In a message dated 03/06/2006, jonfr500@......... writes:

The  spike problem still exist


Hi Jon,
 
    What length of cable in m are you using to connect  the geophones to the 
amplifier board?
 
    Does the cat5 cable have a single bare wire inside  the aluminised 
screen? It should have four tightly twisted pairs of insulated  wires.
 
    Regards,
 
    Chris Chapman






In a message dated 03/06/2006, jonfr500@......... writes:
<=
FONT=20
  style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size=
=3D2>The=20
  spike problem still exist

Hi Jon,
 
    What length of cable in m are you using to conn=
ect=20
the geophones to the amplifier board?
 
    Does the cat5 cable have a single bare wire ins=
ide=20
the aluminised screen? It should have four tightly twisted pairs of insulate=
d=20
wires.
 
    Regards,
 
    Chris Chapman