Return-Path: Received: from mailrelay1.lrz-muenchen.de (mailrelay1.lrz-muenchen.de [129.187.254.106]) by lxmhs09.lrz-muenchen.de (8.12.5/8.12.3/SuSE Linux 0.6) with ESMTP id l0P7A0eK010384 for ; Thu, 25 Jan 2007 08:56:21 +0100 Received: from lxmhs06.lrz-muenchen.de (lxmhs06.lrz-muenchen.de [10.156.6.203]) by mailrelay1.lrz-muenchen.de with ESMTP for Hans.Strasburger@lrz.uni-muenchen.de; Thu, 25 Jan 2007 08:56:19 +0100 X-Virus-Scanned: by amavisd-new at lrz-muenchen.de in 06 X-Spam-Score: 3.604 X-Spam-Level: *** X-Spam-Status: No, score=3.604 tagged_above=-999 required=5 tests=[AWL=0.103, BAYES_99=3.5, HTML_MESSAGE=0.001] Received: from mailrelay2.lrz-muenchen.de ([10.156.6.1]) by lxmhs06.lrz-muenchen.de (lxmhs06.lrz-muenchen.de [10.156.6.203]) (amavisd-new, port 10024) with ESMTP id KDEWudicCinb for ; Thu, 25 Jan 2007 08:56:17 +0100 (CET) Received: from lawton.ewind.com (lawton.ewind.com [68.166.223.203]) by mailrelay2.lrz-muenchen.de with ESMTP for Hans.Strasburger@lrz.uni-muenchen.de; Thu, 25 Jan 2007 08:56:16 +0100 Received: (from majordomo@localhost) by lawton.ewind.com (8.9.3/8.9.3) id XAA28022; Wed, 24 Jan 2007 23:03:59 -0800 Message-Id: <200701250703.XAA28022@lawton.ewind.com> From: "Max Snodderly" To: , Subject: CVNet - summary of CRT info Date: Wed, 24 Jan 2007 22:11:22 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01C74004.952FE7A0" X-Mailer: Microsoft Office Outlook, Build 11.0.6353 Thread-Index: AcdANt8CSz4Mhr4eQ+SL1yD6uOUtPw== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Sender: owner-cvnet@lawton.ewind.com Precedence: bulk This is a multi-part message in MIME format. ------=_NextPart_000_0000_01C74004.952FE7A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Thanks to the many colleagues who offered information and advice on the status of fast CRT displays. Here is a summary of some of the most pertinent comments on color displays: There are 3, 21 inch models currently being sold that have specs that are attractive. However, there are doubts whether they actually reach the maxima that are listed. This is dependent on specifics of the video signals, so if anyone has been able to squeeze more performance out of these units, the rest of the community would be grateful to know how to do it. Some other comments relevant to timing are offered at the end of the message. Hopefully, by sharing information we can save each other some work, leaving time for the more interesting problems. ******************************************************************* NEC lists model AS120-BK, frame rate 200 Hz, resolution 640 x 480. Frank H. Durgin [fdurgin1@swarthmore.edu] has tested it and reports the following: I bought one of the NEC AS120-BK monitors after searching on the web for a 200 Hz CRT. Although the specifications available on the web indicated 188 Hz is possible, mine came in a box indicating that 160 Hz is the highest refresh possible. Indeed, when I use SwitchResX to ask higher refresh rates, a message comes on the monitor indicating that the signal is out of range. The message goes on to say that it will only accept vertical frequencies up to 160 Hz. The peak horizontal frequency it says it will accept is 96 kHz. It seems to be telling the truth. Perhaps someone else knows a way to fool it. NEC tech support expressed surprise and finished by suggesting I might be able to "clamp" the monitor using the on-screen menus, but I see nothing called "clamp", nor anything else likely to work. The image quality is good for their presets (800 x 600 @ 120 Hz and 640 x 480 @ 160 Hz). I created a setting of 720 x 540 that looks good @ 150 Hz. At 800 x 600 I think you could get close to 150, but I'd recommend about 144 Hz. Frank Durgin PS It's not exactly a flat screen either. NEC: Not Even Close ******************************************************************** ViewSonic lists model G225fB, frame rate 160 Hz, resolution 800 x 600 Yury Petrov [y.petrov@neu.edu] has tested this one and he reports: ViewSonic G225f recommended settings are 1600x1200@85Hz. It goes up to 1024x768@150Hz, and it looks good with Nvidia GeFource 7900 GT. But it won't work at higher frequencies even for 800x600. ********************************************************************* Samsung lists model Syncmaster 1100MB, frame rate 160 Hz, resolution 800 x 600? Hans Irtel has one of these and he might check it out if others are interested [irtel@psychologie.uni-mannheim.de] ********************************************************************* A couple of other timing issues were noted. Adam Reeves reported that some color phosphors do not decay as rapidly as others. If doing a fast color shift this can give rise to a potential luminance artifact that needs to be avoided. If anyone has current information on the phosphor decay rates or how to trace back to the suppliers of the phosphors, some list members would like to know it. Mickey Rowe cautioned that running at high frame rates raises the risk of dropped frames, which is dependent on your control hardware. Michele Rucci and Fabrizio Santini integrate a photocell monitor into their system to guard against dropped frames and eliminate contaminated data. Max Snodderly Professor, Human Ecology/ Nutritional Sciences and Institute for Neuroscience 1 University Station/ A2700 The University of Texas Austin, Texas 78712 Office: (512) 232-3307 Cell: (512) 922-8777 Fax: (512) 471-4661 email:max.snodderly@mail.utexas.edu ------=_NextPart_000_0000_01C74004.952FE7A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Thanks to the many colleagues who offered information and advice = on the status of fast CRT displays. 

