PSN-L Email List Message

Subject: Re: Adjustment Help
From: "Larry Cochrane" cochrane@..............
Date: Wed, 5 Mar 2003 20:59:02 -0800


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

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