Photron FASTCAM ultima APX-i2, Руководство по оборудованию

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FASTCAM-ultima APX-i2 Hardware Manual
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In the RANDOM RESET mode, on the other hand, the record timing signal (vertical
sync) is reset by the trigger input and restarts working from that point. By resetting the
vertical sync at the trigger, we now know exactly the temporal relationship between the
trigger input and start of recording of the first frame. It is a known fact that it takes 100
ns from the input of a trigger signal to reset of the vertical sync signal, i.e. start of
recording.
Note: Technically, there is a slight time lag between the record timing (vertical sync)
and start of exposure, which is dependant on the framing rate being used (7.4 us
at 2,000 fps).