Start Trigger Mode; External Trigger Delay Function - Hamamatsu Photonics C11440-22C Insctruction Manual

C11440-22C Instruction manual_Ver.1.4

10-5-4 START TRIGGER MODE

The start trigger mode is used 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. Example, when it is necessary to measure the
phenomenon after stimulation, it is possible to start continuous image acquisition at the
stimulation timing.
The start trigger mode is used 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
the 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 10-9 (Ex. rising edge)

10-5-5 EXTERNAL TRIGGER DELAY FUNCTION

In most case 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 time can be set to the trigger signal input to the camera by
commands. Therefore, a range of trigger can be arranged without a delay unit. The setting range
for delay time is 0 µs to 10 s (10 µs steps).
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