................................................................. 6-3
6.2.1 Multiple echoes .............................................................................................. 6-3
6.2.2 Sidelobe echoes............................................................................................. 6-4
6.2.3 Virtual image .................................................................................................. 6-4
6.2.4 Shadow sector ............................................................................................... 6-5
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