8-slot Mainframe with optional integrated 6 ¨ö digit DMM 19 plug-in modules to choose from - DC to 20 GHz switching, Digital I/O, D/A Converter, Counter/Totalizer Up to 560 2-wire Multiplexer channels or 1024 2-wire Matrix cross points in a single Mainframe Standard USB, Ethernet, and GPIB connectivity to the PC Graphical Web interface Standard cables, detachable terminal blocks, or mass interconnect solutions Standard drivers for most common programming environments