So yesterday I was driving on RSN towards Finnentrop as a short but extremely heavy freight in the 185.2 as usual with PZB, SiFa and AFB. Had chosen clear weather with a little bit of rain. Suddenly (and I mean suddenly, as in out of nowhere) I hear thunder(?) and my dials start to go crazy, the HUD shows me these red zigzags next to the speed? The problem was cleared by (while still driving at 60-80 kmh) lowering and rising the pantograph, as well as closing the MCB again afterwards. Anyone ever experienced this situation and can clear up what the hell happened?