Are you saying that the Dish 6000 outputs a negative polarity? (I've got a Barco too and was wondering)
At this point, unless someone else tells me differently, I would have to assume so. Both my DISH and ExpressVu receivers work perfectly with my projector (which is a highly modified Harman DPM8)but neither my DTC 100 or my GI HDD200 sync up. So, I'm assuming based on what others are telling me, that I'm dealing with a sync polarity problem.
I picked up an ExpressVu 6000 HDTV decoder yesterday (same hardware as the Dish 6000 box) and it works fine with my BarcoGraphics 800! No special sync inversion circuitry required!
I used a HD15 -> 5BNC cable from the 6000 directly into the Barco with the H and V sync BNC's combined with a T-connector. I didn't try it without combining the syncs.
I'm not sure if this helps make it work, but since I need this for my GeForce2 HTPC output, I figure I would try the HDTV box this way first as well. Now all I need is a good quality 2-1 VGA switcher with autoswitching and I'm set!
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