The ability to assess data applicable to one's specific hunt scenario distances is a confidence builder and I found it very helpful for making my arrow component and arrow variable selections. It was also cool to see the slight distinctions I had with lighter arrows because it showed me how little my speed differed to the heavy arrows which were more aligned with Dr. Ashby's principles. When I looked at my data(I made a spreadsheet) I was able to hone in the arrow weight that was more consistent/balanced/holistic. So, the lighter arrows were of course faster out the gate, but then comparing them to my ideal max penetration distance of 25yds I felt much better about selecting my hunting arrow weight. This assessment also helped me see the momentum factor loss of the lighter arrow(Ranch Fairy shows some great info on why momentum consideration should be a prioritized arrow weight build objective).
And, conversely, my data helped me to see how the heavy arrow I thought was more aligned with the arrow performance principles wasn't as optimal for my system as the arrow weight that had a more holistic/balance of the data variables which better align with terminal arrow performance principles. That might be difficult to apprehend without looking at the numbers, but essentially I looked at arrow speed at all my distance markers and the arrows that had less speed reduction were the one's that I perceive as "holistic/balance". Of course I also considered momentum and grains per pound calculations. I simply knew that my FOC was already above 16% so I let FOC percentage be the icing on the cake once I finished my builds.
In regard to your arrow arc question, I believe the radar array is sufficiently broad enough to accommodate arrow arc, but the shot data baseline begins from the point which your shot takes place. You select the setting on the radar to account for how far away from the radar you are loosing your arrow. From memory I think you shoot 6"-12" next to the radar. There is a wired mic you plug into the radar and attach to your bow. The mic communicates to the radar so it can track/chart your arrow based upon the particular distance settings you have entered prior to your shot: (0yds,5yds, 10yds, 15yds, 20yds). So you set your distance groups at I think it is 5 yard increments. However if you wanted to chart data starting at say 10yds then you would set that as the starting point and enter the distance increment parameter you set on the radar in the settings tab.
I don't recall the max distance, but I think it works more than enough for archery.
They sell different mics/triggers for gun shooting.
Your target path just needs to have a clear path so there isn't interference with the radar array. I hope that paints a clear picture :-D. Manufacturer would benefit from communicating what I just did :-D.
Good thing I didn't do this years ago I might have questioned its effectiveness 
Anyway I was a little surprised at the fps and would have guessed closer to 170.
