![Daheng Imaging MERCURY2 USB3 Скачать руководство пользователя страница 187](http://html1.mh-extra.com/html/daheng-imaging/mercury2-usb3/mercury2-usb3_user-manual_3255604187.webp)
8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 178
data, if the frame buffer is not full, and there has image frame data in the frame buffer which has not been
send out completely, then before the new image frame is written to the frame buffer, the camera will send
a BlockNotEmpty event to the host, indicating that the previous image has not been send out completely
when the new image is written in the frame buffer.
8.6.4.
FrameStartOvertrigger Event
When the camera receives the FrameTrigger hardware trigger signal or software trigger signal, if the front-
end sensor is exposing, it will not be able to respond to the new FrameTrigger signal, then the camera will
send a FrameStartOvertrigger event to the host. Note that if multiple FrameTrigger signals are received
within one frame acquisition period, the camera will send the corresponding number of
FrameStartOvertrigger events.
8.6.5.
FrameBurstStartOvertrigger Event
When the camera is in FrameBurstStart trigger mode, when it receives an AcquisitionTrigger hardware
trigger or software trigger signal, if the front-end sensor is exposing, it will not be able to respond to the
new AcquisitionTrigger signal, and the camera will send a FrameBurstStartOvertrigger event to the host.
Note that the camera will send the corresponding number of FrameBurstStartOvertrigger events if it
receives multiple AcquisitionTrigger signals during the acquisition period of one frame of image.
8.6.6.
FrameStartWait Event
When the camera is in FrameTrigger mode, the camera starts acquiring images, and if it does not receive
the FrameTrigger signal, the camera will send a FrameStartWait event to the host.
8.6.7.
FrameBurstStartWait Event
When the camera is in the AcquisitionTrigger mode, the camera starts acquiring images. If the camera
does not receive the AcquisitionTrigger signal, the camera sends a FrameBurstStartWait event to the host.
Note that if the FrameTrigger mode is set to on simultaneously with the AcquisitionTrigger mode, the
FrameBurstStartWait event will be sent first. When the camera receives an AcquisitionTrigger signal, it will
send a FrameBurstStartWait event.
8.7.
Sequencer
The Sequencer feature allows you to define sets of parameter settings and apply them to a sequence of
image acquisitions. As the camera acquires images, it applies one sequence set after the other, as shown
in Figure 8-83.
Sequencer0
Exposure
time=10ms
Gain=1dB
Sequencer0
Exposure
time=1ms
Gain=16dB
……
SequencerN-1
Exposure
time=60ms
Gain=8dB
Figure 8-83 Sequencer feature schematic diagram