The Display Development website is out of date. They know this and it's on the list.
Model numbers have changed apparently, the HD6 was an LED- that device is no longer available.
I'll attach the spec sheets for the HD5 and HD6
HD5.pdf 464k .pdf file
HD6.pdf 465k .pdf file
I'm currently working on the image through the Lumagen- since I can control more through Calman that way. I have not yet measured the contrast- I'm still trying to tweak until I'm happiest- then I'll measure.
I wonder if 10k:1 is possible unless you blow out the whites and run the lamp balls-out and then clamp the crap out of black....not sure, but as time passes I'll let you know.
There is a 9 step optical aperture. manual