The Camera Settings Command allows to specify general camera options, namely binning, skipping and chip window size. Due to the fact that imaging is a very memory-consuming business you are enabled to reduce the image resolution to fit your needs. Furthermore you may (and should) reduce the camera readout size if you are only interested in a part of the whole image.
Binning is a synonym of on-chip integration. With a binning factor of two the camera accumulates four adjacent pixels to improve both sensitivity and speed, at the expense of resolution.
Skipping: Due to the properties of a CCD-Chip the complete charges of the CCD-Chip have to be removed from the chip before acquiring a new image. That means even if you acquire only an AOI, i.e. a smaller portion of the whole chip, the charges of the whole chip have to be removed. Since you are not interested in some regions of the chip it is not necessary to convert the charges to digital values (this means skipping the data). Therefore it is possible to skip them with a higher binning factor. Thus, you can gain acquisition speed by using fewer rows.