Furuno NAVNET 1833 - Manual (Page 58)

2. RADAR OPERATION
2-24
2.18 Echo Trails
Echo trails are simulated afterglow of target echoes that represent their
movements relative or true to own ship. This function is useful for alerting you
past possible collision situations.
Echo trail
Sample echo trails
2.18.1 Trail time
1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the TARGET soft key.
3. Press the TRAIL soft key.
HIGH
+
359.9 ° R
0.277nm
TRAIL
TRAIL
TIME
RETURN
GRAD
SINGLE
.250/ 319.9
°
M .125nm
SP
HU
TRAIL
ON /OFF
Trail soft keys
4. Press the TRAIL TIME soft key to show the trail time window.
TRAIL TIME
▲
¤ 15 seconds
¡ 30 seconds
¡ 1 minute
¡ 3 minutes
¡ 6 minutes
¡ 15 minutes
¡ 30 minutes
¡ CONTINUOUS
▼
Trail time window