Interference that looks like a Dead Zone when Using a Panoptix LiveScope

When using Panoptix LiveScope in shallow water, strong bottom returns will affect the image. At times, this interference will cause images to look like a dead zone or a ghost tree. Interference of this type may occur at locations where it previously did not happen. Factors such as water type, clarity, mineral content, etc. affect the performance of sonar. The higher the frequency, the more artifacts may appear.

NOTE: Panoptix scanning sonar transducers are not exclusively reliant upon transponding frequencies down for depth in order to render a return on the chartplotter. The frequencies are transponding off any identifiable target between the frequency ranges supported by the transducer. Interference between multiple Panoptix transducers is not common.

Noise Reject set to off   

  Noise Reject set to medium

Noise rejection does reduce this onscreen, but in the process diminishes sensitivity if the Noise Reject is turned up too high, it can cause a reversal of the ghost tree image to look like a dead zone.

Noise Reject and other settings too high created a 'dead zone'

This image does not have the Noise Reject turned on

1. Increase the cant angle of the transducer. Changing the cant angle will make the bottom return weaker, reducing the interference will also lessen the visibility of the lure in the beam

   • Use a plastic or rubber washer file down one side

   • Place the washer between 1 and 2 (see figure). The rubber washer should not be so thick that it requires a longer screw

2. Move the boat, so the range forward is not as similar to the depth

In very shallow water, the Perspective mode excels for range and has fewer interference issues. The perspective mode mount may not work for every user's situation if the depth information of the lure and fish is required, use the shaft mount, adjust the cant angle and adjust settings.