[visionlist] CRT monitor solutions

Sol Simpson sol at sr-research.com
Wed Nov 11 03:00:14 PST 2009

Hi Michael,

We used the BBTK (http://www.blackboxtoolkit.co.uk/) to test the timing
using photo sensors and TTL outputs from our Experiment Builder program to
test both absolute timing ( i.e. is it really running at 120 Hz) and
relative timing (i.e. does the start of a physical screen update match when
Experiment Builder software says it is starting). 

It would be great if someone else could also do some empirical tests on
these monitors to validate our findings.



-----Original Message-----
From: Michael Bach [mailto:Michael.Bach at uni-freiburg.de] 
Sent: November-11-09 5:50 AM
To: Sol Simpson
Subject: Re: [visionlist] CRT monitor solutions

Dear Sol:

> There are true 120 hz LCD monitors available now: 
> Samsung 2233RZ
> ViewSonic VX2265wm
> ...

Thank you for this information, excellent! How were you able to unearth the
information that they do not have internal frame buffering, is this
advertised by the manufacturers? It doesn't say so on their sites, nor in
the user manuals.

Anyway, thank you very much! 
Best, Michael
Prof. Michael Bach PhD, Ophthalmology, University of Freiburg, Killianstr.
5, 79106 Freiburg, Germany.
President of ISCEV <http://www.iscev.org/>
Visual illusions:  <http://www.michaelbach.de/ot/>

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