Raytheon NSC 18, User Manual

Page: 69 / 84

127.9
°
PI 1
T
0.150 nm
Left
Left
Operator Manual
Raytheon Marine GmbH
Germany
R
NSC 18
RADAR
2 − 51
3748DOC020102 Edition: 14.JAN.2005
2.3.4.4 Parallel index line PI
Parallel index lines PI are used to mark the limits of areas or channels.
These lines can thus be used to observe the progression of a course, for
example.
The parallel index lines can only be called up and positioned (distance and
bearing) using the trackball.
After calling them up, the parallel index lines are shown in the radar video
parallel to the position in a ship’s head up direction.
In addition to the toggle field, the current relative or true direction ( _ ) is shown on
the left and the current distance (nm) to your own position is shown numerically
on the right.
Changing the distance and/or bearing (see Figure: 2 − 27)
Position the cursor on a parallel index line.
Pressing the
trackball button displays a symbol on each parallel index line. This
symbol corresponds to the image of your own position.
The distance for the parallel index lines can now be changed by moving the
cursor (step 1).
Pressing the trackball button changes the functionality from distance to bearing
(step 2).
The direction of the parallel index lines can now be changed by moving the
cursor. Position the cursor close to the compass rose and set the desired
direction.
Pressing the Left trackball button again concludes the two processes. The
symbols are hidden.