From: Lawrence Bertoldi (lberto++at++sgi.com)
Date: 01/19/2001 10:39:54
The Swap Ready is simply connected between each pipe using a "T" connector
where needed!
The "Genlock" and "Swap Ready" use 75ohm cable and the Genlock cable
needs to be terminated with a 75ohm terminator!
connect the "Horizontal Sync" from the pigtail to pipe 0 "Genlock In"
and dazy chain the other pipes using "Genlock Through/Out" to "Genlock In"!
IMPORTANT::
1: If you are connecting more then 4 pipes you may need a
video distribution amp to ensure a strong enough signal.
2: Genlock cables should be as short as possible!
in ircombine under "Edit globals", pipe 0 (your pipe with the pigtail on it)
should be set to internal and all other pipes are set to external sync.
the "channel attributes" "sync Output" field for pipe 0 defaults to
"composite" with green as the "Sync Component". This should be ok
but you may need to be set to "Horizontal"
Peter Oslej wrote:
> Hello Max,
>
> thank you for answer. Please see my details bellow and enclosed gfxinfo
> :
>
> ----- Original Message -----
> From: Max Waterman <maxw++at++sgi.com>
> To: Peter Oslej <peterO++at++vrm.sk>
> Sent: Thursday, January 18, 2001 5:46 PM
> Subject: Re: Onyx genlocking
>
> > Peter Oslej wrote:
> > >
> > > Hello all,
> > >
> > > I still remember performer-info mail exchange about genlock
> synchronisation
> > > Onyx's pipes last year.
> > > Now we are facing the same problem. We have to run 4 channels
> application
> > > on 2 pipes Onyx2 with
> > > continuous screen. We have done :
> > >
> > > 1. Pipe 0 is connected by 13W3+2BNC adaptor and coax cable (55 Ohm )
> to
> >
> > I'm not sure what the impoedence of the cable should be, but it should
> all
> > be terminated with a 75 ohm terminator, so I suspect the cable should
> be
> > 75 ohm too.
> >
> > > Pipe1 to Genlock IN connector.
> > > (13W3+2BNC adaptor has lable 018-0834-002 Rev. A , but coax
> cable
> has to
> > > be connected by H sync BNC connector !! ;
> >
> > OK, you have the more modern pig-tail cable, which has the sync's
> labelled
> > correctly.
> >
> > > by V sync BNC is not able to syncronize the second pipe)
> >
> > How do you detetmine that it isn't sync'd? You should be able to syn
> > the pipes with the V sync, but you'll (obviously) only sync every
> vsync).
> > If you make the H connector output a composite sync (H+V) then you'll
> > sync to both, which is fine too. You can alter what comes out of the H
> > with ircombine. You *need* to have it as H-sync only if you're running
> > stereo vfo's.
> >
>
> I have set SyncOutput to Composite by ircombine. When I connect to V
> sync,
> Pipe 1 is not running ,it is black...
>
> > >
> > > 2. With /usr/gfx/ircombine we set external source for pipe 1. Pipe
> 1 is
> > > running genlocked with pipe 0. /usr/gfx/gfxinfo -vv
> > > says : Source : External Genlocked : True (Should be
> genlocked)
> >
> > Yup, that should be definitive. If it says it's genlocked, then it
> should
> > be. I haven't heard of gfxinfo being wrong.
> >
> > >
> > > 3.We run perfly -G town.pfb (G means gangdraw ); When pipes are not
> > > genlocked , performer warns about
> > > shifting phase between pipes when running multipipes apps , now
> after
> > > genlocking is silent -> pipes should be genlocked.
> >
> > perfly just does some measurements, which can be inaccurate. Pay
> attention
> > to gfxinfo rather than perfly output.
> >
> > >
> > > BUT runnig perfly the image on the edge bettween pipes is
> jumping,
> > > skipping .... -> pipes do not swap the same buffer on the same
> > > time . Why ?
> >
> > What vfo's are you running? What combination? Send us the output of
> > gfxinfo (withouth -vv).
>
> See enclosed gfxinfo.
>
> For what purposes is SwapReady connector ?
> Should I connect it on pipes ?
>
> PfPipeWindows man pages in the "Gang Swap" section says about second
> condition :
> connecting SwapReady connector on pipes with " simple BNC cable of any
> Ohms."
> I try this , but no changes (still skipping )
>
> Thanks forward
> Peter Oslej
>
> >
> > >
> > > Can somebody help me ?
> >
> > Yes, this is what customer support is for. Please call us.
> >
> > Thanks.
> >
> > Max.
> >
> > >
> > > Thank you
> > >
> > > Peter Oslej
> > > VRM Ltd.
> > > Slovakia
> > >
> > >
> -----------------------------------------------------------------------
> > > List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
> > > Open Development Project: http://oss.sgi.com/projects/performer/
> > > Submissions: info-performer++at++sgi.com
> > > Admin. requests: info-performer-request++at++sgi.com
> >
> >
>
> ------------------------------------------------------------------------
> Name: Gfxinfo
> Gfxinfo Type: unspecified type (application/octet-stream)
> Encoding: quoted-printable
-- See Ya,Lawrence Eugene Bertoldi Technical Consultant vnet 238-8949 Silicon Graphics phone 301-572-8949 Silver Spring MD. email lberto++at++clubfed.sgi.com
~;-}>
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