Re: Genlocking Sirius and Monitor

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Orad Hi-Tec Systems (orad_u++at++netvision.net.il)
Thu, 24 Oct 1996 07:57:59 +0300

Hal Bertram wrote:
>
> IR + Sirius + Onyx + 6.2
>
> Not really a performer question, but...
>
> Could someone please explain very clearly how to create a combination that
> produces a monitor output and a sirius output that are both locked to an
> external source? I've tried the obvious ch1 + sirius + external sync (in edit
> globals) - it produces bad frames on the sirius. Presumably the genlock should
> go to the BOB and the Onyx? What is the external sync format really for?
>
Don't know what its for, but it should be
768x576_25i for PAL
640x486_30i for NTSC

Also, be sure to patch up to 1355 for gfx, 1431 for Sirius.
Otherwise, you'll be in SGI iR+Sirius debugging phase (vs. product phase).
Also check your hardware is up to date via /usr/gfx/gfxinfo -v
The DG "Part #" should end with -004 or larger.
Also the DGOPT (alias PAB) "Part #" should end with -004 or larger.

> Also on the Sirius, on RE2, flicker filter does what you would think, but on IR
> it also vertically shrinks the image by about 4% producing nasty banding,
> degrading the image rather than improving it.
>

Strange, didn't notice that.

> Many thanks for any help,
>
> Hal
>
> P.S. If there is an info-sirius elsewhere I'll happily go and ask there...
>

Yes, its called
trial+error+trial+error+trial+error+trial+error+trial+error+trial+error+trial+error...

Moshe Nissim
Orad Hi-Tec Systems
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