AW00089317000 Image Acquisition Control
Basler ace GigE 131
7.9 Overlapping Image Acquisitions -
(Rolling Shutter Models)
Valid for
acA1280-60, acA1920-25, acA2500-14
acA1300-60 and acA1600-60: Only valid if they are operated in the rolling shutter mode
When using a camera with a rolling shutter, there are two common ways for the camera to operate:
with “non-overlapped” acquisition and
with “overlapped” acquisition.
In the non-overlapped mode of operation, each time a frame is acquired the camera completes
the entire exposure/readout process before acquisition of the next frame is started. The acquisition
of a new frame does not overlap any part of the acquisition process for the previous frame. This
situation is illustrated in Figure 70 with the camera using an external frame start trigger.
The acA1280-60, acA1300-60, acA1600-60 cameras can only realize overlapped
image acquisitions if they are operated in the free run mode; that means:
the trigger mode is set to off (acquisition start trigger/frame start trigger),
the acquisition mode is set to continuous.
If the sequencer feature is enabled, overlapping image acquisition is automatically
disabled.
Frame Acquisition N Frame Acquisition N+1 Frame Acquisition N+2
= Line Exposure
= Line Readout
Time
ExFSTrig
Signal
Fig. 70: Non-overlapped Acquisition
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