That was cool.
When the scope reached approx. 30km altitude, the screen was no longer visible. I assume that this is due to the extremely cold temperature causing the battery output to be too low to keep the scope on. It didn't appear to be depleted since it was fine after being turned back on after landing.
So, apart from the obvious marketing aspects, what was the purpose of the scope during this flight? A protocol decoder acting as a single-line text display?