Re: Sync specs for Sun screen

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Article #3104

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#3104

From: james d lockwood
Date: Sat, 03 Jan 1998 00:00

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Craig Dewick (craig@zeta.org.au) wrote:
> In <slrn69sdj6.b4l.sbirn@softworx.netvision.net.il> sbirn@NOSPAM.bofh.org.il (Steve Birnbaum) writes:

> >I've got a Sun screen, model GDM-17E10 according to the back panel. 
> >I want to use this with XFree86 under FreeBSD.  From what I've heard,
> >it is possible to do this, but I just need to create the correct 
> >modeline in the config file.

> >Does anyone have the specs for this screen (it is sync-on-green, right?)
> >or even better still, the modeline for XFree86?

> Sun's colour monitors use combined H/V sync as a seperate output to the
> three colour gun drive signals.

This is correct...

> The video frequencies are 62.75 KHz horizontal, and 66 Hz vertical.

This is incorrect.  The "low-frequency" Sun standard is close (61.8KHz,
66Hz) but the GDM-17E10 only does the two higher frequency modes:
71.81KHz horizontal, 76.14Hz vertical, and 81.13KHz horizontal, 76.11Hz
vertical.

I found this out the hard way when I tried to connect it to the cg6 on my
old 4/330 (which only did the 61.8KHz mode).

-James

=============================================================================
James D. Lockwood                             The Getty Information Institute
System Administrator                       1200 Getty Center Drive, Suite 300
james@gii.getty.edu                                Los Angeles, CA 90049-1680

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From: jdl50630@huey.csun.edu (james d lockwood)
Subject: Re: Sync specs for Sun screen
Date: 1998/01/03
Message-ID: <34addacd.0@130.166.1.64>
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References: <slrn69sdj6.b4l.sbirn@softworx.netvision.net.il> <68k9tf$eff$1@godzilla.zeta.org.au>
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