🚀 go-pugleaf

In article <1993Jan05.194803.6847@chinacat.unicom.com> chip@chinacat.unicom.com (Chip Rosenthal) writes:
>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>   |

4119's are not made to work with the kind of slow sync freq's that PC's use
they typically run in in the 55KHZ range. And - no, you can't get to the
PC range by just tweaking the pots. The best solution is to find a special
video card that uses a higher freq. sync (non-interlaced) _or_ change
the frequencies about on the video card you have driver source for....the
other thing I've found them quite useful for is on macs with the 8.24 card
they work fine for 1152x980

-- 
Alex P. Novickis, Real Time systems demi-guru.  (W)   408-862-4541
ALINK:alex.n                                    (H)   415-691-0657
UUCP:{amdahl,claris,pyramid,sun,decwrl,well,ubvax,ames}!apn@apple.com,apn@nonvon
"I think... I think it's in my basement. Let me go upstairs and check"-Escher.