Garmin GPSMAP 4012 Owner's Manual - Page 45

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 define 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 first 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. Heading line Target options Target Cruising Screen - Targeting 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. Using Radar GPSMAP® 4000/5000 Series Owner's Manual 41