Furuno CH-250 - Manual (Page 59)

3-9
3.9.1 Deleting all event markers
All event markers can be erased from the screen as follows:
4. Operate the Omnipad to place the cursor outside the display area.
5. Press the [EVENT] key to show the following dialog box. Do the next step within four
seconds, otherwise the dialog box will be erased.
DELETE EVENT MARK?
YES NO
6. Press to select YES and press the [MENU] key. All event markers are erased from the
screen.
3.10 Depth and Horizontal Range Markers
The depth and horizontal range markers function to measure the horizontal range and depth to
a desired echo.
Note: Depth and horizontal range markers cannot be inscribed from the vertical fan display
when it is in the sub window (Horizontal/vertical fan display). Inscribe the markers from
the horizontal display to show it in the vertical fan display.
1. Operate the Omnipad to place the cursor on the location desired.
2. Press the [R/B] key to display the depth and horizontal range markers. Horizontal range and
depth appear on the screen.
3. To erase the depth and horizontal range markers, press the [R/B] key again, or place the
cursor on the depth or horizontal range marker and press the [R/B] key.
NAV
DATA
105
94
Horizontal range
Depth
Horizontal range
marker
Depth marker
Figure 3-12 Depth and horizontal range markers