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From: Julian Vrieslander on 11 Apr 2008 16:39
I'm looking for a simple data acquisition interface that will run on a
Linux PC (Fedora Core 6). The requirements are very simple: 24 bits of
digital output. We need to be able to flip single bits or groups of
bits without causing glitches on unchanged bits. Data rate is slow -
maybe one write every 2 milliseconds.

Google shows that there are some simple USB-based DAQ interfaces that
might work for this application. I'm wondering if anyone here can
recommend a particular vendor. It would be nice if the product comes
with end-user support and easy-to-understand documentation, since the
people who will be installing and maintaining this system are
biologists, not computer geeks.

--
Julian Vrieslander
From: Joerg on 11 Apr 2008 16:52
Julian Vrieslander wrote:
> I'm looking for a simple data acquisition interface that will run on a
> Linux PC (Fedora Core 6). The requirements are very simple: 24 bits of
> digital output. We need to be able to flip single bits or groups of
> bits without causing glitches on unchanged bits. Data rate is slow -
> maybe one write every 2 milliseconds.
>
> Google shows that there are some simple USB-based DAQ interfaces that
> might work for this application. I'm wondering if anyone here can
> recommend a particular vendor. It would be nice if the product comes
> with end-user support and easy-to-understand documentation, since the
> people who will be installing and maintaining this system are
> biologists, not computer geeks.
>

http://www.labjack.com/labjack_u3.php?prodId=52

Can be stacked. Works. Got one right here and some at clients. I do not
use Linux but I believe there are drivers for it, just check the site.
They also have a forum for Linux users.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
From: david on 11 Apr 2008 21:51
On Fri, 11 Apr 2008 13:39:07 -0700, Julian Vrieslander rearranged some
electrons to say:

> I'm looking for a simple data acquisition interface that will run on a
> Linux PC (Fedora Core 6). The requirements are very simple: 24 bits of
> digital output. We need to be able to flip single bits or groups of
> bits without causing glitches on unchanged bits. Data rate is slow -
> maybe one write every 2 milliseconds.
>
> Google shows that there are some simple USB-based DAQ interfaces that
> might work for this application. I'm wondering if anyone here can
> recommend a particular vendor. It would be nice if the product comes
> with end-user support and easy-to-understand documentation, since the
> people who will be installing and maintaining this system are
> biologists, not computer geeks.

National Instruments makes good-quality hardware, and excellent software
support.
From: Joerg on 12 Apr 2008 12:27
david wrote:
> On Fri, 11 Apr 2008 13:39:07 -0700, Julian Vrieslander rearranged some
> electrons to say:
>
>> I'm looking for a simple data acquisition interface that will run on a
>> Linux PC (Fedora Core 6). The requirements are very simple: 24 bits of
>> digital output. We need to be able to flip single bits or groups of
>> bits without causing glitches on unchanged bits. Data rate is slow -
>> maybe one write every 2 milliseconds.
>>
>> Google shows that there are some simple USB-based DAQ interfaces that
>> might work for this application. I'm wondering if anyone here can
>> recommend a particular vendor. It would be nice if the product comes
>> with end-user support and easy-to-understand documentation, since the
>> people who will be installing and maintaining this system are
>> biologists, not computer geeks.
>
> National Instruments makes good-quality hardware, and excellent software
> support.


And it helps to have a bank account similar to Rockefeller's ...

--
SCNR, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
From: Julian Vrieslander on 13 Apr 2008 03:53
Thanks to David and Joerg for the replies. I'll check into both NI and
Labjack.

I was aware of the NI products, but a bit hesitant about buying from
them. It's not their pricing. I do a lot of work with Macs, which they
used to suppport quite well. But a more recent attempt to get
assistance with an NI card in a Mac was less rewarding. Their attitude
to Mac users now seems to be "Use LabView or don't call us...".

Maybe their support for Linux is better.

--
Julian Vrieslander
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