(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

 

 

 

Exposure

A

 

 

 

Internal VD

1 Frame = 66.7ms 15FPS

 

Internal Video

A

B

C

D

 

 

VD : 3H = 186us

 

 

 

 

blank : 26 to 27H = 1678us

 

 

Buffer Memory Write

A

 

 

 

DATA transfer

Delay: 1250us

 

 

 

A

 

 

 

(YUV 16bit)

 

 

 

 

 

 

 

 

1Frame = 133.3ms

The highest transmission

 

7.5FPS

 

speed: 136ms

 

External Trigger

Internal HD

1H(cam)=

62us

Frame reset

Internal VD

Exposure

6 to 7H(cam) = 373 to 435us

3H(cam) = 186us

4.0us

21us

Internal Video

Buffer Memory Write

20H(cam) = 1243us

A

Delay: 1250us

DATA transfer

DATA transfer START: 3.0ms

A

 

 

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Image 58
Hitachi HV-F22F, HV-F31F operation manual Delay 1250us Data transfer Data transfer Start 3.0ms