Suppressing Second-Trace Echoes; Displaying External Waypoint And Navigation Line - Furuno FR-2105 Operator's Manual

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
No cross track error correction
at turning line
Navigation
line
Course
Turning
Own ship
line
Track
TURNING LINE: ON
-1.57-
[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
Cross track error correction at
turning line
Turning line
TURNING LINE: REVISED