Hi Jón,

This is what you need to do to ground the shield of your cable. Take a piece of wire 
and remove the insulation on both ends. Remove enough insulation on one end so you 
can wrap several turns of the wire around the shield of the CAT-5 cable. Then use 
some tape to hold the wire to the cable. The other end of the wire should goto one of 
the ground terminals already connected up to the sensor. Either one of the three 
ground terminal screws can be used. The ground terminal screw is the one nearest the 
edge of the PC board. Looking at you picture, it looks like you have a blue wire 
connected to ground on channel one. This is where you also want to connect up the new 
ground wire.

Hope this helps.

Regards,
Larry Cochrane
Redwood City, PSN

Jón Frímann wrote:
> Hi
> 
> I have this type of amplifer board.
> 
> http://seismicnet.com/serialamp.html
> 
> 
>> ? Neither of Larry's boards usually have screw connectors? The boards
>> usually have phono connectors. The outside ring with two solder
>> connections is the 0V line.
> 
> I did order the amplifer board with terminal block screws.
> 
> 
>> Do you have an electric / electronic measuring meter? 
> 
> No. I am just starting in this hobby, it takes me a time to buy all the
> hardware I need for this. I also have limited amout of money to use in
> this, so it is going to take long time for me.
> 
> Here is a picture of my hardware. I have colored wire near the edgde and
> the two color wire (color / white) on the inner connection, I haven't
> tested reversing them. I have really limited space, that is why the
> setup is so bad. 
> 
> http://www.simnet.is/jonfr500/p6060002.jpg
> 
> Regards.

__________________________________________________________

Public Seismic Network Mailing List (PSN-L)