The 2280 Series Data Logging System consists of a hardware configuration controlled by a menu-driven programming and operating scheme. The hardware configuration includes a 2280 mainframe, and may, depending on the applications being supported, include any assortment of option assemblies. In addition, one or more 2281A Extender Chassis may be used for more remote connections to the data logging environment. The programming and operating scheme involves substantial pre-programmed capabilities, all accessed directly from either a front panel keyboard or a remote controller. Distributed System Design The 2280 Series Data Logger makes use of a distributed system design that allows great flexibility in hardware placement. Any of the serial link option assemblies (and respective connector assemblies) can be installed in a remote 2281A Extender Chassis. The 2281A can be installed up to 1 kilometer from the 2280. All measurements and conversions can be completed at the remote location, with serial data consnunications occurring over a single cable. This system is quite efficient: external measurement wiring is minimized and accurate communication in electrically noisy environments is assured.