A-Scope - Raymarine DSM25 Owner's Handbook Manual

36

3.7 A-Scope

A-SCOPE
ON OFF
Use the A-Scope screen to show raw sonar data directly from the transducer
beam. This gives you a "real time" image of fish and bottom structure directly
below the transducer. This function is very useful in showing the strength of the
echo returned from a fish. The display is split vertically, with the A-Scope image in
the right hand window and the scrolling bottom image in the left hand window.
Select one of the three modes for A-Scope:
• MODE 1, in which the image takes up the entire A-Scope window.
• MODE 2, in which only the left side of the image displayed in MODE 1 expands
to the entire A-Scope window. This mode provides the greatest resolution.
• MODE 3, in which the A-Scope image is angled outward as the signal width
(indicated with dotted lines) increases with depth.
The default setting is OFF.
200 kHz
42
44
43
43 9
A-SCOPE A-SCOPE MODE
A-SCOPE A-SCOPE MODE
ON OFF 1
ON OFF 1
Note: If the Bottom Lock or Zoom image was displayed, selecting A-Scope automatically
switches OFF Bottom Lock and Zoom.
A-SCOPE MODE
1 2 3
34
36
47
47
ft
2 3
2 3
A-Scope MODE 1
0
20
40
43
44 44
60
DSM25 Owner's Handbook
MODE 2
14.2 14.2
MODE 3
14.2
D7912-1