PSN-L Email List Message

Subject: Re: spike problem
From: =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= jonfr500@.........
Date: Sun, 04 Jun 2006 17:12:39 +0000


It has two componment inside the cable, the shield has wires and it also
is silver type skin over the actual cat-5 wires.

> What length of cable in m are you using to connect the geophones to
> the amplifier board?

I use 15 meters. It is the minmal lenght I can use.

> This difficulty in doing this may be that it is already grounded at 
> some other point (say, through the computer power plug), so that 
> adding this second ground contact will produce what is called a
> ground 
> loop.

I hope that doesn't happen. The shield is not connected to the amp board
it self or to the geophone.

Jón Frímann


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