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4. ECHOSOUNDER
5-2
Description of marks and data on the normal display
Shows own ship’s present position and points in bow direction.Own Ship Mark
When a heading sensor is connected, the North mark is displayed and
points to North.
North Mark*
The heading mark is a dashed line extending from the screen center
to the edge of the outermost range ring and it points in the direction of
ship’s heading.
Mark/Data Description
* = Requires appropriate sensor.
Heading Mark
North mark
Heading mark
°
Sets own ship’s mark location for off-center display; sets location for
mark input; measures range and bearing. The trackball controls
this mark.
Range setting, selected with the [RANGE] control, appears at top
right corner of the sonar display.
The tilt angle appears below the range indication at the top right corner
of the sonar display. The tilt angle can be changed in 1
°
steps within
the range of 0
°
to 55
°
. 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 angle at which the sonar actually works.
Relative bearing
Bearing is shown in 360° or ±180
°
indication system, relative to ship’s
heading. In the latter case, "B" isindicated as follows:
.... on the port side
.... on the starboard side
Trackball Mark
Tilt Angle Data
P
S
B
B
Trackball Mark Data
→
↓
↓
B
°
T
()
Range Data
R
Trackball mark data: , slant range;
→, Horizontal range; ↓, Depth,
B, Bearing. Appears at top left corner of the sonar display.
Gain
G .
The gain chosen with the [GAIN] control appears on the top right
corner of the sonar display.
↓
Own Ship Position
Mark
The own ship position mark is entered at own ship’s position, with
the [EVENT] key. 10 marks may be entered.
Heading
With connection of a heading sensor, heading is shown 32 compass
points (N, N/NE, etc.). The heading may also be displayed in true
bearing in which case the indication is 360
°
.
Indication format may be selected with OTHER MARKS on the MARKS
menu.
Function Key Number
F
Function key number appears at the top right corner of the sonar
display.