A first look at the data showed some problems with electric noise. It seems that the mains power supply a huge noise signal in our data. I have to run some more tests, why the noise is so dominant at the two installation sites. I the lab, I have never recorded such a high noise level.
It seems that I have to invest some more time into shielding the complete system. The most tricky part will be to determine how the noise enters the Ruwai system.
SEISROCKHT · RUWAI