Hi,
you can use Larry's serial board with the laptop.
If you need something more little you can give a look to

http://www.infoeq.it/doc04_e.htm

it is a 4 channels board but it requires 10V dc 
power supply and a preamplifier.

This board runs with SEISMOWIN.

Or, you can use the David Saum's board that can be used
with SEISMOWIN or AMASEIS.


Regards
Mauro

----- Original Message ----- 
From: "BOB BARNS" 
To: 
Sent: Tuesday, December 24, 2002 4:30 PM
Subject: Re: Subject: Vertical sensors


> Allan,
>   Windows could probably run the recording program in the background.
> This requires that the computer be left running 24/7 which, even without
> the monitor takes a fair amount of AC power.
>   I looked around in ebay.com and discovered that there are many laptops
> (requiring less power) for $125 or less.  A few bucks more will get a
> considerably better machine.
>   I looked for laptops which had at least Windows, 96K of RAM and some
> means of reloading Windows (3.1 is good enough) and programs-either a
> floppy drive or CD-ROM drive (if only one, a floppy drive).  A
> monochrome screen is good enough (although I'm not sure that Windows is
> useable with monochrome).
> A working hard-drive is not necessary as a lot of 'quake data can be
> stored on a floppy if the sampling rate is kept low.  A laptop will not
> accept Cochrane's excellant A/D board so an external A/D and some
> program other that SDR) would be necessary.
>   If you go this way, be sure to get the computer's manual.
> Bob Barns
> 
> allan egleston wrote:
> > 
> > hi My name is Allan Egleston, and am new to the list. Am currently
> > building a horizontal lehman sensor at this time. Have been reading the
> > mail about Vertical sensors and it seems that there is a number to
> > choose from.  A question for the group, can there be a way to record
> > events with out having to tie up a computer, as this seems to be the
> > accepted norm?  Thanks, Allan Egleston, kf6uxj
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