Horizontal, Vertical And Event Markers (Trackball Operation) - Furuno CH-37 Operator's Manual

3.7 Horizontal, Vertical and Event Markers
(trackball operation)
3-6
The trackball functions to obtain the data (horizontal range and
depth) from own ship to the specified position on the screen
and, combined with the R/B and EVENT keys, switches the
Horizontal, Vertical and Event markers on/off.
1) Position the trackball marker on the desired location.
Event
marker*
2) Press the EVENT key.
3) To erase the marker, place the trackball marker outside
the echo display area and press the EVENT key.
Note: CH-37 stores one event marker.
Horizontal
and Vertical
markers
1) Position the trackball marker on the desired location.
2) Press the R/B key. The horizontal and vertical markers
appear and the distance to the intersection of the mark-
ers is indicated at the bottom left-hand side of the
screen.
3) To erase the marker, place the marker outside the echo
display area and press the R/B key.
* Requires navigation data.
(Continued on next page)
Event marker*
Echo display area
Vertical marker
Horizontal marker
Distance to the intersection
of the markers.