C11440-10C Ver.1.2
9-5 EXTERNAL CONTROL MODE
The camera has various external control functions to synchronize the camera with the
external equipment. In the external control mode, the external equipment becomes a master
and the camera becomes a slave.
9-5-1
EDGE TRIGGER MODE
The edge trigger mode is used so that the exposure is synchronized with an external signal.
9-5-1-1
Normal edge trigger mode
The normal edge trigger mode is used so that the exposure starts according to an external signal.
Exposure time is set by software commend. In this mode, the exposure of the first line begins on
the edge (rising/falling) timing of the input trigger signal into the camera. (0H in Figure 9-5) The
exposure of the second line is begun after the readout time of one line passes (1H in Figure 9-5),
and the exposure is begun one by one for each line. The example timing chart below shows a
rising edge trigger.
Figure 9-5
9-5-1-2
Global exposure edge trigger mode
The global exposure edge trigger mode is used when imaging with a pulsed light source such as
pulsed laser or flash lamp. The exposure time can be set by software command. In this mode,
the camera combines the frames right before and after the global exposure trigger signal
(falling/rising edge) into one frame and output them as one frame of data. The exposure time of
this second frame can be set by software command. Minimum value of exposure time setting is
about 22 ms (1 frame readout time).
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