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Article #1371

Can a Sun/Hitachi display run RGB-HV instead of RGB-S

#1371
From: Chip Rosenthal
Date: Tue, 05 Jan 1993 19:48
26 lines
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I have a Hitachi HM-4119-S-AA-0 20" monitor that came on a SPARCstation
1.  We upgraded the monitor on that system, and I'm trying to recycle
the Hitachi onto a peecee.

Unfortunately, I cannot get the display to sync up.  Whether I'm in
8514A graphics mode or dumb VGA text mode, I just get a screenful of
jittery colors.

My hypothesis is that the monitor is setup for a four-connector RGB-S
(composite sync signal), and the peecee adapter uses seperate vertical
and horizontal syncs (e.g. a five-connector RGB-HV cable).

There are five BNCs on the back of the display, and I'm assuming that
fifth BNC isn't just there for looks.  Hitachi dropped me like a ton
of bricks as soon as I said the model number and sent me over to Sun.
Sun told me that the monitor works just fine with their products, and
would be perfectly happy to see me throw it in the dumpster.

Can anybody help?  Does my theory on the sync signals sound correct?
If so, does anybody know if it's possible to reconfigure the monitor?
Alternately, are there any devices that will generate the appropriate
signals from a peecee video adapter output?
-- 
Chip Rosenthal  512-482-8260 | Ergonomic (adj) - Designed to ensure
Unicom Systems Development   | maximum discomfort in left-handed people.
<chip@chinacat.Unicom.COM>   |
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From: chip@chinacat.unicom.com (Chip Rosenthal)
Subject: Can a Sun/Hitachi display run RGB-HV instead of RGB-S
Organization: Unicom Systems Development, Austin, TX
Date: Tue, 05 Jan 1993 19:48:03 GMT
Message-ID: <1993Jan05.194803.6847@chinacat.unicom.com>
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