Insignia 350TX - Manual (Page 16)

Menu Functions
Sensitivity. The Sensitivity function controls
the sensitivity of the sonar receiver. The
350TX 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 -5 to +5. A setting of 0 (factory setting)
has no effect on the automatic sensitivity control. Increasing the sensitivity
(+1 through +5) enables the unit to display the information from pro-
gressively smaller sonar returns. By decreasing the sensitivity bias
(-1 through -5), the unit effectively filters small sonar returns.
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.
14
USING THE 350TX
MENU FUNCTIONS
High Sensitivity Low Sensitivity
Sensitivity at “0”