GigE VA Series User Manual page 37

In the Trigger Overlap – Readout mode of operation, the exposure of a new frame begins while the camera is
still reading out the sensor data for the previously acquired frame. Figure 8.8 illustrates the Trigger Overlap
parameter set to Readout and the Exposure Mode parameter set to Trigger Width.
Determining whether your camera is operating with overlapped or non-overlapped exposure and readout is not a
matter of issuing a command or switching a setting on or off. Rather the way that you operate the camera will
determine whether the exposures and readouts are overlapped or not.
If we define the "Frame Period" as the time from the start of exposure for one frame acquisition to the start of
exposure for the next frame acquisition, then:

Non-overlapped:

Overlapped:
Figure 8.8 Trigger Overlap - Readout
Frame Period ≥ Exposure Time + Readout Time
Frame Period ≤ Exposure Time + Readout Time
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VA GigE series
RA14-131-003