Re: Genlocking...

New Message Reply Date view Thread view Subject view Author view

Rob Jenkins (robj++at++quid)
Thu, 24 Oct 1996 10:35:09 -0700

On Oct 24, 6:03pm, knoepfle++at++igd.fhg.de wrote:
> Subject: Genlocking...
> Hy everybody,
>
> this is not a performer-question, but I don't know a better a place...
>
> We want to use Shutter-Stereo on a 3-Pipe ONYX IR (format: 1024x768_120s). We
> get the stereo-sync from Pipe 0. When you wear your stereo-glasses the
picture
> on Pipe 0 is ok, but on pipe 1 and 2 we see a horiz. dark bar [shutter signal
> doesn't correspond to vertical sync of the pipe].
>
> It seems that we have to genlock(!) all three pipes. We tried several ways,
but
> none of them really worked.
>
> Does anyone of you know how to do
> a) the cabeling
> b) configuration via ircombine [unfortunatelly we can't use setmon, because
it
> crashes on pipe 1 and 2 :(]
>
> to genlock all three pipes ?
>
> Any help is highly appreciated...
>
> Thanks in advance
>
> Christian
>
> PS: If you know a better place to ask, please tell me...

I had some info from a colleague on this recently, I'll pass it on. I think you
need to check you have patch 1355 installed as it fixes some stereo genlock
things, the cabling should be something like:

                IR IR IR
                #1 #2 #3
H/C Sync o-\ o o
Genlock in o \-o /-o
Genlock out o o-/ * 75ohm terminate

To set up genlock in ircombine, insert appropriate channels, click on edit
globals, set sync source to be external and select sync format to be
whatever format you are trying to genlock to (in this case 1024x768_120s). Then
either download the format or save to eeprom. With 1355 installed, gfxinfo
should return whether gfx thinks it is genlocked or not.

If you want to control this programmatically, check out the XSGIvcextension (X
SGI video control), specifically XSGIvcSetScreenInputSyncSource.

Hope this helps
Rob

-- 
________________________________________________________________
Rob Jenkins robj++at++csd.sgi.com
Silicon Graphics, Mtn View, California, USA
=======================================================================
List Archives, FAQ, FTP:  http://www.sgi.com/Technology/Performer/
            Submissions:  info-performer++at++sgi.com
        Admin. requests:  info-performer-request++at++sgi.com

New Message Reply Date view Thread view Subject view Author view

This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:53:48 PDT

This message has been cleansed for anti-spam protection. Replace '++at++' in any mail addresses with the '@' symbol.