# Raspberry shake clipping out

Hello!
I have 2 raspberry shakes at the same place, and im evaluating how much noice goes up to a cabin that is above a raspberry shake:
Shake in ground:
https://dataview.raspberryshake.org/#/AM/RCF68/00/EHZ

Shake in cabinet:

Now i am thinking about buying a shake 3d and having that in the cabinet aswell somewhere else.
But i was thinking about when the shake will clip out. As we can see now, the shake that is in the cabinet has a value of 1.5 M^^S. Can i have a 3d shaker that manage the levels of that or am i best off with the already bought 4d shake?
https://dataview.raspberryshake.org/#/AM/RCF68/00/ENN

Question nr 2. There is an arrow on the shake that has an error and N ---->, is that the ENN value? and the ENE is side to side?

Where can i read up more on seismology?

1 Like

Regarding your first question: I would say that this is a practical example of geophone (weak motion detection) clipping vs accelerometer (strong motion detection) non-clipping: https://twitter.com/GeoGinger/status/1426580715416825861/photo/1

Clipping happens a bit above/below Â±0.02 M/S for a geophone. You can explore this by going here Data View: Raspberry Shake Data Visualization Tool and selecting August 14th, 2021 as a date.

The event at ~12:29 UTC is clearly clipped on the `EHZ` (geophone) channel, but is not on the `EN*` (accelerometers) channels.

For your question #2: The arrow is required as our 3D and 4D models have to be oriented with the arrow pointing towards the North, so that the horizontal geophones/accelerometers (North-South and East-West) can detect waves in the correct orthogonal orientation. So, as you correctly said, ENN will be along the NS axis, and ENE will be along the perpendicular EW axis.

There are a lot of threads on the forum about general knowledge: Notes on how I use my Raspberry-shake but I also encourage you to check our Educational resources: https://edu.raspberryshake.org/ and the pages from the old IRIS (now EarthScope Consortium): Education and Public Outreach | IRIS