TAAC and Dunn/Matrix camera on long lines
Peter G. Ford
pgf at space.mit.edu
Wed Jan 18 14:25:42 AEST 1989
I, too, run a Sun/260C with TAAC and Dunn/Matrix Multicolor, and have
experimented with various cable extensions. Anything longer than the
cable supplied by Sun seems to cause some ghosting, but the severity
varies with the configuration, specifically:
* The sequence Sun->Taac->Multicolor->Monitor is a better impedence
match than Sun->Taac->Monitor->Multicolor. The DC resistance really
doesn't make any difference. It's the impedences within the video
bandwidth that must match.
* High-quality 75 ohm cable makes a difference. Use the best.
* Make sure that each of the 4 R-G-B-S cables is the same length.
Please let me know how this works out. I'd like to extend my own monitor
cable to about 50', but haven't found a really satisfactory solution yet
myself.
Peter G. Ford Inet: pgf at space.mit.edu
MIT Center for Space Research UUCP: ..!mit-eddie!space!pgf
Cambridge, MA 02139 Span: MITCCD::PGF
+1 617 253 6485 Gte: [PFORD/JPL/NASA] NASAMAIL/USA
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