Humminbird 4090501 Zoom Width, Depth Lines, 83 kHz Sensitivity, 455 kHz Sensitivity, Zoom Width, (Advanced), Depth Lines, 83 kHz Sensitivity, 455 kHz Sensitivity

Zoom Width

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, DualBeam PLUS™ Sonar only [386ci])

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, Down Imaging™ only [386ci 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.

Depth Lines

(Advanced)

Settings: Off, On; Default = On

Depth Lines divide the display into four equal sections which are separated by three horizontal depth lines. The depth of each line is displayed along the depth scale. You can turn Depth Lines On or Off.

Sonar Menu Tab 118