GPS timestamping works

Ruwai in sync

One very important feature of a seismograph is the timestamping of the sampled data to an absolute time reference. The most important a global time reference is the GPS time and I'm using it to correctly timestamp the samples of the Ruwai data recorder. A test with another seismic data recorder of a different type shows that it is working.

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.

2016-03-25 RUWAI