PSN-L Email List Message
Subject: Re: Modified sound card and datalogging and geophones
From: ian ian@...........
Date: Tue, 19 Jul 2005 15:48:04 +0100
hold the phone, as they say. If the budget has suddenly gone up from $0
then have a look at this:
This is a USB DAQ from National Instruments. It comes with the student
(you may need an academic address for that?) version of labview and data
loging software... It's around $150.
> Sorry, not sure why i received this letter from you.
> The subject matter is interesting though.
> I have found a prarie Digital A/D converter
> model 40-12 connected through COM1 DB25 or DB9
> connector the best way to receive seismic signals
> but it requires some complex programming to
> make it work.
> It is not cheap also.
> It would be so nice to use the sound card so long
> as it will go to DC but if it does not then
> you need to use frequency translation of some type
> to make it work for you. Making for a more complex
> and expoensive circuyit to deal with. It just seems best to either
> build your own
> A/D Converter or to put oyt about $200 for one
> already built that you can program yourself.
> Your email came to me through the junk folder so it was
> screened out as spam.
> ----- Original Message ----- From: "Mike Speed"
> To: "PSN Mailing List"
> Sent: Monday, July 18, 2005 11:30 AM
> Subject: Modified sound card and datalogging and geophones
>> I installed some larger-capacitance-value coupling
>> capacitors on my 24-bit sound card so I could resolve
>> lower frequencies. What is a good datalogging app to
>> use with this?
>> Also, I put out a request for geophones and got one
>> response and never heard anything back. I am looking
>> for geophones - tell me about what you have -
>> dimensions - frequency, etc., and how much you want
>> for them.
>> Do You Yahoo!?
>> Tired of spam? Yahoo! Mail has the best spam protection around
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