Photon Focus MV8-D8424-G01-GT, User Manual, Page: 133 / 139

C.2 Timer
9. The required PixelFormat must be set.
10. AcquisitionMode must be set to Continuous .
11. The software command AcquisitionStart() must be applied.
It might be necessary to adjust the polarity of the Line0 input signal. This can be done by the
parameter
LineInvert
in the section DigitalIOControl.
C.1.5 Trigger controlled exposure mode
The exposure time can be controlled by an externally applied trigger signal on LineIn input.
The following configuration procedure shows how to set the camera in the trigger controlled
exposure mode:
1. Parameter ExposureMode must be set to TriggerControlled .
2. The TriggerMode of ExposureStart and ExposureEnd trigger must be set to On . The
AcquisitionStart , FrameStart and FrameBurstStart trigger must be set to Off .
3. The TriggerSource of the ExposureStart trigger must be set to Line0 .
4. The
TriggerActivation
of the
ExposureStart
trigger must be set to
RisingEdge
.
5. The
TriggerSource
of the
ExposureEnd
trigger must be set to
Line0
.
6. The TriggerActivation of the
ExposureEnd
trigger must be set to
FallingEdge
.
7.
TriggerDelay
and
TriggerDivider
of the
ExposureStart
and
ExposureEnd
trigger must be set
accordingly.
8. The required image Width and Height must be set.
9. The required PixelFormat must be set.
10. AcquisitionMode must be set to Continuous .
11. The software command AcquisitionStart() must be applied.
C.2 Timer
There are four general purpose timers available. The following sections show some use cases,
how the timers can be used.
C.2.1 Strobe Signal Output
The timer can be used to generate a pulse with a certain width on the LineOut output together
with every exposure cycle in order to control an external light. The following procedure shows,
how to configure one of the timer for this purposes:
1. Select one of the four available timers by setting of the TimerSelector to Timer0 , Timer1 ,
Timer2 or Timer3 .
2. Select the timer trigger source. Set TimerTriggerSource to ExposureStart .
3. Parameter TimerTriggerActivation can be ignored. This configuration is only necessary,
when Line0 input is selected as a trigger source.
4. Configure the necessary TimerDuration value and the TimerDelay value.
At this stage, the configured timer generates a pulse of a certain width and after a certain
delay every time, when a new exposure cycle starts, which is indicated by the internally
available
TimerActive
status. This signal must be connected to the camera LineOut output,
which can be done in the DigitalIOControl section:
MAN094 03/2021 V1.0 133 of 139