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17.10.2
Surface Noise Filter
An automatic filter that attempts to remove Surface Clutter that causes the screen to be
filled up with strong return echoes just below the surface. It may seem that the same
functionality could be achieved using on the STC control however there is main difference
between such control in fact the STC control impacts the capability to detect and track the
bottom and is not designed to cancel completely the surface noise, on the other side the
Surface Noise Filter attempts to cancel completely the surface noise but it doesn't affect
the capability to detect and track the bottom. Filter gradually attenuates surface noises. The
Surface Noise Filter has 9 settings: OFF, 1, ..., 8. When set to 1 the Surface Noise is attenuated
from surface down to a depth of 5 Ft, increasing the Surface Noise increases the depth in which
the Surface Noise is attenuated as well as the attenuation level increases; when the preset
is set to 8 the attenuation is maximum and is applied from surface level down to a depth of 255
Ft, as shown in the Surface Noise Filter Table reported below:
17.11 DISPLAY SETUP
Allows the Fish Finder's display page appearance to be changed.
17.11.0
Color Settings
Allows you to change the color of the Fish Finder display from Blue (default), White, Black,
Gray scale.
Page 122
Figure 17.10.2 - Surface Noise Filter Depth table
Figure 17.11 - Display Setup menu
Figure 17.11.0 - White and Blue background examples
CP190i and CPF190i
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