Garmin GPSMAP 3005C - Marine GPS Receiver Owner's Manual page 97

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.
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 by adjusting three
points:
• Corner 1
• Corner 2
• Circular
4. Press ENTER to set the Guard Zone.
GPSMAP 3005C Owner's Manual
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.
Varable Range Marker
(VRM)
To start VRM/EBL 1 or VRM/EBL 2:
On the Radar Adjustment menu, highlight Show VRM/EBL 1 or
Show VRM/EBL 2, and press ENTER.
You can adjust the diameter of the VRM and the angle of the EBL.
u r > r P
sIng AdAr AdAr Age
Electronc Bearng Lne
(EBL)