WITHROBOT oCam-1CGN-U-T, Руководство пользователя, Страница: 10 / 24

oCam-1CGN-U-T User Manual
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Figure 7. Trigger input circuit
Trigger Signal Specifications
The camera acquires image at the falling edge of the trigger signal. Depending on the trigger
signal, the camera operates in one of the 3 modes described as follows.
One Shot Mode
With this mode, the camera acquires one frame of image. The trigger signal should maintain the
low level at least 1 msec(T1).
Figure 8. One shot mode
Multi Shot Mode
With this mode, the camera acquires multiple frames of images. The interval between the two
adjacent trigger pulses should be at least 2 msec (T2). To get images as specified by the trigger
signal frequency, it is needed to set the camera speed at least twice the trigger signal frequency.
If the camera speed is set below this, the trigger signal will be applied while the previously
acquired image frame is being transmitted. For example, to apply 30 Hz trigger signal, the
camera should be set at least 60 fps.