Furuno CH-300 - Manual (Page 67)

3. VERTICAL SCAN MODE
3-9
3.10.1 Deleting all event markers from the vertical scan display
All event markers inscribed on the vertical scan display may be deleted as follows:
1. Operate the Omnipad to place the cursor outside the display area.
2. 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?
NO YES
3. Press ► to choose YES and press the MENU key.
3.11 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 scan
display when it is in the sub window (Horizontal/vertical scan display). Inscribe the markers
from the horizontal display to show it in the vertical scan 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
Depth and horizontal range markers