J=F3n,


At the risk of talking too much, I'm going to repeat what several others
have noted about wiring for your geophones.


There are two unused wires in the cable assembly. The ends of these two
wires should be brought to the ground on the board -- just as you did =
for
the shield.


Don't forget that properly soldered joints are also critical factors for
reducing outside interference.


-Tim-

Timothy Carpenter
5043 Whitlow Court
Commerce Township, Michigan 48382

-----Original Message-----
From: psn-l-request@.............. [mailto:psn-l-request@............... =
On
Behalf Of J=F3n Fr=EDmann
Sent: Wednesday, June 07, 2006 11:16 AM
To: psn-l@..............
Subject: Re: spike problem

Hi

I haven't seen any spikes for last 24 hours. So I think this spike
problem has been fixed. I only had to connect the shield to the ground
in the amplifer board. Only noise I see now is normal culture based
noise.

Regards.
--=20
J=F3n Fr=EDmann
http://www.jonfr.com
http://www.simnet.is/jonfr500/earthquake/

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