The language in the law is "electronic shutter speed (gating capability)", which I think is the same as the "exposure time." I mean, "exposure" is sort of a misnomer for digital video cameras: the focal plane is exposed to light all the time because there's no shutter. It's just that some of the time it's turned off ("gated"). And when you set the "shutter speed" on a mechanical camera to 1/60, that's the exposure time. You seem to be talking about something slightly different, like maybe the sensitivity rise time?