GPSMAP 4000 Series Owner’s Manual
4
u
SInG
r
adar
U
Sin
G
r
adar
Overlay Numbers
—shows or hides cruising, navigation, fishing, sailing, or fuel numbers.
Radar Setup
—access advanced radar settings (
Targeting on the cruising screen
Use the
ROCKER
while viewing the cruising screen to begin targeting. A green ring and a green
line appear. The green ring corresponds with the range rings to help define the distance of an object
from your location. The green line corresponds with the heading line to help define the bearing of
an object from your location. As you move the
ROCKER
, you adjust the point where the green ring
and green line intersect. This point indicates your target. 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
(intersection)
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.
MARPA Target
(only appears when you are targeting a tagged MARPA object)—opens the
MARPA target information window. Remove MARPA objects from this window.
MARPA Targeting
Tracking
MARPA object
Target options
MARPA object
targeted
Opens MARPA
target information
window
MARPA
target lost
Dangerous
MARPA object
