Humminbird Side Imaging Forums

Side Imaging Forums => 598c SI HD => Topic started by: SWAMPRAT on May 06, 2014, 08:50:49 AM

Title: 598 ci HD si down image interpretation
Post by: SWAMPRAT on May 06, 2014, 08:50:49 AM

Why do I see images of fish trees etc below the bottom on DI? Im on a fairly flat bottom in 12 FOW in the 20ft range. Gain around 15.

Title: Re: 598 ci HD si down image interpretation
Post by: Humminbird_Greg on May 07, 2014, 10:19:42 AM

Because of the width of the sonar beams that are being used to develop the Di sonar image.  This is telling you that the fish, tree, etc. is farther away from the transducer than the lake bottom is.

You can change this some by selecting a different setting on the Down Imaging Beam Width menu.