Signal measured today, filtered with global filter

i have no ideas what the source of the signal was.
do you have any idea?

with best regards
Stefan Savoric

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It looks like your RP shifted position, in a single step, up or down.

Regards
Ken

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Dear Ken,

this is possible, i moved it a little bit now and the signal is this

with best regards
stefan

Here is a related posting:

The big blip - Technical Support - Raspberry Shake