AW00118508000 Acquisition Control
Basler racer Camera Link 75
Fig. 25: Extension of Exposure N+1 After the Illegal Attempt of Ending It Too Early; Applies to Trigger Width
Exposure Mode Only
6.2.1.2 Regular Line Acquisition Avoiding Overtriggering
As mentioned above, you can avoid overtriggering by applying an acquisition-related trigger only
when the camera is waiting for it.
You can achieve this goal by
making use of acquisition monitoring tools, i.e. monitoring the camera’s acquisition status and
triggering only when the camera indicates that it is in the "waiting status" for the trigger or by
strictly obeying timing limits for exposure and triggering.
Using Acquisition Monitoring Tools
To get informed whether the camera is waiting for a trigger you can use the acquisition monitoring
tools described in Section 6.3 on page 80.
By applying an ExLSTrig signal as soon as the camera indicates that it is waiting for an ExLSTrig
signal you can operate the camera in "overlapped mode" without overtriggering.
As an example, and in the context of overlapped exposure, the use of the line trigger wait signal is
described in Section 6.3.3 on page 82 for proper triggering with the line start trigger. Both timed and
trigger width exposure mode are considered.
Line Acquisition N
Exposure Readout
Line Acquisition N+1
Exposure
Readout
Time
ExLSTrig
Signal
The exposure is ended with the next valid
attempt to end it.
The ExLSTrg Signal goes low too early because
readout of the previous acquisition is not yet
finished. An overtrigger will be reported.
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