I’m currently preparing the Ruwai recorders for their first deployment in the field. I did some long-term tests and tested the timestamping of the sampled data by comparing the Ruwai seismograms with data sampled by other recorders. Everything is looking good.
The following image shows the comparison with a SARA SL06 data recorder. The differences in the waveform in the image below results from different geophones connected to the two data recorders.