C11440-42U30/C11440-42U31 Instruction manual_Ver.1.2
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(5) Frame rate
The CMOS image sensor realizes both low noise (0.9 electrons (median) 1.5 electrons
(r.m.s)) and high speed readout (30 fps with 2048 pixels x 2048 pixels) simultaneously,
by a split readout scheme in which the top and the bottom halves of the sensor are
readout independently, and the data of each horizontal line is read by 2 lines of column
amplifier and A/D in the top and the bottom in parallel and simultaneously.
(6) Real-time correction functions
When using the camera, there is a case that shading caused by uneven illumination or
optics is not negligible in the image. Also, there are a few pixels in the CMOS image
sensor that have slightly higher readout noise performance compared to surrounding
pixels. For those cases, the camera has real-time offset level, shading and defective
pixel correction features to further improve image quality. The correction is performed
in real-time without sacrificing the readout speed at all.
(7) Interface
This camera has USB 3.0 interface.
USB 3.0 interface is able to transfer 4 megapixels image with 30 fps.
It is versatile interface. It transfers image with moderate transfer speed.
(8) Camera operation modes
The camera has three operation modes: 1) the free running mode, in which the
exposure and readout timing are controlled by the internal microprocessor, and 2) the
external trigger mode, in which the exposure and readout timing are decided by an
external trigger. 3) the start trigger mode is used to start operating the camera by a
trigger input for a continuous imaging.
