38 • Operational Reference Genie Monochrome Series-GigE Vision CameraPartial Scan—Window ROIPartial Scan (vertical cropping)The Partial Scan mode, also know as vertical cropping, reduces the number of video lines grabbed for a frame. Bynot scanning the full vertical area of the sensor, the maximum possible acquisition frame rate is proportionatelyincreased (as an extreme example, the M640 scanning a one line frame, exposed around 589fps).Scan Start OffsetScan Line CountPartial Image ScanPartial Scan IllustrationMaximum Frame Rate ExamplesVertical LinesAcquiredM640MaximumFrame RateM1024MaximumFrame RateM1400MaximumFrame RateM1410MaximumFrame Rate1024 -- -- 15 fps 21.8768 -- 20 fps 20 fps 28.1512 -- 28 fps 27 fps 39.8480 64 fps 30 fps 28 fps 42.0240 115 fps 50 fps 42 fps 71.3120 194 fps 74 fps 55 fps 109.460 293 fps 99 fps 66 fps 149.330 394 fps 118 fps 73 fps 182.61 589 fps 146 fps 81 fps 232.7