Plexon Legacy Systems These systems are still supported but no longer sold by Plexon. CineLyzer® with Single Wavelength Multi-Fiber Photometry System Although new single wavelength photometry systems are no longer sold, support continues. Multichannel Acquisition Processor (MAP) Data Acquisition System Plexon’s pioneering neural data acquisition system. Although new MAP systems are no longer sold, upgrades are still possible and support continues.