Control the Uniblitz shutter using StreamPix script language.
A Typical script could be the following: Capture 1 image every 30 images:
CustomAction(1) - open shutter
SkipFrame(2) - skip 2 frames until the shutter fully drops
GrabFrame(1) - capture
CustomAction(0) - close shutter
SkipFrame(27) - skip remaining 27 frames