Originally Posted by
SLYDoggie
I did some additional testing and found the problem causing the White Dots... Water Column Sensitivity! Since I troll for Stripers and am only interested in fish in the water column, I always have the Water Column Sensitivity set to +3 on all my imaging screens, DI, SI, and Mega 360. I had the thought that this might be contributing to the problem but, when I tested the theory, the reality is that it is 100% what is causing the problem.
I did a test yesterday while traversing along a couple of steep rocky drop-offs from the shoreline to 120' in depth over the width of my SI view. I have attached a screen capture with my test from each of the two shorelines and the results were pretty conclusive.
In the attached SI screen captures, I first had the Water Column Sensitivity set to +3 and had the "dots" on both sides (the bottom portion of the SI views). I then changed Water Column Sensitivity to zero and the image was totally normal (the middle part of the SI view. I then changed the Water Column Sensitivity to -3 and got an even more bizarre image issue with very jagged lines all along the bottom (the top part of the SI view). I'm guessing that you had your Water Column Sensitivity set to +1, +2, or +3 and that is what caused the issue.
I'm going to create a new thread with this issue because I have seen people post about the jagged bottom but I don't know that the issue was ever determined.