Axon GenePix 4200A Microarray Scanner

The 4200A array scanner is a laser-based data acquisition system. During the scanning process, a single laser beam excites a micron-sized spot on the sample microarray/microscope slide. Emitted light from the sample is returned through the excitation lens to be collected with the photomultiplier tube (PMT). The light signal is amplified by the PMT and converted into a digital value that is used to create the corresponding image.