Actually the Factory board has 3 power levels and within each power level are three settings for the GCU to interpolate settings for the gun.
In the HeliBoard there are 12 power levels and 20 settings within each power level, spaced about 10 bar apart.
The new HeliBoards have an Auto Calc feature where within a power level you choose a high, medium, and low pressure, set your gun to shoot the desired speed at each of those 3 points, then the Auto Calc gesture will set all other set points automatically. Pretty cool.
For example if 170 bar is the lowest pressure that my gun will shoot King Heavy at 940 fps, I would choose that as my low and get the correct settings by shooting. Then I’d go to say 210 bar, do the same thing, then 260 bar and again do the same. Now I select Auto Calc and it automatically sets all pressure set points every 10 bar to achieve your desired speed.
You can do this for all 12 power levels independently if you wish.