Quote Originally Posted by Humminbird_Greg View Post
That is what I understand Rickie.
I understand how the SI unit generates a DI image from "normal" SI data by blending both the left and right Si sonar:

The left and right of the SI image are rectangles....:
*- take the right Si sonar and rotate it 90 degrees clockwise.
*- take the left Si sonar and flip it horizontally (mirror image) and then rotate it 90 degrees clockwise.
*- overlay the two images and you have a Di sonar image.

What my mind is trying to grasp is how the unit generates the rectangular DI image from the "circular shaped" 360 image seen on the 360 display view...

Rickie