Image Acquisition Control AW00089317000
128 Basler ace GigE
7.8 Overlapping Image Acquisitions -
(Global Shutter Models)
Valid for All Models with Global Shutter
Except acA1280-60, acA1920-25, acA2500-14
acA1300-60 and acA1600-60: Only valid if they are operated in the global shutter mode
The frame acquisition process on the camera includes two distinct parts.
The first part is the exposure of the pixels in the imaging sensor.
Once exposure is complete, the second part of the process – readout of the pixel values
from the sensor – takes place.
In regard to this frame acquisition process, there are two common ways for the camera to operate:
with “non-overlapped” exposure and
with “overlapped” exposure.
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 exposure
for a new frame does not overlap the sensor readout for the previous frame. This situation is
illustrated in Figure 67 with the camera set for the trigger width exposure mode.
The acA1300-60 and acA1600-60 cameras can only realize overlapped image
acquisitions in the global shutter mode if they are operated in the free run mode;
that means:
the acquisition start trigger is set to off,
the frame start trigger is set to off and
the acquisition mode is set to continuous
As soon as the sequencer is enabled, overlapping image acquisition is
automatically disabled.
Frame Acquisition N
Exposure Readout
Frame Acquisition N+1
Exposure Readout
Frame Acquisition N+2
Exposure Readout
Time
ExFSTrig
Signal
Fig. 67: Non-overlapped Exposure and Readout
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