18 Jan
2016
18 Jan
'16
7:51 a.m.
What is the exact model number of the video card?
I am assuming it's an HP98204 of some flavour. The HP98204A uses (US, RS170) TV rates
and
can be connected to any composite monitor that expects that. A lot of TVs (rather than
monitors)
in Europe can accept that and have composite inputs still, perhaps on a SCART socket.
However the more normal video card in the 9000/217 (aka HP9817) is the HP98204B. This
does
have a composite output but at rather odd rates. There was a specal 'HP'
(actually a Samsung
chassis, and it shows!) monitor for this. I thinkl finding somethng that will lock to the
video output
of that card is going to be 'interesting'
Do you have the original HP monitor? If so, what model is it?
-tony
Hi Tony,
indeed this machine has a 98204B video board (intended to work with a 35721 monitor, which
I don't have). I have not yet found the specs for its composite signal.
I find many $20 converters/scalers for composite to VGA on amazon or ebay but I am not
sure whether such a thing would work for me. Obviously they seem to work for many computer
games (SNES, Nintendo) and for some hobby computers like C64, Amiga etc. (e.g. "RCA
Composite AV S-Video to VGA Converter Box").
Next I see $50 devices like "Mini Composite RCA CVBS AV To HDMI Converter (Input: AV;
Output: HDMI)" which may also be an option, but only seem to scale to a fixed HDMI
resolution, which may be unsuitable for the HP-resolution of 512x400 (or 512x390?).
Finally I see $200 converters/scalers which are a bit expensive just for trying to see
whether they work (e.g. "Atlona AT-AVS100 Composite/S-Video to Component/VGA
Scaler").
I have also contacted Jon from the HP-Museum to see what their solution is.
Regards,
Martin