Garmin Marine GPS System GPSMAP User Manual

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GPSMAP
®
6000/7000 Series Owner’s Manual 77
Radar
3. Adjust the size of the guard zone:
For the GPSMAP 6000 series, use the Rocker and the on-screen arrows
( and ).
For the GPSMAP 7000 series, touch the guard-zone corner and drag.
4. Select
Corner 2 and repeat step 3 to adjust the location of the second corner of
the guard zone.
5. Select
Done.
Radar Targeting
Radar targeting enables you to identify and track objects.
About MARPA
MARPA is primarily used for collision avoidance, through object targeting and tracking.
To use MARPA, you must assign a MARPA tag to a target. The radar system automatically monitors
the tagged object and provides you with information about the object, including the range, bearing,
speed, GPS heading, nearest approach, and time to nearest approach. MARPA indicates the status
of each tagged object (acquiring, lost, tracking, or dangerous), and the chartplotter can sound a
collision alarm if the object enters your safe zone.
MARPA Targeting
Acquiring
MARPA target
Tracking
MARPA target
Lost MARPA
target
Dangerous
MARPA target
Closest point and
time of approach
to dangerous
MARPA target
MARPA Targeting Symbols
Symbol Description
Acquiring a target. Concentric, dashed green rings radiate from the target while the radar is locking
onto it.
Target has been acquired. A solid green ring indicates the location of a target that the radar has
locked onto. A dashed green line attached to the circle indicates the projected course over ground
or the GPS heading of the target.
Dangerous target is in range. A red ring ashes from the target while an alarm sounds and a
message banner appears. After the alarm has been acknowledged, a solid red dot with a dashed
red line attached to it indicates the location and the projected course over ground or the GPS
heading of the target. If the safe-zone collision alarm has been set to Off, the target ashes, but the
audible alarm does not sound and the alarm banner does not appear (page 18).
Target has been lost. A solid green ring with an X through it indicates that the radar could not lock
onto the target.
Closest point of approach and time to closest point of approach to a dangerous target.
•
•
Circular

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