Using industry-standard controller-area network (CAN) communication and cabling, the hand-held control module self-configures all modules for total system control. All instrument control parameters including column id can be stored on credit-card sized PCMCIA (PC) cards for error-free transfer between instruments. Based on Hewlett-Packard palmtop computer technology, a liquid-crystal display allows online monitoring of the signal during the run. The graphical user interface features context-sensitive help for new or occasional users.