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GMR 404/406 Owner’s Manual 7
bAsIc oPerAtIon > rAdAr PAge
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.
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.
To adjust the VRM/EBL:
1. Highlight Adjust and press the ROCKER to the right. Highlight
Adjust and press ENTER.
2. Press right or left on the ROCKER to rotate the EBL around
the center point of the VRM.
3. Press up or down on the ROCKER to increase or decrease
the size of the VMR.
4. Press ENTER to accept the changes.
To move the center location of the VRM:
1. Highlight Move, and press ENTER.
2. Using the ROCKER, move the center point of the VRM to the
selected location.
3. Press ENTER to set the new location.
To use the VRM/EBL, expand the diameter of the VRM so that the
outer edge touches the target. Rotate the EBL until it intersects the
VRM at the target location. The measured range and bearing are
displayed in the lower-left corner of the screen.