8.Features
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 38
It can send
AcquisitionStart
command immediately after opening the camera. The acquisition process in
continuous mode is illustrated in Figure 8-10, and the acquisition process in trigger mode is illustrated in
Figure 8-11.
Continuous Acquisition
Exposure
Reading out
Start Status
…
…
…
…
Figure 8-10 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
…
…
…
…
…
…
Trigger
Figure 8-11 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 external trigger), the camera will acquire and
transmit a frame of image.
8.2.1.2. Acquisition Stop
It can send
AcquisitionStop
command to camera at any time. The acquisition stop process is irrelevant
to acquisition mode. But different stop time will result in different process, as shown in Figure 8-12
and
