Adjusting DI brightness on Humminbird
I have a Humminbird 1159CI HD DI that is new to me and I have a question about screen brightness. One of my views is a split screen with 2D sonar on one side and DI sonar on the other side. The brightness of the 2d side is very good but the DI side is very dark. I know that I can adjust overall screen brightness by pressing the power button one time and then pressing "Light" then changing the overall screen brightness but I can't find where to make the adjustment to change the DI brightness.
Any help you can offer will be appreciated.
Charlie