Hv-F22Cl / Hv-F22Cl-S1 - Hitachi HV-F31CL Operation Manual

2. HV-F22CL / HV-F22CL-S1

(1) Pre-select exposure mode: Mode 0
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.
(Note) Exposure setting has following 2 types.
(a) Preset exposure mode
Exposure delay A: 2 us to 263.96 ms (Variable)
Flash pulse width B: 6 us / 46 us / 246 us (Selectable)
(b) Variable exposure mode
Exposure delay A: 2 us (Constant),
Flash pulse width B: 4 us to 263.96 ms (Variable)
43
External Trigger
minimum period = 1V
Exposure
A
Flash Pulse Output
Internal VD
Internal Video
VD : 3H = 186us
blank : 26 to 27H = 1678us
DATA transfer
External Trigger
Internal HD
Internal VD
6 to 7H(cam) = 373 to 435us
A
Exposure delay A
Exposure
4.0us
Flash Pulse Output
Internal Video
DATA transfer
DATA transfer START: 1.75 to 266.0 ms
1Frame = 66.7ms 15FPS
A B C
A
1H(cam)=
62us
3H(cam)=186us
Frame reset
21us
Flash pulse width B
B
20H(cam) = 1243us
D
A