AW00123409000 Image Acquisition ControlBasler ace USB 3.0 1556.7 Overlapping Image Acquisitions6.7.1 Overlapping Image Acquisitions for All ModelsExcept acA1920-25, acA2500-14, acA3800-14,acA4600-10The frame acquisition process on the camera includes two distinct parts. The first part is theexposure of the pixels in the imaging sensor. Once exposure is complete, the second part of theprocess – readout of the pixel values from the sensor – takes place. In regard to this frameacquisition 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 theentire exposure/sensor readout process before acquisition of the next frame is started. Theexposure for a new frame does not overlap the sensor readout for the previous frame. This situationis illustrated in Figure 66 with the camera set for the trigger width exposure mode.In the overlapped mode of operation, the exposure of a new frame begins while the camera is stillreading out the sensor data for the previously acquired frame. This situation is illustrated inFigure 67 with the camera set for the trigger width exposure mode.Frame Acquisition NExposure Sensor ReadoutFrame Acquisition N+1Exposure Sensor ReadoutFrame Acquisition N+2Exposure Sensor ReadoutTimeExFSTrigSignalFig. 66: Non-overlapped Exposure and Sensor Readout
