C13440-20CU / C13440-20CU01 Instruction manual_Ver.1.3
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11-1-6-3 Start trigger mode
Start trigger mode is to start operating the camera by a trigger input for a continuous imaging. It is
useful to secure the frame rate as fast as possible when continuous image acquisition and not to
sacrifice the exposure time. For example, when it is necessary to measure the phenomenon after
stimulation, it is possible to start continuous image acquisition at the stimulation timing.
Start trigger mode is to start operating the camera by a trigger input for continuous imaging, and it
works at the highest frame rate because it is operated in internal trigger mode. In Start trigger mode,
the camera starts exposure and switches to internal trigger mode by the edge of an external trigger
signal (rising / falling edge).
Figure 11-11 (Ex. rising edge)
11-1-6-4 External trigger delay function
In most cases when a delay between the laser pulse emission and the exposure start is needed, a
delay unit is set between the laser and camera to control trigger timing. In each external trigger mode of
the camera, the delay can be set to the trigger signal input to the camera by command. With this setting,
a range of trigger can be arranged without a delay unit. The range for delay time is 0 µs to 10 s (1 µs
steps).
0H
1H
・
・
1023H
1024H
.
.
2046H
2047H
Sensor readout
Camera Link data output
USB 3.0 data output
Global exposure timing output
Exposure
Trigger ready output
(Camera Link)
Trigger ready output
(USB 3.0)
External trigger
＊
Exposure is 100 ms or shorter: There is invalid readout of 1 frame
Exposure is 100 ms or longer
：
There is Delay of 100 ms
＊
Internal exposure time setting
