Abstract: Data collector has been widely used in the research and production field. According to the defects of automatic calibration for data collector, this paper design a new calibration system based on programmable multiswitch, and introduces the design of hardware and principle of test, and test system software. This system is reasonable and reliable．It can be extended easily and of great generalize value.

Key words: Data collector, Automatic calibration, Switch, LabVIEW