Humminbird 408930-1 GPS Receiver User Manual


 
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Zoom Width
Settings: Narrow, Medium, Wide; Default = Wide
Zoom Width adjusts the width of the Zoom window on the Sonar Zoom View.
50 kHz Sensitivity
(Advanced, XD Sonar only [597ci HD XD])
Settings: -10 to +10; Default = 0
50 kHz Sensitivity changes the sensitivity of the 50 kHz beam. Increasing the
50 kHz Sensitivity will display additional weak returns, and decreasing the
50 kHz Sensitivity will display fewer weak returns.
NOTE: 50 kHz Sensitivity is particularly useful for adjusting the sensitivity of the
50kHzsonarreturnsin the200/50kHzSplitSonarView.The50 kHzsensitivitycan
be adjusted without affecting the sensitivity of the 200 kHz returns shown in the
200 kHz sonar window.
83 kHz Sensitivity
(Advanced, 587ci HD and 597ci HD only)
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
83kHzsonarreturnsin the200/83kHzSplitSonarView.The83 kHzsensitivitycan
be adjusted without affecting the sensitivity of the 200 kHz returns shown in the
200 kHz sonar window.
455 kHz Sensitivity
(Advanced, Down Imaging™ Views only
[587ci HD DI, 597ci HD DI])
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.
Sonar Menu Tab