PSN-L Email List Message

Subject: Re: HS-10 manual
From: "Andreas Tschammer" psn@............
Date: Sun, 2 Dec 2007 23:05:13 +0100


thank you very much for doing this test! Your findings confirm my decision
to (try) to return
it to the dealer. He is on holidays now, so communication is somewhat slow.
He has a second HS-10, maybe he will test this one with the simpler 100 k
resistor test for
linearity. But I expect a similar result..
Maybe I should reactivate my VBB project instead. I tried to reproduce a
very compact
VBB design (inv. pendulum) from a scientific journal with a small mass
(~50g) and blumelein bridge  capacitive
displacement sensor. It worked quite well for the small size. I could see
the 6s microseisms clearly and
a ~6 quake in Papua NG. But I had some mass drift problems and lost my
interest in it.



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