Furuno CH-270 - Manual (Page 32)

2. HORIZONTAL MODE
2-12
2.9.2 Deleting all event markers
All event markers can be erased from the screen 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 then press the [MENU] key. All event markers are then
erased from the screen.
2.10 Depth and Horizontal Range Markers
The horizontal range, depth and bearing to a fish school can be measured by using the
range and bearing markers.
1. Operate the Omnipad to place the cursor on the location desired.
2. Press the [R/B] key to display the range and bearing markers. Horizontal range, depth
and bearing to the cursor location are shown at the bottom right-hand corner of the
screen.
3. To erase the range and bearing markers, place the cursor at the intersecting point of
the depth and horizontal markers or outside the display area and then press the [R/B]
key.
Bearing marker
Range marker
NAV
DATA
Range and bearing
markers data
→:Horizontal range
↓: Depth
B: Bearing from ship's bow
Range and bearing markers