videotaping from the iris
Stephen King
king at client2.dciem.dnd.ca
Sat Nov 5 06:49:18 AEST 1988
In article <8811020355.aa14353 at SPARK.BRL.MIL> phil at BRL.MIL (Phil Dykstra) writes:
> [...] You get the lower left hand corner of the screen
>(~640x480 pixels).
I must confess, I am somewhat confused by this. Admittedly, we have not run
our IRIS at NTSC rates for some time, but I am sure that such S/W as the
ARCH demo produced a full screen. Could it depend on the model ? (ours is
an old 2400)
> [...] Why is because the SGI
>board outputs a fully positive video signal (i.e. blanking is around
>+0.3V) rather than a bipolar signal with blanking at 0VDC.
Have you tried AC coupling the thing with some large capacitors? :-)
--
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Stephen J King =-= DCIEM Human Factors Division =-= (416) 635-2149
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