8.Features
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 31
Acquisition
Mode
Camera
output
Continuous mode
Continuous Frame
Trigger mode
Trigger Frame
Trigger
1
2
3
4
frame1
frame2
frame3
frame4
frame6
…
…
…
…
frame5
Continuous mode
Continuous Frame
Figure 8-11 Switch trigger mode during blanking
As shown in Figure 8-11, the camera with trigger mode
OFF
begins after receiving an
AcquisitionStart
command.
At point 1, the camera gets a command of setting trigger mode
ON
while it is in wait state. The trigger
mode is not active until the 3
rd
frame is finished, i.e., point 2. Please note that the 3
rd
frame does not belong
to trigger mode. All trigger frames need trigger signals or software trigger commands. At point 3, the
camera gets a command of switching back to continuous mode. It is also not active until the 5
th
frame is
finished, it should wait a complete frame. The camera switches from trigger mode to continuous mode at
point 4, and then the camera works in continuous mode.
8.2.4.
Continuous Mode and Configuration
⚫
Continuous mode configuration
The default value of
Trigger Mode
is
OFF
in default user set. If the camera is opened with default user
set, the camera works in continuous mode directly. Otherwise, user can set
Trigger Mode
to
OFF
to work
in continuous mode.
Other parameters also can be changed in
Trigger Mode OFF
.
⚫
Continuous mode features
In continuous acquisition mode, the camera acquires and transmits images according to camera
parameter set.
In continuous mode, ROI size may have effects on frame rate.
8.2.5.
Software Trigger Acquisition and Configuration
⚫
Software trigger acquisition configuration
The camera supports software trigger acquisition mode. Three steps followed should be ensured.
1)
Set the Trigger Mode to ON.
