8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 126
8.2.
Image Acquisition Control
8.2.1.
Acquisition Start and Stop
8.2.1.1.
Acquisition Start
It can send AcquisitionStart command immediately after opening the camera. The acquisition process in
continuous mode is illustrated in Figure 8-5, and the acquisition process in trigger mode is illustrated in
Figure 8-6.
Continuous Acquisition
Exposure
Reading out
Start Status
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Figure 8-5 Continuous acquisition process
In continuous mode, a camera starts to expose and read out after receiving the AcquisitionStart command.
The frame rate is determined by the exposure time, ROI and some other parameters.
Trigger Acquisition
Exposure
Reading out
Start Status
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…
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Trigger
Figure 8-6 Trigger acquisition process
In trigger mode, sending AcquisitionStart command is not enough, a trigger signal is also needed. Each
time a frame trigger is applied (including software trigger and hardware trigger), the camera will acquire
and transmit a frame of image.