Raytheon NSC 18 User Manual page 56

Operator Manual
Relative Motion (T) with TRAILS
In this case, land masses, buoys, ships at anchor, etc. appear exactly as they
are, as stationary objects. Objects in motion, including your own ship, move
across the radar video with the correct true speed and course. The trail afterglow
displays the track.
Set 1 Set 2
Set 1
Buoy
Set 2
Ship in motion
Figure: 2−21 Relative Motion (T) with TRAILS
TRUE MOTION
If True Motion is selected, land masses, buoys, ships at anchor, etc. appear
exactly as they are, as stationary objects, while objects in motion, including your
own ship, move across the operating screen with the correct true speed and
course.
True Motion mode is available for range scales from 0.25 nm to 24 nm
(inclusive) and in either N UP or C UP mode. If the range moves above 24 NM,
the origin of your own ship is centered.
2−38
3748DOC020102 Edition: 14.JAN.2005