Here is a summary of some of the most pertinent comments on = color displays:
There are 3, 21 inch models currently being sold that have specs that = are attractive. 

However, there are doubts whether they actually reach the maxima = that are listed.  This is dependent on specifics of the video signals, = so if anyone has been able to squeeze more performance out of these units, the = rest of the community would be grateful to know how to do it.  =

Some other comments relevant to timing are offered at the end of = the message. 

Hopefully, by sharing information we can save each other some = work, leaving time for the more interesting = problems.

 

*****************************************************************= **

NEC lists model AS120-BK, frame rate 200 Hz, resolution 640 x = 480. 

 

Frank H. Durgin [fdurgin1@swarthmore.edu] has tested it and = reports the following:

I bought one = of the NEC AS120-BK monitors after searching on the web for a 200 Hz = CRT.

Although the specifications available on the web indicated 188 Hz is possible, mine = came in a box indicating that 160 Hz is the highest refresh possible. =

Indeed, when I = use SwitchResX

to ask higher = refresh rates,  a message comes on the monitor indicating that the signal = is out of range.

The message = goes on to say that it will only accept vertical frequencies up to 160 = Hz.

The peak = horizontal frequency it says it will accept is 96 kHz.

It seems to be = telling the truth. Perhaps someone else knows a way to fool = it.

 

NEC tech = support expressed surprise and finished by suggesting I might be able to "clamp" the monitor using the on-screen menus, but I see = nothing called "clamp", nor anything else likely to = work.

 

The image = quality is good for their presets (800 x 600 @ 120 Hz and 640 x 480 @ 160 = Hz).

I created a = setting of 720 x 540 that looks good @ 150 Hz.

At 800 x 600 I = think you could get close to 150, but I'd recommend about 144 = Hz.

 

Frank = Durgin

 

PS It's not = exactly a flat screen either.  NEC: Not Even = Close

 

*****************************************************************= ***

ViewSonic lists model G225fB, frame rate 160 Hz, resolution 800 = x 600

 

Yury Petrov [y.petrov@neu.edu] has tested this one and he = reports:

 

ViewSonic G225f recommended settings are 1600x1200@85Hz. It goes = up to 1024x768@150Hz, and it looks good with Nvidia GeFource 7900 GT.  =

But it won't work at higher frequencies even for = 800x600.

 

*****************************************************************= ****

Samsung lists model Syncmaster 1100MB, frame rate 160 Hz, = resolution 800 x 600?

 

Hans Irtel has one of these and he might check it out if others = are interested  = [irtel@psychologie.uni-mannheim.de]

 

*****************************************************************= ****

A couple of other timing issues were = noted.

Adam Reeves reported that some color phosphors do not decay as = rapidly as others.  If doing a fast color shift this can give rise to a = potential luminance artifact that needs to be avoided.  =

If anyone has current information on the phosphor decay rates or = how to trace back to the suppliers of the phosphors, some list members would = like to know it.

Mickey Rowe cautioned that running at high frame rates raises = the risk of dropped frames, which is dependent on your control hardware.  =

Michele Rucci and Fabrizio Santini integrate a photocell monitor = into their system to guard against dropped frames and eliminate contaminated = data.

 

 

 

Max Snodderly

Professor, Human Ecology/ Nutritional = Sciences

and Institute for Neuroscience

1 University Station/ A2700

The University of Texas

Austin, Texas 78712

Office: (512) 232-3307

Cell: (512) 922-8777

Fax: (512) 471-4661

email:max.snodderly@mail.utexas.e= du

 

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