Furuno COLOR VIDEO PLOTTER 1833C Operator's Manual page 5

2.10 Measuring the Range......................................................................................................... 2-11
2.10.1 Measuring range by range rings ................................................................... 2-11
2.10.2 Measuring range by cursor ...........................................................................2-12
2.10.3 Measuring range by VRM .............................................................................2-13
2.10.4 Erasing a VRM, VRM indication....................................................................2-14
2.10.5 Erasing EBL/VRM data boxes ......................................................................2-14
2.10.6 Hiding EBL/VRM data boxes ........................................................................2-14
2.10.7 Moving EBL/VRM data boxes .......................................................................2-14
2.11 Measuring the Bearing.......................................................................................................2-14
2.11.1 Measuring bearing by cursor ........................................................................2-14
2.11.2 Measuring bearing by EBL............................................................................2-14
2.11.3 Erasing an EBL, EBL indication ....................................................................2-15
2.11.4 Erasing EBL/VRM data boxes ......................................................................2-15
2.11.5 Hiding EBL/VRM data boxes ........................................................................2-15
2.11.6 Moving EBL/VRM data boxes .......................................................................2-15
2.12 Erasing the Heading Line, North Marker ...........................................................................2-16
2.13 Reducing Noise Interference .............................................................................................2-16
2.14 Rejecting Radar Interference.............................................................................................2-17
2.15 Zoom ..................................................................................................................................2-18
2.15.1 Zooming in on radar targets..........................................................................2-18
2.15.2 Zooming in on ARP, TTM targets ..................................................................2-18
2.16 Shifting the Picture.............................................................................................................2-19
2.16.1 Manual shift ..................................................................................................2-19
2.16.2 Automatic shift ..............................................................................................2-20
2.17 Using the Offset EBL .........................................................................................................2-21
2.17.1 Predicting collision course ............................................................................2-21
2.17.2 Measuring range & bearing between two targets ..........................................2-22
2.18 Echo Trails .........................................................................................................................2-23
2.18.1 Trail time.......................................................................................................2-23
2.18.2 Starting echo trails ........................................................................................2-24
2.18.3 Trail gradation...............................................................................................2-24
2.18.4 Trail color......................................................................................................2-25
2.18.5 Echo trail mode.............................................................................................2-25
2.19 Echo Stretch.......................................................................................................................2-26
2.20 Echo Averaging ..................................................................................................................2-27
2.21 Outputting TLL Data...........................................................................................................2-28
2.22 Guard Alarm .......................................................................................................................2-29
2.22.1 Setting a guard alarm zone...........................................................................2-29
2.22.2 When the alarm is violated... ........................................................................2-30
2.22.3 Cancelling the guard alarm ...........................................................................2-30
2.23 Watchman ..........................................................................................................................2-31
2.23.1 How watchman works...................................................................................2-31
2.23.2 Turning on/off watchman ..............................................................................2-31
2.23.3 Setting watchman stand-by interval ..............................................................2-31
2.24 Suppressing Second-trace Echoes ...................................................................................2-32
2.25 Waypoint Marker ................................................................................................................2-33
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