Chapter 6: The Fishfinder 135
below the transducer by using the A-Scope feature. The width of the bottom area
covered by the A-Scope is indicated by the number at the bottom of the window.
‘A-SCOPE’ modes
When A-Scope is on you can select one of three display modes:
To display the A-Scope image
1. Select A-Scope on the SELECT VIEW softkey.
2. Choose your mode on the A-SCOPE MODE softkey.
6.7 Range control
Changing the range
You can change the range for each displayed frequency from the Range Adjust
toolbar, which gives you control over the range and range-shift settings.
The DSM automatically adjusts the display to show the shallowest required range.
Alternatively, you can range in or out on the image, up to the maximum depth
displayed on the scrolling bottom and A-Scope images. Changes to the range affect
all fishfinder windows.
D6674-3
MODE 1
The A-scope
image is centred
in the window.
MODE 2
The left-hand side
of the Mode 1
image is expanded
to give a more
detailed view.
MODE 3
The A-scope
image angles
outward as
signal width
increases with
depth.
81244_4.book Page 135 Thursday, January 31, 2008 1:53 PM
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