Garmin GMR 21/41 - Manual (Page 17)

GMR 21/41 Owner’s Manual 11
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• Cross-talk Rejection—toggles cross-talk rejection on or off.
Radar cross-talk may occur when two or more radar equipped
vessels are operating in proximity to one another. Cross-talk
rejection automatically filters out the cross-talk interference.
Display Sub Tab
Use the Display sub tab to adjust settings for: Center Offset, Rings,
Background color, Heading Line, Bearing Reference, and Navigation
Features. The available Display sub tab options are:
• Center Offset—sets your location on the screen. Center
places your current location in the center of the screen. Look
Ahead shifts your current location toward the bottom of the
screen, allowing you to view an area farther ahead. Auto Shift
adjusts your location on the screen according to the current
speed.
• Rings—toggles the radar rings on or off.
• Background—sets the background color for the Radar Page.
Available options are Black, Blue, or White.
• Heading Line—toggles the Heading Line on or off.
• Bearing Reference—sets your bearing, either Absolute or
Relative. Relative calculates the bearing relative to your
vessel's heading. Absolute calculates the bearing relative to
North.
• Navigation Features—allows you to show or hide
navigational features on the Radar Page. Use the ROCKER
and the ENTER key to select or clear options.
• Waypoints—show user waypoints on the Radar Page.
• Bearing Line—show a bearing line on the Radar Page. The
bearing line appears as a line from your current position to
the active destination waypoint.
• Course Line—show a course line from your starting
point to the active destination waypoint, which is similar to
navigation on a map.