Just looking at the three images, it appears to me that the SI image is being used to cipher up a DI & 2d image. Even the 2d image looks like it's just a color rendering of the DI image of the rolling hills (peaks/valleys) effect.

It appears as though the unit is only using the SI portion of the transducer to produce the images, even though the DI & 2d screens are showing their respective kHz readings. Could there be a transducer setting that isn't "on" ... that would separate the kHz pings ??

... cp