Garmin GPSMAP 3210 Owner's Manual - Page 102
Show Hide, Adjust, To Define a Guard Zone
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Using Radar > Radar Page Guard Zone A Guard Zone is a user-defined area of protection. If a target enters the Guard Zone, an alarm sounds. You can define two Guard Zones. The Guard Zone Menu has two areas, "Guard Zone 1" and "Guard Zone 2." Each area has two settings, Show (Hide) and Adjust. VRM/EBL The (Variable Range Marker (VRM) and Electronic Bearing Line (EBL) tools measure range and bearing to a target. You can move the center point of the VRM, which allows you to measure from one target to another. Two VRM/EBL tools can be active at the same time. The VRM/EBL option has two areas, VRM/EBL 1 and VRM/EBL 2. Each area has two settings, Show (Hide) and Adjust. Radar Guard Zone To Define a Guard Zone: 1. Highlight Show Guard Zone 1 or 2, and press ENTER. 2. Highlight Adjust, and press ENTER. 3. Using the ROCKER, define the area on the Radar Page. 4. Press ENTER to set the Guard Zone. 94 Variable Range Marker (VRM) Electronic Bearing Line (EBL) To start VRM/EBL 1 or VRM/EBL 2: On the Radar Adjustment menu, highlight Show VRM/EBL 1 or VRM/EBL 2, and then press ENTER. You can adjust the diameter of the VRM and the angle of the EBL. GPSMAP 3206/3210 Owner's Manual