GigE VA Series User Manual page 38

Guidelines for Overlapped Exposure
If you will be operating the camera with overlapped exposure, there are two important guidelines to keep in mind:

You must not begin the exposure time for a new image acquisition while the exposure time of the previous
acquisition is in progress.

You must not end the exposure time of the current image acquisition until readout of the previously acquired
image is complete.
When you are operating a camera with overlapped exposure and using an external trigger signal to trigger
image acquisition, you could use the camera's Exposure time parameter settings and timing formulas to
calculate when it is safe to begin each new acquisition.
The exposure must always begin on an interline boundary of the CCD sensor. For this
reason, if a trigger signal is applied during the readout process, there might be an Exposure
Start Delay up to 1 horizontal line time.
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VA GigE series
RA14-131-003