videotaping from the iris

[D. Christopher Dunlap]

In article <22213 at sgi.SGI.COM>, chandlee at alpine.SGI.COM (Chandlee Harrell) writes:
> 
> 
>   Iris 3000s are shipped with two video options.   The two defaults
>   provide video timings for 1280 by 1024 60hz monitors and 640 by 480
>   RS170/NTSC monitors.    A customer can request that the RS170
>   option be replaced with either PAL/SECAM timings or for a 1280 by
>   1024 interlaced 30hz monitor.
> 

2xxx and 3xxx systems have 60Hz, non-interlaced video at 1024 by 768.

The default secondary monitor type is 30Hz, interlaced RGB at 1024 by
768. RS-170 or PAL can be ordered as an option. (No-charge if ordered
with the original system, changing the video types on an existing
system costs a little bit... ask your sales-rep about prices)

>   All Iris 4D systems ship with all four of the above timing options.
> 

4D systems have 60Hz, non-interlaced video at 1280 by 1024. They don't
support the 1024 by 768 of the older systems.


>   When in RS170 mode, the Iris outputs the three components of RGB
>   in the correct RS170 timings, un-encoded.   The bottom leftmost rectangle
>   of 640 by 480 pixels is displayed on the full RS170 monitor screen.


Well, I'm not positive about the 4D, but the 2xxx and 3xxx systems
need to have a Genlock board (CG1) and be sync'd to an external sync
before the output is "correct RS170 timings", assuming that "correct"
is taken to mean "Broadcast Quality".

Anyone interested in more specific timing specifications for the 60Hz
non-interlaced and 30Hz interlaced video (1280 by 1024 or 1024 by 768)
drop me an email and I'll mail it back to you. Enough interest and I
MIGHT post.



There's snow at my mom's house. Maybe I WILL go home for thanksgiving,


chris