Hitachi HV-F31F - Manual (Page 57)

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2. HV-F22F
(1) External trigger operating mode: Mode 0
When external trigger signal is high active,
light pulse begins at the rising edge of the
trigger signal and ends at the falling edge.
At the trigger signal falling edge, the
internal VD signal is reset and the video
data are transmitted.
External Trigger
Internal VD
6 to 7H(cam) = 373 to 435us
Exposure
1H(cam)=
62us
Frame reset
Flash Pulse Output
Internal HD
External Trigger
A
Internal VD 1Frame = 66.7ms 15FPS
Internal Video
A B C D
Buffer Memory Write
Delay: 1250us
A
VD : 3H = 186us
A
1Frame = 133.3ms 7.5FPS
DATA transfer
(YUV 16bit)
The highest transmission
speed: 136ms
Exposure
Flash Pulse Output
Internal Video
Buffer Memory Write
DATA transfer
A
A
Delay: 1250us
DATA transfer START: 3.0 to 5.2ms
3H(cam)=186u s
start : 2 to 2000 us
set 556 ns step
width : select 3 state
(NARROW:30us, MIDDLE:70us, WIDE:270us)
21us 4.0us
blank : 26 to 27H = 1678us
20H(cam) = 1243u s
minimum period = 1V