ix
Chapter 7: Using the Radar (Analog)................................................................... 149
7.1 Introduction ......................................................................................................149
7.2 What is radar? ..................................................................................................149
Detecting targets ........................................................................................149
Maximum radar range ................................................................................150
Factors impairing a radar picture .................................................................150
7.3 Powering on/off the various scanner operating modes .....................................154
7.4 The radar picture ...............................................................................................155
7.5 Marking a position on the radar screen ............................................................156
7.6 Changing what you see in the radar window ....................................................156
Setting the orientation of the radar .............................................................156
Setting the motion mode ............................................................................158
Showing or hiding the range rings ..............................................................160
Changing the bearing mode for EBLs ..........................................................160
7.7 Getting the best picture ....................................................................................160
Using the GAIN functions ............................................................................160
Using the enhance echoes softkey functions ...............................................163
7.8 Changing the displayed range ..........................................................................165
Radar range and chart scale synchronization ..............................................166
7.9 Measuring distances, ranges and bearings .......................................................167
... Using the range rings ..............................................................................167
... Using the cursor ......................................................................................167
... Using VRMs and EBLs ..............................................................................168
... Using floating VRMs/EBLs .......................................................................170
7.10 Using radar to avoid a collision .........................................................................171
Guard Zones ...............................................................................................171
MARPA .......................................................................................................174
Setting up MARPA .......................................................................................177
Acquiring a target to track ..........................................................................178
Cancelling targets .......................................................................................178
Displaying vessel identity (AIS) ...................................................................179
81244_4.book Page ix Thursday, January 31, 2008 1:53 PM
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