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GPSMAP
®
4000/5000 Series Owner’s Manual 41
Using Radar
Using
Radar
2. Select from the following options:
Corner 1 (and Corner 2): Use the ROCKER (GPSMAP 4000 series) as indicated by the
arrows ( and ) to dene the size of the guard zone. Select Corner 1 or Corner 2 to
change the reference point. For GPSMAP 5000 series units, touch Corner 1, and then touch
the point on the screen at which you want the rst corner of the guard zone. Repeat this with
Corner 2.
Circular: Joins the guard zone to completely encompass the boat. Use Corner 1 or Corner 2
to adjust the size.
Corner 1 Corner 2 Circular
Radar Targeting
Use the ROCKER (GPSMAP 4000 series) or touch the target location (GPSMAP 5000 series) to
begin targeting. As you move the target over objects on the radar, target options appear along the
right side of the screen.
Cruising Screen - Targeting
Heading line
Target options
Target
To stop targeting, select Stop Pointing.
Create Waypoint—marks a waypoint at the targeted object or location.
Acquire Target—
assigns a MARPA (Mini Automatic Radar Plotting Aid) tag to the targeted object.
NOTE: MARPA requires the use of a heading sensor. The heading sensor must output the NMEA 0183
sentence HDM or HDG.
Drop VRM/EBL—sets the Variable Range Marker (VRM) and Electronic Bearing Line (EBL) to
measure range and bearing to a target.
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