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History display
*Requires external sensor.
Permanently Displayed Marks and Data
Mark/Data
Trackball Data
B
Range Data
R
Tilt Angle Data
T
(
)
(Continued on next page)
Figure 4-4 Marks and data appearing in the history display
mode
Trackball data:
: Slant range
: Horizontal range
: Depth
B : Bearing
Bearing is shown in 360 or 180 indication system, relative to ship's
heading. In the latter case, "B" is indicated as follows:
.... on the port side
B
P
.... on the starboard side
B
S
Shows the range scale set with the RANGE control.
The tilt angle appears below the range. The tilt angle can be changed
in 1 steps within the range of -5 to 60 . In *target lock and automatic
tilt control, the instantaneous tilt angle appears in parentheses.
Accordingly, both are equal when target lock is on. In automatic tilt,
the upper indication shows the tilt angle set by the TILT lever and the
lower indication the instantaneous tilt angel at which the sonar actually
works.
Description
4-3
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