Humminbird Fish Finder 409000-1 User Manual

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Sonar Menu Tab
Zoom Width
(Sonar Zoom View only)
Settings: Narrow, Medium, Wide; Default = Wide
Zoom Width adjusts the width of the zoomed view on the Sonar Zoom View,
which is on the left side of the display. See Views: Sonar Zoom View for
more information.
83 kHz Sensitivity
(Advanced)
Settings: -10 to +10, Default = 0
83 kHz Sensitivity changes the sensitivity of the 83 kHz beam. Increasing
the 83 kHz Sensitivity will display additional weak returns, and decreasing
the 83 kHz Sensitivity will display fewer weak returns.
NOTE: 83 kHz Sensitivity is particularly useful for adjusting the sensitivity of the
83 kHz sonar returns in the 200/83kHz Split Sonar View. The 83kHz sensitivity can
be adjusted without affecting the sensitivity of the 200 kHz returns shown in the
200 kHz sonar window.
455 kHz Sensitivity
(Advanced, with optional purchase QuadraBeam
PLUS™ transducer)
Settings: -10 to +10, Default = 0
455 kHz Sensitivity adjusts the sensitivity of the 455 kHz beam. Increase the
sensitivity to display additional weak returns and decrease the sensitivity to
display fewer weak returns.
A QuadraBeam PLUS™ transducer must be attached to the Fishing System.
The 455 kHz Sensitivity menu option is available when Transducer Select is
set to QuadraBeam (see Sonar Menu Tab: Transducer Select) and User
Mode is set to Advanced (see Setup Menu Tab: User Mode).
NOTE: Visit our web site at humminbird.com to order this accessory online or
contact our Customer Resource Center at 1-800-633-1468.
NOTE: 455 kHz Sensitivity is particularly useful for adjusting the sensitivity
of the 455 kHz sonar returns in the Side Beam View. The 455 kHz sensitivity
can be adjusted without affecting the sensitivity of the 200 kHz returns
shown in the 200 kHz sonar window.

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