AIDA snout was reconnected and we saw originally a very good reduction in noise from S452 (fig 1)
Occasional bursts of increased rates were noticed, perhaps related to works in S4.

Tape rate at optimal conditions was around 6 MB/s
We still saw some extrinsic noise in waves, two frequencies observed : 1.5 MHz and 100 kHz or so

Figs 2, 3 are at 50 MS/s
Figs 4, 5 are at 5 MS/s

Today the situation has become a lot worse for reasons still unknown.
aida01 shows very strong noise, frequency 125 kHz or so it seems (still at 5 MS/s)
Amplitude 100 mV or so I think

Investigation still underway