Kevin,

I have to admit that the thought had crossed my mind, but Dave assured me 
that they were connected as advertised.  In fact, I could confirm that to 
some degree, as the DC offsets were quite different.

Brett


At 03:19 PM 9/11/2009 +0100, you wrote:


>You have checked that you haven't connected both channels to the same 
>sensor? :)
>

Watch our wiggles
http://bnordgren.org/seismo/gif_images.htm

or watch some very very good wiggles
http://aslwww.cr.usgs.gov/Seismic_Data/telemetry_data/ANMO_24hr.html


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