Operation Manual

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User Manual
Note
The Frequency value is only displayed: to select the desired frequency see the previous Par. 6.5.7.
6.5.9.2 Gain
Allows you to control the Gain of the unit's receiver. To see more details on
the screen, increase the receiver sensitivity by selecting a higher gain percentage. If
there is too much detail or if the screen is cluttered, lowering the sensitivity may
increase the clarity of the display.
6.5.9.3 STC
Sensitivity Time Constant: it is a time varying gain curve which attenuates
the sonar receiver gain in shallow water, increasing the gain gradually as the depth
increases. This is for the purpose of filtering out surface clutter.
6.5.9.4 STC Length
If STC is Custom, it is possible to change the Length of the Sensitivity Time
Constant.
6.5.9.5 STC Strength
If STC is Custom, it is possible to change the Strength of the Sensitivity
Time Constant.
6.5.9.6 Surface Noise Filter
This function implements an advanced time varying filter that allows
suppressing the surface clutter efficiently while leaving fish targets visible.
Note
Thus imposing the capability of the Fish Finder to correctly detect the weakest echoes coming from
a very deep bottom.
6.5.10 DISPLAY SETUP
The Display Setup Menu allows you to change the color scheme of the Fish
Finder display, adjusts the chart scrolling rate, enables or disables the White Line and
allows determining the graphical representation of fishes.
'MENU' + "DISPLAY SETUP" + 'ENTER'
6.5.10.1 Color Settings
Allows you to change the color scheme of the Fish Finder display. The
available colors are Blue Background, White Background, Black Background, Gray
Scale and Reversed Gray Scale.