Furuno RP180 - Manual (Page 48)

7. ALARMS
7-3
7.2 XTE Alarm, Border Alarm
The XTE (cross-track error) alarm warns you when own ship is off its intended course.
The Border alarm alerts you when own ship is nearing an area which you do not want to
approach.
: Alarm range
Setting line
Own ship's position
Alarm
setting
: Alarm
Destination
waypoint Own ship
position
Alarm
setting
Intended
course
XTE ALARM
BORDER ALARM
XTE alarm, border alarm concept
1. Press [MENU], [1], [1], [0], [0], [2], [2] to display the Alarm Set menu.
2. Press the [3] key to choose XTE or Border.
3. Press the [ENTER/SELECT] key.
4. Key in alarm range (0.001-9.999). (To cancel input, press the [CANCEL/CLEAR] key.)
5. Press the [ENTER/SELECT] key.
6. Press the [MENU] key to finish.
To disable the XTE alarm or Border alarm, choose Off at step 2 in the above procedure.