The SM2040 provides a combination of resolution, accuracy and speed that surpasses rivals. A 6-1/2 digit display, 0.0045% basic DCV accuracy and 1,000 rps assure you of measurements that are accurate, fast and repeatable. The SM2042 adds a comprehensive repertoire of measurements, and the SM2044 adds more measurements and source functions, packed into a half-size PCI plug- in module. Both measurements and sourcing functions are isolated from the PC and are therefore truly differential. An on board controller responds to high level commands from the PC, minimizing overhead.