Never mind. Answered my own question. It has motorized iris control with full auto, shutter priority, and iris priority.
In looking at the sample videos, there's a lot that can be done to tune this if you want good number plate capture. Set auto gain to max, close iris to about f4, decrease exposure compensation which will overall darken the image some, and then increase shutter until auto gain maxes out. I did this on my much cheaper SNC-VB635s (which only run about $1K) and get great license plate images at night in color and it's a much smaller sensor on only full hd.
@tech101, it's been about 18 months since this thread had activity. Have you tuned the camera further? How's it working out?