Karl,

Attachments are not allowed on the PSN-L list, this is how viruses get =
passed around. If you have access to a web or ftp server you can place =
your file on that system and send us the URL. If you don't have access =
to a server, send me the file and I will place it on my system and send =
out a message to let members know the location of the file.

-Larry Cochrane
Redwood City, PSN
  ----- Original Message -----=20
  From: Karl Koth=20
  To: PSN-L@.................
  Sent: Wednesday, March 05, 2003 5:13 PM
  Subject: Adjustment Help


  Hello,

  I have just built and setup a Lehman design seismometer. I built it =
for my school science fair, so keep in mind when replying that I am not =
in tune to all of the technical stuff. My questions have to do with =
adjusting the seismometer to record correctly.

  Attached is a sample of the data that I am currently getting. I was =
wondering if I need to damp more or if I need to turn down the gain or =
adjust the offset. I am using Larry Cochrane's Amp/Filter board and his =
16 bit A/D converter board. I have also read about changing the period =
length, but I am not sure how to change it. Any help getting this data =
to look right would be appreciated.=20

  thank you,







Karl,
 
Attachments are not allowed on the =
PSN-L list, this=20
is how viruses get passed around. If you have access to a web or ftp =
server you=20
can place your file on that system and send us the URL. If you don't =
have access=20
to a server, send me the file and I will place it on my system and =
send out=20
a message to let members know the location of the =
file.
 
-Larry Cochrane
Redwood City, PSN

  
----- Original Message ----- 
  From:=20
  Karl =
Koth=20

  
To: PSN-L@.............. 
  
Sent: Wednesday, March 05, 2003 =
5:13=20
  PM
  
Subject: Adjustment Help
  


  
Hello,
  
 
  
I have just built and setup a Lehman =
design=20
  seismometer. I built it for my school science fair, so keep in mind =
when=20
  replying that I am not in tune to all of the technical stuff. My=20
  questions have to do with adjusting the seismometer to record=20
  correctly.
  
 
  
Attached is a sample of the data that =
I am=20
  currently getting. I was wondering if I need to damp more or if I need =
to turn=20
  down the gain or adjust the offset. I am using Larry Cochrane's =
Amp/Filter=20
  board and his 16 bit A/D converter board. I have also read about =
changing the=20
  period length, but I am not sure how to change it. Any help getting =
this data=20
  to look right would be appreciated. 
  
 
  
thank you,
  
Karl =
Koth