Tiago Agrelos tiagoagre@.........
Sent: Mon, 16 Apr 2012 1:23
Subject: Help on finding natural frequency of a geophone.

I=C2=B4ve small geophone almost a year, but i never knew its natural freque=
ncy, how can i "find" its approximate natural frequency?
The geophone doesnt have anything written on it, its smaller than 4.5Hz L15=
B geophone sold by Larry, generate a lot more output than the 4.5Hz one and=
 i read 380ohm from it.
Tiago.

Hi Tiago,=20

     Check out the geophone sizes and resistances on  http://www.geospacelp=
..com/=20

     Connect the geophone to your seismic recorder and set it to record. Ta=
p the geophone=20
with a pencil and analyse the recorded signal to get the approximate period=
..=20

    Regards,=20

    Chris Chapman






=
Tiago Agrelos tiagoagre@.........

Sent: Mon, 16 Apr 2012 1:23

Subject: Help on finding natural frequency of a geophone.



I=C2=B4ve small geophone almost a year, but i never knew its natural freque=
ncy, how can i "find" its approximate natural frequency?

The geophone doesnt have anything written on it, its smaller than 4.5Hz L15=
B geophone sold by Larry, generate a lot more output than the 4.5Hz one and=
 i read 380ohm from it.

Tiago.




=
Hi Tiago, 


=
 


=
     Check out the geophone sizes and re=
sistances on  http://www.geospacelp.com/ 


=
 


=
     Connect the geophone to your s=
eismic recorder and set it to record. Tap the geophone 


=
with a pencil and analyse the recorded signal to get th=
e approximate period. 


=
 


=
    Regards, 


=
 


=
    Chris Chapman