Did you ever get this figured out?

It looks like the same issue I had a couple of weeks ago. Your side image range is set to 40 and your DI chart is stopping at 40. Bump your side imaging range up and it'll change your DI.

Since the helix 7 is so small I dropped my side imaging range to 20 feet hoping I'd be able to see the fish better and my DI went blank at 20 feet but half way down the screen like yours is doing. I'm not sure if this is how it's supposed to work or if it's a glitch.

Mike