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4. ECHO SOUNDER MODE
4-5
4.7 Measuring Range by Cursor
Use the cursor to display the range from own ship to the cursor location. Use the Omnipad
to place the cursor where desired. The range to the cursor appears at the upper left-hand
corner of the screen.
NAV
DATA
or
A-SCOPE
DISPLAY
Range to cursor
Cursor
: Range
↓
How to measure range with the cursor
4.8 Event Marker
The event marker functions to mark important locations on the screen, and five may be
inscribed. Each time the [EVENT] key is pressed the “latest event marker” (
⊕) is inscribed at
the cursor location and all previously entered event markers are shown by the “previous
event marker” (+). When the capacity for event markers is reached, the eldest event marker
is erased from the screen to make room for the latest.
Note 1: The event marker inscribed on the echo sounder display will also be inscribed on
the horizontal and video plotter displays. However, the marker is always inscribed
at own ship position on the horizontal and video plotter displays regardless of the
location of the marker on the echo sounder display.
Note 2: The latitude and longitude position of the event marker can be output to a video
plotter and that position inscribed on the plotter’s screen with the external waypoint
mark (X). Each press of the [EVENT] key outputs event marker position. For further
details, see TARGET L/L in paragraph 5.4.2.
Note 3: Event markers are automatically erased as they move off the screen with picture
advancement. However, event marks entered from the echo sounder remain on the
horizontal and video plotter displays, until they are erased.