8.Features
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 75
1) From the start of the timer to the full output of Timer1Active, this process will not be
interrupted by the ExposureStart signal, and Timer1Active must be completely output to start
timing according to the next ExposureStart signal. As shown in the figure below, the red
ExposureStart signals are ignored.
TimerDelay
Timer1
Timer1Active
TimerTriggerSource
ExpsoureStart
TimerDelay
ExpsoureStart
Figure 8-54
The relationship of Timer1Active and ExposureStart signal
2) After the acquisition is stopped, the timer is immediately cleared and the Timer1Active signal
goes low immediately.
8.3.20. Counter
The camera only supports one counter (Counter1), which can count the number of FrameTrigger,
AcquisitionTrigger and FrameStart signals received by the camera. The counter starts counting from 0.
You can select one of the above three signals to count by CounterEventSource. The FrameTrigger and
AcquisitionTrigger signals of the counter statistics refer to the signals that have been triggered for filtering
without a trigger delay.
If CounterValue is enabled, the statistical data can be inserted into the frame information and output with
the image.
The counter can be reset by an external signal. The reset source is selected by CounterResetSource.
Currently, the CounterResetSource option supports Off, SoftWare, Line0, Line2, and Line3. Among them,
Off means no reset, SoftWare means software reset, Line0, Line2 or Line3 means reset through IO port
input signal. The polarity of the reset signal only supports RisingEdge, which means reset the Counter on
the rising edge of the reset signal.
Counter configuration:
1. Set CounterSelector, currently only Counter1 supported.
2. Set CounterEventSource, the values that can be set are FrameStart, FrameTrigger, AcquisitionTrigger.
3. Set CounterResetSource, the values that can be set are Off, SoftWare, Line0, Line2, Line3.
4. Set CounterResetActivation, currently only RisingEdge supported.
1) After the acquisition is stopped, the Counter continues to work, will not be cleared, and it will
be cleared when the camera is powered off.
2) CounterReset is used to software reset the counter.
