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10 GMR 20/40 Owner’s Manual
GMR 20/40 OPERATION > THE RADAR ADJUSTMENT MENU
To Define a Guard Zone:
1. Using the ARROW KEYPAD, highlight Show Guard Zone 1/2
and press the ENTER key.
2. Using the ARROW KEYPAD, highlight Adjust and press the
ENTER key.
3. Using the ARROW KEYPAD, define the desired area on the
Radar page.
4. Press the ENTER key to accept the change.
With a Guard Zone selected on the Radar page, Soft Key options may
be available.
VRM/EBL
The VRM (Variable Range Marker) and EBL (Electronic Bearing
Line) tools measure range and bearing to a target. The center point
of the VRM can be moved, allowing measurement from one target to
another. Two V/E tools can be activated at the same time.
The VRM/EBL Menu has two areas, “VRM/EBL 1” and “VRM/EBL
2.” Each area has two settings, a setting to Show/Hide the VRM/EBL
and Adjust.
To activate VRM/EBL 1 or 2:
Using the ARROW KEYPAD, highlight Show VRM/EBL 1/2
and press the ENTER key.
The diameter of the VRM and the angle of the EBL are adjustable.
To adjust the VRM/EBL:
1. Using the ARROW KEYPAD, highlight Adjust and press the
ENTER key.
2. Press the ARROW KEYPAD right/left to rotate the Electronic
Bearing Line around the center point of the VRM.
3. Press the ARROW KEYPAD up/down to increase/decrease
the size of the Variable Range Marker.
4. Press the ENTER key to accept the changes.
Variable Range Marker
(VRM)
Electronic Bearing Line
(EBL)