Furuno CH-270 - Manual (Page 18)

1. OPERATIONAL OVERVIEW
1-6
1.5 Choosing a Display
This sonar has eight display modes and you may choose one with one of the DISPLAY
MODE keys. Refer to the chapter shown in the illustration for more information about each
mode.
Water temp/depth
Key Key
VERTICAL SCAN
Vertical section of underwater conditions
appears on the entire screen. (Chapter 3)
NAV
DATA
ECHO SOUNDER
NAV
DATA
or
A-SCOPE
DISPLAY
NAV DATA
HORIZONTAL/HISTORY
The horizontal picture appears in the main
window; the history picture in the sub
window. Useful for showing history of fish
movement, distribution. (Chapter 2)
Picture
NAV DATA
HORIZONTAL/VIDEO PLOTTER
The horizontal picture appears in the main
window and the video plotter picture, which
traces ship's track, in the sub window.
(Chapter 2)
NAV DATA
HORIZONTAL/VERTICAL SCAN
NAV
DATA
HORIZONTAL
This mode provides 360 degree coverage.
Useful for general search. (Chapter 2)
HORIZONTAL/STRATA
The horizontal picture appears in the main
window; the strata picture in the sub window.
The strata picture shows bottom undulatons
in different colors. It is useful in bottom
trawling to avoid projections. (Chapter 2) The horizontal picture appears in the main
window; the vertical scan picture in the sub
window. Note that the vertical scan display
may be located below the horizontal
display, with both displays nearly equal
in size. (Chapter 3)
NAV DATA
Picture
HORIZONTAL EXPANSION
Zoomed horizontal picture appears over
the entire screen. (Chapter 2)
NAV
DATA
Using a fixed spot beam this display
shows fish echoes below or around the
vessel. (Chapter 4)
Display modes