1. A tester state browser for interfacing with test equipment, comprising: a set of plugins associated with one or more subsystems of the test equipment; a descriptor file describing an architecture of the test equipment and designating one or more of the set of plugins to corresponding one or more of the subsystems of the test equipment; a navigation module that reads the descriptor file, displays a map of the architecture of the test equipment based on the architecture described in the descriptor file, displays in the map a set of drill-down mechanisms each associated with different ones of the subsystems of the test equipment wherein each drill-down mechanism invokes the plugin associated with its corresponding respective subsystem.