Hitachi Kokusai Electric HV-D27A Operation Manual page 48

3-ccd color camera
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Note: Prohibited period of the external trigger pulse timing
For each external trigger mode, when the end edge of external trigger pulse is input in the prohibited
period (shown in the under figure), the picture is not output after the SYNC reset.
Please input the repetition period of trigger pulse with the following specification, to avoid the trigger
input to an above prohibited period.
The period of the next end edge trigger pulse from the previous end edge of trigger
CCD MODE: FLD, except from nV to nV+2H
CCD MODE: FRM, except from 2nV to 2nV+2H
(V: a vertical synchronous period, n: an integer)
EXTERNAL TRIGGER
CAMERA SYNC
ed period of the end edge of external trigger pulse
Prohibit
(1H period before the start of camera V SYNC)
34
nV
SYNC reset tim ing
Next SYNC Reset tim ing

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