41
Trigger operation and timing chart
External trigger refer to a function for picking up
rapidly moving objects by applying a trigger pulse
input. It is possible to pick up an image with
various timing.
1. HV-F31CL / HV-F31CL-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)
External Trigger
Internal VD
6 to 7H(cam) = 253 to 295us
Exposure
1H(cam)=
42us
Frame reset
Flash Pulse Output
Internal HD
External Trigger
A
Internal VD
1Frame =
33.3ms
30FPS
Internal Video
A
B
C
D
A
VD : 3H=
126us
DATA transfer
Exposure
Flash Pulse Output
Internal Video
DATA transfer
A
DATA transfer START:
0.85 to 265.1ms
3H(cam)=126us
Exposure delay A
Flash pulse width B
30us
4.0us
blank : 18 to 19H =
801us
12H(cam)=506us
minimum period = 1V
A
B