qCMOS Camera C15550-20UP Instruction manual_Ver.1.0
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11-1-6-2 External trigger mode
The camera has various external trigger functions to synchronize the camera with the external
equipment. In External trigger mode, the external equipment becomes a master and the camera
becomes a slave.
Note
•
Contact a Hamamatsu subsidiary or your local distributor for the detail of the timing information.
(1) Edge trigger mode
The Edge trigger mode is used so that the exposure starts according to an external signal.
Exposure time is set. In this mode, the exposure of the first line begins on the edge (rising / falling)
timing of the input trigger signal into the camera. (0 and 1 (H) in the following figure) The exposure
of the second line is begun after the readout time of two lines passes (3 and 4 (H)), and the
exposure is begun one by one for every two lines.
Figure 11-5 (Ex. rising edge)
* Delay + Jitter = 4H + Maximum. 1H
Standard scan: 1H = 7.2 µs
Ultra quiet scan: 1H = 172.8 µs
