Furuno FR-2105-B - Manual (Page 74)

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1.36 Suppressing Second-trace Echoes
In certain situations, echoes from very distant targets may appear as false echoes
(second-trace echoes) on the screen. This occurs when the return echo is received one
transmission cycle later, that is, after a next radar pulse has been transmitted.
To activate or deactivate the second-trace echo rejector:
1. Press the RADAR MENU, [0], [0], [2] and [0] key to show the RADAR 2 menu.
2. Press the [9] key to select menu item 2ND ECHO REJ option.
3. Further press the [9] key to activate (ON) or deactivate (OFF) the second-trace echo
rejector.
4. Press the ENTER key to conclude selection followed by the RADAR MENU key to
close the RADAR menu.
1.37 Displaying External Waypoint and Navigation Line
Waypoint or navigation line defined on another navaid can be displayed by setting
WAYPOINT and NAV LINE menu as follows. To display the menu, press the NAV MENU
and [8], [2] for waypoint or [7], [2] for navigation line if video plotter is not provided.
[WAYPOINT]
1 [NAV INFORMATION 1]
2 WPT MARK
OFF/ON
3 WPT
4 WPT LINE OFF/ON
5 WPT NO. OFF/ON
6
7
8 ARRIVAL ALARM
OFF/ON
x.xxNM
[NAV LINE]
1 [NAV INFORMATION]
2 NAV LINE
OFF/ON
3
4 NAV WIDTH
OFF/ON
x.xxxNM
5 WPT NO. OFF/ON
6
7
8 ARRIVAL ALARM
OFF/ALL
x.xxNM
9 TURNING LINE OFF/ON/REVISED
No cross track error correction
at turning line Cross track error correction at
turning line
Turning line
Turning
line
TURNING LINE: ON TURNING LINE: REVISED
Own ship
Navigation
line
Course
Track