Re: Actual 1280x1024_??s.vfo working on any system?

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Simon Mills (simon++at++wgs.estec.esa.nl)
Fri, 02 Jul 1999 09:15:27 +0200

Brian Cooper wrote:
>
> I have compiled several 1280x1024 stereo vfo's using the video format
> compiler but non seem to work on my monitor. I have tried 96 hz and 92
> hz but no avail. Svend Tang-Peterson thought he was able to get success
> at 92 hz (but it sounds like he was not sure in his message to this list
> included below). Can anyone confirm operation at any frequency for this
> large stereo format and if so could you send me your vfo or at least
> your .vfs file so I can compile it myself.

Which stereo vfo works depends on your monitor or display device. Doing
high res stereo demands a high maximum horizontal frequency. For example
I (the Simon mentioned below) was trying the wide 24" monitor that came
with our Onyx iR2. This has a max horizontal freq. of 96kHz (from the
specifications) and the best I managed was a 1280x1024_88s vfo. I'm now
using another (non-wide) monitor which can go up to 107 kHz horiz freq.
with a 1280x1024_96s vfo. This is better since the flicker is
considerably less. I'd really like 1280x1024_120s but that would require
a much more expensive projector & monitor.

If you use the Video Format Compiler it should produce an info file
where you can find amongst other things the required horizontal
frequency ("Line analysis/Frequency"). You can then check this against
your display specifications to see if it will work.

I've attached (gzip'ed tar file) a number of 1280x1024_nns.vfo files for
you to try. Hope it helps.

P.S. I'm curious to know what you're working on since I think we're
working in very similar fields.

> Svend Tang-Petersen wrote:
>
> >Hi Simon.
> >
> >I think the highest I managed to create for my iR2 and the
> 24" monitor
> >was 1280x1024_92 using vfc
> >
> >Unfortunately my machine is on its way to a tradeshow, so I
> cannot send
> >you
> >the file but it's pretty simple to do.
> >
> >--
> >
> >Regards Svend
>
> --
> Brian K. Cooper - Jet Propulsion Lab - Pasadena CA - (818)-354-6298
> brian.cooper++at++jpl.nasa.gov

Regards, Simon
________________________________________________________________________

Simon C. Mills
Modelling & Simulation Section (TOS-EMM) Tel: +31 (0)71 565 3725
European Space Agency (ESA/ESTEC) Fax: +31 (0)71 565 5419
Postbus 299, 2200AG Noordwijk e-mail: simon++at++wgs.estec.esa.nl
The Netherlands http://www.estec.esa.nl/wmwww/EMM
________________________________________________________________________

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