Hitachi HV-F22F Operation Manual page 58

(2) External trigger operating mode: Mode 1
When external trigger signal is high
active, after the trigger signal rise, the
flash signal start/end can be set to
determine the flash time.
At the flash signal falling edge, the
internal VD signal is reset and the video
data are transmitted.
Trigger pulse width > 65us
External Trigger
(High active)
minimum period = 1V
A
Exposure
Internal VD
Internal Video
VD : 3H = 186us
blank : 26 to 27H = 1678us
Buffer Memory Write
DATA transfer
(YUV 16bit)
External Trigger
1H(cam)=
62us
Internal HD
6 to 7H(cam) = 373 to 435us
Internal VD
Exposure
4.0us 21us
Internal Video
Buffer Memory Write
DATA transfer
1 Frame = 66.7ms 15FPS
A B
A
Delay: 1250us
A
1Frame = 133.3ms The highest transmission
7.5FPS
Frame reset
3H(cam) = 186us
20H(cam) = 1243us
Delay: 1250us
DATA transfer START: 3.0ms
C D
speed: 136ms
A
A
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