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3.4 General Radar Operations
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3.4.8 Display Radar Trails (Trails)
Other ships’ movements and speeds can be monitored from the lengths and directions of their trails,
serving for collision avoidance. The trail length varies according to setting.
Changing the length of the trail
Procedures 1 Left-click the Trails button located at the upper left of the display.
2 Select the length of the radar trails to set from the list.
Values of the length of the radar trails are switched.
Short : 15 sec, 30 sec, 1 min, 3 min, 6 min, 10 min, 15 min.
Middle : 30 sec, 1 min, 3 min, 6 min, 10 min, 15 min, 30 min.
Long : 1 min, 3 min, 6 min, 10 min, 15 min, 30 min, 60 min.
Saved trails cannot be erased even when the trail lengths are changed by using Trails
button. Even after the trails display is turned off, the past trails can be displayed traced
back by setting a desired time.
The radar system is start transmission, trails is start plot.
When the range scale is changed, radar trails is erased, and not drawn to the display
again.(*)
The system is plotting trails even while the trails display is off.
If the transmit time is short, the indicated trails duration may not have achieved the
specified time. The radar trails remaining time is indicated at the right of the trails length
setting.
* This System provides a past position function as a track not erased even if the range scale is
changed. Use the past position function to display the target track continuously.
Refer to 5.6.1 Past Position (Past POSN).
Erasing Trails Data
Procedures 1 Hold down the trails remaining time display button of the Trails
combobox for five seconds or more located at the upper right of the
display.
All the saved trails data will be erased. The system starts plotting trails in initial state.
When Trails button is clicked for 2 seconds, a RADAR Trails Setting menu will be
displayed. Furthermore, data will be erased if it continues pushing.
Left-click
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