qCMOS Camera C15550-20UP / C15550-20UP01 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).
* Delay + Jitter = 4H + Maximum. 1H
Standard scan: 1H = 7.2 µs
Ultra quiet scan: 1H = 172.8 µs
