Target Trails (Echo Trails) - Furuno FR1500 Mk3 Operator's Manual

1.25.7 Silencing CPA/TCPA audible alarm
Press the [AUDIO OFF] key to acknowledge and silence the CPA/TCPA audible alarm.
The warning label COLLISION and the flashing of the triangle plot symbol and vector remain on the
screen until the dangerous situation is gone or you intentionally terminate tracking of the target by
using the trackball.
1.25.8 Past plot points
Past plot points may be marked on the display by dots. Up to nine dots can be displayed as follows:
1. Press the [MENU] key.
2. Press the [7] key twice to reach the PLOT MENU 1.
3. Press the [7] key to select OFF or ON from the TRACK field as appropriate.
3. Press the [ENTER/SELECT] key to register your selection followed by the [MENU] key to
close the menu.

1.26 Target Trails (Echo Trails)

It is possible to display the trails of the radar echoes of targets in the form of synthetic afterglow.
Target trails are selected either relative or true and may be sea or ground stabilized. The simulated
afterglow can be selected in a single tone or gradual shading depending on a setting on the TGT
TRAIL menu.
1.26.1 True or relative trails
Target trails may be displayed relative to north or own ship's heading on Relative Motion, and only
relative to north on True Motion. True motion trails require a compass signal and own ship speed
input.
(a) True target trails – no smearing of
stationary targets
Note: When true trail is selected on the RM mode, the legend TRUE TRAIL appears in red.
To select true or relative target trail presentation:
1. Press the [MENU] key.
2. Press the [2] key twice to show the TGT TRAIL menu.
(b) Relative target trails – all targets
moving relative to own ship
-1.24-