Furuno RP-250 - Manual (Page 17)

2. TRACK
11
2.4 Smoothing
Even when the vessel is sailing in a straight line the track shown on the display
looks irregular. This is due to signal variation of the external navaid. You can
compensate for this irregularity with smoothing.
A smoothing factor between 1 and 9 is available. OFF provides no smoothing. In
most cases a smoothing setting between 1 and 5 is satisfactory.
1. Press the [NAV MENU] and [5] keys.
2. Press the [8] key to choose smoothing factor.
3. Press the [ENTER] key.
4. Press the [NAV MENU] key to close the menu.
2.5 Erasing Track
In busy traffic, the screen may become cluttered. You can remove all or a
percentage of own ship’s track from the memory to clear the display. Tracks of
other ships can also be cleared.
1. Press the [NAV MENU] key and the [9] key to display the PLOTTER ERASE
menu.
[PLOTTER ERASE]
1 [VIDEO PLOTTER(1)]
2 OWN SHIP PLOT
30%/50%/80%/ALL
3 TARGET PLOT
30%/50%/80%/ALL
4 MARK
OFF/ALL
5 WPT
OFF/ALL
6 NAV LINE
OFF/ALL
PLOTTER ERASE menu
2. Press the [2] key several times to choose OWN SHIP PLOT and the amount
of track you wish to erase.
3. Press the [ENTER] key.
4. To erase other ship's track, press the [3] key several times to choose
TARGET PLOT and the amount of track to erase.
5. Press the [ENTER] key.
6. Press the [NAV MENU] key to close the menu.