clock drift issue
 
 
 
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Posted 12/15/2006 2:56:35 PM
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Last Login: 12/15/2006 4:35:06 PM
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I just installed E-Prime 2.0 BETA on my desktop, which is a Compaq Presario (AMD Atholon(tm) 64 Processor, 3200+, 2.21 GHz, 1.87 GB of RAM, with Windows XP).  I am running a paradigm with avi video files.  The files are 2 s long with a randomized interstimulus interval between 5-11 s.  My paradigm runs, but once completed, the E-run prompts me with the following error:

WARNING: Clock.SystemTimeDrift exceeds threshold value.  Data from this run may not be usable.  Contact PST tech support to determine diagnosis of this clock drift issue.

I looked on the web support site and it advises individuals to contact PST to receive a utility that can detect the best clock for experiment data collection.  Can anyone help with this?

Post #111
Posted 12/15/2006 4:39:13 PM
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I've corrected the problem.  I thought I post the solution that worked for me in case others have a similar problem.  I installed DirectX 9.0c (a free download online) and now my experiment runs without the time shift.  A couple of the videos do not play the beginning few milliseconds, but other than that, the timing is corrrect. 
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