GPSMAP
®
4000/5000 Series Owner’s Manual 69
Radar
Assigning a MARPA Tag to an Object
: MARPA requires the use of a heading sensor and an active GPS signal. The heading sensor must
provide the NMEA 2000 parameter group number (PGN) 127250, or the NMEA 0183 HDM or HDG output
sentence.
1. From the Home screen, select .
2. Select , , or .
3. select an object or location
➊
.
4. Select
➋
.
➊
➋
Removing a MARPA Tag from a Target Object
1. From the Home screen, select .
2. Select , , or .
3. Select a targeted object.
4. Select > .
Viewing Information about a MARPA-tagged Object
You can view the range, bearing, speed, and other information about a MARPA-tagged object.
1. From the Home screen, select .
2. Select , , or .
3. Select a targeted object.
4. Select .
Stop Radar Targeting
1. From the Home screen, select .
2. Select , , or .
3. Select a targeted object.
4. Select .
Setting the Safe-zone Collision Alarm
See “Setting the Safe-zone Collision Alarm” (page 17).
Viewing a List of AIS and MARPA Threats
From any radar view or the Radar Overlay, you can view and customize the appearance of a list of AIS and
MARPA threats.
1. From the Home screen, select .
2. Select , , , , , or .
3. Complete an action:
• Select > > > to open the list in Cruising, Harbor, Offshore, Dual
Range, or Sentry mode, or in the Radar Overlay.
