Radar Targeting - Garmin GPSMAP 4212 Owner's Manual

Using Radar
To enable the guard zone:
From the Home screen, select
To adjust the guard zone boundaries:
1. While the guard zone is on, from the Radar screen, select
Guard Zone Move Guard
>
2. Select an option:
• Corner 1 (and Corner
boat. Use the Rocker
zone. Use Corner 1
• Circular: Joins the guard zone to completely encompass the boat. Use
to adjust the size.

Radar Targeting

NOTE: MARPA requires the use of a heading sensor. The heading sensor must output the NMEA 0183
sentence HDM or HDG.
1. From the Radar screen, use the
on the radar, target options appear along the right side of the screen.
Heading line
Target
2. Select an option:
• Select Create Waypoint
• Select Acquire Target
targeted object.
• Select Drop VRM/EBL
(EBL) to measure range and bearing to a target.
4
Radar > Sentry
Zone.
2): Defines a guard zone that does not completely encompass the
as indicated by the arrows (
or Corner 2 to change the reference point.
Corner  Corner 2
Rocker to begin targeting. As you move the target over objects
Cruising Screen - Targeting
to mark a waypoint at the targeted object or location.
to assign a Mini Automatic Radar Plotting Aid (MARPA) tag to the
to set the Variable Range Marker (VRM) and Electronic Bearing Line
> Menu > Sentry Setup
Menu > Sentry Setup
and ) to define the size of the guard
Circular
GPSMAP 4000 Series Owner's Manual
> Enable Guard Zone.
> Adjust
Corner 1 or Corner 2
Target options