So I've had my kmax for months, almost a year, and there was always only 7 menu options as should be. But suddenly today there's an 8th option there. I had changed the battery and was clicking through the menu when I saw it. It says something that looks like 8.NA and you can toggle between what looks like NEA and ANS. It was set on NEA. Any clue what this is? The N's look more like upside down U's. I was thinking maybe it's an option to switch between mean and rms, but I know for a fact this 8th menu was never there before today.