Information about Units, how to Convert Them?

[nr34zu14]

Hi!

My Raspberry Shake is running now for some weeks and is collecting data. I also installed the SWARM software and looked at the collected data.

In the diagrams I read “counts”, but I couldn’t find any explanation about this unit. To understand the data better, I would like to know how I can convert the data into a well known unit like m/s.

Where can I find more information about the units displayed in SWARM and how can I convert the shown units into other ones?

Best,
Tobias

[iannesbitt]

Hi Tobias, the following post may help you:

RS4D Geophone "Counts"

Hi Ezra, “Counts” are basically a measurement of the voltage recorded on the geophone circuit. So yes, they are a way of measuring the energy of shaking. If you are viewing the station by connecting to the community data server, you can go to “wave settings” and then check the “Use calibrations” box. This will tell Swarm to use the instrument response data on the server to convert counts to velocity/acceleration units when viewing data. [image]

[nr34zu14]

Hi!

Thank you for the reference. I tried to do this, checked this box, but I can not see any difference.

It still just shows counts…

Best,
Tobias

[iannesbitt]

I think this is because you are viewing your Shake data locally (i.e. you are not forwarding data). When you forward data, our server generates a response file based on your instrument specifications, and that response file is what Swarm uses to convert counts to real-world units. Once you turn your data forwarding on, you will have access to your station via the RS Community server, which will allow using calibrations.