[visionlist] analog-to-digital converter

[Ian M. Andolina]

On 12/12/2012 01:37, Watson, Andrew B. (ARC-TH) wrote:
> We are looking for an inexpensive USB-based analog-to-digital converter solution for use in display measurement in a vision lab.
> We would like something with appreciable range (12 bits) and speed (10 KHz) and an API for the Apple Mac OS X.
> Any advice, solutions, or experience in this regard would be appreciated.
> If there are sufficient responses, we will post a summary to the list.
After sampling different options, for me the clear favourite device is 
made by LabJack:

http://labjack.com/

Their hardware (U3 or U6) is robust (12-22bit @ 50Khz) and reasonably 
priced, and they have a robust set of open source driver options for OS 
X (exodriver, LJFuse). More than anything, because they are a small 
company they are extremely responsive to support questions and 
suggestions for software. I've use the U6 for digital I/O to Plexon 
neurophysiology hardware from Psychtoolbox, but there is an analog class 
for generic Matlab code available too:

http://forums.labjack.com/index.php?showtopic=5901

The PTB wiki page for the LabJack:

http://psychtoolbox.org/LabJack

Ian

>
> -Beau
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