
USING THE 105SX
MENU FUNCTIONS
Menu Functions
Sensitivity. The Sensitivity function controls the sensitivity of the sonar receiver. The
105SX automatically adjusts the level of
receiver sensitivity based on a number of factors including the depth of the water
and the level of noise present. Noise can be caused by other electronic devices, engines,
trolling motors, propeller cavitation and
hydrodynamic flow among others.
The user has the option of adjusting the Sensitivity higher or lower based on personal preference. You can select one of 11 sensitivity settings from
In murky or muddy water, it is often helpful to reduce the sensitivity. This
prevents the display from being
cluttered with sonar returns from debris or suspended particles. In very clear or very deep water, it may be helpful to increase the sensitivity since even the smallest sonar return may be of interest to the user.
To adjust Sensitivity, press MENU repeatedly until the Sensitivity heading is displayed. When the Sensitivity menu appears, use the UP ARROW to increase the sensitivity, or the DOWN ARROW to reduce sensitivity. To sequence through the available settings, press and hold either ARROW button. Release the button at the setting you want to change.
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